| blob | 708e7b86ce2a55dffc162025c7a009a88b0d8c38 |
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 interpretted
286 as a path relative to the computed prefix at runtime.)
288 #
289 # Allow user to set the default pager
290 GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
291 Use VALUE as the fall-back pager instead of 'less'.
292 This is used by things like 'git log' when the user
293 does not specify a pager to use through alternate
294 methods. eg: /usr/bin/pager)
295 #
296 # Allow user to set the default editor
297 GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
298 Use VALUE as the fall-back editor instead of 'vi'.
299 This is used by things like 'git commit' when the user
300 does not specify a preferred editor through other
301 methods. eg: /usr/bin/editor)
303 #
304 # Define SHELL_PATH to provide path to shell.
305 GIT_ARG_SET_PATH(shell)
306 #
307 # Define PERL_PATH to provide path to Perl.
308 GIT_ARG_SET_PATH(perl)
309 #
310 # Define PYTHON_PATH to provide path to Python.
311 GIT_ARG_SET_PATH(python, allow-without)
312 #
313 # Define ZLIB_PATH to provide path to zlib.
314 GIT_ARG_SET_PATH(zlib)
315 #
316 # Declare the with-tcltk/without-tcltk options.
317 AC_ARG_WITH(tcltk,
318 AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
319 AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
320 AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
321 AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),\
322 GIT_PARSE_WITH(tcltk))
323 #
326 ## Checks for programs.
327 AC_MSG_NOTICE([CHECKS for programs])
328 #
329 AC_PROG_CC([cc gcc])
330 AC_C_INLINE
331 case $ac_cv_c_inline in
332 inline | yes | no) ;;
333 *) AC_SUBST([INLINE], [$ac_cv_c_inline]) ;;
334 esac
336 # which switch to pass runtime path to dynamic libraries to the linker
337 AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
338 SAVE_LDFLAGS="${LDFLAGS}"
339 LDFLAGS="${SAVE_LDFLAGS} -R /"
340 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
341 LDFLAGS="${SAVE_LDFLAGS}"
342 ])
343 if test "$git_cv_ld_dashr" = "yes"; then
344 AC_SUBST(CC_LD_DYNPATH, [-R])
345 else
346 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
347 SAVE_LDFLAGS="${LDFLAGS}"
348 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
349 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
350 LDFLAGS="${SAVE_LDFLAGS}"
351 ])
352 if test "$git_cv_ld_wl_rpath" = "yes"; then
353 AC_SUBST(CC_LD_DYNPATH, [-Wl,-rpath,])
354 else
355 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
356 SAVE_LDFLAGS="${LDFLAGS}"
357 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
358 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
359 LDFLAGS="${SAVE_LDFLAGS}"
360 ])
361 if test "$git_cv_ld_rpath" = "yes"; then
362 AC_SUBST(CC_LD_DYNPATH, [-rpath])
363 else
364 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
365 fi
366 fi
367 fi
368 #AC_PROG_INSTALL # needs install-sh or install.sh in sources
369 AC_CHECK_TOOLS(AR, [gar ar], :)
370 AC_CHECK_PROGS(TAR, [gtar tar])
371 AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
372 # TCLTK_PATH will be set to some value if we want Tcl/Tk
373 # or will be empty otherwise.
374 if test -z "$NO_TCLTK"; then
375 if test "$with_tcltk" = ""; then
376 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
377 TCLTK_PATH=wish
378 AC_SUBST(TCLTK_PATH)
379 elif test "$with_tcltk" = "yes"; then
380 # Tcl/Tk check requested.
