Merge branch 'dt/remote-helper-doc-re-lock-option'
[git/git.git] / configure.ac
1 # -*- Autoconf -*-
2 # Process this file with autoconf to produce a configure script.
3
4 ## Definitions of private macros.
5
6 # GIT_CONF_SUBST(VAL, VAR)
7 # ------------------------
8 # Cause the line "VAR=VAL" to be eventually appended to ${config_file}.
9 AC_DEFUN([GIT_CONF_SUBST],
10 [AC_REQUIRE([GIT_CONF_SUBST_INIT])
11 config_appended_defs="$config_appended_defs${newline}dnl
12 $1=m4_if([$#],[1],[${$1}],[$2])"])
13
14 # GIT_CONF_SUBST_INIT
15 # -------------------
16 # Prepare shell variables and autoconf machine required by later calls
17 # to GIT_CONF_SUBST.
18 AC_DEFUN([GIT_CONF_SUBST_INIT],
19 [config_appended_defs=; newline='
20 '
21 AC_CONFIG_COMMANDS([$config_file],
22 [echo "$config_appended_defs" >> "$config_file"],
23 [config_file=$config_file
24 config_appended_defs="$config_appended_defs"])])
25
26 # GIT_ARG_SET_PATH(PROGRAM)
27 # -------------------------
28 # Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
29 # Optional second argument allows setting NO_PROGRAM=YesPlease if
30 # --without-PROGRAM version used.
31 AC_DEFUN([GIT_ARG_SET_PATH],
32 [AC_ARG_WITH([$1],
33 [AS_HELP_STRING([--with-$1=PATH],
34 [provide PATH to $1])],
35 [GIT_CONF_APPEND_PATH([$1], [$2])],
36 [])])
37
38 # GIT_CONF_APPEND_PATH(PROGRAM)
39 # -----------------------------
40 # Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
41 # Used by GIT_ARG_SET_PATH(PROGRAM)
42 # Optional second argument allows setting NO_PROGRAM=YesPlease if
43 # --without-PROGRAM is used.
44 AC_DEFUN([GIT_CONF_APPEND_PATH],
45 [m4_pushdef([GIT_UC_PROGRAM], m4_toupper([$1]))dnl
46 if test "$withval" = "no"; then
47 if test -n "$2"; then
48 GIT_UC_PROGRAM[]_PATH=$withval
49 AC_MSG_NOTICE([Disabling use of GIT_UC_PROGRAM])
50 GIT_CONF_SUBST([NO_]GIT_UC_PROGRAM, [YesPlease])
51 GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [])
52 else
53 AC_MSG_ERROR([You cannot use git without $1])
54 fi
55 else
56 if test "$withval" = "yes"; then
57 AC_MSG_WARN([You should provide path for --with-$1=PATH])
58 else
59 GIT_UC_PROGRAM[]_PATH=$withval
60 AC_MSG_NOTICE([Setting GIT_UC_PROGRAM[]_PATH to $withval])
61 GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [$withval])
62 fi
63 fi
64 m4_popdef([GIT_UC_PROGRAM])])
65
66 # GIT_PARSE_WITH(PACKAGE)
67 # -----------------------
68 # For use in AC_ARG_WITH action-if-found, for packages default ON.
69 # * Set NO_PACKAGE=YesPlease for --without-PACKAGE
70 # * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
71 # * Unset NO_PACKAGE for --with-PACKAGE without ARG
72 AC_DEFUN([GIT_PARSE_WITH],
73 [m4_pushdef([GIT_UC_PACKAGE], m4_toupper([$1]))dnl
74 if test "$withval" = "no"; then
75 NO_[]GIT_UC_PACKAGE=YesPlease
76 elif test "$withval" = "yes"; then
77 NO_[]GIT_UC_PACKAGE=
78 else
79 NO_[]GIT_UC_PACKAGE=
80 GIT_UC_PACKAGE[]DIR=$withval
81 AC_MSG_NOTICE([Setting GIT_UC_PACKAGE[]DIR to $withval])
82 GIT_CONF_SUBST(GIT_UC_PACKAGE[DIR], [$withval])
83 fi
84 m4_popdef([GIT_UC_PACKAGE])])
85
86 # GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT)
87 # -----------------------------------------------------
88 # Set VAR to the value specied by --with-WITHNAME.
