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 "$CONFIG_OS_WIN32" = yes; then
574 # ===================================================================
575 # Check for SEE (Simple Ecmascript Engine)
576 # ===================================================================
577 AC_ARG_WITH(see, [ --with-see enable Simple Ecmascript Engine (SEE) support],
578 [ if test "x$withval" != xno; then enable_see=yes; fi ])
580 # The following is probably bad, ugly and so on. Stolen from Guile's (1.4)
581 # GUILE_FLAGS but I really don't want to require people to have Guile in order
582 # to compile CVS. Also, the macro seems to be really stupid regarding searching
583 # for Guile in $PATH etc. --pasky
585 CONFIG_ECMASCRIPT_SEE=no
587 if test "$enable_see" = "yes"; then
588 if test -d "$withval"; then
589 SEE_PATH="$withval:$PATH"
594 AC_PATH_PROG(SEE_CONFIG, libsee-config, no, $SEE_PATH)
595 AC_MSG_CHECKING([for SEE (2.0.1131 or later)])
596 if test "$SEE_CONFIG" != no; then
598 SEE_LIBS="`$SEE_CONFIG --libs`"
599 SEE_CFLAGS="`$SEE_CONFIG --cppflags`"
600 CPPFLAGS="$SEE_CFLAGS $CPPFLAGS"
601 LIBS="$SEE_LIBS $LIBS_X"
602 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <see/see.h>]], [[#if SEE_VERSION_API_MAJOR < 2
605 ]])],[cf_result=yes],[cf_result=no])
607 if test "$cf_result" = yes; then
608 LIBS="$SEE_LIBS $LIBS"
609 EL_CONFIG(CONFIG_ECMASCRIPT_SEE, [SEE])
612 AC_MSG_RESULT($cf_result)
614 if test -n "$withval" && test "x$withval" != xno; then
615 AC_MSG_ERROR([SEE not found])
617 AC_MSG_WARN([SEE support disabled])
622 # ===================================================================
623 # Check for SpiderMonkey, optional even if installed.
624 # ===================================================================
626 AC_ARG_WITH(spidermonkey, [ --without-spidermonkey disable SpiderMonkey Mozilla JavaScript engine support],
627 [if test "$withval" = no; then disable_spidermonkey=yes; fi])
629 AC_MSG_CHECKING([for SpiderMonkey (1.5 RC3a or later)])
634 if test -z "$disable_spidermonkey"; then
635 if test ! -d "$withval"; then
638 for spidermonkeydir in "$withval" "" /usr /usr/local /opt/spidermonkey /opt/js; do
639 for spidermonkeyinclude in "/include" "/include/js" "/include/smjs" "/include/mozjs"; do
640 for spidermonkeylib in js smjs mozjs; do
641 if test "$cf_result" = no; then
642 SPIDERMONKEY_LIBS="-L$spidermonkeydir/lib -l$spidermonkeylib"
643 SPIDERMONKEY_CFLAGS="-I$spidermonkeydir$spidermonkeyinclude"
645 LIBS="$SPIDERMONKEY_LIBS $LIBS_X"
646 CFLAGS="$CFLAGS_X $SPIDERMONKEY_CFLAGS"
647 CPPFLAGS="$CPPFLAGS_X $SPIDERMONKEY_CFLAGS"
649 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#define XP_UNIX
651 #include <jsapi.h>]], [[
658 [cf_result=yes],[cf_result=no])
665 AC_MSG_RESULT($cf_result)
666 CONFIG_SPIDERMONKEY="$cf_result"
667 if test "$cf_result" = "yes"; then
668 AC_CHECK_FUNCS([[JS_ReportAllocationOverflow]])
669 AC_CHECK_FUNCS(JS_SetBranchCallback)
670 AC_CHECK_FUNCS(JS_TriggerOperationCallback, HAVE_JS_TRIGGEROPERATIONCALLBACK=yes)
674 if test "x$CONFIG_SPIDERMONKEY" = xyes &&
675 test "x$CONFIG_ECMASCRIPT_SEE" != xyes; then
676 EL_CONFIG(CONFIG_ECMASCRIPT_SMJS, [SpiderMonkey document scripting])
678 CONFIG_ECMASCRIPT_SMJS=no
681 EL_CONFIG_DEPENDS(CONFIG_ECMASCRIPT, [CONFIG_ECMASCRIPT_SEE CONFIG_ECMASCRIPT_SMJS], [ECMAScript (JavaScript)])
682 AC_SUBST(CONFIG_ECMASCRIPT_SEE)
683 AC_SUBST(CONFIG_ECMASCRIPT_SMJS)
685 if test "x$CONFIG_ECMASCRIPT_SMJS" = xyes &&
686 test "x$HAVE_JS_TRIGGEROPERATIONCALLBACK" = xyes &&
687 test "x$HAVE_SETITIMER" = xyes; then
688 EL_CONFIG(CONFIG_ECMASCRIPT_SMJS_HEARTBEAT, [ECMAScript heartbeat support])
690 CONFIG_ECMASCRIPT_SMJS_HEARTBEAT=no
692 AC_SUBST(CONFIG_ECMASCRIPT_SMJS_HEARTBEAT)
695 # ===================================================================
696 # Optional Spidermonkey-based ECMAScript browser scripting
697 # ===================================================================
699 AC_ARG_ENABLE(sm-scripting,
700 [ --disable-sm-scripting ECMAScript browser scripting (requires Spidermonkey)],
701 [if test "$enableval" != no; then enableval="yes"; fi
702 CONFIG_SCRIPTING_SPIDERMONKEY="$enableval";])
704 if test "x$CONFIG_SPIDERMONKEY" = xyes &&
705 test "x$CONFIG_SCRIPTING_SPIDERMONKEY" = xyes; then
706 EL_CONFIG(CONFIG_SCRIPTING_SPIDERMONKEY, [SpiderMonkey])
708 CONFIG_SCRIPTING_SPIDERMONKEY=no
711 if test "x$CONFIG_ECMASCRIPT_SMJS" = xyes ||
712 test "x$CONFIG_SCRIPTING_SPIDERMONKEY" = xyes; then
713 LIBS="$LIBS $SPIDERMONKEY_LIBS"
714 AC_SUBST(SPIDERMONKEY_LIBS)
715 AC_SUBST(SPIDERMONKEY_CFLAGS)
716 AC_SUBST(CONFIG_SPIDERMONKEY)
719 # ===================================================================
720 # Check for Guile, optional even if installed.
