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=$enableval);
200 ])
202 ## Site configuration (override autodetection)
203 ## --with-PACKAGE[=ARG] and --without-PACKAGE
204 AC_MSG_NOTICE([CHECKS for site configuration])
205 #
206 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
207 # tests. These tests take up a significant amount of the total test time
208 # but are not needed unless you plan to talk to SVN repos.
209 #
210 # Define PPC_SHA1 environment variable when running make to make use of
211 # a bundled SHA1 routine optimized for PowerPC.
212 #
213 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
214 # This also implies BLK_SHA1.
215 #
216 # Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
217 # /foo/bar/include and /foo/bar/lib directories.
218 AC_ARG_WITH(openssl,
219 AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
220 AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),\
221 GIT_PARSE_WITH(openssl))
222 #
223 # Define USE_LIBPCRE if you have and want to use libpcre. git-grep will be
224 # able to use Perl-compatible regular expressions.
225 #
226 # Define LIBPCREDIR=/foo/bar if your libpcre header and library files are in
227 # /foo/bar/include and /foo/bar/lib directories.
228 #
229 AC_ARG_WITH(libpcre,
230 AS_HELP_STRING([--with-libpcre],[support Perl-compatible regexes (default is NO)])
231 AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]),
232 if test "$withval" = "no"; then \
233 USE_LIBPCRE=; \
234 elif test "$withval" = "yes"; then \
235 USE_LIBPCRE=YesPlease; \
236 else
237 USE_LIBPCRE=YesPlease; \
238 LIBPCREDIR=$withval; \
239 AC_MSG_NOTICE([Setting LIBPCREDIR to $withval]); \
240 GIT_CONF_APPEND_LINE(LIBPCREDIR=$withval); \
241 fi \
242 )
243 #
244 # Define NO_CURL if you do not have curl installed. git-http-pull and
245 # git-http-push are not built, and you cannot use http:// and https://
246 # transports.
247 #
248 # Define CURLDIR=/foo/bar if your curl header and library files are in
249 # /foo/bar/include and /foo/bar/lib directories.
250 AC_ARG_WITH(curl,
251 AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
252 AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
253 GIT_PARSE_WITH(curl))
254 #
255 # Define NO_EXPAT if you do not have expat installed. git-http-push is
256 # not built, and you cannot push using http:// and https:// transports.
257 #
258 # Define EXPATDIR=/foo/bar if your expat header and library files are in
259 # /foo/bar/include and /foo/bar/lib directories.
260 AC_ARG_WITH(expat,
261 AS_HELP_STRING([--with-expat],
262 [support git-push using http:// and https:// transports via WebDAV (default is YES)])
263 AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
264 GIT_PARSE_WITH(expat))
265 #
266 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
267 # installed in /sw, but don't want GIT to link against any libraries
268 # installed there. If defined you may specify your own (or Fink's)
269 # include directories and library directories by defining CFLAGS
270 # and LDFLAGS appropriately.
271 #
272 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
273 # have DarwinPorts installed in /opt/local, but don't want GIT to
274 # link against any libraries installed there. If defined you may
275 # specify your own (or DarwinPort's) include directories and
276 # library directories by defining CFLAGS and LDFLAGS appropriately.
277 #
278 # Define NO_MMAP if you want to avoid mmap.
279 #
280 # Define NO_ICONV if your libc does not properly support iconv.
281 AC_ARG_WITH(iconv,
282 AS_HELP_STRING([--without-iconv],
283 [if your architecture doesn't properly support iconv])
284 AS_HELP_STRING([--with-iconv=PATH],
285 [PATH is prefix for libiconv library and headers])
286 AS_HELP_STRING([],
287 [used only if you need linking with libiconv]),
288 GIT_PARSE_WITH(iconv))
290 ## --enable-FEATURE[=ARG] and --disable-FEATURE
291 #
292 # Define USE_NSEC below if you want git to care about sub-second file mtimes
293 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
294 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
295 # randomly break unless your underlying filesystem supports those sub-second
296 # times (my ext3 doesn't).