381 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
382 else
383 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
384 TCLTK_PATH="$with_tcltk"
385 AC_SUBST(TCLTK_PATH)
386 fi
387 fi
388 AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
389 if test -n "$ASCIIDOC"; then
390 AC_MSG_CHECKING([for asciidoc version])
391 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
392 case "${asciidoc_version}" in
393 asciidoc' '8*)
394 ASCIIDOC8=YesPlease
395 AC_MSG_RESULT([${asciidoc_version} > 7])
396 ;;
397 asciidoc' '7*)
398 ASCIIDOC8=
399 AC_MSG_RESULT([${asciidoc_version}])
400 ;;
401 *)
402 ASCIIDOC8=
403 AC_MSG_RESULT([${asciidoc_version} (unknown)])
404 ;;
405 esac
406 fi
407 AC_SUBST(ASCIIDOC8)
410 ## Checks for libraries.
411 AC_MSG_NOTICE([CHECKS for libraries])
412 #
413 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
414 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
416 GIT_STASH_FLAGS($OPENSSLDIR)
418 AC_CHECK_LIB([crypto], [SHA1_Init],
419 [NEEDS_SSL_WITH_CRYPTO=],
420 [AC_CHECK_LIB([ssl], [SHA1_Init],
421 [NEEDS_SSL_WITH_CRYPTO=YesPlease],
422 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
424 GIT_UNSTASH_FLAGS($OPENSSLDIR)
426 AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
427 AC_SUBST(NO_OPENSSL)
429 #
430 # Define NO_CURL if you do not have libcurl installed. git-http-pull and
431 # git-http-push are not built, and you cannot use http:// and https://
432 # transports.
434 GIT_STASH_FLAGS($CURLDIR)
436 AC_CHECK_LIB([curl], [curl_global_init],
437 [NO_CURL=],
438 [NO_CURL=YesPlease])
440 GIT_UNSTASH_FLAGS($CURLDIR)
442 AC_SUBST(NO_CURL)
444 #
445 # Define NO_EXPAT if you do not have expat installed. git-http-push is
446 # not built, and you cannot push using http:// and https:// transports.
448 GIT_STASH_FLAGS($EXPATDIR)
450 AC_CHECK_LIB([expat], [XML_ParserCreate],
451 [NO_EXPAT=],
452 [NO_EXPAT=YesPlease])
454 GIT_UNSTASH_FLAGS($EXPATDIR)
456 AC_SUBST(NO_EXPAT)
458 #
459 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
460 # some Solaris installations).
461 # Define NO_ICONV if neither libc nor libiconv support iconv.
463 if test -z "$NO_ICONV"; then
465 GIT_STASH_FLAGS($ICONVDIR)
467 AC_DEFUN([ICONVTEST_SRC], [
468 #include <iconv.h>
470 int main(void)
471 {
472 iconv_open("", "");
473 return 0;
474 }
475 ])
477 if test -n "$ICONVDIR"; then
478 lib_order="-liconv -lc"
479 else
480 lib_order="-lc -liconv"
481 fi
483 NO_ICONV=YesPlease
485 for l in $lib_order; do
486 if test "$l" = "-liconv"; then
487 NEEDS_LIBICONV=YesPlease
488 else
489 NEEDS_LIBICONV=
490 fi
492 old_LIBS="$LIBS"
493 LIBS="$LIBS $l"
494 AC_MSG_CHECKING([for iconv in $l])
495 AC_LINK_IFELSE(ICONVTEST_SRC,
496 [AC_MSG_RESULT([yes])
497 NO_ICONV=
498 break],
499 [AC_MSG_RESULT([no])])
500 LIBS="$old_LIBS"
501 done
503 #in case of break
504 LIBS="$old_LIBS"
506 GIT_UNSTASH_FLAGS($ICONVDIR)
508 AC_SUBST(NEEDS_LIBICONV)
509 AC_SUBST(NO_ICONV)
511 if test -n "$NO_ICONV"; then
512 NEEDS_LIBICONV=
513 fi
515 fi
517 #
518 # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
520 GIT_STASH_FLAGS($ZLIB_PATH)
522 AC_DEFUN([ZLIBTEST_SRC], [
523 #include <zlib.h>
525 int main(void)
526 {
527 deflateBound(0, 0);
528 return 0;
529 }
530 ])
531 AC_MSG_CHECKING([for deflateBound in -lz])
532 old_LIBS="$LIBS"
533 LIBS="$LIBS -lz"
534 AC_LINK_IFELSE(ZLIBTEST_SRC,
535 [AC_MSG_RESULT([yes])],
536 [AC_MSG_RESULT([no])
537 NO_DEFLATE_BOUND=yes])
538 LIBS="$old_LIBS"
540 GIT_UNSTASH_FLAGS($ZLIB_PATH)
542 AC_SUBST(NO_DEFLATE_BOUND)
544 #
545 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
546 # Patrick Mauritz).