721 # ===================================================================
725 AC_ARG_WITH(guile, [ --with-guile enable Guile support],
726 [ if test "x$withval" != xno; then enable_guile=yes; fi ])
728 # The following is probably bad, ugly and so on. Stolen from Guile's (1.4)
729 # GUILE_FLAGS but I really don't want to require people to have Guile in order
730 # to compile CVS. Also, the macro seems to be really stupid regarding searching
731 # for Guile in $PATH etc. --pasky
733 AC_MSG_CHECKING([for Guile])
735 if test "$enable_guile" = "yes"; then
737 ## Based on the GUILE_FLAGS macro.
739 if test -d "$withval"; then
740 GUILE_PATH="$withval:$PATH"
745 AC_PATH_PROG(GUILE_CONFIG, guile-config, no, $GUILE_PATH)
747 ## First, let's just see if we can find Guile at all.
748 if test "$GUILE_CONFIG" != no; then
751 GUILE_LIBS="`guile-config link`"
752 GUILE_CFLAGS="`guile-config compile`"
753 LIBS="$GUILE_LIBS $LIBS"
754 EL_CONFIG(CONFIG_SCRIPTING_GUILE, [Guile])
755 AC_SUBST(GUILE_CFLAGS)
757 ***********************************************************************
758 The Guile support is incomplete and not so well integrated to ELinks
759 yet. That means, e.g., that you have no Guile console and there might
760 not be all the necessary hooks. Also, the Guile interface is not too
761 well tested (success stories heartily welcomed!). See
762 src/scripting/guile/README for further details and hints.
763 ***********************************************************************
766 if test -n "$withval" && test "x$withval" != xno; then
767 AC_MSG_ERROR([Guile not found])
769 AC_MSG_WARN([Guile support disabled])
776 # ===================================================================
778 # ===================================================================
781 AC_ARG_WITH(perl, [ --with-perl enable Perl support],
783 if test "$withval" = yes; then
784 # FIXME: If withval is a valid directory append it to PATH
785 # so that you can specify one of several perl installations.
791 AC_MSG_CHECKING([for Perl])
797 if test "$enable_perl" = "yes"; then
798 PERL_LIBS="`perl -MExtUtils::Embed -e ldopts`"
799 PERL_CFLAGS="`perl -MExtUtils::Embed -e ccopts`"
800 LIBS="$PERL_LIBS $LIBS"
801 CFLAGS="$PERL_CFLAGS $CFLAGS"
802 CPPFLAGS="$CPPFLAGS $PERL_CFLAGS"
803 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
807 ]], [[PerlInterpreter *my_perl = perl_alloc();]])],[cf_result=yes],[cf_result=no])
810 if test "$cf_result"; then AC_MSG_RESULT($cf_result); fi
812 AC_MSG_CHECKING([whether POPpx works without an n_a variable])
813 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
816 extern PerlInterpreter *my_perl;
817 ]], [[dSP; (void) POPpx;]])],[AC_MSG_RESULT([yes])
818 AC_DEFINE([CONFIG_PERL_POPPX_WITHOUT_N_A], [1],
819 [Define if using Perl 5.8.8 or later, where the "POPpx" macro
820 no longer needs an "n_a" variable like it did in 5.8.7])],[AC_MSG_RESULT([no])])
822 if test "$cf_result" != "yes"; then
825 EL_CONFIG(CONFIG_SCRIPTING_PERL, [Perl])
828 CPPFLAGS="$CPPFLAGS_X"
830 AC_SUBST(PERL_CFLAGS)
833 # ===================================================================
835 # ===================================================================
838 AC_ARG_WITH(python, [[ --with-python[=DIR] enable Python support]],
839 [ if test "x$withval" != xno; then enable_python=yes; fi ])
844 AC_MSG_CHECKING([for Python])
846 if test "$enable_python" = "yes"; then
849 if test -d "$withval"; then
850 PYTHON_PATH="$withval:$PATH"
855 AC_PATH_PROG(PYTHON, python, no, $PYTHON_PATH)
857 if test "$PYTHON" != no; then
860 PYTHON_CFLAGS="`$PYTHON -c 'from distutils import sysconfig; print "-I%s -I%s" % (sysconfig.get_python_inc(), sysconfig.get_python_inc(plat_specific=True))'`"
861 PYTHON_LIBS="`$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"))'`"
862 LIBS="$PYTHON_LIBS $LIBS"
863 CPPFLAGS="$CPPFLAGS $PYTHON_CFLAGS"
864 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <Python.h>]], [[Py_Initialize();]])],[cf_result=yes],[cf_result=no])
866 if test "$cf_result" != "yes"; then
869 EL_CONFIG(CONFIG_SCRIPTING_PYTHON, [Python])
870 AC_SUBST(PYTHON_LIBS)
871 AC_SUBST(PYTHON_CFLAGS)
872 CPPFLAGS="$CPPFLAGS_X"
874 ***********************************************************************
875 The Python support is incomplete and not so well integrated to ELinks
876 yet. That means, e.g., that you have no Python console and there might
877 not be all the necessary hooks. Also, the Python interface is not too
878 well tested (success stories heartily welcomed!).
879 ***********************************************************************
883 if test -n "$withval" && test "x$withval" != xno; then
884 AC_MSG_ERROR([Python not found])
886 AC_MSG_WARN([Python support disabled])
894 # ===================================================================
895 # Check for Lua, optional even if installed.
896 # ===================================================================
898 # Do this the long way, as FreeBSD reportedly needs -L<dir> for
899 # anything other than /usr/lib, and Lua is very often in /usr/local/lib.
901 AC_ARG_WITH(lua, [ --without-lua disable Lua support],
902 [if test "$withval" = no; then disable_lua=yes; fi])
903 AC_MSG_CHECKING([for Lua])
908 if test -z "$disable_lua"; then
909 if test ! -d "$withval"; then
912 for luadir in "$withval" "" /usr /usr/local; do
913 for suffix in "" 5.1 51; do
914 if test "$cf_result" = no && ( test -f "$luadir/include/lua.h" || \
915 test -f "$luadir/include/lua$suffix/lua.h" ) ; then
916 LUA_LIBS="-L$luadir/lib -llua$suffix -lm"
917 LUA_CFLAGS="-I$luadir/include -I$luadir/include/lua$suffix"
919 LIBS="$LUA_LIBS $LIBS_X"
920 CFLAGS="$CFLAGS_X $LUA_CFLAGS"
921 CPPFLAGS="$CPPFLAGS_X $LUA_CFLAGS"
923 # Check that it is a compatible Lua version
924 AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <lauxlib.h>]
927 ], [[ lua_State *L = luaL_newstate();
929 lua_pushboolean(L, 1);
930 lua_close(L);]])],[cf_result=yes],[cf_result=no])
936 AC_MSG_RESULT($cf_result)
938 if test "$cf_result" != yes; then
941 EL_CONFIG(CONFIG_SCRIPTING_LUA, [Lua])
942 AC_CHECK_HEADERS(lauxlib.h)
945 CPPFLAGS="$CPPFLAGS_X"
950 # ===================================================================
951 # Check for TRE library
952 # ===================================================================
954 # This section only checks that --without-tre is not given and the
955 # library seems to work, and sets TRE_CFLAGS, TRE_LIBS, and
956 # tre_log. It does not define CONFIG_TRE, and always resets
957 # LIBS and CFLAGS back to their original values.
