1 dnl Process this file with autoconf to produce a configure script.
3 dnl There are two types of comments in this file.
4 dnl Comments that refer to Autoconf macros begin with "dnl", and m4
5 dnl discards them. Other comments begin with "#", and they get copied
6 dnl to the configure script, hopefully making it easier to read.
8 dnl Autoconf 2.13 generates an incomplete config.h.in; see ELinks bug 936.
9 dnl Autoconf 2.61 is installed in the computer that generates our nightly
10 dnl snapshots, so we need to be compatible with that. (Also, some files
11 dnl in Autoconf 2.62 and 2.63 sources are not GPLv2 compatible.)
14 AC_CONFIG_SRCDIR([src/main/main.c])
15 AC_CONFIG_AUX_DIR(config)
21 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Package version])
22 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Package version])
23 AC_CONFIG_HEADERS(config.h)
25 AC_CHECK_PROG(ACLOCAL,[aclocal],[aclocal],[config/missing aclocal])
26 AC_CHECK_PROG(AUTOCONF,[autoconf],[autoconf],[config/missing autoconf])
27 AC_CHECK_PROG(AUTOHEADER,[autoheader],[autoheader],[config/missing autoheader])
31 for make in gnumake gmake make false; do
32 if test "x$MAKE" = x; then
33 AC_PATH_PROGS(MAKE, "$make")
39 # Cleanup if we are configuring with a previous build in the tree
40 if test -e Makefile.config; then
41 AC_MSG_CHECKING([for previous build to clean])
42 "$MAKE" -C "$builddir/src" cleanall >/dev/null 2>/dev/null
46 # ===================================================================
47 # Load feature configuration file and start logging features.
48 # ===================================================================
50 features="features.conf"
51 test -f "$srcdir/$features" && . "$srcdir/$features"
52 test -f "$builddir/$features" && . "$builddir/$features"
53 echo "Feature summary:" > features.log
55 # ===================================================================
56 # Checks for programs.
57 # ===================================================================
60 AC_CHECK_TOOL([LD], [ld])
62 AC_PATH_PROGS(AWK, "$AWK")
66 AC_PATH_PROGS(GIT, "git")
67 AC_PATH_PROGS(SPARSE, "sparse")
74 if test "x$CONFIG_DOC" != xno; then
75 AC_PATH_PROGS(PYTHON, "python")
76 if test "x$PYTHON" != "x"; then
77 EL_CONFIG(CONFIG_ASCIIDOC, [AsciiDoc])
78 EL_CONFIG(MANUAL_ASCIIDOC, [HTML (one file)])
79 EL_CONFIG(MAN_ASCIIDOC, [HTML])
82 AC_PATH_PROGS(XMLTO, "xmlto")
83 if test "x$XMLTO" != "x"; then
84 EL_CONFIG(CONFIG_XMLTO, [XmlTo])
85 EL_CONFIG(MANUAL_XMLTO, [HTML (multiple files)])
86 EL_CONFIG(MAN_XMLTO, [man (groff)])
89 AC_PATH_PROGS(JW, "jw")
90 if test "x$JW" != "x"; then
91 EL_CONFIG(CONFIG_JW, [JadeWrapper])
92 EL_CONFIG(MANUAL_JW, [PDF])
95 AC_PATH_PROGS(POD2HTML, "pod2html")
96 if test "x$POD2HTML" != "x"; then
97 EL_CONFIG(CONFIG_POD2HTML, [Pod2HTML])
100 AC_PATH_PROGS(DOXYGEN, "doxygen")
101 if test "x$DOXYGEN" != "x"; then
102 EL_CONFIG(CONFIG_DOXYGEN, [Doxygen])
103 api_srcdir="$(cd "$srcdir" && pwd)/src"
108 AC_SUBST(CONFIG_ASCIIDOC)
109 AC_SUBST(CONFIG_DOXYGEN)
110 AC_SUBST(CONFIG_POD2HTML)
111 AC_SUBST(CONFIG_XMLTO)
114 EL_CONFIG_DEPENDS(CONFIG_DOC, [CONFIG_ASCIIDOC CONFIG_XMLTO CONFIG_JW CONFIG_POD2HTML], [Documentation Tools])
115 EL_CONFIG_DEPENDS(CONFIG_MANUAL, [MANUAL_ASCIIDOC MANUAL_XMLTO MANUAL_JW], [Manual Formats])
116 EL_CONFIG_DEPENDS(CONFIG_MANPAGE, [MAN_ASCIIDOC MAN_XMLTO], [Man Page Formats])
117 EL_CONFIG_DEPENDS(CONFIG_APIDOCS, [CONFIG_DOXYGEN], [API Documentation])
119 # gcc specific options (to be continued at the bottom of configure)
120 if test "x$ac_cv_c_compiler_gnu" = "xyes"; then
121 # We want to see all warnings and live with none.
122 # We can't set up -Werror here as there may be some warnings in test
123 # suite of configure, and we don't want to fail them.
124 CFLAGS="$CFLAGS -Wall"
127 # ===================================================================
128 # Checks for special OSes.
129 # ===================================================================
131 dnl EL_CHECK_COMPILER_MACRO(define, name, flagname)
132 AC_DEFUN([EL_CHECK_COMPILER_MACROS],
134 AC_MSG_CHECKING([for $2])
137 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[#ifndef $flag
139 #endif ]])],[$1=yes],[$1=no])
140 if test "[$]$1" = yes; then
141 EL_CONFIG([$1], [$2])
149 EL_CHECK_COMPILER_MACROS(CONFIG_OS_BEOS, [BEOS], [__BEOS__])
150 AC_SUBST(CONFIG_OS_BEOS)
152 EL_CHECK_COMPILER_MACROS(CONFIG_OS_RISCOS, [RISCOS], [__riscos__])
153 AC_SUBST(CONFIG_OS_RISCOS)
155 EL_CHECK_COMPILER_MACROS(CONFIG_OS_WIN32, [WIN32], [_WIN32 __WIN32__])
156 AC_SUBST(CONFIG_OS_WIN32)
158 EL_CHECK_COMPILER_MACROS(CONFIG_OS_OS2, [EMX], [__EMX__])
159 AC_SUBST(CONFIG_OS_OS2)
160 test "$CONFIG_OS_OS2" = yes && LDFLAGS=`echo "$LDFLAGS" | sed "s/-Zexe//g"`
162 AC_MSG_CHECKING([for UNIX])
163 dnl FIXME: some depend kind of mechanism
164 if test "$CONFIG_OS_BEOS" = no && \
165 test "$CONFIG_OS_RISCOS" = no && \
166 test "$CONFIG_OS_WIN32" = no && \
167 test "$CONFIG_OS_OS2" = no; then
168 EL_CONFIG(CONFIG_OS_UNIX, [UNIX])
172 AC_MSG_RESULT($CONFIG_OS_UNIX)
173 AC_SUBST(CONFIG_OS_UNIX)
175 # ===================================================================
176 # Checks for header files.
177 # ===================================================================
184 AC_CHECK_HEADERS(wchar.h wctype.h)
185 AC_CHECK_HEADERS(fcntl.h limits.h time.h unistd.h)
186 AC_CHECK_HEADERS(sigaction.h)
187 AC_CHECK_HEADERS(arpa/inet.h)
188 AC_CHECK_HEADERS(netinet/in_systm.h netinet/in_system.h netinet/ip.h)
189 AC_CHECK_HEADERS(netdb.h netinet/in.h netinet/in6_var.h)
190 AC_CHECK_HEADERS(ifaddrs.h)
191 AC_CHECK_HEADERS(sys/cygwin.h io.h)
192 AC_CHECK_HEADERS(sys/fmutex.h)
193 AC_CHECK_HEADERS(sys/ioctl.h sys/sockio.h)
194 AC_CHECK_HEADERS(sys/resource.h)
195 AC_CHECK_HEADERS(sys/select.h)
196 AC_CHECK_HEADERS(sys/signal.h)
197 AC_CHECK_HEADERS(sys/socket.h)
198 AC_CHECK_HEADERS(sys/time.h)
199 AC_CHECK_HEADERS(sys/utsname.h)
200 AC_CHECK_HEADERS([net/if.h], [], [],
201 [[#ifdef HAVE_SYS_SOCKET_H
202 # include <sys/socket.h> /* <net/if.h> on Mac OS X 10.5.4 needs this */
205 AC_CHECK_HEADERS(stdint.h inttypes.h)
206 AC_CHECK_HEADERS(locale.h pwd.h)
207 AC_CHECK_HEADERS(termios.h)
210 AC_CHECK_HEADERS(sys/un.h,
211 [CONFIG_INTERLINK=yes
212 EL_CONFIG([CONFIG_INTERLINK], [interlinking])],
213 [CONFIG_INTERLINK=no])
214 AC_SUBST(CONFIG_INTERLINK)
216 # ===================================================================
217 # Checks for typedefs, structures, and compiler characteristics.