547 AC_CHECK_LIB([c], [socket],
548 [NEEDS_SOCKET=],
549 [NEEDS_SOCKET=YesPlease])
550 AC_SUBST(NEEDS_SOCKET)
551 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
553 #
554 # The next few tests will define NEEDS_RESOLV if linking with
555 # libresolv provides some of the functions we would normally get
556 # from libc.
557 NEEDS_RESOLV=
558 AC_SUBST(NEEDS_RESOLV)
559 #
560 # Define NO_INET_NTOP if linking with -lresolv is not enough.
561 # Solaris 2.7 in particular hos inet_ntop in -lresolv.
562 NO_INET_NTOP=
563 AC_SUBST(NO_INET_NTOP)
564 AC_CHECK_FUNC([inet_ntop],
565 [],
566 [AC_CHECK_LIB([resolv], [inet_ntop],
567 [NEEDS_RESOLV=YesPlease],
568 [NO_INET_NTOP=YesPlease])
569 ])
570 #
571 # Define NO_INET_PTON if linking with -lresolv is not enough.
572 # Solaris 2.7 in particular hos inet_pton in -lresolv.
573 NO_INET_PTON=
574 AC_SUBST(NO_INET_PTON)
575 AC_CHECK_FUNC([inet_pton],
576 [],
577 [AC_CHECK_LIB([resolv], [inet_pton],
578 [NEEDS_RESOLV=YesPlease],
579 [NO_INET_PTON=YesPlease])
580 ])
581 #
582 # Define NO_HSTRERROR if linking with -lresolv is not enough.
583 # Solaris 2.6 in particular has no hstrerror, even in -lresolv.
584 NO_HSTRERROR=
585 AC_CHECK_FUNC([hstrerror],
586 [],
587 [AC_CHECK_LIB([resolv], [hstrerror],
588 [NEEDS_RESOLV=YesPlease],
589 [NO_HSTRERROR=YesPlease])
590 ])
591 AC_SUBST(NO_HSTRERROR)
592 #
593 # If any of the above tests determined that -lresolv is needed at
594 # build-time, also set it here for remaining configure-time checks.
595 test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
597 AC_CHECK_LIB([c], [basename],
598 [NEEDS_LIBGEN=],
599 [NEEDS_LIBGEN=YesPlease])
600 AC_SUBST(NEEDS_LIBGEN)
601 test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
603 ## Checks for header files.
604 AC_MSG_NOTICE([CHECKS for header files])
605 #
606 # Define NO_SYS_SELECT_H if you don't have sys/select.h.
607 AC_CHECK_HEADER([sys/select.h],
608 [NO_SYS_SELECT_H=],
609 [NO_SYS_SELECT_H=UnfortunatelyYes])
610 AC_SUBST(NO_SYS_SELECT_H)
611 #
612 # Define OLD_ICONV if your library has an old iconv(), where the second
613 # (input buffer pointer) parameter is declared with type (const char **).