89 # No verification of arguments is performed, but warnings are issued
90 # if either 'yes' or 'no' is specified.
91 # HELP_TEXT is presented when --help is called.
92 # This is a direct way to allow setting variables in the Makefile.
93 AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR],
94 [AC_ARG_WITH([$1],
95 [AS_HELP_STRING([--with-$1=VALUE], $3)],
96 if test -n "$withval"; then
97 if test "$withval" = "yes" -o "$withval" = "no"; then
98 AC_MSG_WARN([You likely do not want either 'yes' or 'no' as]
99 [a value for $1 ($2). Maybe you do...?])
100 fi
101 AC_MSG_NOTICE([Setting $2 to $withval])
102 GIT_CONF_SUBST([$2], [$withval])
103 fi)])# GIT_PARSE_WITH_SET_MAKE_VAR
104
105 #
106 # GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
107 # -----------------------------------------
108 # Similar to AC_CHECK_FUNC, but on systems that do not generate
109 # warnings for missing prototypes (e.g. FreeBSD when compiling without
110 # -Wall), it does not work. By looking for function definition in
111 # libraries, this problem can be worked around.
112 AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[
113 AC_SEARCH_LIBS([$1],,
114 [$2],[$3])
115 ],[$3])])
116
117 #
118 # GIT_STASH_FLAGS(BASEPATH_VAR)
119 # -----------------------------
120 # Allow for easy stashing of LDFLAGS and CPPFLAGS before running
121 # tests that may want to take user settings into account.
122 AC_DEFUN([GIT_STASH_FLAGS],[
123 if test -n "$1"; then
124 old_CPPFLAGS="$CPPFLAGS"
125 old_LDFLAGS="$LDFLAGS"
126 CPPFLAGS="-I$1/include $CPPFLAGS"
127 LDFLAGS="-L$1/$lib $LDFLAGS"
128 fi
129 ])
130
131 dnl
132 dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR)
133 dnl -----------------------------
134 dnl Restore the stashed *FLAGS values.
135 AC_DEFUN([GIT_UNSTASH_FLAGS],[
136 if test -n "$1"; then
137 CPPFLAGS="$old_CPPFLAGS"
138 LDFLAGS="$old_LDFLAGS"
139 fi
140 ])
141
142 ## Configure body starts here.
143
144 AC_PREREQ(2.59)
145 AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
146
147 AC_CONFIG_SRCDIR([git.c])
148
149 config_file=config.mak.autogen
150 config_in=config.mak.in
151
152 GIT_CONF_SUBST([AUTOCONFIGURED], [YesPlease])
153
154 # Directories holding "saner" versions of common or POSIX binaries.
155 AC_ARG_WITH([sane-tool-path],
156 [AS_HELP_STRING(
157 [--with-sane-tool-path=DIR-1[[:DIR-2...:DIR-n]]],
158 [Directories to prepend to PATH in build system and generated scripts])],
159 [if test "$withval" = "no"; then
160 withval=''
161 else
162 AC_MSG_NOTICE([Setting SANE_TOOL_PATH to '$withval'])
163 fi
164 GIT_CONF_SUBST([SANE_TOOL_PATH], [$withval])],
165 [# If the "--with-sane-tool-path" option was not given, don't touch
166 # SANE_TOOL_PATH here, but let defaults in Makefile take care of it.
167 # This should minimize spurious differences in the behaviour of the
168 # Git build system when configure is used w.r.t. when it is not.