297 #
298 # Define USE_STDEV below if you want git to care about the underlying device
299 # change being considered an inode change from the update-index perspective.
301 #
302 # Allow user to set ETC_GITCONFIG variable
303 GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
304 Use VALUE instead of /etc/gitconfig as the
305 global git configuration file.
306 If VALUE is not fully qualified it will be interpreted
307 as a path relative to the computed prefix at runtime.)
309 #
310 # Allow user to set ETC_GITATTRIBUTES variable
311 GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
312 Use VALUE instead of /etc/gitattributes as the
313 global git attributes file.
314 If VALUE is not fully qualified it will be interpreted
315 as a path relative to the computed prefix at runtime.)
317 #
318 # Allow user to set the default pager
319 GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
320 Use VALUE as the fall-back pager instead of 'less'.
321 This is used by things like 'git log' when the user
322 does not specify a pager to use through alternate
323 methods. eg: /usr/bin/pager)
324 #
325 # Allow user to set the default editor
326 GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
327 Use VALUE as the fall-back editor instead of 'vi'.
328 This is used by things like 'git commit' when the user
329 does not specify a preferred editor through other
330 methods. eg: /usr/bin/editor)
332 #
333 # Define SHELL_PATH to provide path to shell.
334 GIT_ARG_SET_PATH(shell)
335 #
336 # Define PERL_PATH to provide path to Perl.
337 GIT_ARG_SET_PATH(perl)
338 #
339 # Define PYTHON_PATH to provide path to Python.
340 GIT_ARG_SET_PATH(python, allow-without)
341 #
342 # Define ZLIB_PATH to provide path to zlib.
343 GIT_ARG_SET_PATH(zlib)
344 #
345 # Declare the with-tcltk/without-tcltk options.
346 AC_ARG_WITH(tcltk,
347 AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
348 AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
349 AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
350 AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),\
351 GIT_PARSE_WITH(tcltk))
352 #
355 ## Checks for programs.
356 AC_MSG_NOTICE([CHECKS for programs])
357 #
358 AC_PROG_CC([cc gcc])
359 AC_C_INLINE
360 case $ac_cv_c_inline in
361 inline | yes | no) ;;
362 *) AC_SUBST([INLINE], [$ac_cv_c_inline]) ;;
363 esac
365 # which switch to pass runtime path to dynamic libraries to the linker
366 AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
367 SAVE_LDFLAGS="${LDFLAGS}"
368 LDFLAGS="${SAVE_LDFLAGS} -R /"
369 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
370 LDFLAGS="${SAVE_LDFLAGS}"
371 ])
372 if test "$git_cv_ld_dashr" = "yes"; then
373 AC_SUBST(CC_LD_DYNPATH, [-R])
374 else
375 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
376 SAVE_LDFLAGS="${LDFLAGS}"
377 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
378 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
379 LDFLAGS="${SAVE_LDFLAGS}"
380 ])
381 if test "$git_cv_ld_wl_rpath" = "yes"; then
382 AC_SUBST(CC_LD_DYNPATH, [-Wl,-rpath,])
383 else
384 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
385 SAVE_LDFLAGS="${LDFLAGS}"
386 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
387 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
388 LDFLAGS="${SAVE_LDFLAGS}"
389 ])
390 if test "$git_cv_ld_rpath" = "yes"; then
391 AC_SUBST(CC_LD_DYNPATH, [-rpath])
392 else
393 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
394 fi
395 fi
396 fi
397 #AC_PROG_INSTALL # needs install-sh or install.sh in sources
398 AC_CHECK_TOOLS(AR, [gar ar], :)
399 AC_CHECK_PROGS(TAR, [gtar tar])
400 AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
401 # TCLTK_PATH will be set to some value if we want Tcl/Tk
402 # or will be empty otherwise.
403 if test -z "$NO_TCLTK"; then
404 if test "$with_tcltk" = ""; then
405 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
406 TCLTK_PATH=wish
407 AC_SUBST(TCLTK_PATH)
408 elif test "$with_tcltk" = "yes"; then
409 # Tcl/Tk check requested.