614 AC_DEFUN([OLDICONVTEST_SRC], [[
615 #include <iconv.h>
617 extern size_t iconv(iconv_t cd,
618 char **inbuf, size_t *inbytesleft,
619 char **outbuf, size_t *outbytesleft);
621 int main(void)
622 {
623 return 0;
624 }
625 ]])
627 GIT_STASH_FLAGS($ICONVDIR)
629 AC_MSG_CHECKING([for old iconv()])
630 AC_COMPILE_IFELSE(OLDICONVTEST_SRC,
631 [AC_MSG_RESULT([no])],
632 [AC_MSG_RESULT([yes])
633 OLD_ICONV=UnfortunatelyYes])
635 GIT_UNSTASH_FLAGS($ICONVDIR)
637 AC_SUBST(OLD_ICONV)
639 ## Checks for typedefs, structures, and compiler characteristics.
640 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
641 #
642 TYPE_SOCKLEN_T
643 case $ac_cv_type_socklen_t in
644 yes) ;;
645 *) AC_SUBST([SOCKLEN_T], [$git_cv_socklen_t_equiv]) ;;
646 esac
648 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
649 AC_CHECK_MEMBER(struct dirent.d_ino,
650 [NO_D_INO_IN_DIRENT=],
651 [NO_D_INO_IN_DIRENT=YesPlease],
652 [#include <dirent.h>])
653 AC_SUBST(NO_D_INO_IN_DIRENT)
654 #
655 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
656 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
657 AC_CHECK_MEMBER(struct dirent.d_type,
658 [NO_D_TYPE_IN_DIRENT=],
659 [NO_D_TYPE_IN_DIRENT=YesPlease],
660 [#include <dirent.h>])
661 AC_SUBST(NO_D_TYPE_IN_DIRENT)
662 #
663 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
664 # sockaddr_storage.
665 AC_CHECK_TYPE(struct sockaddr_storage,
666 [NO_SOCKADDR_STORAGE=],
667 [NO_SOCKADDR_STORAGE=YesPlease],[
668 #include <sys/types.h>
669 #include <sys/socket.h>
670 ])
671 AC_SUBST(NO_SOCKADDR_STORAGE)
672 #
673 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
674 AC_CHECK_TYPE([struct addrinfo],[
675 GIT_CHECK_FUNC([getaddrinfo],
676 [NO_IPV6=],
677 [NO_IPV6=YesPlease])
678 ],[NO_IPV6=YesPlease],[
679 #include <sys/types.h>
680 #include <sys/socket.h>
681 #include <netdb.h>
682 ])
683 AC_SUBST(NO_IPV6)
684 #
685 # Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
686 # do not support the 'size specifiers' introduced by C99, namely ll, hh,
687 # j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
688 # some C compilers supported these specifiers prior to C99 as an extension.
689 AC_CACHE_CHECK([whether formatted IO functions support C99 size specifiers],
690 [ac_cv_c_c99_format],
691 [# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
692 AC_RUN_IFELSE(
693 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
694 [[char buf[64];
695 if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
696 return 1;
697 else if (strcmp(buf, "12345"))
698 return 2;]])],
699 [ac_cv_c_c99_format=yes],
700 [ac_cv_c_c99_format=no])
701 ])
702 if test $ac_cv_c_c99_format = no; then
703 NO_C99_FORMAT=YesPlease
704 else
705 NO_C99_FORMAT=
706 fi
707 AC_SUBST(NO_C99_FORMAT)
708 #
709 # Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
710 # when attempting to read from an fopen'ed directory.
711 AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
712 [ac_cv_fread_reads_directories],
713 [
714 AC_RUN_IFELSE(
715 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
716 [[char c;
717 FILE *f = fopen(".", "r");
718 return f && fread(&c, 1, 1, f)]])],
719 [ac_cv_fread_reads_directories=no],
720 [ac_cv_fread_reads_directories=yes])
721 ])
722 if test $ac_cv_fread_reads_directories = yes; then
723 FREAD_READS_DIRECTORIES=UnfortunatelyYes
724 else
725 FREAD_READS_DIRECTORIES=
726 fi
727 AC_SUBST(FREAD_READS_DIRECTORIES)
728 #
729 # Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
730 # or vsnprintf() return -1 instead of number of characters which would
731 # have been written to the final string if enough space had been available.