218 # ===================================================================
223 AC_MSG_CHECKING([[for C99-conforming inline]])
241 [AC_MSG_RESULT([[yes]])
242 AC_DEFINE([NONSTATIC_INLINE], [inline],
243 [Define as inline if the compiler lets you declare a function without inline, then define it with inline, and have that definition refer to identifiers with internal linkage. This is allowed by C99 6.7.4p6 and 6.7.4p3 together. Otherwise define as nothing.])],
244 [AC_MSG_RESULT([[no]])
245 AC_DEFINE([NONSTATIC_INLINE], [])])
246 EL_CHECK_CODE(typeof, HAVE_TYPEOF, [], [int a; typeof(a) b;])
251 EL_CHECK_TYPE(ssize_t, int)
252 EL_CHECK_SYS_TYPE(long long, HAVE_LONG_LONG, [])
253 EL_CHECK_SYS_TYPE(off_t, HAVE_OFF_T, [])
254 EL_CHECK_INT_TYPE(int32_t, HAVE_INT32_T)
255 EL_CHECK_INT_TYPE(uint32_t, HAVE_UINT32_T)
256 EL_CHECK_INT_TYPE(uint16_t, HAVE_UINT16_T)
258 AC_CHECK_SIZEOF(char, 1)
259 AC_CHECK_SIZEOF(short, 2)
260 AC_CHECK_SIZEOF(int, 4)
261 AC_CHECK_SIZEOF(long, 4)
262 test "x$HAVE_LONG_LONG" = xyes && AC_CHECK_SIZEOF(long long, 8)
263 test "x$HAVE_OFF_T" = xyes && AC_CHECK_SIZEOF(off_t, 4)
265 # Check for variadic macros
266 EL_CHECK_CODE([variadic macros], HAVE_VARIADIC_MACROS,
268 #define a(b,c...) printf(b,##c)],
269 [a("foo");a("%s","bar");a("%s%s","baz","quux");])
271 # ===================================================================
272 # Checks for library functions.
273 # ===================================================================
275 AC_PROG_GCC_TRADITIONAL
279 AC_CHECK_FUNCS(atoll gethostbyaddr herror strerror)
280 AC_CHECK_FUNCS(popen uname access chmod alarm timegm mremap)
281 AC_CHECK_FUNCS(strcasecmp strncasecmp strcasestr strstr strchr strrchr)
282 AC_CHECK_FUNCS(memmove bcopy stpcpy strdup index isdigit mempcpy memrchr)
283 AC_CHECK_FUNCS(snprintf vsnprintf asprintf vasprintf)
284 AC_CHECK_FUNCS(getifaddrs getpwnam inet_pton inet_ntop)
285 AC_CHECK_FUNCS(fflush fsync fseeko ftello sigaction)
286 AC_CHECK_FUNCS(gettimeofday clock_gettime)
287 AC_CHECK_FUNCS(setitimer, HAVE_SETITIMER=yes)
289 AC_CHECK_FUNCS([cygwin_conv_to_full_win32_path])
291 AC_CHECK_FUNCS(setenv putenv, HAVE_SETENV_OR_PUTENV=yes)
292 AC_CHECK_FUNCS(unsetenv)
293 AC_CHECK_FUNCS(getuid, HAVE_GETUID=yes)
294 AC_CHECK_FUNCS(geteuid, HAVE_GETEUID=yes)
296 AC_CHECK_FUNCS(wcwidth, HAVE_WCWIDTH=yes)
298 # These aren't probably needed now, as they are commented in links.h.
299 # I've no idea about their historical background, but I keep them here
300 # just in the case they will help later. --pasky
301 AC_CHECK_FUNCS(getpid, HAVE_GETPID=yes)
302 AC_CHECK_FUNCS(setpgid getpgid setpgrp getpgrp)
303 AC_CHECK_FUNCS(raise, HAVE_RAISE=yes)
304 AC_CHECK_FUNCS(kill, HAVE_KILL=yes)
306 AC_CHECK_FUNCS(fpathconf, HAVE_FPATHCONF=yes)
308 if test x"$HAVE_RAISE" = x; then
309 if test x"$HAVE_KILL" = x || test x"$HAVE_GETPID" = x; then
310 AC_MSG_ERROR([Unable to emulate raise()])
314 AC_CACHE_CHECK([for __va_copy],el_cv_HAVE_VA_COPY,[
315 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>
316 va_list ap1,ap2;]], [[__va_copy(ap1,ap2);]])],[el_cv_HAVE_VA_COPY=yes],[el_cv_HAVE_VA_COPY=no])])
317 if test x"$el_cv_HAVE_VA_COPY" = x"yes"; then
318 EL_DEFINE(HAVE_VA_COPY, __va_copy)
321 AC_CACHE_CHECK([for sysconf(_SC_PAGE_SIZE)],el_cv_HAVE_SC_PAGE_SIZE,[
322 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
323 ]], [[int page_size = sysconf(_SC_PAGE_SIZE);]])],[el_cv_HAVE_SC_PAGE_SIZE=yes],[el_cv_HAVE_SC_PAGE_SIZE=no])])
324 if test x"$el_cv_HAVE_SC_PAGE_SIZE" = x"yes"; then
325 EL_DEFINE(HAVE_SC_PAGE_SIZE, _SC_PAGE_SIZE)
328 AC_CACHE_CHECK([for C99 vsnprintf],el_cv_HAVE_C99_VSNPRINTF,[
329 AC_RUN_IFELSE([AC_LANG_SOURCE([[
337 int bar(char *buf, const char *format, va_list ap)
339 return vsnprintf(buf, 0, format, ap);
342 void foo(const char *format, ...) {
346 va_start(ap, format);
347 len = bar(buf, format, ap);
349 if ((len != 6) && (len != 7)) exit(1); /* \n -> \r\n */
351 va_start(ap, format);
352 len = bar(buf, format, ap);
354 if ((len != 6) && (len != 7)) exit(1);
356 if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(1);
360 main() { foo("hello\n"); }
361 ]])],[el_cv_HAVE_C99_VSNPRINTF=yes],[el_cv_HAVE_C99_VSNPRINTF=no],[el_cv_HAVE_C99_VSNPRINTF=cross])])
362 if test x"$el_cv_HAVE_C99_VSNPRINTF" = x"yes"; then
363 EL_DEFINE(HAVE_C99_VSNPRINTF, [C99 compliant vsnprintf()])
366 # OpenSSL and Lua frequently need dlopen
367 AC_CHECK_LIB(dl, dlopen)
369 # ===================================================================
370 # Checks for libraries.
371 # ===================================================================
373 AC_CHECK_FUNC(socket, cf_result=yes, cf_result=no)
374 if test "$cf_result" = no; then
375 AC_CHECK_LIB(socket, socket)
378 AC_CHECK_FUNC(setsockopt, cf_result=yes, cf_result=no)
379 if test "$cf_result" = no; then
380 AC_CHECK_LIB(socket, setsockopt)
383 AC_CHECK_FUNC(gethostbyname, cf_result=yes, cf_result=no)
384 if test "$cf_result" = no; then
385 AC_CHECK_LIB(socket, gethostbyname, cf_result=yes, cf_result=no)
386 if test "$cf_result" = no; then
387 AC_CHECK_LIB(nsl, gethostbyname)
389 test -z "`echo $LIBS | grep -- -lsocket`" && LIBS="$LIBS -lsocket"
393 # ===================================================================
394 # Checks for packaging specific options.
395 # ===================================================================
397 AC_ARG_WITH(xterm, [ --with-xterm how to invoke the X terminal emulator],
398 [ if test "$withval" != no && test "$withval" != yes; then
399 AC_DEFINE_UNQUOTED(XTERM, "$withval", [How to invoke XTerm])
402 # ===================================================================
403 # Checks for a libraries, optional even if installed.
404 # ===================================================================
406 dnl EL_CHECK_OPTIONAL_LIBRARY(define, name, header, lib, function)
407 AC_DEFUN([EL_CHECK_OPTIONAL_LIBRARY],
409 AC_MSG_CHECKING([for $2 support])
411 if test "[$]$1" != no; then
414 if test -n "$withval" && test -d "$withval"; then
415 # Be a little more careful when setting
416 # include and lib directories. This way
417 # $withval will work when includes are
418 # there but the library is in the common
419 # /usr/lib ... Does the right thing when
420 # looking for gc on Debian.
421 if test -d "$withval/include"; then
422 CFLAGS="$CFLAGS -I$withval/include"
423 CPPFLAGS="$CPPFLAGS -I$withval/include"
425 CFLAGS="$CFLAGS -I$withval"
426 CPPFLAGS="$CPPFLAGS -I$withval"
428 if test -d "$withval/lib"; then
429 LDFLAGS="$LDFLAGS -L$withval/lib"
433 AC_CHECK_HEADERS([$3], [$1=yes], [$1=no; break;])
434 if test "[$]$1" = yes; then
435 AC_CHECK_LIB([$4], [$5], [$1=yes], [$1=no])
438 if test "[$]$1" = yes; then
439 EL_CONFIG([$1], [$2])
442 if test -n "[$]WITHVAL_$1" &&
443 test "x[$]WITHVAL_$1" != xno; then
444 AC_MSG_ERROR([$2 not found])
449 AC_MSG_RESULT(disabled)
453 dnl EL_CONFIG_OPTIONAL_LIBRARY(define, name, header, lib, function, confhelp)
454 AC_DEFUN([EL_CONFIG_OPTIONAL_LIBRARY],
456 if test "x[$]$1" != xno; then $1=yes; fi
459 AC_ARG_WITH([$2], [$6], [WITHVAL_$1="[$]withval"])
460 if test "x[$]WITHVAL_$1" = xno; then $1=no; fi
461 if test "x[$]WITHVAL_$1" = xyes; then $1=yes; fi
463 EL_CHECK_OPTIONAL_LIBRARY([$1], [$2], [$3], [$4], [$5])
465 EL_LOG_CONFIG([$1], [$2], [])
468 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GPM, gpm, gpm.h, gpm, Gpm_Open,
469 [ --without-gpm disable gpm (mouse) support])
471 # ELinks calls deflateInit2 with windowBits = MAX_WBITS | 32, to
472 # enable automatic decoding of both zlib and gzip headers. This
473 # feature was added in zlib 1.2.0.2; earlier versions return an error.