410 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
411 else
412 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
413 TCLTK_PATH="$with_tcltk"
414 AC_SUBST(TCLTK_PATH)
415 fi
416 fi
417 AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
418 if test -n "$ASCIIDOC"; then
419 AC_MSG_CHECKING([for asciidoc version])
420 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
421 case "${asciidoc_version}" in
422 asciidoc' '7*)
423 ASCIIDOC7=YesPlease
424 AC_MSG_RESULT([${asciidoc_version} > 7])
425 ;;
426 asciidoc' '8*)
427 ASCIIDOC7=
428 AC_MSG_RESULT([${asciidoc_version}])
429 ;;
430 *)
431 ASCIIDOC7=
432 AC_MSG_RESULT([${asciidoc_version} (unknown)])
433 ;;
434 esac
435 fi
436 AC_SUBST(ASCIIDOC7)
439 ## Checks for libraries.
440 AC_MSG_NOTICE([CHECKS for libraries])
441 #
442 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
443 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
445 GIT_STASH_FLAGS($OPENSSLDIR)
447 AC_CHECK_LIB([crypto], [SHA1_Init],
448 [NEEDS_SSL_WITH_CRYPTO=],
449 [AC_CHECK_LIB([ssl], [SHA1_Init],
450 [NEEDS_SSL_WITH_CRYPTO=YesPlease],
451 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
453 GIT_UNSTASH_FLAGS($OPENSSLDIR)
455 AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
456 AC_SUBST(NO_OPENSSL)
458 #
459 # Define USE_LIBPCRE if you have and want to use libpcre. git-grep will be
460 # able to use Perl-compatible regular expressions.
461 #
463 if test -n "$USE_LIBPCRE"; then
465 GIT_STASH_FLAGS($LIBPCREDIR)
467 AC_CHECK_LIB([pcre], [pcre_version],
468 [USE_LIBPCRE=YesPlease],
469 [USE_LIBPCRE=])
471 GIT_UNSTASH_FLAGS($LIBPCREDIR)
473 AC_SUBST(USE_LIBPCRE)
475 fi
477 #
478 # Define NO_CURL if you do not have libcurl installed. git-http-pull and
479 # git-http-push are not built, and you cannot use http:// and https://
480 # transports.
482 GIT_STASH_FLAGS($CURLDIR)
484 AC_CHECK_LIB([curl], [curl_global_init],
485 [NO_CURL=],
486 [NO_CURL=YesPlease])
488 GIT_UNSTASH_FLAGS($CURLDIR)
490 AC_SUBST(NO_CURL)
492 #
493 # Define NO_EXPAT if you do not have expat installed. git-http-push is
494 # not built, and you cannot push using http:// and https:// transports.
496 GIT_STASH_FLAGS($EXPATDIR)
498 AC_CHECK_LIB([expat], [XML_ParserCreate],
499 [NO_EXPAT=],
500 [NO_EXPAT=YesPlease])
502 GIT_UNSTASH_FLAGS($EXPATDIR)
504 AC_SUBST(NO_EXPAT)
506 #
507 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
508 # some Solaris installations).
509 # Define NO_ICONV if neither libc nor libiconv support iconv.