732 AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
733 [ac_cv_snprintf_returns_bogus],
734 [
735 AC_RUN_IFELSE(
736 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
737 #include "stdarg.h"
739 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
740 {
741 int ret;
742 va_list ap;
743 va_start(ap, format);
744 ret = vsnprintf(str, maxsize, format, ap);
745 va_end(ap);
746 return ret;
747 }],
748 [[char buf[6];
749 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
750 || strcmp(buf, "12")) return 1;
751 if (snprintf(buf, 3, "%s", "12345") != 5
752 || strcmp(buf, "12")) return 1]])],
753 [ac_cv_snprintf_returns_bogus=no],
754 [ac_cv_snprintf_returns_bogus=yes])
755 ])
756 if test $ac_cv_snprintf_returns_bogus = yes; then
757 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
758 else
759 SNPRINTF_RETURNS_BOGUS=
760 fi
761 AC_SUBST(SNPRINTF_RETURNS_BOGUS)
764 ## Checks for library functions.
765 ## (in default C library and libraries checked by AC_CHECK_LIB)
766 AC_MSG_NOTICE([CHECKS for library functions])
767 #
768 # Define NO_LIBGEN_H if you don't have libgen.h.
769 AC_CHECK_HEADER([libgen.h],
770 [NO_LIBGEN_H=],
771 [NO_LIBGEN_H=YesPlease])
772 AC_SUBST(NO_LIBGEN_H)
773 #
774 # Define HAVE_PATHS_H if you have paths.h.
775 AC_CHECK_HEADER([paths.h],
776 [HAVE_PATHS_H=YesPlease],
777 [HAVE_PATHS_H=])
778 AC_SUBST(HAVE_PATHS_H)
779 #
780 # Define NO_STRCASESTR if you don't have strcasestr.
781 GIT_CHECK_FUNC(strcasestr,
782 [NO_STRCASESTR=],
783 [NO_STRCASESTR=YesPlease])
784 AC_SUBST(NO_STRCASESTR)
785 #
786 # Define NO_STRTOK_R if you don't have strtok_r
787 GIT_CHECK_FUNC(strtok_r,
788 [NO_STRTOK_R=],
789 [NO_STRTOK_R=YesPlease])
790 AC_SUBST(NO_STRTOK_R)
791 #
792 # Define NO_MEMMEM if you don't have memmem.
793 GIT_CHECK_FUNC(memmem,
794 [NO_MEMMEM=],
795 [NO_MEMMEM=YesPlease])
796 AC_SUBST(NO_MEMMEM)
797 #
798 # Define NO_STRLCPY if you don't have strlcpy.
799 GIT_CHECK_FUNC(strlcpy,
800 [NO_STRLCPY=],
801 [NO_STRLCPY=YesPlease])
802 AC_SUBST(NO_STRLCPY)
803 #
804 # Define NO_UINTMAX_T if your platform does not have uintmax_t
805 AC_CHECK_TYPE(uintmax_t,
806 [NO_UINTMAX_T=],
807 [NO_UINTMAX_T=YesPlease],[
808 #include <inttypes.h>
809 ])
810 AC_SUBST(NO_UINTMAX_T)
811 #
812 # Define NO_STRTOUMAX if you don't have strtoumax in the C library.
813 GIT_CHECK_FUNC(strtoumax,
814 [NO_STRTOUMAX=],
815 [NO_STRTOUMAX=YesPlease])
816 AC_SUBST(NO_STRTOUMAX)
817 #
818 # Define NO_SETENV if you don't have setenv in the C library.
819 GIT_CHECK_FUNC(setenv,
820 [NO_SETENV=],
821 [NO_SETENV=YesPlease])
822 AC_SUBST(NO_SETENV)
823 #
824 # Define NO_UNSETENV if you don't have unsetenv in the C library.
825 GIT_CHECK_FUNC(unsetenv,
826 [NO_UNSETENV=],
827 [NO_UNSETENV=YesPlease])
828 AC_SUBST(NO_UNSETENV)
829 #
830 # Define NO_MKDTEMP if you don't have mkdtemp in the C library.