959 # After any --enable-utf-8 and --disable-utf-8 options have been
960 # handled, a separate section decides whether to actually use TRE.
962 # tre version 0.8.0 or higher is required which have the "tre_" prefix
965 AC_ARG_WITH([[tre]], [[ --without-tre disable TRE regex search support]])
966 if test "$with_tre" = no; then
967 AC_MSG_CHECKING([[for TRE]])
968 AC_MSG_RESULT([[disabled]])
969 tre_log="no (explicitly disabled)"
971 AC_MSG_CHECKING([[for TRE in pkg-config]])
972 if pkg-config tre; then
973 TRE_CFLAGS=`pkg-config --cflags tre`
974 TRE_LIBS=`pkg-config --libs tre`
975 AC_MSG_RESULT([[yes]])
977 # <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513055>
978 # "libtre-dev: /usr/lib/pkgconfig/tre.pc missing"
979 # so we look for the library even if pkg-config doesn't know about it.
982 AC_MSG_RESULT([[no, but let's try defaults]])
985 AC_MSG_CHECKING([[for TRE header and library]])
987 CFLAGS="$TRE_CFLAGS $CFLAGS"
988 LIBS="$TRE_LIBS $LIBS" # must be first, because of regfree conflict
989 AC_TRY_LINK([#include <tre/tre.h>],
992 tre_regwcomp(&re, L"zap", REG_ICASE);
993 tre_regwexec(&re, L"ELIZAPROGRAM", 1, match, 0);],
994 [AC_MSG_RESULT([[yes]])
995 tre_log="available"],
996 [AC_MSG_RESULT([[no]])
997 tre_log="no (TRE not found)"])
1001 # ===================================================================
1002 # Check for Ruby, optional even if installed.
1003 # ===================================================================
1005 EL_CONFIG_SCRIPTING_RUBY
1007 # ===================================================================
1008 # Setup global scripting
1009 # ===================================================================
1011 EL_CONFIG_DEPENDS(CONFIG_SCRIPTING, [CONFIG_SCRIPTING_GUILE CONFIG_SCRIPTING_LUA CONFIG_SCRIPTING_PERL CONFIG_SCRIPTING_PYTHON CONFIG_SCRIPTING_RUBY CONFIG_SCRIPTING_SPIDERMONKEY], [Browser scripting])
1012 AC_SUBST(CONFIG_SCRIPTING_GUILE)
1013 AC_SUBST(CONFIG_SCRIPTING_LUA)
1014 AC_SUBST(CONFIG_SCRIPTING_PERL)
1015 AC_SUBST(CONFIG_SCRIPTING_PYTHON)
1016 AC_SUBST(CONFIG_SCRIPTING_RUBY)
1017 AC_SUBST(CONFIG_SCRIPTING_SPIDERMONKEY)
1018 AC_SUBST(CONFIG_SCRIPTING)
1021 # ===================================================================
1022 # Check for SSL support.
1023 # ===================================================================
1025 # We by default use OpenSSL, and we always prefer it. However, when GNUTLS
1026 # is enabled, we won't try to use OpenSSL anymore.
1028 # For wiping SSL hooks..
1031 chosen_ssl_library=""
1033 AC_ARG_WITH(gnutls, [[ --without-gnutls disable GNUTLS SSL support]])
1034 AC_ARG_WITH(gnutls, [[ --with-gnutls enable GNUTLS SSL support]],
1035 [case "$with_gnutls" in
1037 "yes") chosen_ssl_library="GNUTLS" ;;
1038 *) chosen_ssl_library="GNUTLS"
1039 AC_MSG_WARN([[Support for --with-gnutls=DIR has been removed.
1040 You may have to set the PKG_CONFIG_PATH environment variable instead.]]) ;;
1043 AC_ARG_WITH(openssl, [[ --without-openssl disable OpenSSL support]])
1044 AC_ARG_WITH(openssl, [[ --with-openssl[=DIR] enable OpenSSL support (default)]],
1045 [case "$with_openssl" in
1047 *) chosen_ssl_library="OpenSSL" ;;
1050 AC_ARG_WITH(nss_compat_ossl, [[ --with-nss_compat_ossl[=DIR]
1051 NSS compatibility SSL libraries/include files]],
1052 [case "$with_nss_compat_ossl" in
1054 *) chosen_ssl_library="nss_compat_ossl" ;;
1057 # ---- nss_compat_ossl
1059 if test "$with_nss_compat_ossl" = no; then
1060 # explicitly disabled
1062 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "nss_compat_ossl"; then
1063 # not used, because $chosen_ssl_library was chosen
1065 elif test -z "${with_nss_compat_ossl+set}"; then
1066 # SSL_library_init() in nss_compat_ossl 0.9.2 calls exit(1)
1067 # with no error message if there is no certificate database.
1068 # https://bugzilla.redhat.com/show_bug.cgi?id=463437
1069 # So ELinks uses nss_compat_ossl only if explicitly requested.
