| blob | 5792425a4948148b5a110346f5b830063dd78914 |
1 # -*- Autoconf -*-
2 # Process this file with autoconf to produce a configure script.
4 AC_PREREQ(2.59)
5 AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
7 AC_CONFIG_SRCDIR([git.c])
9 config_file=config.mak.autogen
10 config_append=config.mak.append
11 config_in=config.mak.in
13 echo "# ${config_append}. Generated by configure." > "${config_append}"
16 ## Definitions of macros
17 # GIT_CONF_APPEND_LINE(LINE)
18 # --------------------------
19 # Append LINE to file ${config_append}
20 AC_DEFUN([GIT_CONF_APPEND_LINE],
21 [echo "$1" >> "${config_append}"])# GIT_CONF_APPEND_LINE
22 #
23 # GIT_ARG_SET_PATH(PROGRAM)
24 # -------------------------
25 # Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
26 # Optional second argument allows setting NO_PROGRAM=YesPlease if
27 # --without-PROGRAM version used.
28 AC_DEFUN([GIT_ARG_SET_PATH],
29 [AC_ARG_WITH([$1],
30 [AS_HELP_STRING([--with-$1=PATH],
31 [provide PATH to $1])],
32 [GIT_CONF_APPEND_PATH($1,$2)],[])
33 ])# GIT_ARG_SET_PATH
34 #
35 # GIT_CONF_APPEND_PATH(PROGRAM)
36 # ------------------------------
37 # Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
38 # Used by GIT_ARG_SET_PATH(PROGRAM)
39 # Optional second argument allows setting NO_PROGRAM=YesPlease if
40 # --without-PROGRAM is used.
41 AC_DEFUN([GIT_CONF_APPEND_PATH],
42 [PROGRAM=m4_toupper($1); \
43 if test "$withval" = "no"; then \
44 if test -n "$2"; then \
45 m4_toupper($1)_PATH=$withval; \
46 AC_MSG_NOTICE([Disabling use of ${PROGRAM}]); \
47 GIT_CONF_APPEND_LINE(NO_${PROGRAM}=YesPlease); \
48 GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=); \
49 else \
50 AC_MSG_ERROR([You cannot use git without $1]); \
51 fi; \
52 else \
53 if test "$withval" = "yes"; then \
54 AC_MSG_WARN([You should provide path for --with-$1=PATH]); \
55 else \
56 m4_toupper($1)_PATH=$withval; \
57 AC_MSG_NOTICE([Setting m4_toupper($1)_PATH to $withval]); \
58 GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval); \
59 fi; \
60 fi; \
61 ]) # GIT_CONF_APPEND_PATH
62 #
63 # GIT_PARSE_WITH(PACKAGE)
64 # -----------------------
65 # For use in AC_ARG_WITH action-if-found, for packages default ON.
66 # * Set NO_PACKAGE=YesPlease for --without-PACKAGE
67 # * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
68 # * Unset NO_PACKAGE for --with-PACKAGE without ARG
69 AC_DEFUN([GIT_PARSE_WITH],
70 [PACKAGE=m4_toupper($1); \
71 if test "$withval" = "no"; then \
72 m4_toupper(NO_$1)=YesPlease; \
73 elif test "$withval" = "yes"; then \
74 m4_toupper(NO_$1)=; \
75 else \
76 m4_toupper(NO_$1)=; \
77 m4_toupper($1)DIR=$withval; \
78 AC_MSG_NOTICE([Setting m4_toupper($1)DIR to $withval]); \
79 GIT_CONF_APPEND_LINE(${PACKAGE}DIR=$withval); \
80 fi \
81 ])# GIT_PARSE_WITH
82 #
83 # GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT)
84 # ---------------------
85 # Set VAR to the value specied by --with-WITHNAME.
86 # No verification of arguments is performed, but warnings are issued
87 # if either 'yes' or 'no' is specified.
88 # HELP_TEXT is presented when --help is called.
89 # This is a direct way to allow setting variables in the Makefile.
90 AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR],
91 [AC_ARG_WITH([$1],
92 [AS_HELP_STRING([--with-$1=VALUE], $3)],
93 if test -n "$withval"; then \
94 if test "$withval" = "yes" -o "$withval" = "no"; then \
95 AC_MSG_WARN([You likely do not want either 'yes' or 'no' as]
96 [a value for $1 ($2). Maybe you do...?]); \
97 fi; \
98 \
99 AC_MSG_NOTICE([Setting $2 to $withval]); \
100 GIT_CONF_APPEND_LINE($2=$withval); \
101 fi)])# GIT_PARSE_WITH_SET_MAKE_VAR
103 dnl
104 dnl GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
105 dnl -----------------------------------------
106 dnl Similar to AC_CHECK_FUNC, but on systems that do not generate
107 dnl warnings for missing prototypes (e.g. FreeBSD when compiling without
108 dnl -Wall), it does not work. By looking for function definition in
109 dnl libraries, this problem can be worked around.