474 # The gzclearerr function was also added in zlib 1.2.0.2, so check for
475 # that, even though ELinks does not actually call gzclearerr.
476 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GZIP, zlib, zlib.h, z, gzclearerr,
477 [ --without-zlib disable zlib support])
479 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_BZIP2, bzlib, bzlib.h, bz2, BZ2_bzReadOpen,
480 [ --without-bzlib disable bzlib support])
482 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_IDN, idn, idna.h, idn, stringprep_check_version,
483 [ --without-idn disable international domain names support])
485 if test "x${with_gc}" != xno; then
486 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GC, gc, gc.h, gc, GC_init,
487 [ --with-gc enable Boehm's garbage collector])
490 # LZMA disabled by default, because of little usability and compilation problems
492 EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_LZMA, lzma, lzma.h, lzma, lzma_code,
493 [ --with-lzma enable lzma encoding support])
495 # ===================================================================
496 # Check for GSSAPI, optional even if installed.
497 # ===================================================================
501 AC_ARG_WITH(gssapi, [ --with-gssapi enable GSSAPI support],
502 [ if test "x$withval" != xno; then enable_gssapi=yes; fi ])
504 AC_MSG_CHECKING([for GSSAPI])
506 if test "$enable_gssapi" = "yes"; then
508 GSSAPI_CFLAGS=`krb5-config --cflags gssapi`
509 GSSAPI_LIBS=`krb5-config --libs gssapi`
510 CFLAGS="$GSSAPI_CFLAGS $CFLAGS"
511 LIBS="$GSSAPI_LIBS $LIBS"
512 EL_CONFIG(CONFIG_GSSAPI, [GssApi])
517 AC_SUBST(CONFIG_GSSAPI)
519 # ===================================================================
520 # Bookmark and XBEL support
521 # ===================================================================
525 EL_ARG_ENABLE(CONFIG_BOOKMARKS, bookmarks, [Bookmarks],
526 [ --disable-bookmarks disable bookmark support])
528 # Check whether --enable-xbel or --disable-xbel was given.
529 if test "x${enable_xbel}" != xno; then
530 AC_CHECK_HEADERS(expat.h, HAVE_LIBEXPAT=yes, HAVE_LIBEXPAT=no)
532 if test "$HAVE_LIBEXPAT" = yes; then
533 AC_CHECK_LIB(expat, XML_ParserCreate, HAVE_LIBEXPAT=yes, HAVE_LIBEXPAT=no)
534 if test "$HAVE_LIBEXPAT" = yes; then
541 EL_ARG_DEPEND(CONFIG_XBEL_BOOKMARKS, xbel, [CONFIG_BOOKMARKS:yes HAVE_LIBEXPAT:yes],
543 [ --disable-xbel disable XBEL bookmark support (requires expat)])
545 if test "$CONFIG_XBEL_BOOKMARKS" != yes; then
549 # ===================================================================
550 # Checks for BSD sysmouse
551 # ===================================================================
553 HAVE_SYSMOUSE_HEADER="no"
555 # Either of these header files provides the (same) sysmouse interface
556 AC_CHECK_HEADERS(sys/consio.h machine/console.h, [HAVE_SYSMOUSE_HEADER="yes"])
558 # ===================================================================
560 # ===================================================================
562 if test "$CONFIG_OS_OS2" = yes; then
566 # ===================================================================
568 # ===================================================================
570 if test "$CONFIG_OS_WIN32" = yes; then
574 # ===================================================================
575 # Check for SpiderMonkey, optional even if installed.
576 # ===================================================================
578 # This option sets the $with_spidermonkey variable.
579 AC_ARG_WITH([spidermonkey],
580 [AS_HELP_STRING([--without-spidermonkey],
581 [disable SpiderMonkey Mozilla JavaScript engine support])])
583 # CONFIG_SPIDERMONKEY is initially blank. We change it to "yes" or "no"
584 # when we know for sure whether we're going to use SpiderMonkey or not.
585 # (features.conf is not supposed to define it.)
589 case "$with_spidermonkey" in
591 # The user specified --without-spidermonkey.
592 # That overrides the other SpiderMonkey options.
593 AC_MSG_CHECKING([for SpiderMonkey])
594 AC_MSG_RESULT([disabled])
595 CONFIG_SPIDERMONKEY="no"
600 AC_MSG_WARN([This version of ELinks does not support --with-spidermonkey=DIRECTORY.])
604 # The SpiderMonkey 1.8.5 standalone sources install mozjs185.pc,
605 # but the Debian libmozjs-dev package installs mozilla-js.pc.
606 # Check mozjs185 first, because it has the version number in the name
607 # and therefore is less likely to be a newer incompatible version.
608 # (This configure script rejects older incompatible versions
609 # but can let newer ones through.)
610 for package in mozjs185 mozilla-js; do
611 if test -n "$CONFIG_SPIDERMONKEY"; then
614 AC_MSG_CHECKING([for SpiderMonkey (1.8.5 or later) in pkg-config $package])
615 # In pkg-config 0.25, pkg-config --exists mozjs185
616 # returns 0 (success) even if mozjs185 depends on
617 # nspr, which has not been installed. However,
618 # pkg-config --cflags mozjs185 returns 1 then.
619 if pkg-config --cflags --libs $package > /dev/null 2>&AS_MESSAGE_LOG_FD; then
620 SPIDERMONKEY_LIBS="$(pkg-config --libs $package)"
621 SPIDERMONKEY_CFLAGS="$(pkg-config --cflags $package)"
622 LIBS="$SPIDERMONKEY_LIBS $LIBS_X"
623 CFLAGS="$CFLAGS_X $SPIDERMONKEY_CFLAGS"
624 CPPFLAGS="$CPPFLAGS_X $SPIDERMONKEY_CFLAGS"
627 /* mozilla-js.pc may have -DXP_UNIX or similar in Cflags.
628 * Avoid warnings about conflicting definitions. */
629 #if !defined(XP_BEOS) && !defined(XP_OS2) && !defined(XP_UNIX) && !defined(XP_WIN)
634 # error <jsapi.h> did not define JS_VERSION
635 #elif JS_VERSION < 185
638 [CONFIG_SPIDERMONKEY=yes
639 AC_MSG_RESULT([yes])],
640 [# Leave CONFIG_SPIDERMONKEY blank, to continue the search.
641 AC_MSG_RESULT([found but unusable])])
648 if test -z "$CONFIG_SPIDERMONKEY"; then
649 # Didn't find SpiderMonkey anywhere.
650 CONFIG_SPIDERMONKEY=no
653 if test "$CONFIG_SPIDERMONKEY" = "yes"; then
654 # LIBS, CFLAGS, and CPPFLAGS still include the SpiderMonkey options.
655 AC_CHECK_FUNCS([JS_ReportAllocationOverflow])
656 AC_CHECK_FUNCS([JS_SetBranchCallback])
657 AC_CHECK_FUNCS([JS_TriggerOperationCallback], [HAVE_JS_TRIGGEROPERATIONCALLBACK=yes])
658 elif test -n "$with_spidermonkey" && test "x$with_spidermonkey" != "xno"; then
659 AC_MSG_WARN([SpiderMonkey was not found even though you specified --with-spidermonkey.])
663 if test "x$CONFIG_SPIDERMONKEY" = xyes; then
664 EL_CONFIG(CONFIG_ECMASCRIPT_SMJS, [SpiderMonkey document scripting])
666 CONFIG_ECMASCRIPT_SMJS=no
669 EL_CONFIG_DEPENDS(CONFIG_ECMASCRIPT, [CONFIG_ECMASCRIPT_SMJS], [ECMAScript (JavaScript)])
670 AC_SUBST(CONFIG_ECMASCRIPT_SMJS)
672 if test "x$CONFIG_ECMASCRIPT_SMJS" = xyes &&
673 test "x$HAVE_JS_TRIGGEROPERATIONCALLBACK" = xyes &&
674 test "x$HAVE_SETITIMER" = xyes; then
675 EL_CONFIG(CONFIG_ECMASCRIPT_SMJS_HEARTBEAT, [ECMAScript heartbeat support])
677 CONFIG_ECMASCRIPT_SMJS_HEARTBEAT=no
679 AC_SUBST(CONFIG_ECMASCRIPT_SMJS_HEARTBEAT)
682 # ===================================================================
683 # Optional Spidermonkey-based ECMAScript browser scripting
684 # ===================================================================
686 AC_ARG_ENABLE(sm-scripting,
687 [ --disable-sm-scripting ECMAScript browser scripting (requires Spidermonkey)],
688 [if test "$enableval" != no; then enableval="yes"; fi
689 CONFIG_SCRIPTING_SPIDERMONKEY="$enableval";])
691 if test "x$CONFIG_SPIDERMONKEY" = xyes &&
692 test "x$CONFIG_SCRIPTING_SPIDERMONKEY" = xyes; then
693 EL_CONFIG(CONFIG_SCRIPTING_SPIDERMONKEY, [SpiderMonkey])
695 CONFIG_SCRIPTING_SPIDERMONKEY=no
698 if test "x$CONFIG_ECMASCRIPT_SMJS" = xyes ||
699 test "x$CONFIG_SCRIPTING_SPIDERMONKEY" = xyes; then
700 LIBS="$LIBS $SPIDERMONKEY_LIBS"
701 AC_SUBST(SPIDERMONKEY_LIBS)
702 AC_SUBST(SPIDERMONKEY_CFLAGS)
703 AC_SUBST(CONFIG_SPIDERMONKEY)
706 # ===================================================================
707 # Check for Guile, optional even if installed.