511 if test -z "$NO_ICONV"; then
513 GIT_STASH_FLAGS($ICONVDIR)
515 AC_DEFUN([ICONVTEST_SRC],
516 [AC_LANG_PROGRAM([#include <iconv.h>],
517 [iconv_open("", "");])])
519 if test -n "$ICONVDIR"; then
520 lib_order="-liconv -lc"
521 else
522 lib_order="-lc -liconv"
523 fi
525 NO_ICONV=YesPlease
527 for l in $lib_order; do
528 if test "$l" = "-liconv"; then
529 NEEDS_LIBICONV=YesPlease
530 else
531 NEEDS_LIBICONV=
532 fi
534 old_LIBS="$LIBS"
535 LIBS="$LIBS $l"
536 AC_MSG_CHECKING([for iconv in $l])
537 AC_LINK_IFELSE([ICONVTEST_SRC],
538 [AC_MSG_RESULT([yes])
539 NO_ICONV=
540 break],
541 [AC_MSG_RESULT([no])])
542 LIBS="$old_LIBS"
543 done
545 #in case of break
546 LIBS="$old_LIBS"
548 GIT_UNSTASH_FLAGS($ICONVDIR)
550 AC_SUBST(NEEDS_LIBICONV)
551 AC_SUBST(NO_ICONV)
553 if test -n "$NO_ICONV"; then
554 NEEDS_LIBICONV=
555 fi
557 fi
559 #
560 # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
562 GIT_STASH_FLAGS($ZLIB_PATH)
564 AC_DEFUN([ZLIBTEST_SRC], [
565 AC_LANG_PROGRAM([#include <zlib.h>],
566 [deflateBound(0, 0);])])
567 AC_MSG_CHECKING([for deflateBound in -lz])
568 old_LIBS="$LIBS"
569 LIBS="$LIBS -lz"
570 AC_LINK_IFELSE([ZLIBTEST_SRC],
571 [AC_MSG_RESULT([yes])],
572 [AC_MSG_RESULT([no])
573 NO_DEFLATE_BOUND=yes])
574 LIBS="$old_LIBS"
576 GIT_UNSTASH_FLAGS($ZLIB_PATH)
578 AC_SUBST(NO_DEFLATE_BOUND)
580 #
581 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
582 # Patrick Mauritz).
583 AC_CHECK_LIB([c], [socket],
584 [NEEDS_SOCKET=],
585 [NEEDS_SOCKET=YesPlease])
586 AC_SUBST(NEEDS_SOCKET)
587 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
589 #
590 # The next few tests will define NEEDS_RESOLV if linking with
591 # libresolv provides some of the functions we would normally get
592 # from libc.
593 NEEDS_RESOLV=
594 AC_SUBST(NEEDS_RESOLV)
595 #
596 # Define NO_INET_NTOP if linking with -lresolv is not enough.
597 # Solaris 2.7 in particular hos inet_ntop in -lresolv.
598 NO_INET_NTOP=
599 AC_SUBST(NO_INET_NTOP)
600 AC_CHECK_FUNC([inet_ntop],
601 [],
602 [AC_CHECK_LIB([resolv], [inet_ntop],
603 [NEEDS_RESOLV=YesPlease],
604 [NO_INET_NTOP=YesPlease])
605 ])
606 #
607 # Define NO_INET_PTON if linking with -lresolv is not enough.
608 # Solaris 2.7 in particular hos inet_pton in -lresolv.
609 NO_INET_PTON=
610 AC_SUBST(NO_INET_PTON)
611 AC_CHECK_FUNC([inet_pton],
612 [],
613 [AC_CHECK_LIB([resolv], [inet_pton],
614 [NEEDS_RESOLV=YesPlease],
615 [NO_INET_PTON=YesPlease])
616 ])
617 #
618 # Define NO_HSTRERROR if linking with -lresolv is not enough.
619 # Solaris 2.6 in particular has no hstrerror, even in -lresolv.
620 NO_HSTRERROR=
621 AC_CHECK_FUNC([hstrerror],
622 [],
623 [AC_CHECK_LIB([resolv], [hstrerror],
624 [NEEDS_RESOLV=YesPlease],
625 [NO_HSTRERROR=YesPlease])
626 ])
627 AC_SUBST(NO_HSTRERROR)
628 #
629 # If any of the above tests determined that -lresolv is needed at
630 # build-time, also set it here for remaining configure-time checks.
631 test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
633 AC_CHECK_LIB([c], [basename],
634 [NEEDS_LIBGEN=],
635 [NEEDS_LIBGEN=YesPlease])
636 AC_SUBST(NEEDS_LIBGEN)
637 test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
639 AC_CHECK_LIB([c], [gettext],
640 [LIBC_CONTAINS_LIBINTL=YesPlease],
641 [LIBC_CONTAINS_LIBINTL=])
642 AC_SUBST(LIBC_CONTAINS_LIBINTL)
644 #
645 # Define NO_GETTEXT if you don't want Git output to be translated.