110 AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[
111 AC_SEARCH_LIBS([$1],,
112 [$2],[$3])
113 ],[$3])])
115 dnl
116 dnl GIT_STASH_FLAGS(BASEPATH_VAR)
117 dnl -----------------------------
118 dnl Allow for easy stashing of LDFLAGS and CPPFLAGS before running
119 dnl tests that may want to take user settings into account.
120 AC_DEFUN([GIT_STASH_FLAGS],[
121 if test -n "$1"; then
122 old_CPPFLAGS="$CPPFLAGS"
123 old_LDFLAGS="$LDFLAGS"
124 CPPFLAGS="-I$1/include $CPPFLAGS"
125 LDFLAGS="-L$1/$lib $LDFLAGS"
126 fi
127 ])
129 dnl
130 dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR)
131 dnl -----------------------------
132 dnl Restore the stashed *FLAGS values.
133 AC_DEFUN([GIT_UNSTASH_FLAGS],[
134 if test -n "$1"; then
135 CPPFLAGS="$old_CPPFLAGS"
136 LDFLAGS="$old_LDFLAGS"
137 fi
138 ])
140 ## Site configuration related to programs (before tests)
141 ## --with-PACKAGE[=ARG] and --without-PACKAGE
142 #
143 # Set lib to alternative name of lib directory (e.g. lib64)
144 AC_ARG_WITH([lib],
145 [AS_HELP_STRING([--with-lib=ARG],
146 [ARG specifies alternative name for lib directory])],
147 [if test "$withval" = "no" || test "$withval" = "yes"; then \
148 AC_MSG_WARN([You should provide name for --with-lib=ARG]); \
149 else \
150 lib=$withval; \
151 AC_MSG_NOTICE([Setting lib to '$lib']); \
152 GIT_CONF_APPEND_LINE(lib=$withval); \
153 fi; \
154 ],[])
156 if test -z "$lib"; then
157 AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
158 lib=lib
159 fi
161 AC_ARG_ENABLE([pthreads],
162 [AS_HELP_STRING([--enable-pthreads=FLAGS],
163 [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
164 [The default if FLAGS is not specified is to try first -pthread]
165 [and then -lpthread.]
166 [--without-pthreads will disable threading.])],
167 [
168 if test "x$enableval" = "xyes"; then
169 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads])
170 elif test "x$enableval" != "xno"; then
171 PTHREAD_CFLAGS=$enableval
172 AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads])
173 else
174 AC_MSG_NOTICE([POSIX Threads will be disabled.])
175 NO_PTHREADS=YesPlease
176 USER_NOPTHREAD=1
177 fi],
178 [
179 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.])
180 ])
182 # Define option to enable JavaScript minification
183 AC_ARG_ENABLE([jsmin],
184 [AS_HELP_STRING([--enable-jsmin=PATH],
185 [PATH is the name of a JavaScript minifier or the absolute path to one.])],
186 [
187 JSMIN=$enableval;
188 AC_MSG_NOTICE([Setting JSMIN to '$JSMIN' to enable JavaScript minifying])
189 GIT_CONF_APPEND_LINE(JSMIN=$enableval);
190 ])
192 # Define option to enable CSS minification
193 AC_ARG_ENABLE([cssmin],
194 [AS_HELP_STRING([--enable-cssmin=PATH],
195 [PATH is the name of a CSS minifier or the absolute path to one.])],
196 [
197 CSSMIN=$enableval;
198 AC_MSG_NOTICE([Setting CSSMIN to '$CSSMIN' to enable CSS minifying])
199 GIT_CONF_APPEND_LINE(CSSMIN=$enableval);
200 ])
202 ## Site configuration (override autodetection)
203 ## --with-PACKAGE[=ARG] and --without-PACKAGE
204 AC_MSG_NOTICE([CHECKS for site configuration])
205 #
206 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
207 # tests. These tests take up a significant amount of the total test time
208 # but are not needed unless you plan to talk to SVN repos.
209 #
210 # Define PPC_SHA1 environment variable when running make to make use of
211 # a bundled SHA1 routine optimized for PowerPC.
212 #
213 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
214 # This also implies BLK_SHA1.
215 #
216 # Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
217 # /foo/bar/include and /foo/bar/lib directories.
218 AC_ARG_WITH(openssl,
219 AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
220 AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),\
221 GIT_PARSE_WITH(openssl))
222 #
223 # Define NO_CURL if you do not have curl installed. git-http-pull and
224 # git-http-push are not built, and you cannot use http:// and https://
225 # transports.
226 #
227 # Define CURLDIR=/foo/bar if your curl header and library files are in
228 # /foo/bar/include and /foo/bar/lib directories.