708 # ===================================================================
712 AC_ARG_WITH(guile, [ --with-guile enable Guile support],
713 [ if test "x$withval" != xno; then enable_guile=yes; fi ])
715 # The following is probably bad, ugly and so on. Stolen from Guile's (1.4)
716 # GUILE_FLAGS but I really don't want to require people to have Guile in order
717 # to compile CVS. Also, the macro seems to be really stupid regarding searching
718 # for Guile in $PATH etc. --pasky
720 AC_MSG_CHECKING([for Guile])
722 if test "$enable_guile" = "yes"; then
724 ## Based on the GUILE_FLAGS macro.
726 if test -d "$withval"; then
727 GUILE_PATH="$withval:$PATH"
732 AC_PATH_PROG(GUILE_CONFIG, guile-config, no, $GUILE_PATH)
734 ## First, let's just see if we can find Guile at all.
735 if test "$GUILE_CONFIG" != no; then
738 GUILE_LIBS="`guile-config link`"
739 GUILE_CFLAGS="`guile-config compile`"
740 LIBS="$GUILE_LIBS $LIBS"
741 EL_CONFIG(CONFIG_SCRIPTING_GUILE, [Guile])
742 AC_SUBST(GUILE_CFLAGS)
744 ***********************************************************************
745 The Guile support is incomplete and not so well integrated to ELinks
746 yet. That means, e.g., that you have no Guile console and there might
747 not be all the necessary hooks. Also, the Guile interface is not too
748 well tested (success stories heartily welcomed!). See
749 src/scripting/guile/README for further details and hints.
750 ***********************************************************************
753 if test -n "$withval" && test "x$withval" != xno; then
754 AC_MSG_ERROR([Guile not found])
756 AC_MSG_WARN([Guile support disabled])
763 # ===================================================================
765 # ===================================================================
768 AC_ARG_WITH(perl, [ --with-perl enable Perl support],
770 if test "$withval" = yes; then
771 # FIXME: If withval is a valid directory append it to PATH
772 # so that you can specify one of several perl installations.
778 AC_MSG_CHECKING([for Perl])
784 if test "$enable_perl" = "yes"; then
785 PERL_LIBS="`perl -MExtUtils::Embed -e ldopts`"
786 PERL_CFLAGS="`perl -MExtUtils::Embed -e ccopts`"
787 LIBS="$PERL_LIBS $LIBS"
788 CFLAGS="$PERL_CFLAGS $CFLAGS"
789 CPPFLAGS="$CPPFLAGS $PERL_CFLAGS"
790 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
794 ]], [[PerlInterpreter *my_perl = perl_alloc();]])],[cf_result=yes],[cf_result=no])
797 if test "$cf_result"; then AC_MSG_RESULT($cf_result); fi
799 AC_MSG_CHECKING([whether POPpx works without an n_a variable])
800 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
803 extern PerlInterpreter *my_perl;
804 ]], [[dSP; (void) POPpx;]])],[AC_MSG_RESULT([yes])
805 AC_DEFINE([CONFIG_PERL_POPPX_WITHOUT_N_A], [1],
806 [Define if using Perl 5.8.8 or later, where the "POPpx" macro
807 no longer needs an "n_a" variable like it did in 5.8.7])],[AC_MSG_RESULT([no])])
809 if test "$cf_result" != "yes"; then
812 EL_CONFIG(CONFIG_SCRIPTING_PERL, [Perl])
815 CPPFLAGS="$CPPFLAGS_X"
817 AC_SUBST(PERL_CFLAGS)
820 # ===================================================================
822 # ===================================================================
825 AC_ARG_WITH(python, [[ --with-python[=DIR] enable Python support]],
826 [ if test "x$withval" != xno; then enable_python=yes; fi ])
831 AC_MSG_CHECKING([for Python])
833 if test "$enable_python" = "yes"; then
836 if test -d "$withval"; then
837 PYTHON_PATH="$withval:$PATH"
842 AC_PATH_PROG(PYTHON, python, no, $PYTHON_PATH)
844 if test "$PYTHON" != no; then
847 PYTHON_CFLAGS="`$PYTHON -c 'from distutils import sysconfig; print "-I%s -I%s" % (sysconfig.get_python_inc(), sysconfig.get_python_inc(plat_specific=True))'`"
848 PYTHON_LIBS="`$PYTHON -c 'from distutils import sysconfig; var = sysconfig.get_config_var; print "%s %s %s -L%s -lpython%s" % (var("LINKFORSHARED"), var("LIBS"), var("SYSLIBS"), var("LIBPL"), var("VERSION"))'`"
849 LIBS="$PYTHON_LIBS $LIBS"
850 CPPFLAGS="$CPPFLAGS $PYTHON_CFLAGS"
851 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <Python.h>]], [[Py_Initialize();]])],[cf_result=yes],[cf_result=no])
853 if test "$cf_result" != "yes"; then
856 EL_CONFIG(CONFIG_SCRIPTING_PYTHON, [Python])
857 AC_SUBST(PYTHON_LIBS)
858 AC_SUBST(PYTHON_CFLAGS)
859 CPPFLAGS="$CPPFLAGS_X"
861 ***********************************************************************
862 The Python support is incomplete and not so well integrated to ELinks
863 yet. That means, e.g., that you have no Python console and there might
864 not be all the necessary hooks. Also, the Python interface is not too
865 well tested (success stories heartily welcomed!).
866 ***********************************************************************
870 if test -n "$withval" && test "x$withval" != xno; then
871 AC_MSG_ERROR([Python not found])
873 AC_MSG_WARN([Python support disabled])
881 # ===================================================================
882 # Check for Lua, optional even if installed.
883 # ===================================================================
885 # Do this the long way, as FreeBSD reportedly needs -L<dir> for
886 # anything other than /usr/lib, and Lua is very often in /usr/local/lib.
888 AC_ARG_WITH(lua, [ --without-lua disable Lua support],
889 [if test "$withval" = no; then disable_lua=yes; fi])
890 AC_MSG_CHECKING([for Lua])
895 if test -z "$disable_lua"; then
896 if test ! -d "$withval"; then
899 for luadir in "$withval" "" /usr /usr/local; do
900 for suffix in "" 5.1 51; do
901 if test "$cf_result" = no && ( test -f "$luadir/include/lua.h" || \
902 test -f "$luadir/include/lua$suffix/lua.h" ) ; then
903 LUA_LIBS="-L$luadir/lib -llua$suffix -lm"
904 LUA_CFLAGS="-I$luadir/include -I$luadir/include/lua$suffix"
906 LIBS="$LUA_LIBS $LIBS_X"
907 CFLAGS="$CFLAGS_X $LUA_CFLAGS"
908 CPPFLAGS="$CPPFLAGS_X $LUA_CFLAGS"
910 # Check that it is a compatible Lua version
911 AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <lauxlib.h>]
914 ], [[ lua_State *L = luaL_newstate();
916 lua_pushboolean(L, 1);
917 lua_close(L);]])],[cf_result=yes],[cf_result=no])
923 AC_MSG_RESULT($cf_result)
925 if test "$cf_result" != yes; then
928 EL_CONFIG(CONFIG_SCRIPTING_LUA, [Lua])
929 AC_CHECK_HEADERS(lauxlib.h)
932 CPPFLAGS="$CPPFLAGS_X"
937 # ===================================================================
938 # Check for TRE library
939 # ===================================================================
941 # This section only checks that --without-tre is not given and the
942 # library seems to work, and sets TRE_CFLAGS, TRE_LIBS, and
943 # tre_log. It does not define CONFIG_TRE, and always resets
944 # LIBS and CFLAGS back to their original values.
946 # After any --enable-utf-8 and --disable-utf-8 options have been
947 # handled, a separate section decides whether to actually use TRE.
949 # tre version 0.8.0 or higher is required which have the "tre_" prefix
952 AC_ARG_WITH([[tre]], [[ --without-tre disable TRE regex search support]])
953 if test "$with_tre" = no; then
954 AC_MSG_CHECKING([[for TRE]])
955 AC_MSG_RESULT([[disabled]])
956 tre_log="no (explicitly disabled)"
958 AC_MSG_CHECKING([[for TRE in pkg-config]])
959 if pkg-config tre; then
960 TRE_CFLAGS=`pkg-config --cflags tre`
961 TRE_LIBS=`pkg-config --libs tre`
962 AC_MSG_RESULT([[yes]])
964 # <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513055>
965 # "libtre-dev: /usr/lib/pkgconfig/tre.pc missing"
966 # so we look for the library even if pkg-config doesn't know about it.
969 AC_MSG_RESULT([[no, but let's try defaults]])
972 AC_MSG_CHECKING([[for TRE header and library]])
974 CFLAGS="$TRE_CFLAGS $CFLAGS"
975 LIBS="$TRE_LIBS $LIBS" # must be first, because of regfree conflict
976 AC_TRY_LINK([#include <tre/tre.h>],
979 tre_regwcomp(&re, L"zap", REG_ICASE);
980 tre_regwexec(&re, L"ELIZAPROGRAM", 1, match, 0);],
981 [AC_MSG_RESULT([[yes]])
982 tre_log="available"],
983 [AC_MSG_RESULT([[no]])
984 tre_log="no (TRE not found)"])
988 # ===================================================================
989 # Check for Ruby, optional even if installed.