1073 if test "$with_nss_compat_ossl" = yes; then
1074 if pkg-config nss; then
1075 CFLAGS="$CFLAGS_X `pkg-config --cflags nss`"
1076 LIBS="$LIBS_X `pkg-config --libs nss`"
1078 with_nss_compat_ossl=no
1081 # Without pkg-config, we'll kludge in some defaults
1082 CFLAGS="$CFLAGS_X -I$with_nss_compat_ossl/include -I/usr/include/nss3 -I/usr/include/nspr4"
1083 LIBS="$LIBS_X -L$with_nss_compat_ossl/lib -lssl3 -lsmime3 -lnss3 -lplds4 -lplc4 -lnspr4 -lpthread -ldl"
1085 AC_CHECK_HEADERS(nss_compat_ossl/nss_compat_ossl.h,, [with_nss_compat_ossl=no], [#define NSS_COMPAT_OSSL_H])
1086 AC_CHECK_LIB(nss_compat_ossl, X509_free,, [with_nss_compat_ossl=no])
1088 if test "$with_nss_compat_ossl" = "no"; then
1091 LIBS="$LIBS -lnss_compat_ossl"
1092 EL_CONFIG(CONFIG_NSS_COMPAT_OSSL, [nss_compat_ossl])
1093 chosen_ssl_library="nss_compat_ossl"
1099 AC_MSG_CHECKING([for OpenSSL])
1103 if test "$with_openssl" = no; then
1104 cf_result="explicitly disabled"
1106 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "OpenSSL"; then
1107 cf_result="not used, because $chosen_ssl_library was chosen"
1111 for ssldir in "$with_openssl" "" /usr /usr/local/openssl \
1112 /usr/lib/openssl /usr/local/ssl \
1113 /usr/local/www /usr/lib/ssl /usr/local \
1114 /usr/pkg /opt /opt/openssl; do
1115 if test "$cf_result" = no; then
1116 if test -d "$ssldir"; then
1117 OPENSSL_CFLAGS="-I$ssldir/include"
1118 LIBS="-L$ssldir/lib -lssl -lcrypto $LIBS_X"
1119 CFLAGS="$CFLAGS_X $OPENSSL_CFLAGS"
1120 CPPFLAGS="$CPPFLAGS_X $OPENSSL_CFLAGS"
1121 # # FIXME: This created serious portability problems. --pasky
1122 # if test "$CC" == "gcc"; then
1123 # # I'm not sure about compatibility here. --pasky
1124 # LIBS="$LIBS -R$ssldir/lib"
1127 LIBS="-lssl -lcrypto $LIBS_X"
1129 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <openssl/ssl.h>]], [[OpenSSL_add_all_algorithms()]])],[cf_result=yes],[cf_result=no])
1130 if test "$cf_result" != yes; then
1131 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <openssl/ssl.h>]], [[SSLeay_add_ssl_algorithms()]])],[cf_result=yes],[cf_result=no])
1136 if test "$cf_result" != yes; then
1137 if test "${with_openssl-no}" != "no"; then
1138 AC_MSG_ERROR([OpenSSL not found])
1142 EL_CONFIG(CONFIG_OPENSSL, [OpenSSL])
1143 chosen_ssl_library="OpenSSL"
1146 AC_SUBST(OPENSSL_CFLAGS)
1150 AC_MSG_RESULT($cf_result)
1154 # GnuTLS 2.2.0 changed libgnutls-openssl from GPLv2+
1155 # to GPLv3+. Don't link that with the GPLv2 ELinks.
1156 # ELinks will use its internal MD5 code instead.
1157 CONFIG_GNUTLS_OPENSSL_COMPAT=no
1159 if test "$with_gnutls" = no; then
1160 AC_MSG_CHECKING([[for GNUTLS]])
1161 AC_MSG_RESULT([[explicitly disabled]])
1163 elif test -n "$chosen_ssl_library" && test "$chosen_ssl_library" != "GNUTLS"; then
1164 AC_MSG_CHECKING([[for GNUTLS]])
1165 AC_MSG_RESULT([[not used, because $chosen_ssl_library was chosen]])
1169 AC_MSG_CHECKING([[for GNUTLS (1.2 or later) in pkg-config]])
1170 if pkg-config --atleast-version=1.2 gnutls; then
1171 GNUTLS_CFLAGS=`pkg-config --cflags gnutls`
1172 GNUTLS_LIBS=`pkg-config --libs gnutls`
1173 AC_MSG_RESULT([[yes: $GNUTLS_CFLAGS $GNUTLS_LIBS]])
1176 LIBS="$GNUTLS_LIBS $LIBS"
1177 CFLAGS="$CFLAGS $GNUTLS_CFLAGS"
1178 CPPFLAGS="$CPPFLAGS $GNUTLS_CFLAGS"
1180 # Verify if it's really usable. gnutls_session was
1181 # renamed to gnutls_session_t before GNU TLS 1.2.0
1182 # (on 2004-06-13); ELinks now requires this.
1183 AC_MSG_CHECKING([[whether GNUTLS can be linked with]])
1184 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <gnutls/gnutls.h>]],
1185 [[gnutls_session_t dummy;
1186 gnutls_check_version(NULL)]])],
1189 AC_MSG_RESULT([[$cf_result]])
1191 if test "$cf_result" = yes; then
1192 # According to gnutls/NEWS, the function was originally
1193 # added as gnutls_set_default_priority2 in GNUTLS 2.1.4
1194 # (released 2007-10-27) and then renamed to
1195 # gnutls_priority_set_direct in GNUTLS 2.1.7 (released
1197 AC_CHECK_FUNCS([gnutls_priority_set_direct])
1202 AC_MSG_RESULT([[$cf_result]])
1205 if test "$cf_result" = yes; then
1206 EL_CONFIG(CONFIG_GNUTLS, [GNUTLS])
1207 chosen_ssl_library="GNUTLS"
1209 # gcry_create_nounce is part of libgcrypt
1210 LIBGCRYPT_CFLAGS=`libgcrypt-config --cflags`
1211 LIBGCRYPT_LIBS=`libgcrypt-config --libs`
1213 LIBS="$LIBGCRYPT_LIBS $GNUTLS_LIBS $LIBS"
1214 AC_SUBST(LIBGCRYPT_CFLAGS)
1215 AC_SUBST(GNUTLS_CFLAGS)
1217 elif test "${with_gnutls-no}" != "no"; then
1218 AC_MSG_ERROR([[GNUTLS (1.2 or later) not found. ELinks no longer supports GNUTLS 1.1.]])
1224 EL_CONFIG_DEPENDS(CONFIG_SSL, [CONFIG_OPENSSL CONFIG_GNUTLS CONFIG_NSS_COMPAT_OSSL], [SSL])
1225 AC_SUBST(CONFIG_GNUTLS_OPENSSL_COMPAT)
1226 AC_SUBST(CONFIG_OPENSSL)
1227 AC_SUBST(CONFIG_GNUTLS)
1228 AC_SUBST(CONFIG_NSS_COMPAT_OSSL)
1232 AC_MSG_CHECKING([whether to be or not to be])
1233 AC_MSG_RESULT([needs to be determined experimentally])
1235 # ===================================================================
1236 # Check for IPv6 support and related functions.