229 AC_ARG_WITH(curl,
230 AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
231 AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
232 GIT_PARSE_WITH(curl))
233 #
234 # Define NO_EXPAT if you do not have expat installed. git-http-push is
235 # not built, and you cannot push using http:// and https:// transports.
236 #
237 # Define EXPATDIR=/foo/bar if your expat header and library files are in
238 # /foo/bar/include and /foo/bar/lib directories.
239 AC_ARG_WITH(expat,
240 AS_HELP_STRING([--with-expat],
241 [support git-push using http:// and https:// transports via WebDAV (default is YES)])
242 AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
243 GIT_PARSE_WITH(expat))
244 #
245 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
246 # installed in /sw, but don't want GIT to link against any libraries
247 # installed there. If defined you may specify your own (or Fink's)
248 # include directories and library directories by defining CFLAGS
249 # and LDFLAGS appropriately.
250 #
251 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
252 # have DarwinPorts installed in /opt/local, but don't want GIT to
253 # link against any libraries installed there. If defined you may
254 # specify your own (or DarwinPort's) include directories and
255 # library directories by defining CFLAGS and LDFLAGS appropriately.
256 #
257 # Define NO_MMAP if you want to avoid mmap.
258 #
259 # Define NO_ICONV if your libc does not properly support iconv.
260 AC_ARG_WITH(iconv,
261 AS_HELP_STRING([--without-iconv],
262 [if your architecture doesn't properly support iconv])
263 AS_HELP_STRING([--with-iconv=PATH],
264 [PATH is prefix for libiconv library and headers])
265 AS_HELP_STRING([],
266 [used only if you need linking with libiconv]),
267 GIT_PARSE_WITH(iconv))
269 ## --enable-FEATURE[=ARG] and --disable-FEATURE
270 #
271 # Define USE_NSEC below if you want git to care about sub-second file mtimes
272 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
273 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
274 # randomly break unless your underlying filesystem supports those sub-second
275 # times (my ext3 doesn't).
276 #
277 # Define USE_STDEV below if you want git to care about the underlying device
278 # change being considered an inode change from the update-index perspective.
280 #
281 # Allow user to set ETC_GITCONFIG variable
282 GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
283 Use VALUE instead of /etc/gitconfig as the
284 global git configuration file.
285 If VALUE is not fully qualified it will be interpreted
286 as a path relative to the computed prefix at runtime.)
288 #
289 # Allow user to set ETC_GITATTRIBUTES variable
290 GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
291 Use VALUE instead of /etc/gitattributes as the
292 global git attributes file.
293 If VALUE is not fully qualified it will be interpreted
294 as a path relative to the computed prefix at runtime.)
296 #
297 # Allow user to set the default pager
298 GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
299 Use VALUE as the fall-back pager instead of 'less'.
300 This is used by things like 'git log' when the user
301 does not specify a pager to use through alternate
302 methods. eg: /usr/bin/pager)
303 #
304 # Allow user to set the default editor
305 GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
306 Use VALUE as the fall-back editor instead of 'vi'.
307 This is used by things like 'git commit' when the user
308 does not specify a preferred editor through other
309 methods. eg: /usr/bin/editor)
311 #
312 # Define SHELL_PATH to provide path to shell.
313 GIT_ARG_SET_PATH(shell)
314 #
315 # Define PERL_PATH to provide path to Perl.
316 GIT_ARG_SET_PATH(perl)
317 #
318 # Define PYTHON_PATH to provide path to Python.
319 GIT_ARG_SET_PATH(python, allow-without)
320 #
321 # Define ZLIB_PATH to provide path to zlib.
322 GIT_ARG_SET_PATH(zlib)
323 #
324 # Declare the with-tcltk/without-tcltk options.
325 AC_ARG_WITH(tcltk,
326 AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
327 AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
328 AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
329 AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),\
330 GIT_PARSE_WITH(tcltk))
331 #
334 ## Checks for programs.
335 AC_MSG_NOTICE([CHECKS for programs])
336 #
337 AC_PROG_CC([cc gcc])
338 AC_C_INLINE
339 case $ac_cv_c_inline in
340 inline | yes | no) ;;
341 *) AC_SUBST([INLINE], [$ac_cv_c_inline]) ;;
342 esac
344 # which switch to pass runtime path to dynamic libraries to the linker
345 AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
346 SAVE_LDFLAGS="${LDFLAGS}"
347 LDFLAGS="${SAVE_LDFLAGS} -R /"
348 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
349 LDFLAGS="${SAVE_LDFLAGS}"
350 ])
351 if test "$git_cv_ld_dashr" = "yes"; then
352 AC_SUBST(CC_LD_DYNPATH, [-R])
353 else
354 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
355 SAVE_LDFLAGS="${LDFLAGS}"
356 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
357 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
358 LDFLAGS="${SAVE_LDFLAGS}"
359 ])
360 if test "$git_cv_ld_wl_rpath" = "yes"; then
361 AC_SUBST(CC_LD_DYNPATH, [-Wl,-rpath,])
362 else
363 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
364 SAVE_LDFLAGS="${LDFLAGS}"
365 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
366 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
367 LDFLAGS="${SAVE_LDFLAGS}"
368 ])
369 if test "$git_cv_ld_rpath" = "yes"; then
370 AC_SUBST(CC_LD_DYNPATH, [-rpath])
371 else
372 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
373 fi
374 fi
375 fi
376 #AC_PROG_INSTALL # needs install-sh or install.sh in sources
377 AC_CHECK_TOOLS(AR, [gar ar], :)
378 AC_CHECK_PROGS(TAR, [gtar tar])
379 AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
380 # TCLTK_PATH will be set to some value if we want Tcl/Tk
381 # or will be empty otherwise.