990 # ===================================================================
992 EL_CONFIG_SCRIPTING_RUBY
994 # ===================================================================
995 # Setup global scripting
996 # ===================================================================
998 EL_CONFIG_DEPENDS(CONFIG_SCRIPTING, [CONFIG_SCRIPTING_GUILE CONFIG_SCRIPTING_LUA CONFIG_SCRIPTING_PERL CONFIG_SCRIPTING_PYTHON CONFIG_SCRIPTING_RUBY CONFIG_SCRIPTING_SPIDERMONKEY], [Browser scripting])
999 AC_SUBST(CONFIG_SCRIPTING_GUILE)
1000 AC_SUBST(CONFIG_SCRIPTING_LUA)
1001 AC_SUBST(CONFIG_SCRIPTING_PERL)
1002 AC_SUBST(CONFIG_SCRIPTING_PYTHON)
1003 AC_SUBST(CONFIG_SCRIPTING_RUBY)
1004 AC_SUBST(CONFIG_SCRIPTING_SPIDERMONKEY)
1005 AC_SUBST(CONFIG_SCRIPTING)
1008 # ===================================================================
1009 # Check for SSL support.
1010 # ===================================================================
1012 # We by default use OpenSSL, and we always prefer it. However, when GNUTLS
1013 # is enabled, we won't try to use OpenSSL anymore.
1015 # For wiping SSL hooks..
1018 chosen_ssl_library=""
1020 AC_ARG_WITH(gnutls, [[ --without-gnutls disable GNUTLS SSL support]])
1021 AC_ARG_WITH(gnutls, [[ --with-gnutls enable GNUTLS SSL support]],
1022 [case "$with_gnutls" in
1024 "yes") chosen_ssl_library="GNUTLS" ;;
1025 *) chosen_ssl_library="GNUTLS"
1026 AC_MSG_WARN([[Support for --with-gnutls=DIR has been removed.
1027 You may have to set the PKG_CONFIG_PATH environment variable instead.]]) ;;
1030 AC_ARG_WITH(openssl, [[ --without-openssl disable OpenSSL support]])
1031 AC_ARG_WITH(openssl, [[ --with-openssl[=DIR] enable OpenSSL support (default)]],
1032 [case "$with_openssl" in
1034 *) chosen_ssl_library="OpenSSL" ;;
1037 AC_ARG_WITH(nss_compat_ossl, [[ --with-nss_compat_ossl[=DIR]
1038 NSS compatibility SSL libraries/include files]],
1039 [case "$with_nss_compat_ossl" in
1041 *) chosen_ssl_library="nss_compat_ossl" ;;
1044 # ---- nss_compat_ossl
1046 if test "$with_nss_compat_ossl" = no; then
1047 # explicitly disabled
1049 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "nss_compat_ossl"; then
1050 # not used, because $chosen_ssl_library was chosen
1052 elif test -z "${with_nss_compat_ossl+set}"; then
1053 # SSL_library_init() in nss_compat_ossl 0.9.2 calls exit(1)
1054 # with no error message if there is no certificate database.
1055 # https://bugzilla.redhat.com/show_bug.cgi?id=463437
1056 # So ELinks uses nss_compat_ossl only if explicitly requested.
1060 if test "$with_nss_compat_ossl" = yes; then
1061 if pkg-config nss; then
1062 CFLAGS="$CFLAGS_X `pkg-config --cflags nss`"
1063 LIBS="$LIBS_X `pkg-config --libs nss`"
1065 with_nss_compat_ossl=no
1068 # Without pkg-config, we'll kludge in some defaults
1069 CFLAGS="$CFLAGS_X -I$with_nss_compat_ossl/include -I/usr/include/nss3 -I/usr/include/nspr4"
1070 LIBS="$LIBS_X -L$with_nss_compat_ossl/lib -lssl3 -lsmime3 -lnss3 -lplds4 -lplc4 -lnspr4 -lpthread -ldl"
1072 AC_CHECK_HEADERS(nss_compat_ossl/nss_compat_ossl.h,, [with_nss_compat_ossl=no], [#define NSS_COMPAT_OSSL_H])
1073 AC_CHECK_LIB(nss_compat_ossl, X509_free,, [with_nss_compat_ossl=no])
1075 if test "$with_nss_compat_ossl" = "no"; then
1078 LIBS="$LIBS -lnss_compat_ossl"
1079 EL_CONFIG(CONFIG_NSS_COMPAT_OSSL, [nss_compat_ossl])
1080 chosen_ssl_library="nss_compat_ossl"
1086 AC_MSG_CHECKING([for OpenSSL])
1090 if test "$with_openssl" = no; then
1091 cf_result="explicitly disabled"
1093 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "OpenSSL"; then
1094 cf_result="not used, because $chosen_ssl_library was chosen"
1098 for ssldir in "$with_openssl" "" /usr /usr/local/openssl \
1099 /usr/lib/openssl /usr/local/ssl \
1100 /usr/local/www /usr/lib/ssl /usr/local \
1101 /usr/pkg /opt /opt/openssl; do
1102 if test "$cf_result" = no; then
1103 if test -d "$ssldir"; then
1104 OPENSSL_CFLAGS="-I$ssldir/include"
1105 LIBS="-L$ssldir/lib -lssl -lcrypto $LIBS_X"
1106 CFLAGS="$CFLAGS_X $OPENSSL_CFLAGS"
1107 CPPFLAGS="$CPPFLAGS_X $OPENSSL_CFLAGS"
1108 # # FIXME: This created serious portability problems. --pasky
1109 # if test "$CC" == "gcc"; then
1110 # # I'm not sure about compatibility here. --pasky
1111 # LIBS="$LIBS -R$ssldir/lib"
1114 LIBS="-lssl -lcrypto $LIBS_X"
1116 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <openssl/ssl.h>]], [[OpenSSL_add_all_algorithms()]])],[cf_result=yes],[cf_result=no])
1117 if test "$cf_result" != yes; then
1118 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <openssl/ssl.h>]], [[SSLeay_add_ssl_algorithms()]])],[cf_result=yes],[cf_result=no])
1123 if test "$cf_result" != yes; then
1124 if test "${with_openssl-no}" != "no"; then
1125 AC_MSG_ERROR([OpenSSL not found])
1129 EL_CONFIG(CONFIG_OPENSSL, [OpenSSL])
1130 chosen_ssl_library="OpenSSL"
1133 AC_SUBST(OPENSSL_CFLAGS)
1137 AC_MSG_RESULT($cf_result)
1141 # GnuTLS 2.2.0 changed libgnutls-openssl from GPLv2+
1142 # to GPLv3+. Don't link that with the GPLv2 ELinks.
1143 # ELinks will use its internal MD5 code instead.
1144 CONFIG_GNUTLS_OPENSSL_COMPAT=no
1146 if test "$with_gnutls" = no; then
1147 AC_MSG_CHECKING([[for GNUTLS]])
1148 AC_MSG_RESULT([[explicitly disabled]])
1150 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "GNUTLS"; then
1151 AC_MSG_CHECKING([[for GNUTLS]])
1152 AC_MSG_RESULT([[not used, because $chosen_ssl_library was chosen]])
1156 AC_MSG_CHECKING([[for GNUTLS (1.2 or later) in pkg-config]])
1157 if pkg-config --atleast-version=1.2 gnutls; then
1158 GNUTLS_CFLAGS=`pkg-config --cflags gnutls`
1159 GNUTLS_LIBS=`pkg-config --libs gnutls`
1160 AC_MSG_RESULT([[yes: $GNUTLS_CFLAGS $GNUTLS_LIBS]])
1163 LIBS="$GNUTLS_LIBS $LIBS"
1164 CFLAGS="$CFLAGS $GNUTLS_CFLAGS"
1165 CPPFLAGS="$CPPFLAGS $GNUTLS_CFLAGS"
1167 # Verify if it's really usable. gnutls_session was
1168 # renamed to gnutls_session_t before GNU TLS 1.2.0
1169 # (on 2004-06-13); ELinks now requires this.