646 # A translated Git requires GNU libintl or another gettext implementation
647 AC_CHECK_HEADER([libintl.h],
648 [NO_GETTEXT=],
649 [NO_GETTEXT=YesPlease])
650 AC_SUBST(NO_GETTEXT)
652 if test -z "$NO_GETTEXT"; then
653 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
654 fi
656 ## Checks for header files.
657 AC_MSG_NOTICE([CHECKS for header files])
658 #
659 # Define NO_SYS_SELECT_H if you don't have sys/select.h.
660 AC_CHECK_HEADER([sys/select.h],
661 [NO_SYS_SELECT_H=],
662 [NO_SYS_SELECT_H=UnfortunatelyYes])
663 AC_SUBST(NO_SYS_SELECT_H)
664 #
665 # Define NO_SYS_POLL_H if you don't have sys/poll.h
666 AC_CHECK_HEADER([sys/poll.h],
667 [NO_SYS_POLL_H=],
668 [NO_SYS_POLL_H=UnfortunatelyYes])
669 AC_SUBST(NO_SYS_POLL_H)
670 #
671 # Define NO_INTTYPES_H if you don't have inttypes.h
672 AC_CHECK_HEADER([inttypes.h],
673 [NO_INTTYPES_H=],
674 [NO_INTTYPES_H=UnfortunatelyYes])
675 AC_SUBST(NO_INTTYPES_H)
676 #
677 # Define OLD_ICONV if your library has an old iconv(), where the second
678 # (input buffer pointer) parameter is declared with type (const char **).
679 AC_DEFUN([OLDICONVTEST_SRC], [
680 AC_LANG_PROGRAM([[
681 #include <iconv.h>
683 extern size_t iconv(iconv_t cd,
684 char **inbuf, size_t *inbytesleft,
685 char **outbuf, size_t *outbytesleft);
686 ]], [])])
688 GIT_STASH_FLAGS($ICONVDIR)
690 AC_MSG_CHECKING([for old iconv()])
691 AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
692 [AC_MSG_RESULT([no])],
693 [AC_MSG_RESULT([yes])
694 OLD_ICONV=UnfortunatelyYes])
696 GIT_UNSTASH_FLAGS($ICONVDIR)
698 AC_SUBST(OLD_ICONV)
700 ## Checks for typedefs, structures, and compiler characteristics.
701 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
702 #
703 TYPE_SOCKLEN_T
704 case $ac_cv_type_socklen_t in
705 yes) ;;
706 *) AC_SUBST([SOCKLEN_T], [$git_cv_socklen_t_equiv]) ;;
707 esac
709 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
710 AC_CHECK_MEMBER(struct dirent.d_ino,
711 [NO_D_INO_IN_DIRENT=],
712 [NO_D_INO_IN_DIRENT=YesPlease],
713 [#include <dirent.h>])
714 AC_SUBST(NO_D_INO_IN_DIRENT)
715 #
716 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
717 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
718 AC_CHECK_MEMBER(struct dirent.d_type,
719 [NO_D_TYPE_IN_DIRENT=],
720 [NO_D_TYPE_IN_DIRENT=YesPlease],
721 [#include <dirent.h>])
722 AC_SUBST(NO_D_TYPE_IN_DIRENT)
723 #
724 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
725 # sockaddr_storage.
726 AC_CHECK_TYPE(struct sockaddr_storage,
727 [NO_SOCKADDR_STORAGE=],
728 [NO_SOCKADDR_STORAGE=YesPlease],[
729 #include <sys/types.h>
730 #include <sys/socket.h>
731 ])
732 AC_SUBST(NO_SOCKADDR_STORAGE)
733 #
734 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
735 AC_CHECK_TYPE([struct addrinfo],[
736 GIT_CHECK_FUNC([getaddrinfo],
737 [NO_IPV6=],
738 [NO_IPV6=YesPlease])
739 ],[NO_IPV6=YesPlease],[
740 #include <sys/types.h>
741 #include <sys/socket.h>
742 #include <netdb.h>
743 ])
744 AC_SUBST(NO_IPV6)
745 #
746 # Define NO_REGEX if you have no or inferior regex support in your C library.