169 :])
170
171 ## Site configuration related to programs (before tests)
172 ## --with-PACKAGE[=ARG] and --without-PACKAGE
173 #
174 # Set lib to alternative name of lib directory (e.g. lib64)
175 AC_ARG_WITH([lib],
176 [AS_HELP_STRING([--with-lib=ARG],
177 [ARG specifies alternative name for lib directory])],
178 [if test "$withval" = "no" || test "$withval" = "yes"; then
179 AC_MSG_WARN([You should provide name for --with-lib=ARG])
180 else
181 lib=$withval
182 AC_MSG_NOTICE([Setting lib to '$lib'])
183 GIT_CONF_SUBST([lib])
184 fi])
185
186 if test -z "$lib"; then
187 AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
188 lib=lib
189 fi
190
191 AC_ARG_ENABLE([pthreads],
192 [AS_HELP_STRING([--enable-pthreads=FLAGS],
193 [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
194 [The default if FLAGS is not specified is to try first -pthread]
195 [and then -lpthread.]
196 [--disable-pthreads will disable threading.])],
197 [
198 if test "x$enableval" = "xyes"; then
199 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads])
200 elif test "x$enableval" != "xno"; then
201 PTHREAD_CFLAGS=$enableval
202 AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads])
203 else
204 AC_MSG_NOTICE([POSIX Threads will be disabled.])
205 NO_PTHREADS=YesPlease
206 USER_NOPTHREAD=1
207 fi],
208 [
209 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.])
210 ])
211
212 # Define option to enable JavaScript minification
213 AC_ARG_ENABLE([jsmin],
214 [AS_HELP_STRING([--enable-jsmin=PATH],
215 [PATH is the name of a JavaScript minifier or the absolute path to one.])],
216 [
217 JSMIN=$enableval;
218 AC_MSG_NOTICE([Setting JSMIN to '$JSMIN' to enable JavaScript minifying])
219 GIT_CONF_SUBST([JSMIN])
220 ])
221
222 # Define option to enable CSS minification
223 AC_ARG_ENABLE([cssmin],
224 [AS_HELP_STRING([--enable-cssmin=PATH],
225 [PATH is the name of a CSS minifier or the absolute path to one.])],
226 [
227 CSSMIN=$enableval;
228 AC_MSG_NOTICE([Setting CSSMIN to '$CSSMIN' to enable CSS minifying])
229 GIT_CONF_SUBST([CSSMIN])
230 ])
231
232 ## Site configuration (override autodetection)
233 ## --with-PACKAGE[=ARG] and --without-PACKAGE
234 AC_MSG_NOTICE([CHECKS for site configuration])
235 #
236 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
237 # tests. These tests take up a significant amount of the total test time
238 # but are not needed unless you plan to talk to SVN repos.
239 #
240 # Define PPC_SHA1 environment variable when running make to make use of
241 # a bundled SHA1 routine optimized for PowerPC.
242 #
243 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
244 #
245 # Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
246 # /foo/bar/include and /foo/bar/lib directories.
247 AC_ARG_WITH(openssl,
248 AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
249 AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),
250 GIT_PARSE_WITH([openssl]))
251
252 # Define USE_LIBPCRE if you have and want to use libpcre. Various
253 # commands such as log and grep offer runtime options to use
254 # Perl-compatible regular expressions instead of standard or extended
255 # POSIX regular expressions.
256 #
257 # USE_LIBPCRE is a synonym for USE_LIBPCRE2, define USE_LIBPCRE1
258 # instead if you'd like to use the legacy version 1 of the PCRE
259 # library. Support for version 1 will likely be removed in some future
260 # release of Git, as upstream has all but abandoned it.
261 #
262 # Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in
263 # /foo/bar/include and /foo/bar/lib directories.