1170 AC_MSG_CHECKING([[whether GNUTLS can be linked with]])
1171 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <gnutls/gnutls.h>]],
1172 [[gnutls_session_t dummy;
1173 gnutls_check_version(NULL)]])],
1176 AC_MSG_RESULT([[$cf_result]])
1178 if test "$cf_result" = yes; then
1179 # According to gnutls/NEWS, the function was originally
1180 # added as gnutls_set_default_priority2 in GNUTLS 2.1.4
1181 # (released 2007-10-27) and then renamed to
1182 # gnutls_priority_set_direct in GNUTLS 2.1.7 (released
1184 AC_CHECK_FUNCS([gnutls_priority_set_direct])
1189 AC_MSG_RESULT([[$cf_result]])
1192 if test "$cf_result" = yes; then
1193 EL_CONFIG(CONFIG_GNUTLS, [GNUTLS])
1194 chosen_ssl_library="GNUTLS"
1196 # gcry_create_nounce is part of libgcrypt
1197 LIBGCRYPT_CFLAGS=`libgcrypt-config --cflags`
1198 LIBGCRYPT_LIBS=`libgcrypt-config --libs`
1200 LIBS="$LIBGCRYPT_LIBS $GNUTLS_LIBS $LIBS"
1201 AC_SUBST(LIBGCRYPT_CFLAGS)
1202 AC_SUBST(GNUTLS_CFLAGS)
1204 elif test "${with_gnutls-no}" != "no"; then
1205 AC_MSG_ERROR([[GNUTLS (1.2 or later) not found. ELinks no longer supports GNUTLS 1.1.]])
1211 EL_CONFIG_DEPENDS(CONFIG_SSL, [CONFIG_OPENSSL CONFIG_GNUTLS CONFIG_NSS_COMPAT_OSSL], [SSL])
1212 AC_SUBST(CONFIG_GNUTLS_OPENSSL_COMPAT)
1213 AC_SUBST(CONFIG_OPENSSL)
1214 AC_SUBST(CONFIG_GNUTLS)
1215 AC_SUBST(CONFIG_NSS_COMPAT_OSSL)
1219 AC_MSG_CHECKING([whether to be or not to be])
1220 AC_MSG_RESULT([needs to be determined experimentally])
1222 # ===================================================================
1223 # Check for IPv6 support and related functions.
1224 # ===================================================================
1226 EL_CHECK_NET_TYPE(struct sockaddr_storage, HAVE_SA_STORAGE, [])
1227 EL_CHECK_NET_TYPE(struct sockaddr_in6, HAVE_SA_IN6, [#include <netinet/in.h>])
1228 EL_CHECK_NET_TYPE(struct addrinfo, HAVE_ADDRINFO, [#include <netdb.h>])
1230 AC_CHECK_FUNC(getaddrinfo, HAVE_GETADDRINFO=yes, HAVE_GETADDRINFO=no)
1231 if test "$HAVE_GETADDRINFO" != yes; then
1232 AC_CHECK_LIB(inet6, getaddrinfo, HAVE_GETADDRINFO=yes, HAVE_GETADDRINFO=no)
1233 if test "$HAVE_GETADDRINFO" = yes; then
1234 LIBS="$LIBS -linet6"
1239 # ===================================================================
1240 # Checking for X11 (window title restoring).
1241 # ===================================================================
1244 if test x"$no_x" != xyes; then
1246 if test -n "$x_includes"; then
1247 X_CFLAGS="-I$x_includes"
1248 CPPFLAGS="$CPPLAGS $X_CFLAGS"
1249 CFLAGS="$CFLAGS $X_CFLAGS"
1251 if test -n "$x_libraries"; then
1252 LDFLAGS="$LDFLAGS -L$x_libraries"
1255 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]], [[XrmInitialize()]])],[cf_result=yes],[cf_result=no])
1257 if test "$cf_result" = yes; then
1258 if test -n "$x_libraries"; then
1259 LDFLAGS="$LDFLAGS -L$x_libraries"
1262 EL_DEFINE(HAVE_X11, [X11 for restoring window titles])
1268 # ===================================================================
1269 # Backtraces displaying support.
1270 # ===================================================================
1272 AC_CHECK_HEADERS(execinfo.h, HAVE_EXECINFO=yes, HAVE_EXECINFO=no)
1273 # possible checks for other system-specific means go here
1276 # ===================================================================
1277 # Gettext grey zone. Beware.
1278 # ===================================================================
1280 ALL_LINGUAS="af be bg ca cs da de el es et fi fr gl hr hu id is it lt nl nb pl pt pt_BR ro ru sk sr sv tr uk"
1284 # iconv is always used
1285 LIBS="$LIBS $LIBICONV"
1287 dnl AC_MSG_CHECKING([how many characters your English alphabet has])
1288 dnl # f33r d4 l33t... I hope it's portable. :)
1289 dnl cf_result=$((48#z - 48#a + 1));
1290 dnl AC_MSG_RESULT($cf_result)
1293 # ===================================================================
1294 # Compile-time features control
1295 # ===================================================================
1297 EL_ARG_ENABLE(CONFIG_COOKIES, cookies, [Cookies],
1298 [ --disable-cookies disable cookie support])
1300 EL_ARG_ENABLE(CONFIG_FORMHIST, formhist, [Form history],
1301 [ --disable-formhist disable form history support])
1303 EL_ARG_ENABLE(CONFIG_GLOBHIST, globhist, [Global history],
1304 [ --disable-globhist disable global history support])
1307 EL_ARG_ENABLE(CONFIG_MAILCAP, mailcap, [Mailcap],
1308 [ --disable-mailcap disable mailcap support])
1310 EL_ARG_ENABLE(CONFIG_MIMETYPES, mimetypes, [Mimetypes files],
1311 [ --disable-mimetypes disable mimetypes files support])
1314 EL_ARG_DEPEND(CONFIG_IPV6, ipv6,
1315 [HAVE_SA_STORAGE:yes HAVE_SA_IN6:yes HAVE_ADDRINFO:yes HAVE_GETADDRINFO:yes],
1317 [ --disable-ipv6 disable IPv6 support])
1319 EL_ARG_ENABLE(CONFIG_BITTORRENT, bittorrent, [BitTorrent protocol],
1320 [ --enable-bittorrent enable BitTorrent protocol support])
1322 EL_ARG_ENABLE(CONFIG_DATA, data, [Data protocol],
1323 [ --disable-data disable data protocol support])
1325 EL_ARG_ENABLE(CONFIG_URI_REWRITE, uri-rewrite, [URI rewriting],
1326 [ --disable-uri-rewrite disable URI rewrite support])
1328 EL_ARG_DEPEND(CONFIG_CGI, cgi, [HAVE_SETENV_OR_PUTENV:yes], [Local CGI],
1329 [ --enable-cgi enable local CGI support])
1331 EL_ARG_ENABLE(CONFIG_FINGER, finger, [Finger protocol],
1332 [ --enable-finger enable finger protocol support])
1334 # ===================================================================
1336 # ===================================================================
1339 if test "x${enable_fsp}" != xno; then
1340 AC_CHECK_HEADERS(fsplib.h, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1342 if test "$HAVE_FSPLIB" = yes; then
1343 AC_CHECK_LIB(fsplib, fsp_open_session, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1344 if test "$HAVE_FSPLIB" = yes; then
1345 LIBS="$LIBS -lfsplib"
1347 AC_CHECK_LIB(fsp, fsp_open_session, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1348 if test "$HAVE_FSPLIB" = yes; then
1355 EL_ARG_DEPEND(CONFIG_FSP, fsp, [HAVE_FSPLIB:yes], [FSP protocol],
1356 [ --enable-fsp enable FSP protocol support])
1358 if test "x$CONFIG_FSP" = xno; then
1362 EL_ARG_ENABLE(CONFIG_FTP, ftp, [FTP protocol],
1363 [ --disable-ftp disable ftp protocol support])
1365 EL_ARG_ENABLE(CONFIG_GOPHER, gopher, [Gopher protocol],
1366 [ --enable-gopher enable gopher protocol support])
1368 EL_ARG_ENABLE(CONFIG_NNTP, nntp, [NNTP protocol],
1369 [ --enable-nntp enable nntp protocol support])
1371 # ===================================================================
1372 # SMB protocol support.
1373 # ===================================================================
1376 if test "x${enable_smb}" != xno; then
1377 AC_CHECK_HEADERS(libsmbclient.h, HAVE_SMBCLIENT=yes, HAVE_SMBCLIENT=no)
1379 if test "$HAVE_SMBCLIENT" = yes; then
1380 AC_CHECK_LIB(smbclient, smbc_init, HAVE_SMBCLIENT=yes, HAVE_SMBCLIENT=no)
1381 if test "$HAVE_SMBCLIENT" = yes; then
1382 LIBS="$LIBS -lsmbclient"
1387 EL_ARG_DEPEND(CONFIG_SMB, smb, [HAVE_SMBCLIENT:yes], [Samba protocol],
1388 [ --enable-smb enable Samba protocol support])
1390 if test "x$CONFIG_SMB" = xno; then
1395 EL_ARG_ENABLE(CONFIG_MOUSE, mouse, [Mouse handling],
1396 [ --disable-mouse disable mouse support])
1398 # GPM mouse is Linux specific, so ...