747 AC_CACHE_CHECK([whether the platform regex can handle null bytes],
748 [ac_cv_c_excellent_regex], [
749 AC_EGREP_CPP(yippeeyeswehaveit,
750 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
751 #include <regex.h>
752 ],
753 [#ifdef REG_STARTEND
754 yippeeyeswehaveit
755 #endif
756 ]),
757 [ac_cv_c_excellent_regex=yes],
758 [ac_cv_c_excellent_regex=no])
759 ])
760 if test $ac_cv_c_excellent_regex = yes; then
761 NO_REGEX=
762 else
763 NO_REGEX=YesPlease
764 fi
765 AC_SUBST(NO_REGEX)
766 #
767 # Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
768 # when attempting to read from an fopen'ed directory.
769 AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
770 [ac_cv_fread_reads_directories],
771 [
772 AC_RUN_IFELSE(
773 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
774 [[char c;
775 FILE *f = fopen(".", "r");
776 return f && fread(&c, 1, 1, f)]])],
777 [ac_cv_fread_reads_directories=no],
778 [ac_cv_fread_reads_directories=yes])
779 ])
780 if test $ac_cv_fread_reads_directories = yes; then
781 FREAD_READS_DIRECTORIES=UnfortunatelyYes
782 else
783 FREAD_READS_DIRECTORIES=
784 fi
785 AC_SUBST(FREAD_READS_DIRECTORIES)
786 #
787 # Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
788 # or vsnprintf() return -1 instead of number of characters which would
789 # have been written to the final string if enough space had been available.
790 AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
791 [ac_cv_snprintf_returns_bogus],
792 [
793 AC_RUN_IFELSE(
794 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
795 #include "stdarg.h"
797 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
798 {
799 int ret;
800 va_list ap;
801 va_start(ap, format);
802 ret = vsnprintf(str, maxsize, format, ap);
803 va_end(ap);
804 return ret;
805 }],
806 [[char buf[6];
807 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
808 || strcmp(buf, "12")) return 1;
809 if (snprintf(buf, 3, "%s", "12345") != 5
810 || strcmp(buf, "12")) return 1]])],
811 [ac_cv_snprintf_returns_bogus=no],
812 [ac_cv_snprintf_returns_bogus=yes])
813 ])
814 if test $ac_cv_snprintf_returns_bogus = yes; then
815 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
816 else
817 SNPRINTF_RETURNS_BOGUS=
818 fi
819 AC_SUBST(SNPRINTF_RETURNS_BOGUS)
822 ## Checks for library functions.
823 ## (in default C library and libraries checked by AC_CHECK_LIB)
824 AC_MSG_NOTICE([CHECKS for library functions])
825 #
826 # Define NO_LIBGEN_H if you don't have libgen.h.
827 AC_CHECK_HEADER([libgen.h],
828 [NO_LIBGEN_H=],
829 [NO_LIBGEN_H=YesPlease])
830 AC_SUBST(NO_LIBGEN_H)
831 #
832 # Define HAVE_PATHS_H if you have paths.h.
833 AC_CHECK_HEADER([paths.h],
834 [HAVE_PATHS_H=YesPlease],
835 [HAVE_PATHS_H=])
836 AC_SUBST(HAVE_PATHS_H)
837 #
838 # Define HAVE_LIBCHARSET_H if have libcharset.h
839 AC_CHECK_HEADER([libcharset.h],
840 [HAVE_LIBCHARSET_H=YesPlease],
841 [HAVE_LIBCHARSET_H=])
842 AC_SUBST(HAVE_LIBCHARSET_H)
843 # Define CHARSET_LIB if libiconv does not export the locale_charset symbol
844 # and libcharset does
845 CHARSET_LIB=
846 AC_CHECK_LIB([iconv], [locale_charset],
847 [],
848 [AC_CHECK_LIB([charset], [locale_charset],
849 [CHARSET_LIB=-lcharset])
850 ]
851 )
852 AC_SUBST(CHARSET_LIB)
853 #
854 # Define NO_STRCASESTR if you don't have strcasestr.