382 if test -z "$NO_TCLTK"; then
383 if test "$with_tcltk" = ""; then
384 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
385 TCLTK_PATH=wish
386 AC_SUBST(TCLTK_PATH)
387 elif test "$with_tcltk" = "yes"; then
388 # Tcl/Tk check requested.
389 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
390 else
391 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
392 TCLTK_PATH="$with_tcltk"
393 AC_SUBST(TCLTK_PATH)
394 fi
395 fi
396 AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
397 if test -n "$ASCIIDOC"; then
398 AC_MSG_CHECKING([for asciidoc version])
399 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
400 case "${asciidoc_version}" in
401 asciidoc' '7*)
402 ASCIIDOC7=YesPlease
403 AC_MSG_RESULT([${asciidoc_version} > 7])
404 ;;
405 asciidoc' '8*)
406 ASCIIDOC7=
407 AC_MSG_RESULT([${asciidoc_version}])
408 ;;
409 *)
410 ASCIIDOC7=
411 AC_MSG_RESULT([${asciidoc_version} (unknown)])
412 ;;
413 esac
414 fi
415 AC_SUBST(ASCIIDOC7)
418 ## Checks for libraries.
419 AC_MSG_NOTICE([CHECKS for libraries])
420 #
421 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
422 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
424 GIT_STASH_FLAGS($OPENSSLDIR)
426 AC_CHECK_LIB([crypto], [SHA1_Init],
427 [NEEDS_SSL_WITH_CRYPTO=],
428 [AC_CHECK_LIB([ssl], [SHA1_Init],
429 [NEEDS_SSL_WITH_CRYPTO=YesPlease],
430 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
432 GIT_UNSTASH_FLAGS($OPENSSLDIR)
434 AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
435 AC_SUBST(NO_OPENSSL)
437 #
438 # Define NO_CURL if you do not have libcurl installed. git-http-pull and
439 # git-http-push are not built, and you cannot use http:// and https://
440 # transports.
442 GIT_STASH_FLAGS($CURLDIR)
444 AC_CHECK_LIB([curl], [curl_global_init],
445 [NO_CURL=],
446 [NO_CURL=YesPlease])
448 GIT_UNSTASH_FLAGS($CURLDIR)
450 AC_SUBST(NO_CURL)
452 #
453 # Define NO_EXPAT if you do not have expat installed. git-http-push is
454 # not built, and you cannot push using http:// and https:// transports.
456 GIT_STASH_FLAGS($EXPATDIR)
458 AC_CHECK_LIB([expat], [XML_ParserCreate],
459 [NO_EXPAT=],
460 [NO_EXPAT=YesPlease])
462 GIT_UNSTASH_FLAGS($EXPATDIR)
464 AC_SUBST(NO_EXPAT)
466 #
467 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
468 # some Solaris installations).
469 # Define NO_ICONV if neither libc nor libiconv support iconv.