1237 # ===================================================================
1239 EL_CHECK_NET_TYPE(struct sockaddr_storage, HAVE_SA_STORAGE, [])
1240 EL_CHECK_NET_TYPE(struct sockaddr_in6, HAVE_SA_IN6, [#include <netinet/in.h>])
1241 EL_CHECK_NET_TYPE(struct addrinfo, HAVE_ADDRINFO, [#include <netdb.h>])
1243 AC_CHECK_FUNC(getaddrinfo, HAVE_GETADDRINFO=yes, HAVE_GETADDRINFO=no)
1244 if test "$HAVE_GETADDRINFO" != yes; then
1245 AC_CHECK_LIB(inet6, getaddrinfo, HAVE_GETADDRINFO=yes, HAVE_GETADDRINFO=no)
1246 if test "$HAVE_GETADDRINFO" = yes; then
1247 LIBS="$LIBS -linet6"
1252 # ===================================================================
1253 # Checking for X11 (window title restoring).
1254 # ===================================================================
1257 if test x"$no_x" != xyes; then
1259 if test -n "$x_includes"; then
1260 X_CFLAGS="-I$x_includes"
1261 CPPFLAGS="$CPPLAGS $X_CFLAGS"
1262 CFLAGS="$CFLAGS $X_CFLAGS"
1264 if test -n "$x_libraries"; then
1265 LDFLAGS="$LDFLAGS -L$x_libraries"
1268 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]], [[XrmInitialize()]])],[cf_result=yes],[cf_result=no])
1270 if test "$cf_result" = yes; then
1271 if test -n "$x_libraries"; then
1272 LDFLAGS="$LDFLAGS -L$x_libraries"
1275 EL_DEFINE(HAVE_X11, [X11 for restoring window titles])
1281 # ===================================================================
1282 # Backtraces displaying support.
1283 # ===================================================================
1285 AC_CHECK_HEADERS(execinfo.h, HAVE_EXECINFO=yes, HAVE_EXECINFO=no)
1286 # possible checks for other system-specific means go here
1289 # ===================================================================
1290 # Gettext grey zone. Beware.
1291 # ===================================================================
1293 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"
1297 # iconv is always used
1298 LIBS="$LIBS $LIBICONV"
1300 dnl AC_MSG_CHECKING([how many characters your English alphabet has])
1301 dnl # f33r d4 l33t... I hope it's portable. :)
1302 dnl cf_result=$((48#z - 48#a + 1));
1303 dnl AC_MSG_RESULT($cf_result)
1306 # ===================================================================
1307 # Compile-time features control
1308 # ===================================================================
1310 EL_ARG_ENABLE(CONFIG_COOKIES, cookies, [Cookies],
1311 [ --disable-cookies disable cookie support])
1313 EL_ARG_ENABLE(CONFIG_FORMHIST, formhist, [Form history],
1314 [ --disable-formhist disable form history support])
1316 EL_ARG_ENABLE(CONFIG_GLOBHIST, globhist, [Global history],
1317 [ --disable-globhist disable global history support])
1320 EL_ARG_ENABLE(CONFIG_MAILCAP, mailcap, [Mailcap],
1321 [ --disable-mailcap disable mailcap support])
1323 EL_ARG_ENABLE(CONFIG_MIMETYPES, mimetypes, [Mimetypes files],
1324 [ --disable-mimetypes disable mimetypes files support])
1327 EL_ARG_DEPEND(CONFIG_IPV6, ipv6,
1328 [HAVE_SA_STORAGE:yes HAVE_SA_IN6:yes HAVE_ADDRINFO:yes HAVE_GETADDRINFO:yes],
1330 [ --disable-ipv6 disable IPv6 support])
1332 EL_ARG_ENABLE(CONFIG_BITTORRENT, bittorrent, [BitTorrent protocol],
1333 [ --enable-bittorrent enable BitTorrent protocol support])
1335 EL_ARG_ENABLE(CONFIG_DATA, data, [Data protocol],
1336 [ --disable-data disable data protocol support])
1338 EL_ARG_ENABLE(CONFIG_URI_REWRITE, uri-rewrite, [URI rewriting],
1339 [ --disable-uri-rewrite disable URI rewrite support])
1341 EL_ARG_DEPEND(CONFIG_CGI, cgi, [HAVE_SETENV_OR_PUTENV:yes], [Local CGI],
1342 [ --enable-cgi enable local CGI support])
1344 EL_ARG_ENABLE(CONFIG_FINGER, finger, [Finger protocol],
1345 [ --enable-finger enable finger protocol support])
1347 # ===================================================================
1349 # ===================================================================
1352 if test "x${enable_fsp}" != xno; then
1353 AC_CHECK_HEADERS(fsplib.h, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1355 if test "$HAVE_FSPLIB" = yes; then
1356 AC_CHECK_LIB(fsplib, fsp_open_session, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1357 if test "$HAVE_FSPLIB" = yes; then
1358 LIBS="$LIBS -lfsplib"
1360 AC_CHECK_LIB(fsp, fsp_open_session, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
1361 if test "$HAVE_FSPLIB" = yes; then
1368 EL_ARG_DEPEND(CONFIG_FSP, fsp, [HAVE_FSPLIB:yes], [FSP protocol],
1369 [ --enable-fsp enable FSP protocol support])
1371 if test "x$CONFIG_FSP" = xno; then
1375 EL_ARG_ENABLE(CONFIG_FTP, ftp, [FTP protocol],
1376 [ --disable-ftp disable ftp protocol support])
1378 EL_ARG_ENABLE(CONFIG_GOPHER, gopher, [Gopher protocol],
1379 [ --enable-gopher enable gopher protocol support])
1381 EL_ARG_ENABLE(CONFIG_NNTP, nntp, [NNTP protocol],
1382 [ --enable-nntp enable nntp protocol support])
1384 # ===================================================================
1385 # SMB protocol support.
1386 # ===================================================================
1389 if test "x${enable_smb}" != xno; then
1390 AC_CHECK_HEADERS(libsmbclient.h, HAVE_SMBCLIENT=yes, HAVE_SMBCLIENT=no)
1392 if test "$HAVE_SMBCLIENT" = yes; then
1393 AC_CHECK_LIB(smbclient, smbc_init, HAVE_SMBCLIENT=yes, HAVE_SMBCLIENT=no)
1394 if test "$HAVE_SMBCLIENT" = yes; then
1395 LIBS="$LIBS -lsmbclient"
1400 EL_ARG_DEPEND(CONFIG_SMB, smb, [HAVE_SMBCLIENT:yes], [Samba protocol],
1401 [ --enable-smb enable Samba protocol support])
1403 if test "x$CONFIG_SMB" = xno; then
1408 EL_ARG_ENABLE(CONFIG_MOUSE, mouse, [Mouse handling],
1409 [ --disable-mouse disable mouse support])
1411 # GPM mouse is Linux specific, so ...