855 GIT_CHECK_FUNC(strcasestr,
856 [NO_STRCASESTR=],
857 [NO_STRCASESTR=YesPlease])
858 AC_SUBST(NO_STRCASESTR)
859 #
860 # Define NO_STRTOK_R if you don't have strtok_r
861 GIT_CHECK_FUNC(strtok_r,
862 [NO_STRTOK_R=],
863 [NO_STRTOK_R=YesPlease])
864 AC_SUBST(NO_STRTOK_R)
865 #
866 # Define NO_FNMATCH if you don't have fnmatch
867 GIT_CHECK_FUNC(fnmatch,
868 [NO_FNMATCH=],
869 [NO_FNMATCH=YesPlease])
870 AC_SUBST(NO_FNMATCH)
871 #
872 # Define NO_FNMATCH_CASEFOLD if your fnmatch function doesn't have the
873 # FNM_CASEFOLD GNU extension.
874 AC_CACHE_CHECK([whether the fnmatch function supports the FNMATCH_CASEFOLD GNU extension],
875 [ac_cv_c_excellent_fnmatch], [
876 AC_EGREP_CPP(yippeeyeswehaveit,
877 AC_LANG_PROGRAM([
878 #include <fnmatch.h>
879 ],
880 [#ifdef FNM_CASEFOLD
881 yippeeyeswehaveit
882 #endif
883 ]),
884 [ac_cv_c_excellent_fnmatch=yes],
885 [ac_cv_c_excellent_fnmatch=no])
886 ])
887 if test $ac_cv_c_excellent_fnmatch = yes; then
888 NO_FNMATCH_CASEFOLD=
889 else
890 NO_FNMATCH_CASEFOLD=YesPlease
891 fi
892 AC_SUBST(NO_FNMATCH_CASEFOLD)
893 #
894 # Define NO_MEMMEM if you don't have memmem.
895 GIT_CHECK_FUNC(memmem,
896 [NO_MEMMEM=],
897 [NO_MEMMEM=YesPlease])
898 AC_SUBST(NO_MEMMEM)
899 #
900 # Define NO_STRLCPY if you don't have strlcpy.
901 GIT_CHECK_FUNC(strlcpy,
902 [NO_STRLCPY=],
903 [NO_STRLCPY=YesPlease])
904 AC_SUBST(NO_STRLCPY)
905 #
906 # Define NO_UINTMAX_T if your platform does not have uintmax_t
907 AC_CHECK_TYPE(uintmax_t,
908 [NO_UINTMAX_T=],
909 [NO_UINTMAX_T=YesPlease],[
910 #include <inttypes.h>
911 ])
912 AC_SUBST(NO_UINTMAX_T)
913 #
914 # Define NO_STRTOUMAX if you don't have strtoumax in the C library.
915 GIT_CHECK_FUNC(strtoumax,
916 [NO_STRTOUMAX=],
917 [NO_STRTOUMAX=YesPlease])
918 AC_SUBST(NO_STRTOUMAX)
919 #
920 # Define NO_SETENV if you don't have setenv in the C library.
921 GIT_CHECK_FUNC(setenv,
922 [NO_SETENV=],
923 [NO_SETENV=YesPlease])
924 AC_SUBST(NO_SETENV)
925 #
926 # Define NO_UNSETENV if you don't have unsetenv in the C library.
927 GIT_CHECK_FUNC(unsetenv,
928 [NO_UNSETENV=],
929 [NO_UNSETENV=YesPlease])
930 AC_SUBST(NO_UNSETENV)
931 #
932 # Define NO_MKDTEMP if you don't have mkdtemp in the C library.
933 GIT_CHECK_FUNC(mkdtemp,
934 [NO_MKDTEMP=],
935 [NO_MKDTEMP=YesPlease])
936 AC_SUBST(NO_MKDTEMP)
937 #
938 # Define NO_MKSTEMPS if you don't have mkstemps in the C library.