471 if test -z "$NO_ICONV"; then
473 GIT_STASH_FLAGS($ICONVDIR)
475 AC_DEFUN([ICONVTEST_SRC], [
476 #include <iconv.h>
478 int main(void)
479 {
480 iconv_open("", "");
481 return 0;
482 }
483 ])
485 if test -n "$ICONVDIR"; then
486 lib_order="-liconv -lc"
487 else
488 lib_order="-lc -liconv"
489 fi
491 NO_ICONV=YesPlease
493 for l in $lib_order; do
494 if test "$l" = "-liconv"; then
495 NEEDS_LIBICONV=YesPlease
496 else
497 NEEDS_LIBICONV=
498 fi
500 old_LIBS="$LIBS"
501 LIBS="$LIBS $l"
502 AC_MSG_CHECKING([for iconv in $l])
503 AC_LINK_IFELSE(ICONVTEST_SRC,
504 [AC_MSG_RESULT([yes])
505 NO_ICONV=
506 break],
507 [AC_MSG_RESULT([no])])
508 LIBS="$old_LIBS"
509 done
511 #in case of break
512 LIBS="$old_LIBS"
514 GIT_UNSTASH_FLAGS($ICONVDIR)
516 AC_SUBST(NEEDS_LIBICONV)
517 AC_SUBST(NO_ICONV)
519 if test -n "$NO_ICONV"; then
520 NEEDS_LIBICONV=
521 fi
523 fi
525 #
526 # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
528 GIT_STASH_FLAGS($ZLIB_PATH)
530 AC_DEFUN([ZLIBTEST_SRC], [
531 #include <zlib.h>
533 int main(void)
534 {
535 deflateBound(0, 0);
536 return 0;
537 }
538 ])
539 AC_MSG_CHECKING([for deflateBound in -lz])
540 old_LIBS="$LIBS"
541 LIBS="$LIBS -lz"
542 AC_LINK_IFELSE(ZLIBTEST_SRC,
543 [AC_MSG_RESULT([yes])],
544 [AC_MSG_RESULT([no])
545 NO_DEFLATE_BOUND=yes])
546 LIBS="$old_LIBS"
548 GIT_UNSTASH_FLAGS($ZLIB_PATH)
550 AC_SUBST(NO_DEFLATE_BOUND)
552 #
553 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
554 # Patrick Mauritz).
555 AC_CHECK_LIB([c], [socket],
556 [NEEDS_SOCKET=],
557 [NEEDS_SOCKET=YesPlease])
558 AC_SUBST(NEEDS_SOCKET)
559 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
561 #
562 # The next few tests will define NEEDS_RESOLV if linking with
563 # libresolv provides some of the functions we would normally get
564 # from libc.
565 NEEDS_RESOLV=
566 AC_SUBST(NEEDS_RESOLV)
567 #
568 # Define NO_INET_NTOP if linking with -lresolv is not enough.
569 # Solaris 2.7 in particular hos inet_ntop in -lresolv.
570 NO_INET_NTOP=
571 AC_SUBST(NO_INET_NTOP)
572 AC_CHECK_FUNC([inet_ntop],
573 [],
574 [AC_CHECK_LIB([resolv], [inet_ntop],
575 [NEEDS_RESOLV=YesPlease],
576 [NO_INET_NTOP=YesPlease])
577 ])
578 #
579 # Define NO_INET_PTON if linking with -lresolv is not enough.
580 # Solaris 2.7 in particular hos inet_pton in -lresolv.
581 NO_INET_PTON=
582 AC_SUBST(NO_INET_PTON)
583 AC_CHECK_FUNC([inet_pton],
584 [],
585 [AC_CHECK_LIB([resolv], [inet_pton],
586 [NEEDS_RESOLV=YesPlease],
587 [NO_INET_PTON=YesPlease])
588 ])
589 #
590 # Define NO_HSTRERROR if linking with -lresolv is not enough.
591 # Solaris 2.6 in particular has no hstrerror, even in -lresolv.
592 NO_HSTRERROR=
593 AC_CHECK_FUNC([hstrerror],
594 [],
595 [AC_CHECK_LIB([resolv], [hstrerror],
596 [NEEDS_RESOLV=YesPlease],
597 [NO_HSTRERROR=YesPlease])
598 ])
599 AC_SUBST(NO_HSTRERROR)
600 #
601 # If any of the above tests determined that -lresolv is needed at
602 # build-time, also set it here for remaining configure-time checks.
603 test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
605 AC_CHECK_LIB([c], [basename],
606 [NEEDS_LIBGEN=],
607 [NEEDS_LIBGEN=YesPlease])
608 AC_SUBST(NEEDS_LIBGEN)
609 test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
611 ## Checks for header files.
612 AC_MSG_NOTICE([CHECKS for header files])
613 #
614 # Define NO_SYS_SELECT_H if you don't have sys/select.h.
615 AC_CHECK_HEADER([sys/select.h],
616 [NO_SYS_SELECT_H=],
617 [NO_SYS_SELECT_H=UnfortunatelyYes])
618 AC_SUBST(NO_SYS_SELECT_H)
619 #
620 # Define NO_SYS_POLL_H if you don't have sys/poll.h
621 AC_CHECK_HEADER([sys/poll.h],
622 [NO_SYS_POLL_H=],
623 [NO_SYS_POLL_H=UnfortunatelyYes])
624 AC_SUBST(NO_SYS_POLL_H)
625 #
626 # Define NO_INTTYPES_H if you don't have inttypes.h
627 AC_CHECK_HEADER([inttypes.h],
628 [NO_INTTYPES_H=],
629 [NO_INTTYPES_H=UnfortunatelyYes])
630 AC_SUBST(NO_INTTYPES_H)
631 #
632 # Define OLD_ICONV if your library has an old iconv(), where the second
633 # (input buffer pointer) parameter is declared with type (const char **).