1413 EL_ARG_DEPEND(CONFIG_SYSMOUSE, sysmouse,
1414 [CONFIG_MOUSE:yes CONFIG_GPM:no HAVE_SYSMOUSE_HEADER:yes],
1416 [ --disable-sysmouse disable BSD sysmouse support])
1418 EL_ARG_ENABLE(CONFIG_88_COLORS, 88-colors, [88 colors],
1419 [ --enable-88-colors enable 88 color support])
1421 EL_ARG_ENABLE(CONFIG_256_COLORS, 256-colors, [256 colors],
1422 [ --enable-256-colors enable 256 color support])
1424 EL_ARG_ENABLE(CONFIG_TRUE_COLOR, true-color, [true color],
1425 [ --enable-true-color enable true color support])
1427 EL_ARG_ENABLE(CONFIG_EXMODE, exmode, [Exmode interface],
1428 [ --enable-exmode enable exmode (CLI) interface])
1430 EL_ARG_ENABLE(CONFIG_LEDS, leds, [LEDs],
1431 [ --disable-leds disable LEDs support])
1433 EL_ARG_ENABLE(CONFIG_MARKS, marks, [Marks],
1434 [ --disable-marks disable document marks support])
1437 EL_ARG_ENABLE(CONFIG_CSS, css, [Cascading Style Sheets],
1438 [ --disable-css disable Cascading Style Sheet support])
1440 EL_ARG_DEPEND(CONFIG_HTML_HIGHLIGHT, html-highlight, [CONFIG_CSS:yes], [HTML highlighting],
1441 [ --enable-html-highlight HTML highlighting using DOM engine])
1443 # Everything in the tree already uses CONFIG_DOM
1444 # so resolve CONFIG_HTML_HIGHLIGHT to CONFIG_DOM
1445 EL_CONFIG_DEPENDS(CONFIG_DOM, [CONFIG_HTML_HIGHLIGHT], [DOM engine])
1447 EL_ARG_DEPEND(CONFIG_BACKTRACE, backtrace, [HAVE_EXECINFO:yes], [Backtrace],
1448 [ --disable-backtrace disable backtrace support])
1450 EL_ARG_DEPEND(CONFIG_NO_ROOT_EXEC, no-root, [HAVE_GETUID:yes HAVE_GETEUID:yes], [No root exec],
1451 [ --enable-no-root enable prevention of usage by root])
1454 EL_ARG_ENABLE(CONFIG_DEBUG, debug, [Debug mode],
1455 [ --enable-debug enable leak debug and internal error checking])
1457 EL_ARG_DEPEND(CONFIG_FASTMEM, fastmem, [CONFIG_DEBUG:no], [Fast mode],
1458 [ --enable-fastmem enable direct use of system allocation functions, not usable with --enable-debug])
1460 EL_ARG_ENABLE(CONFIG_OWN_LIBC, own-libc, [Own libc stubs],
1461 [ --enable-own-libc force use of internal functions instead of those of system libc])
1463 EL_ARG_ENABLE(CONFIG_SMALL, small, [Small binary],
1464 [ --enable-small reduce binary size as far as possible (but see the bottom of doc/small.txt!)])
1466 EL_ARG_ENABLE(CONFIG_UTF8, utf-8, [UTF-8],
1467 [ --disable-utf-8 disable UTF-8 support])
1469 EL_ARG_DEPEND(CONFIG_COMBINE, combining, [CONFIG_UTF8:yes HAVE_WCWIDTH:yes], [Combining characters],
1470 [ --enable-combining support Unicode combining characters (experimental)])
1473 AC_ARG_ENABLE(weehoofooboomookerchoo,
1475 Also check out the features.conf file for more information about features!
1477 [AC_MSG_ERROR(Are you strange, or what?)])
1480 # ===================================================================
1481 # Decide whether to use TRE
1482 # ===================================================================
1484 # This must be done after the CONFIG_UTF8 check above.
1485 # The first part of the TRE check is separate, to get
1486 # the configure --help output in a sensible order.
1488 # After this section, nothing else must be added to the
1489 # beginning of $LIBS.
1491 if test "$tre_log" = "available"; then
1492 if test "$CONFIG_UTF8" = "yes"; then
1493 # When CONFIG_UTF8 and CONFIG_TRE are both defined,
1494 # src/viewer/text/search.c makes a string of
1495 # unicode_val_T and gives it to regwexec(), which
1496 # expects a string of wchar_t. If the unicode_val_T
1497 # and wchar_t types are too different, this won't
1498 # work, so try to detect that and disable regexp
1499 # operations entirely in that case.
1501 # Currently, this code only compares the sizes of the
1502 # types. src/intl/charsets.h defines unicode_val_T as
1503 # uint32_t, so we check whether wchar_t has exactly 32
1504 # bits. But don't use AC_CHECK_SIZEOF for this, because
1505 # there doesn't seem to be a documented way to get the
1506 # result of that for use in the configure script.
1508 # C99 says the implementation can define
1509 # __STDC_ISO_10646__ if wchar_t values match ISO 10646
1510 # (or Unicode) numbers in all locales. Do not check
1511 # that macro here, because it is too restrictive: it
1512 # should be enough for ELinks if the values match in
1513 # the locales where ELinks is actually run.
1514 AC_MSG_CHECKING([[whether wchar_t is exactly 32-bit]])
1515 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1518 int dummy[(sizeof(wchar_t) * CHAR_BIT == 32) ? 1 : -1];]], [])],
1519 [AC_MSG_RESULT([[yes]])
1521 [AC_MSG_RESULT([[no]])
1522 tre_log="no (unsuitable wchar_t)"])
1524 # If UTF-8 is not used, then wchar_t doesn't matter.
1529 if test "$tre_log" = "TRE"; then
1530 AC_DEFINE([CONFIG_TRE], [1],
1531 [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.])
1532 # TRE_CFLAGS will be used only where needed.
1534 # Bug 1081: If both TRE and libc define the regfree function,
1535 # ELinks needs to use the version defined by TRE because
1536 # that's the one compatible with regex_t initialized by the
1537 # regwcomp function of TRE. Therefore put $TRE_LIBS at the
1538 # very beginning of $LIBS so that the linker hopefully finds
1539 # regfree there before it examines libc. In particular,
1540 # $PERL_LIBS appears to often include "-lc".
1542 # This scheme still risks a crash if ELinks is linked with
1543 # some static library that uses GNU <regex.h> extensions that
1544 # TRE does not implement. For example, the library might call
1545 # re_compile_pattern, which is found in GNU libc, and then
1546 # regfree, which is found in TRE and probably crashes with the
1547 # GNU-initialized regex_t. Ways to avoid such crashes:
1549 # - Change TRE so it defines only tre_... functions and does
1550 # not attempt to override the POSIX names by default.