1400 EL_ARG_DEPEND(CONFIG_SYSMOUSE, sysmouse,
1401 [CONFIG_MOUSE:yes CONFIG_GPM:no HAVE_SYSMOUSE_HEADER:yes],
1403 [ --disable-sysmouse disable BSD sysmouse support])
1405 EL_ARG_ENABLE(CONFIG_88_COLORS, 88-colors, [88 colors],
1406 [ --enable-88-colors enable 88 color support])
1408 EL_ARG_ENABLE(CONFIG_256_COLORS, 256-colors, [256 colors],
1409 [ --enable-256-colors enable 256 color support])
1411 EL_ARG_ENABLE(CONFIG_TRUE_COLOR, true-color, [true color],
1412 [ --enable-true-color enable true color support])
1414 EL_ARG_ENABLE(CONFIG_EXMODE, exmode, [Exmode interface],
1415 [ --enable-exmode enable exmode (CLI) interface])
1417 EL_ARG_ENABLE(CONFIG_LEDS, leds, [LEDs],
1418 [ --disable-leds disable LEDs support])
1420 EL_ARG_ENABLE(CONFIG_MARKS, marks, [Marks],
1421 [ --disable-marks disable document marks support])
1424 EL_ARG_ENABLE(CONFIG_CSS, css, [Cascading Style Sheets],
1425 [ --disable-css disable Cascading Style Sheet support])
1427 EL_ARG_DEPEND(CONFIG_HTML_HIGHLIGHT, html-highlight, [CONFIG_CSS:yes], [HTML highlighting],
1428 [ --enable-html-highlight HTML highlighting using DOM engine])
1430 # Everything in the tree already uses CONFIG_DOM
1431 # so resolve CONFIG_HTML_HIGHLIGHT to CONFIG_DOM
1432 EL_CONFIG_DEPENDS(CONFIG_DOM, [CONFIG_HTML_HIGHLIGHT], [DOM engine])
1434 EL_ARG_DEPEND(CONFIG_BACKTRACE, backtrace, [HAVE_EXECINFO:yes], [Backtrace],
1435 [ --disable-backtrace disable backtrace support])
1437 EL_ARG_DEPEND(CONFIG_NO_ROOT_EXEC, no-root, [HAVE_GETUID:yes HAVE_GETEUID:yes], [No root exec],
1438 [ --enable-no-root enable prevention of usage by root])
1441 EL_ARG_ENABLE(CONFIG_DEBUG, debug, [Debug mode],
1442 [ --enable-debug enable leak debug and internal error checking])
1444 EL_ARG_DEPEND(CONFIG_FASTMEM, fastmem, [CONFIG_DEBUG:no], [Fast mode],
1445 [ --enable-fastmem enable direct use of system allocation functions, not usable with --enable-debug])
1447 EL_ARG_ENABLE(CONFIG_OWN_LIBC, own-libc, [Own libc stubs],
1448 [ --enable-own-libc force use of internal functions instead of those of system libc])
1450 EL_ARG_ENABLE(CONFIG_SMALL, small, [Small binary],
1451 [ --enable-small reduce binary size as far as possible (but see the bottom of doc/small.txt!)])
1453 EL_ARG_ENABLE(CONFIG_UTF8, utf-8, [UTF-8],
1454 [ --disable-utf-8 disable UTF-8 support])
1456 EL_ARG_DEPEND(CONFIG_COMBINE, combining, [CONFIG_UTF8:yes HAVE_WCWIDTH:yes], [Combining characters],
1457 [ --enable-combining support Unicode combining characters (experimental)])
1460 AC_ARG_ENABLE(weehoofooboomookerchoo,
1462 Also check out the features.conf file for more information about features!
1464 [AC_MSG_ERROR(Are you strange, or what?)])
1467 # ===================================================================
1468 # Decide whether to use TRE
1469 # ===================================================================
1471 # This must be done after the CONFIG_UTF8 check above.
1472 # The first part of the TRE check is separate, to get
1473 # the configure --help output in a sensible order.
1475 # After this section, nothing else must be added to the
1476 # beginning of $LIBS.
1478 if test "$tre_log" = "available"; then
1479 if test "$CONFIG_UTF8" = "yes"; then
1480 # When CONFIG_UTF8 and CONFIG_TRE are both defined,
1481 # src/viewer/text/search.c makes a string of
1482 # unicode_val_T and gives it to regwexec(), which
1483 # expects a string of wchar_t. If the unicode_val_T
1484 # and wchar_t types are too different, this won't
1485 # work, so try to detect that and disable regexp
1486 # operations entirely in that case.
1488 # Currently, this code only compares the sizes of the
1489 # types. src/intl/charsets.h defines unicode_val_T as
1490 # uint32_t, so we check whether wchar_t has exactly 32
1491 # bits. But don't use AC_CHECK_SIZEOF for this, because
1492 # there doesn't seem to be a documented way to get the
1493 # result of that for use in the configure script.
1495 # C99 says the implementation can define
1496 # __STDC_ISO_10646__ if wchar_t values match ISO 10646
1497 # (or Unicode) numbers in all locales. Do not check
1498 # that macro here, because it is too restrictive: it
1499 # should be enough for ELinks if the values match in
1500 # the locales where ELinks is actually run.
1501 AC_MSG_CHECKING([[whether wchar_t is exactly 32-bit]])
1502 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1505 int dummy[(sizeof(wchar_t) * CHAR_BIT == 32) ? 1 : -1];]], [])],
1506 [AC_MSG_RESULT([[yes]])
1508 [AC_MSG_RESULT([[no]])
1509 tre_log="no (unsuitable wchar_t)"])
1511 # If UTF-8 is not used, then wchar_t doesn't matter.
1516 if test "$tre_log" = "TRE"; then
1517 AC_DEFINE([CONFIG_TRE], [1],
1518 [Define as 1 to use the TRE library for regular expression searching. This requires the <tre/regex.h> header file. If you define CONFIG_UTF8 too, then wchar_t must be exactly 32-bit so that it matches unicode_val_T.])
1519 # TRE_CFLAGS will be used only where needed.
1521 # Bug 1081: If both TRE and libc define the regfree function,
1522 # ELinks needs to use the version defined by TRE because
1523 # that's the one compatible with regex_t initialized by the
1524 # regwcomp function of TRE. Therefore put $TRE_LIBS at the
1525 # very beginning of $LIBS so that the linker hopefully finds
1526 # regfree there before it examines libc. In particular,
1527 # $PERL_LIBS appears to often include "-lc".
1529 # This scheme still risks a crash if ELinks is linked with
1530 # some static library that uses GNU <regex.h> extensions that
1531 # TRE does not implement. For example, the library might call
1532 # re_compile_pattern, which is found in GNU libc, and then
1533 # regfree, which is found in TRE and probably crashes with the
1534 # GNU-initialized regex_t. Ways to avoid such crashes:
1536 # - Change TRE so it defines only tre_... functions and does
1537 # not attempt to override the POSIX names by default.
1539 # - Change ELinks to access TRE only via dlopen and dlsym.
1540 # The problem then is how to find the correct file name.
1541 # There might be libtre.so.4 and libtre.so.5 with different
1542 # ABI. How can this configure script detect which of them
1543 # matches the <tre/regex.h> in the include path?
1545 # - Replace the static library with a shared library. At
1546 # least on GNU/Linux, when the shared library is built, the
1547 # linker should note that e.g. regfree is defined in libc
1548 # and has the GLIBC_2.0 version there, and write that
1549 # version string to the shared library as well; because TRE
1550 # does not provide regfree with that version, any regfree
1551 # calls at run time should then get resolved to libc.
1552 LIBS="$TRE_LIBS $LIBS"
1557 AC_SUBST(TRE_CFLAGS)
1559 EL_LOG_CONFIG([CONFIG_TRE], [[Regexp searching]], [[$tre_log]])
1562 # ===================================================================
1563 # Further LDFLAGS tweaks
1564 # ===================================================================
1568 test "$CONFIG_OS_OS2" = yes && LDFLAGS="$LDFLAGS -Zexe"
1569 test "$CONFIG_OS_OS2" = yes && LDFLAGS=`echo "$LDFLAGS" | sed "s/-Zbin-files//g"`
1572 # Check for -rdynamic
1574 # gcc -rdynamic calls ld -export-dynamic, which adds all symbols of
1575 # the executable to its dynamic symbol table. ELinks uses this for
1578 # 1. If ELinks detects a bug, it can try to display a backtrace by
1579 # calling backtrace_symbols_fd() in the GNU libc. The glibc-2.3.6
1580 # manual states users of GNU ld must pass -rdynamic to make the
1581 # symbols available to the program.
1583 # 2. It would eventually be nice to dynamically load shared
1584 # libraries as plugins (bug 73). The plugins must be able to
1585 # call ELinks functions. This can be implemented either by
1586 # registering all callable functions in ELinks-specific data
1587 # structures, or by letting the dynamic linker handle them.
1588 # The latter way requires something equivalent to -rdynamic.
1590 # Because backtraces are not needed for correct operation, and bug
1591 # 73 is not yet being fixed, the configure script and makefiles
1592 # should not complain to the user if they find that -rdynamic does
1593 # not work. Besides, it was reported at elinks-users on 2006-09-12
1594 # that gcc-3.4.2 with "ld: Software Generation Utilities - Solaris
1595 # Link Editors: 5.8-1.284" on Sun Solaris 8 Sparc does not support
1596 # -rdynamic but does something equivalent automatically. (This was
1597 # tested with "nm -D elinks | grep redraw_from_window".)
1599 # With Sun Studio 11 on Solaris 9, we get "cc: Warning: illegal option
1600 # -dynamic"; then, cc proceeds anyway, but the option can prevent the
1601 # linker from finding the libraries listed in -l operands. So this
1602 # -rdynamic check needs to happen after the libraries have already
1603 # been added to $LDFLAGS.
1604 AC_MSG_CHECKING([for -rdynamic])
1605 LDFLAGS_X="$LDFLAGS"
1606 LDFLAGS="-rdynamic $LDFLAGS"
1607 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[have_rdynamic=yes],[have_rdynamic=no])
1608 test "$have_rdynamic" = no && LDFLAGS="$LDFLAGS_X"
1609 AC_MSG_RESULT($have_rdynamic)
1611 # ===================================================================
1612 # Export directory paths
1613 # ===================================================================
1615 # Set up the ``entry points'' if they were not supplied by builder
1616 test "x$prefix" = xNONE && prefix=$ac_default_prefix
1617 test "x$exec_prefix" = xNONE && exec_prefix=${prefix}
1619 # Create CONFDIR #define for config.h
1621 # XXX: This may be dependent on a particular version of autoconf. Whatever,
1622 # it's autoconf fault to force us to do such hacks ;p.