939 GIT_CHECK_FUNC(mkstemps,
940 [NO_MKSTEMPS=],
941 [NO_MKSTEMPS=YesPlease])
942 AC_SUBST(NO_MKSTEMPS)
943 #
944 # Define NO_INITGROUPS if you don't have initgroups in the C library.
945 GIT_CHECK_FUNC(initgroups,
946 [NO_INITGROUPS=],
947 [NO_INITGROUPS=YesPlease])
948 AC_SUBST(NO_INITGROUPS)
949 #
950 #
951 # Define NO_MMAP if you want to avoid mmap.
952 #
953 # Define NO_ICONV if your libc does not properly support iconv.
956 ## Other checks.
957 # Define USE_PIC if you need the main git objects to be built with -fPIC
958 # in order to build and link perl/Git.so. x86-64 seems to need this.
959 #
960 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
961 # Enable it on Windows. By default, symrefs are still used.
962 #
963 # Define NO_PTHREADS if we do not have pthreads.
964 #
965 # Define PTHREAD_LIBS to the linker flag used for Pthread support.
966 AC_DEFUN([PTHREADTEST_SRC], [
967 AC_LANG_PROGRAM([[
968 #include <pthread.h>
969 ]], [[
970 pthread_mutex_t test_mutex;
971 pthread_key_t test_key;
972 int retcode = 0;
973 retcode |= pthread_key_create(&test_key, (void *)0);
974 retcode |= pthread_mutex_init(&test_mutex,(void *)0);
975 retcode |= pthread_mutex_lock(&test_mutex);
976 retcode |= pthread_mutex_unlock(&test_mutex);
977 return retcode;
978 ]])])
980 dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
981 dnl [[#include <pthread.h>]],
982 dnl [[pthread_mutex_t test_mutex;]]
983 dnl )])
985 NO_PTHREADS=UnfortunatelyYes
986 PTHREAD_LIBS=
988 if test -n "$USER_NOPTHREAD"; then
989 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
990 # handle these separately since PTHREAD_CFLAGS could be '-lpthreads
991 # -D_REENTRANT' or some such.
992 elif test -z "$PTHREAD_CFLAGS"; then
993 threads_found=no
994 for opt in -mt -pthread -lpthread; do
995 old_CFLAGS="$CFLAGS"
996 CFLAGS="$opt $CFLAGS"
997 AC_MSG_CHECKING([Checking for POSIX Threads with '$opt'])
998 AC_LINK_IFELSE([PTHREADTEST_SRC],
999 [AC_MSG_RESULT([yes])
1000 NO_PTHREADS=
1001 PTHREAD_LIBS="$opt"
1002 PTHREAD_CFLAGS="$opt"
1003 threads_found=yes
1004 break
1005 ],
1006 [AC_MSG_RESULT([no])])
1007 CFLAGS="$old_CFLAGS"
1008 done
1009 if test $threads_found != yes; then
1010 AC_CHECK_LIB([pthread], [pthread_create],
1011 [PTHREAD_LIBS="-lpthread"],
1012 [NO_PTHREADS=UnfortunatelyYes])
1013 fi
1014 else
1015 old_CFLAGS="$CFLAGS"
1016 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1017 AC_MSG_CHECKING([Checking for POSIX Threads with '$PTHREAD_CFLAGS'])
1018 AC_LINK_IFELSE([PTHREADTEST_SRC],
1019 [AC_MSG_RESULT([yes])
1020 NO_PTHREADS=
1021 PTHREAD_LIBS="$PTHREAD_CFLAGS"
1022 ],
1023 [AC_MSG_RESULT([no])])
1025 CFLAGS="$old_CFLAGS"
1026 fi
1028 CFLAGS="$old_CFLAGS"
1030 AC_SUBST(PTHREAD_CFLAGS)
1031 AC_SUBST(PTHREAD_LIBS)
1032 AC_SUBST(NO_PTHREADS)
1034 ## Output files
1035 AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
1036 AC_OUTPUT
1039 ## Cleanup
1040 rm -f "${config_append}"