831 GIT_CHECK_FUNC(mkdtemp,
832 [NO_MKDTEMP=],
833 [NO_MKDTEMP=YesPlease])
834 AC_SUBST(NO_MKDTEMP)
835 #
836 # Define NO_MKSTEMPS if you don't have mkstemps in the C library.
837 GIT_CHECK_FUNC(mkstemps,
838 [NO_MKSTEMPS=],
839 [NO_MKSTEMPS=YesPlease])
840 AC_SUBST(NO_MKSTEMPS)
841 #
842 #
843 # Define NO_MMAP if you want to avoid mmap.
844 #
845 # Define NO_ICONV if your libc does not properly support iconv.
848 ## Other checks.
849 # Define USE_PIC if you need the main git objects to be built with -fPIC
850 # in order to build and link perl/Git.so. x86-64 seems to need this.
851 #
852 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
853 # Enable it on Windows. By default, symrefs are still used.
854 #
855 # Define NO_PTHREADS if we do not have pthreads.
856 #
857 # Define PTHREAD_LIBS to the linker flag used for Pthread support.
858 AC_DEFUN([PTHREADTEST_SRC], [
859 #include <pthread.h>
861 int main(void)
862 {
863 pthread_mutex_t test_mutex;
864 int retcode = 0;
865 retcode |= pthread_mutex_init(&test_mutex,(void *)0);
866 retcode |= pthread_mutex_lock(&test_mutex);
867 retcode |= pthread_mutex_unlock(&test_mutex);
868 return retcode;
869 }
870 ])
872 dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
873 dnl [[#include <pthread.h>]],
874 dnl [[pthread_mutex_t test_mutex;]]
875 dnl )])
877 NO_PTHREADS=UnfortunatelyYes
878 PTHREAD_LIBS=
880 if test -n "$USER_NOPTHREAD"; then
881 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
882 # handle these separately since PTHREAD_CFLAGS could be '-lpthreads
883 # -D_REENTRANT' or some such.
884 elif test -z "$PTHREAD_CFLAGS"; then
885 threads_found=no
886 for opt in -mt -pthread -lpthread; do
887 old_CFLAGS="$CFLAGS"
888 CFLAGS="$opt $CFLAGS"
889 AC_MSG_CHECKING([Checking for POSIX Threads with '$opt'])
890 AC_LINK_IFELSE(PTHREADTEST_SRC,
891 [AC_MSG_RESULT([yes])
892 NO_PTHREADS=
893 PTHREAD_LIBS="$opt"
894 PTHREAD_CFLAGS="$opt"
895 threads_found=yes
896 break
897 ],
898 [AC_MSG_RESULT([no])])
899 CFLAGS="$old_CFLAGS"
900 done
901 if test $threads_found != yes; then
902 AC_CHECK_LIB([pthread], [pthread_create],
903 [PTHREAD_LIBS="-lpthread"],
904 [NO_PTHREADS=UnfortunatelyYes])
905 fi
906 else
907 old_CFLAGS="$CFLAGS"
908 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
909 AC_MSG_CHECKING([Checking for POSIX Threads with '$PTHREAD_CFLAGS'])
910 AC_LINK_IFELSE(PTHREADTEST_SRC,
911 [AC_MSG_RESULT([yes])
912 NO_PTHREADS=
913 PTHREAD_LIBS="$PTHREAD_CFLAGS"
914 ],
915 [AC_MSG_RESULT([no])])
917 CFLAGS="$old_CFLAGS"
918 fi
920 CFLAGS="$old_CFLAGS"
922 AC_SUBST(PTHREAD_CFLAGS)
923 AC_SUBST(PTHREAD_LIBS)
924 AC_SUBST(NO_PTHREADS)
926 ## Output files
927 AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
928 AC_OUTPUT
931 ## Cleanup
932 rm -f "${config_append}"