634 AC_DEFUN([OLDICONVTEST_SRC], [[
635 #include <iconv.h>
637 extern size_t iconv(iconv_t cd,
638 char **inbuf, size_t *inbytesleft,
639 char **outbuf, size_t *outbytesleft);
641 int main(void)
642 {
643 return 0;
644 }
645 ]])
647 GIT_STASH_FLAGS($ICONVDIR)
649 AC_MSG_CHECKING([for old iconv()])
650 AC_COMPILE_IFELSE(OLDICONVTEST_SRC,
651 [AC_MSG_RESULT([no])],
652 [AC_MSG_RESULT([yes])
653 OLD_ICONV=UnfortunatelyYes])
655 GIT_UNSTASH_FLAGS($ICONVDIR)
657 AC_SUBST(OLD_ICONV)
659 ## Checks for typedefs, structures, and compiler characteristics.
660 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
661 #
662 TYPE_SOCKLEN_T
663 case $ac_cv_type_socklen_t in
664 yes) ;;
665 *) AC_SUBST([SOCKLEN_T], [$git_cv_socklen_t_equiv]) ;;
666 esac
668 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
669 AC_CHECK_MEMBER(struct dirent.d_ino,
670 [NO_D_INO_IN_DIRENT=],
671 [NO_D_INO_IN_DIRENT=YesPlease],
672 [#include <dirent.h>])
673 AC_SUBST(NO_D_INO_IN_DIRENT)
674 #
675 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
676 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
677 AC_CHECK_MEMBER(struct dirent.d_type,
678 [NO_D_TYPE_IN_DIRENT=],
679 [NO_D_TYPE_IN_DIRENT=YesPlease],
680 [#include <dirent.h>])
681 AC_SUBST(NO_D_TYPE_IN_DIRENT)
682 #
683 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
684 # sockaddr_storage.
685 AC_CHECK_TYPE(struct sockaddr_storage,
686 [NO_SOCKADDR_STORAGE=],
687 [NO_SOCKADDR_STORAGE=YesPlease],[
688 #include <sys/types.h>
689 #include <sys/socket.h>
690 ])
691 AC_SUBST(NO_SOCKADDR_STORAGE)
692 #
693 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
694 AC_CHECK_TYPE([struct addrinfo],[
695 GIT_CHECK_FUNC([getaddrinfo],
696 [NO_IPV6=],
697 [NO_IPV6=YesPlease])
698 ],[NO_IPV6=YesPlease],[
699 #include <sys/types.h>
700 #include <sys/socket.h>
701 #include <netdb.h>
702 ])
703 AC_SUBST(NO_IPV6)
704 #
705 # Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
706 # do not support the 'size specifiers' introduced by C99, namely ll, hh,
707 # j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
708 # some C compilers supported these specifiers prior to C99 as an extension.
709 AC_CACHE_CHECK([whether formatted IO functions support C99 size specifiers],
710 [ac_cv_c_c99_format],
711 [# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
712 AC_RUN_IFELSE(
713 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
714 [[char buf[64];
715 if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
716 return 1;
717 else if (strcmp(buf, "12345"))
718 return 2;]])],
719 [ac_cv_c_c99_format=yes],
720 [ac_cv_c_c99_format=no])
721 ])
722 if test $ac_cv_c_c99_format = no; then
723 NO_C99_FORMAT=YesPlease
724 else
725 NO_C99_FORMAT=
726 fi
727 AC_SUBST(NO_C99_FORMAT)
728 #
729 # Define NO_REGEX if you have no or inferior regex support in your C library.
730 AC_CACHE_CHECK([whether the platform regex can handle null bytes],
731 [ac_cv_c_excellent_regex], [
732 AC_EGREP_CPP(yippeeyeswehaveit,
733 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
734 #include <regex.h>
735 ],
736 [#ifdef REG_STARTEND
737 yippeeyeswehaveit
738 #endif
739 ]),
740 [ac_cv_c_excellent_regex=yes],
741 [ac_cv_c_excellent_regex=no])
742 ])
743 if test $ac_cv_c_excellent_regex = yes; then
744 NO_REGEX=
745 else
746 NO_REGEX=YesPlease
747 fi
748 AC_SUBST(NO_REGEX)
749 #
750 # Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
751 # when attempting to read from an fopen'ed directory.
752 AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
753 [ac_cv_fread_reads_directories],
754 [
755 AC_RUN_IFELSE(
756 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
757 [[char c;
758 FILE *f = fopen(".", "r");
759 return f && fread(&c, 1, 1, f)]])],
760 [ac_cv_fread_reads_directories=no],
761 [ac_cv_fread_reads_directories=yes])
762 ])
763 if test $ac_cv_fread_reads_directories = yes; then
764 FREAD_READS_DIRECTORIES=UnfortunatelyYes
765 else
766 FREAD_READS_DIRECTORIES=
767 fi
768 AC_SUBST(FREAD_READS_DIRECTORIES)
769 #
770 # Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
771 # or vsnprintf() return -1 instead of number of characters which would
772 # have been written to the final string if enough space had been available.