1552 # - Change ELinks to access TRE only via dlopen and dlsym.
1553 # The problem then is how to find the correct file name.
1554 # There might be libtre.so.4 and libtre.so.5 with different
1555 # ABI. How can this configure script detect which of them
1556 # matches the <tre/regex.h> in the include path?
1558 # - Replace the static library with a shared library. At
1559 # least on GNU/Linux, when the shared library is built, the
1560 # linker should note that e.g. regfree is defined in libc
1561 # and has the GLIBC_2.0 version there, and write that
1562 # version string to the shared library as well; because TRE
1563 # does not provide regfree with that version, any regfree
1564 # calls at run time should then get resolved to libc.
1565 LIBS="$TRE_LIBS $LIBS"
1570 AC_SUBST(TRE_CFLAGS)
1572 EL_LOG_CONFIG([CONFIG_TRE], [[Regexp searching]], [[$tre_log]])
1575 # ===================================================================
1576 # Further LDFLAGS tweaks
1577 # ===================================================================
1581 test "$CONFIG_OS_OS2" = yes && LDFLAGS="$LDFLAGS -Zexe"
1582 test "$CONFIG_OS_OS2" = yes && LDFLAGS=`echo "$LDFLAGS" | sed "s/-Zbin-files//g"`
1585 # Check for -rdynamic
1587 # gcc -rdynamic calls ld -export-dynamic, which adds all symbols of
1588 # the executable to its dynamic symbol table. ELinks uses this for
1591 # 1. If ELinks detects a bug, it can try to display a backtrace by
1592 # calling backtrace_symbols_fd() in the GNU libc. The glibc-2.3.6
1593 # manual states users of GNU ld must pass -rdynamic to make the
1594 # symbols available to the program.
1596 # 2. It would eventually be nice to dynamically load shared
1597 # libraries as plugins (bug 73). The plugins must be able to
1598 # call ELinks functions. This can be implemented either by
1599 # registering all callable functions in ELinks-specific data
1600 # structures, or by letting the dynamic linker handle them.
1601 # The latter way requires something equivalent to -rdynamic.
1603 # Because backtraces are not needed for correct operation, and bug
1604 # 73 is not yet being fixed, the configure script and makefiles
1605 # should not complain to the user if they find that -rdynamic does
1606 # not work. Besides, it was reported at elinks-users on 2006-09-12
1607 # that gcc-3.4.2 with "ld: Software Generation Utilities - Solaris
1608 # Link Editors: 5.8-1.284" on Sun Solaris 8 Sparc does not support
1609 # -rdynamic but does something equivalent automatically. (This was
1610 # tested with "nm -D elinks | grep redraw_from_window".)
1612 # With Sun Studio 11 on Solaris 9, we get "cc: Warning: illegal option
1613 # -dynamic"; then, cc proceeds anyway, but the option can prevent the
1614 # linker from finding the libraries listed in -l operands. So this
1615 # -rdynamic check needs to happen after the libraries have already
1616 # been added to $LDFLAGS.
1617 AC_MSG_CHECKING([for -rdynamic])
1618 LDFLAGS_X="$LDFLAGS"
1619 LDFLAGS="-rdynamic $LDFLAGS"
1620 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[have_rdynamic=yes],[have_rdynamic=no])
1621 test "$have_rdynamic" = no && LDFLAGS="$LDFLAGS_X"
1622 AC_MSG_RESULT($have_rdynamic)
1624 # ===================================================================
1625 # Export directory paths
1626 # ===================================================================
1628 # Set up the ``entry points'' if they were not supplied by builder
1629 test "x$prefix" = xNONE && prefix=$ac_default_prefix
1630 test "x$exec_prefix" = xNONE && exec_prefix=${prefix}
1632 # Create CONFDIR #define for config.h
1634 # XXX: This may be dependent on a particular version of autoconf. Whatever,
1635 # it's autoconf fault to force us to do such hacks ;p.
1636 if test x"$sysconfdir" = x"\${prefix}/etc"; then
1637 # sysconfdir is set to its default value... fine, let's append /elinks/
1638 # XXX: We can't modify listing of the default in ./configure --help :-(
1639 sysconfdir_n=`eval echo "$sysconfdir"`
1640 sysconfdir=$sysconfdir_n
1641 (echo "$sysconfdir" | grep elinks >/dev/null 2>/dev/null) || \
1642 sysconfdir="$sysconfdir/elinks"
1646 AC_DEFINE_UNQUOTED(CONFDIR, "$CONFDIR", [Directory containing default config])
1649 # Create LOCALEDIR #define for config.h
1650 LOCALEDIR=`eval echo "$datadir/locale"`
1651 while echo "$LOCALEDIR" | grep "\\$"
1653 LOCALEDIR=`eval echo "$LOCALEDIR"`
1654 done > /dev/null 2> /dev/null
1655 AC_DEFINE_UNQUOTED(LOCALEDIR, "$LOCALEDIR", [Directory containing locales])
1658 # Create LIBDIR #define for config.h
1659 LIBDIR=`eval echo "$libdir"`
1660 AC_DEFINE_UNQUOTED(LIBDIR, "$LIBDIR", [Directory containing libraries])
1663 EL_LOG_CONFIG(CONFDIR, [System configuration directory], [])
1664 EL_LOG_CONFIG(LOCALEDIR, [Locale catalogs directory], [])
1667 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stddef.h>
1668 ]], [[#if !defined(__TINYC__) || !defined(alloca)
1670 #endif ]])],[cf_result=yes],[cf_result=no])
1672 if test "$cf_result" = "yes"; then
1673 AC_DEFINE([HAVE_ALLOCA])
1674 AC_DEFINE([_ALLOCA_H], [1], [Define as 1 if you are using Tiny C Compiler
1675 with the GNU C Library, and <alloca.h> of glibc would otherwise
1676 override the alloca macro defined in <stddef.h> of TCC.
1677 If <alloca.h> of glibc sees the _ALLOCA_H macro, it assumes
1678 it has already been included, and does not redefine alloca.
1679 This might not work in future glibc versions though, because
1680 the names of the #include guard macros are not documented.
1681 The incompatibility has been reported to the tinycc-devel
1682 mailing list on 2008-07-14. If a future version of TCC provides
1683 an <alloca.h> of its own, this hack won't be needed.])
1685 # ===================================================================
1686 # A little fine tuning of gcc specific options (continued)
1687 # ===================================================================
1689 if test "x$ac_cv_c_compiler_gnu" = "xyes"; then
1690 if test "$CONFIG_DEBUG" = "yes"; then
1691 # We want to see all warnings and live with none (in debug mode).