1623 if test x"$sysconfdir" = x"\${prefix}/etc"; then
1624 # sysconfdir is set to its default value... fine, let's append /elinks/
1625 # XXX: We can't modify listing of the default in ./configure --help :-(
1626 sysconfdir_n=`eval echo "$sysconfdir"`
1627 sysconfdir=$sysconfdir_n
1628 (echo "$sysconfdir" | grep elinks >/dev/null 2>/dev/null) || \
1629 sysconfdir="$sysconfdir/elinks"
1633 AC_DEFINE_UNQUOTED(CONFDIR, "$CONFDIR", [Directory containing default config])
1636 # Create LOCALEDIR #define for config.h
1637 LOCALEDIR=`eval echo "$datadir/locale"`
1638 while echo "$LOCALEDIR" | grep "\\$"
1640 LOCALEDIR=`eval echo "$LOCALEDIR"`
1641 done > /dev/null 2> /dev/null
1642 AC_DEFINE_UNQUOTED(LOCALEDIR, "$LOCALEDIR", [Directory containing locales])
1645 # Create LIBDIR #define for config.h
1646 LIBDIR=`eval echo "$libdir"`
1647 AC_DEFINE_UNQUOTED(LIBDIR, "$LIBDIR", [Directory containing libraries])
1650 EL_LOG_CONFIG(CONFDIR, [System configuration directory], [])
1651 EL_LOG_CONFIG(LOCALEDIR, [Locale catalogs directory], [])
1654 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stddef.h>
1655 ]], [[#if !defined(__TINYC__) || !defined(alloca)
1657 #endif ]])],[cf_result=yes],[cf_result=no])
1659 if test "$cf_result" = "yes"; then
1660 AC_DEFINE([HAVE_ALLOCA])
1661 AC_DEFINE([_ALLOCA_H], [1], [Define as 1 if you are using Tiny C Compiler
1662 with the GNU C Library, and <alloca.h> of glibc would otherwise
1663 override the alloca macro defined in <stddef.h> of TCC.
1664 If <alloca.h> of glibc sees the _ALLOCA_H macro, it assumes
1665 it has already been included, and does not redefine alloca.
1666 This might not work in future glibc versions though, because
1667 the names of the #include guard macros are not documented.
1668 The incompatibility has been reported to the tinycc-devel
1669 mailing list on 2008-07-14. If a future version of TCC provides
1670 an <alloca.h> of its own, this hack won't be needed.])
1672 # ===================================================================
1673 # A little fine tuning of gcc specific options (continued)
1674 # ===================================================================
1677 if test "x$ac_cv_c_compiler_gnu" = "xyes"; then
1678 if test "$CONFIG_DEBUG" = "yes"; then
1679 # We want to see all warnings and live with none (in debug mode).
1680 CFLAGS="$CFLAGS -Werror"
1682 GETTEXT_CFLAGS="-Wno-uninitialized"
1684 case "`$CC -dumpversion`" in
1686 # These should be ok using -Werror
1689 # If gcc is version 3.3 (or higher?) it emits lots of false positive
1690 # "dereferencing type-punned pointer will break strict-aliasing rules"
1691 # warnings. Disable them by not doing any strict-aliasing. The
1692 # alternative is just too ugly. Thanks gcc guys!! ;)
1693 CFLAGS="$CFLAGS -fno-strict-aliasing"
1696 CFLAGS="$CFLAGS -fno-strict-aliasing -Wno-pointer-sign -Wno-enum-compare"
1699 # Do not show warnings related to (char * | unsigned char *) type
1701 CFLAGS="$CFLAGS -fno-strict-aliasing -Wno-pointer-sign"
1704 # These should be ok using -Werror
1708 # GCC 4.2.1 warns if we use the address of an object in Boolean context:
1709 # warning: the address of `builtin_modules' will always evaluate as `true'
1710 # This hits the object_lock and foreach_module macros in particular.
1711 # It would be okay to put something in the macros to avoid the warning,
1712 # but currently this seems to require defining parallel macros that skip
1713 # the NULL check, and that's too ugly. So we instead disable the warning.
1714 # GCC 4.2.1 needs -Wno-address, but GCC 4.2 snapshots need -Wno-always-true.
1715 # GCC 4.1.3 recognizes neither and exits with code 1 if they are given.
1716 for warning_flag in -Wno-address -Wno-always-true; do
1717 AC_MSG_CHECKING([whether $CC accepts $warning_flag])
1719 CFLAGS="$CFLAGS $warning_flag"
1720 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1721 [AC_MSG_RESULT([yes])
1723 [AC_MSG_RESULT([no])])
1727 # Bug 1012: Some parts of ELinks do arithmetic with signed integers
1728 # in such a way that an overflow is possible. GCC 4.2.1 warns
1729 # "warning: assuming signed overflow does not occur when assuming
1730 # that (X + c) > X is always true", which may be an incorrect
1731 # optimization (although allowed by the standard), and breaks the
1732 # build with -Werror.
1734 # All of the following tests included -S -Wall -Wextra:
1736 # GCC: (GNU) 4.0.4 20060507 (prerelease) (Debian 4.0.3-3)
1737 # * gcc-4.0 -O0: OK, compares the values
1738 # * gcc-4.0 -O2: assumes no overflow, does not warn
1739 # * gcc-4.0 -O0 -fno-strict-overflow: unrecognized command line option
1740 # * gcc-4.0 -O0 -fwrapv: OK, compares the values
1741 # * gcc-4.0 -O2 -fwrapv: OK, compares the values
1742 # * gcc-4.0 -O0 -ftrapv: OK, calls __addvsi3
1743 # * gcc-4.0 -O2 -ftrapv: assumes no overflow, does not warn
1744 # * gcc-4.0 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1745 # * gcc-4.0 -O2 -fwrapv -ftrapv: compares the values
1747 # GCC: (GNU) 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)
1748 # * gcc-4.1 -O0: assumes no overflow, does not warn
1749 # * gcc-4.1 -O2: assumes no overflow, does not warn
1750 # * gcc-4.1 -O0 -fno-strict-overflow: unrecognized command line option
1751 # * gcc-4.1 -O0 -fwrapv: OK, compares the values
1752 # * gcc-4.1 -O2 -fwrapv: OK, compares the values
1753 # * gcc-4.1 -O0 -ftrapv: OK, calls __addvsi3
1754 # * gcc-4.1 -O2 -ftrapv: compares the values
1755 # * gcc-4.1 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1756 # * gcc-4.1 -O2 -fwrapv -ftrapv: compares the values
1758 # GCC: (GNU) 4.2.1 (Debian 4.2.1-5)
1759 # * gcc-4.2 -O0: OK, compares the values
1760 # * gcc-4.2 -O2: assumes no overflow, warns about it
1761 # * gcc-4.2 -O0 -fno-strict-overflow: OK, compares the values
1762 # * gcc-4.2 -O2 -fno-strict-overflow: OK, compares the values
1763 # * gcc-4.2 -O0 -fwrapv: OK, compares the values
1764 # * gcc-4.2 -O2 -fwrapv: OK, compares the values
1765 # * gcc-4.2 -O0 -ftrapv: OK, calls __addvsi3
1766 # * gcc-4.2 -O2 -ftrapv: compares the values
1767 # * gcc-4.2 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1768 # * gcc-4.2 -O2 -fwrapv -ftrapv: compares the values
1770 # Apparently, -ftrapv does not work reliably at all.
1771 for overflow_flag in -fno-strict-overflow -fwrapv; do
1772 AC_MSG_CHECKING([whether $CC accepts $overflow_flag])
1774 CFLAGS="$CFLAGS $overflow_flag"
1775 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1776 [AC_MSG_RESULT([yes])
1778 [AC_MSG_RESULT([no])])
1783 AC_SUBST(GETTEXT_CFLAGS)
1784 EL_LOG_CONFIG(CFLAGS, [Compiler flags (CFLAGS)], [])
1785 EL_LOG_CONFIG(CPPFLAGS, [Preprocessor flags (CPPFLAGS)], [])
1786 EL_LOG_CONFIG(LDFLAGS, [Linker flags (LDFLAGS)], [])
1787 EL_LOG_CONFIG(LIBS, [Library flags (LIBS)], [])
1789 # ===================================================================
1790 # Colored make output
1791 # ===================================================================
1793 if test $(`which tput` colors) -ge 4; then
1795 AC_SUBST(MAKE_COLOR)
1798 # ===================================================================
1800 # ===================================================================
1804 contrib/elinks.spec \
1805 contrib/lua/hooks.lua \
1806 contrib/conv/w3m2links.awk \
1808 doc/man/man1/elinks.1 \
1809 src/intl/gettext/ref-add.sed \
1810 src/intl/gettext/ref-del.sed
1814 abs_srcdir="$(cd "$srcdir" && pwd)"
1815 # builddir is always absolute!
1816 if test "$abs_srcdir" != "$builddir"; then
1817 # Bootstrap the Makefile creation
1818 echo "include $abs_srcdir/Makefile" > "$builddir/Makefile"
1819 "$MAKE" "SRC=$abs_srcdir" init
1821 # Make cg-status ignore this build directory
1822 echo "*" > "$builddir/.gitignore"
1825 # ===================================================================
1826 # Configuration summary
1827 # ===================================================================
1829 AC_MSG_RESULT(The following feature summary has been saved to features.log)