773 AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
774 [ac_cv_snprintf_returns_bogus],
775 [
776 AC_RUN_IFELSE(
777 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
778 #include "stdarg.h"
780 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
781 {
782 int ret;
783 va_list ap;
784 va_start(ap, format);
785 ret = vsnprintf(str, maxsize, format, ap);
786 va_end(ap);
787 return ret;
788 }],
789 [[char buf[6];
790 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
791 || strcmp(buf, "12")) return 1;
792 if (snprintf(buf, 3, "%s", "12345") != 5
793 || strcmp(buf, "12")) return 1]])],
794 [ac_cv_snprintf_returns_bogus=no],
795 [ac_cv_snprintf_returns_bogus=yes])
796 ])
797 if test $ac_cv_snprintf_returns_bogus = yes; then
798 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
799 else
800 SNPRINTF_RETURNS_BOGUS=
801 fi
802 AC_SUBST(SNPRINTF_RETURNS_BOGUS)
805 ## Checks for library functions.
806 ## (in default C library and libraries checked by AC_CHECK_LIB)
807 AC_MSG_NOTICE([CHECKS for library functions])
808 #
809 # Define NO_LIBGEN_H if you don't have libgen.h.
810 AC_CHECK_HEADER([libgen.h],
811 [NO_LIBGEN_H=],
812 [NO_LIBGEN_H=YesPlease])
813 AC_SUBST(NO_LIBGEN_H)
814 #
815 # Define HAVE_PATHS_H if you have paths.h.
816 AC_CHECK_HEADER([paths.h],
817 [HAVE_PATHS_H=YesPlease],
818 [HAVE_PATHS_H=])
819 AC_SUBST(HAVE_PATHS_H)
820 #
821 # Define NO_STRCASESTR if you don't have strcasestr.
822 GIT_CHECK_FUNC(strcasestr,
823 [NO_STRCASESTR=],
824 [NO_STRCASESTR=YesPlease])
825 AC_SUBST(NO_STRCASESTR)
826 #
827 # Define NO_STRTOK_R if you don't have strtok_r
828 GIT_CHECK_FUNC(strtok_r,
829 [NO_STRTOK_R=],
830 [NO_STRTOK_R=YesPlease])
831 AC_SUBST(NO_STRTOK_R)
832 #
833 # Define NO_FNMATCH if you don't have fnmatch
834 GIT_CHECK_FUNC(fnmatch,
835 [NO_FNMATCH=],
836 [NO_FNMATCH=YesPlease])
837 AC_SUBST(NO_FNMATCH)
838 #
839 # Define NO_FNMATCH_CASEFOLD if your fnmatch function doesn't have the
840 # FNM_CASEFOLD GNU extension.
841 AC_CACHE_CHECK([whether the fnmatch function supports the FNMATCH_CASEFOLD GNU extension],
842 [ac_cv_c_excellent_fnmatch], [
843 AC_EGREP_CPP(yippeeyeswehaveit,
844 AC_LANG_PROGRAM([
845 #include <fnmatch.h>
846 ],
847 [#ifdef FNM_CASEFOLD
848 yippeeyeswehaveit
849 #endif
850 ]),
851 [ac_cv_c_excellent_fnmatch=yes],
852 [ac_cv_c_excellent_fnmatch=no])
853 ])
854 if test $ac_cv_c_excellent_fnmatch = yes; then
855 NO_FNMATCH_CASEFOLD=
856 else
857 NO_FNMATCH_CASEFOLD=YesPlease
858 fi
859 AC_SUBST(NO_FNMATCH_CASEFOLD)
860 #
861 # Define NO_MEMMEM if you don't have memmem.
862 GIT_CHECK_FUNC(memmem,
863 [NO_MEMMEM=],
864 [NO_MEMMEM=YesPlease])
865 AC_SUBST(NO_MEMMEM)
866 #
867 # Define NO_STRLCPY if you don't have strlcpy.
868 GIT_CHECK_FUNC(strlcpy,
869 [NO_STRLCPY=],
870 [NO_STRLCPY=YesPlease])
871 AC_SUBST(NO_STRLCPY)
872 #
873 # Define NO_UINTMAX_T if your platform does not have uintmax_t
874 AC_CHECK_TYPE(uintmax_t,
875 [NO_UINTMAX_T=],
876 [NO_UINTMAX_T=YesPlease],[
877 #include <inttypes.h>
878 ])
879 AC_SUBST(NO_UINTMAX_T)
880 #
881 # Define NO_STRTOUMAX if you don't have strtoumax in the C library.