1692 CFLAGS="$CFLAGS -Werror"
1695 case "`$CC -dumpversion`" in
1697 # These should be ok using -Werror
1700 # If gcc is version 3.3 (or higher?) it emits lots of false positive
1701 # "dereferencing type-punned pointer will break strict-aliasing rules"
1702 # warnings. Disable them by not doing any strict-aliasing. The
1703 # alternative is just too ugly. Thanks gcc guys!! ;)
1704 CFLAGS="$CFLAGS -fno-strict-aliasing"
1707 CFLAGS="$CFLAGS -fno-strict-aliasing -Wno-pointer-sign -Wno-enum-compare"
1710 # Do not show warnings related to (char * | unsigned char *) type
1712 CFLAGS="$CFLAGS -fno-strict-aliasing -Wno-pointer-sign"
1715 # These should be ok using -Werror
1719 # GCC 4.2.1 warns if we use the address of an object in Boolean context:
1720 # warning: the address of `builtin_modules' will always evaluate as `true'
1721 # This hits the object_lock and foreach_module macros in particular.
1722 # It would be okay to put something in the macros to avoid the warning,
1723 # but currently this seems to require defining parallel macros that skip
1724 # the NULL check, and that's too ugly. So we instead disable the warning.
1725 # GCC 4.2.1 needs -Wno-address, but GCC 4.2 snapshots need -Wno-always-true.
1726 # GCC 4.1.3 recognizes neither and exits with code 1 if they are given.
1727 for warning_flag in -Wno-address -Wno-always-true; do
1728 AC_MSG_CHECKING([whether $CC accepts $warning_flag])
1730 CFLAGS="$CFLAGS $warning_flag"
1731 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1732 [AC_MSG_RESULT([yes])
1734 [AC_MSG_RESULT([no])])
1738 # Bug 1012: Some parts of ELinks do arithmetic with signed integers
1739 # in such a way that an overflow is possible. GCC 4.2.1 warns
1740 # "warning: assuming signed overflow does not occur when assuming
1741 # that (X + c) > X is always true", which may be an incorrect
1742 # optimization (although allowed by the standard), and breaks the
1743 # build with -Werror.
1745 # All of the following tests included -S -Wall -Wextra:
1747 # GCC: (GNU) 4.0.4 20060507 (prerelease) (Debian 4.0.3-3)
1748 # * gcc-4.0 -O0: OK, compares the values
1749 # * gcc-4.0 -O2: assumes no overflow, does not warn
1750 # * gcc-4.0 -O0 -fno-strict-overflow: unrecognized command line option
1751 # * gcc-4.0 -O0 -fwrapv: OK, compares the values
1752 # * gcc-4.0 -O2 -fwrapv: OK, compares the values
1753 # * gcc-4.0 -O0 -ftrapv: OK, calls __addvsi3
1754 # * gcc-4.0 -O2 -ftrapv: assumes no overflow, does not warn
1755 # * gcc-4.0 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1756 # * gcc-4.0 -O2 -fwrapv -ftrapv: compares the values
1758 # GCC: (GNU) 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)
1759 # * gcc-4.1 -O0: assumes no overflow, does not warn
1760 # * gcc-4.1 -O2: assumes no overflow, does not warn
1761 # * gcc-4.1 -O0 -fno-strict-overflow: unrecognized command line option
1762 # * gcc-4.1 -O0 -fwrapv: OK, compares the values
1763 # * gcc-4.1 -O2 -fwrapv: OK, compares the values
1764 # * gcc-4.1 -O0 -ftrapv: OK, calls __addvsi3
1765 # * gcc-4.1 -O2 -ftrapv: compares the values
1766 # * gcc-4.1 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1767 # * gcc-4.1 -O2 -fwrapv -ftrapv: compares the values
1769 # GCC: (GNU) 4.2.1 (Debian 4.2.1-5)
1770 # * gcc-4.2 -O0: OK, compares the values
1771 # * gcc-4.2 -O2: assumes no overflow, warns about it
1772 # * gcc-4.2 -O0 -fno-strict-overflow: OK, compares the values
1773 # * gcc-4.2 -O2 -fno-strict-overflow: OK, compares the values
1774 # * gcc-4.2 -O0 -fwrapv: OK, compares the values
1775 # * gcc-4.2 -O2 -fwrapv: OK, compares the values
1776 # * gcc-4.2 -O0 -ftrapv: OK, calls __addvsi3
1777 # * gcc-4.2 -O2 -ftrapv: compares the values
1778 # * gcc-4.2 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
1779 # * gcc-4.2 -O2 -fwrapv -ftrapv: compares the values
1781 # Apparently, -ftrapv does not work reliably at all.
1782 for overflow_flag in -fno-strict-overflow -fwrapv; do
1783 AC_MSG_CHECKING([whether $CC accepts $overflow_flag])
1785 CFLAGS="$CFLAGS $overflow_flag"
1786 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1787 [AC_MSG_RESULT([yes])
1789 [AC_MSG_RESULT([no])])
1794 EL_LOG_CONFIG(CFLAGS, [Compiler flags (CFLAGS)], [])
1795 EL_LOG_CONFIG(CPPFLAGS, [Preprocessor flags (CPPFLAGS)], [])
1796 EL_LOG_CONFIG(LDFLAGS, [Linker flags (LDFLAGS)], [])
1797 EL_LOG_CONFIG(LIBS, [Library flags (LIBS)], [])
1799 # ===================================================================
1800 # Colored make output
1801 # ===================================================================
1803 if test $(`which tput` colors) -ge 4; then
1805 AC_SUBST(MAKE_COLOR)
1808 # ===================================================================
1810 # ===================================================================
1814 contrib/elinks.spec \
1815 contrib/lua/hooks.lua \
1816 contrib/conv/w3m2links.awk \
1818 doc/man/man1/elinks.1 \
1819 src/intl/gettext/ref-add.sed \
1820 src/intl/gettext/ref-del.sed
1824 abs_srcdir="$(cd "$srcdir" && pwd)"
1825 # builddir is always absolute!
1826 if test "$abs_srcdir" != "$builddir"; then
1827 # Bootstrap the Makefile creation
1828 echo "include $abs_srcdir/Makefile" > "$builddir/Makefile"
1829 "$MAKE" "SRC=$abs_srcdir" init
1831 # Make cg-status ignore this build directory
1832 echo "*" > "$builddir/.gitignore"
1835 # ===================================================================
1836 # Configuration summary
1837 # ===================================================================
1839 AC_MSG_RESULT(The following feature summary has been saved to features.log)