882 GIT_CHECK_FUNC(strtoumax,
883 [NO_STRTOUMAX=],
884 [NO_STRTOUMAX=YesPlease])
885 AC_SUBST(NO_STRTOUMAX)
886 #
887 # Define NO_SETENV if you don't have setenv in the C library.
888 GIT_CHECK_FUNC(setenv,
889 [NO_SETENV=],
890 [NO_SETENV=YesPlease])
891 AC_SUBST(NO_SETENV)
892 #
893 # Define NO_UNSETENV if you don't have unsetenv in the C library.
894 GIT_CHECK_FUNC(unsetenv,
895 [NO_UNSETENV=],
896 [NO_UNSETENV=YesPlease])
897 AC_SUBST(NO_UNSETENV)
898 #
899 # Define NO_MKDTEMP if you don't have mkdtemp in the C library.
900 GIT_CHECK_FUNC(mkdtemp,
901 [NO_MKDTEMP=],
902 [NO_MKDTEMP=YesPlease])
903 AC_SUBST(NO_MKDTEMP)
904 #
905 # Define NO_MKSTEMPS if you don't have mkstemps in the C library.
906 GIT_CHECK_FUNC(mkstemps,
907 [NO_MKSTEMPS=],
908 [NO_MKSTEMPS=YesPlease])
909 AC_SUBST(NO_MKSTEMPS)
910 #
911 # Define NO_INITGROUPS if you don't have initgroups in the C library.
912 GIT_CHECK_FUNC(initgroups,
913 [NO_INITGROUPS=],
914 [NO_INITGROUPS=YesPlease])
915 AC_SUBST(NO_INITGROUPS)
916 #
917 #
918 # Define NO_MMAP if you want to avoid mmap.
919 #
920 # Define NO_ICONV if your libc does not properly support iconv.
923 ## Other checks.
924 # Define USE_PIC if you need the main git objects to be built with -fPIC
925 # in order to build and link perl/Git.so. x86-64 seems to need this.
926 #
927 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
928 # Enable it on Windows. By default, symrefs are still used.
929 #
930 # Define NO_PTHREADS if we do not have pthreads.
931 #
932 # Define PTHREAD_LIBS to the linker flag used for Pthread support.
933 AC_DEFUN([PTHREADTEST_SRC], [
934 #include <pthread.h>
936 int main(void)
937 {
938 pthread_mutex_t test_mutex;
939 int retcode = 0;
940 retcode |= pthread_mutex_init(&test_mutex,(void *)0);
941 retcode |= pthread_mutex_lock(&test_mutex);
942 retcode |= pthread_mutex_unlock(&test_mutex);
943 return retcode;
944 }
945 ])
947 dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
948 dnl [[#include <pthread.h>]],
949 dnl [[pthread_mutex_t test_mutex;]]
950 dnl )])
952 NO_PTHREADS=UnfortunatelyYes
953 PTHREAD_LIBS=
955 if test -n "$USER_NOPTHREAD"; then
956 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
957 # handle these separately since PTHREAD_CFLAGS could be '-lpthreads
958 # -D_REENTRANT' or some such.
959 elif test -z "$PTHREAD_CFLAGS"; then
960 threads_found=no
961 for opt in -mt -pthread -lpthread; do
962 old_CFLAGS="$CFLAGS"
963 CFLAGS="$opt $CFLAGS"
964 AC_MSG_CHECKING([Checking for POSIX Threads with '$opt'])
965 AC_LINK_IFELSE(PTHREADTEST_SRC,
966 [AC_MSG_RESULT([yes])
967 NO_PTHREADS=
968 PTHREAD_LIBS="$opt"
969 PTHREAD_CFLAGS="$opt"
970 threads_found=yes
971 break
972 ],
973 [AC_MSG_RESULT([no])])
974 CFLAGS="$old_CFLAGS"
975 done
976 if test $threads_found != yes; then
977 AC_CHECK_LIB([pthread], [pthread_create],
978 [PTHREAD_LIBS="-lpthread"],
979 [NO_PTHREADS=UnfortunatelyYes])
980 fi
981 else
982 old_CFLAGS="$CFLAGS"
983 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
984 AC_MSG_CHECKING([Checking for POSIX Threads with '$PTHREAD_CFLAGS'])
985 AC_LINK_IFELSE(PTHREADTEST_SRC,
986 [AC_MSG_RESULT([yes])
987 NO_PTHREADS=
988 PTHREAD_LIBS="$PTHREAD_CFLAGS"
989 ],
990 [AC_MSG_RESULT([no])])
992 CFLAGS="$old_CFLAGS"
993 fi
995 CFLAGS="$old_CFLAGS"
997 AC_SUBST(PTHREAD_CFLAGS)
998 AC_SUBST(PTHREAD_LIBS)
999 AC_SUBST(NO_PTHREADS)
1001 ## Output files
1002 AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
1003 AC_OUTPUT
1006 ## Cleanup
1007 rm -f "${config_append}"