264 #
265 AC_ARG_WITH(libpcre,
266 AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre2]),
267 if test "$withval" = "no"; then
268 USE_LIBPCRE2=
269 elif test "$withval" = "yes"; then
270 USE_LIBPCRE2=YesPlease
271 else
272 USE_LIBPCRE2=YesPlease
273 LIBPCREDIR=$withval
274 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
275 dnl USE_LIBPCRE2 can still be modified below, so don't substitute
276 dnl it yet.
277 GIT_CONF_SUBST([LIBPCREDIR])
278 fi)
279
280 AC_ARG_WITH(libpcre1,
281 AS_HELP_STRING([--with-libpcre1],[support Perl-compatible regexes via libpcre1 (default is NO)])
282 AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]),
283 if test "$withval" = "no"; then
284 USE_LIBPCRE1=
285 elif test "$withval" = "yes"; then
286 USE_LIBPCRE1=YesPlease
287 else
288 USE_LIBPCRE1=YesPlease
289 LIBPCREDIR=$withval
290 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
291 dnl USE_LIBPCRE1 can still be modified below, so don't substitute
292 dnl it yet.
293 GIT_CONF_SUBST([LIBPCREDIR])
294 fi)
295
296 AC_ARG_WITH(libpcre2,
297 AS_HELP_STRING([--with-libpcre2],[support Perl-compatible regexes via libpcre2 (default is NO)])
298 AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]),
299 if test -n "$USE_LIBPCRE2"; then
300 AC_MSG_ERROR([Only supply one of --with-libpcre or its synonym --with-libpcre2!])
301 fi
302
303 if test -n "$USE_LIBPCRE1"; then
304 AC_MSG_ERROR([Only supply one of --with-libpcre1 or --with-libpcre2!])
305 fi
306
307 if test "$withval" = "no"; then
308 USE_LIBPCRE2=
309 elif test "$withval" = "yes"; then
310 USE_LIBPCRE2=YesPlease
311 else
312 USE_LIBPCRE2=YesPlease
313 LIBPCREDIR=$withval
314 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
315 dnl USE_LIBPCRE2 can still be modified below, so don't substitute
316 dnl it yet.
317 GIT_CONF_SUBST([LIBPCREDIR])
318 fi)
319 #
320 # Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header.
321 AC_FUNC_ALLOCA
322 case $ac_cv_working_alloca_h in
323 yes) HAVE_ALLOCA_H=YesPlease;;
324 *) HAVE_ALLOCA_H='';;
325 esac
326 GIT_CONF_SUBST([HAVE_ALLOCA_H])
327 #
328 # Define NO_CURL if you do not have curl installed. git-http-pull and
329 # git-http-push are not built, and you cannot use http:// and https://
330 # transports.
331 #
332 # Define CURLDIR=/foo/bar if your curl header and library files are in
333 # /foo/bar/include and /foo/bar/lib directories.
334 AC_ARG_WITH(curl,
335 AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
336 AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
337 GIT_PARSE_WITH(curl))
338 #
339 # Define NO_EXPAT if you do not have expat installed. git-http-push is
340 # not built, and you cannot push using http:// and https:// transports.
341 #
342 # Define EXPATDIR=/foo/bar if your expat header and library files are in
343 # /foo/bar/include and /foo/bar/lib directories.
344 AC_ARG_WITH(expat,
345 AS_HELP_STRING([--with-expat],
346 [support git-push using http:// and https:// transports via WebDAV (default is YES)])
347 AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
348 GIT_PARSE_WITH(expat))
349 #
350 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
351 # installed in /sw, but don't want GIT to link against any libraries
352 # installed there. If defined you may specify your own (or Fink's)
353 # include directories and library directories by defining CFLAGS
354 # and LDFLAGS appropriately.
355 #
356 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
357 # have DarwinPorts installed in /opt/local, but don't want GIT to
358 # link against any libraries installed there. If defined you may
359 # specify your own (or DarwinPort's) include directories and
360 # library directories by defining CFLAGS and LDFLAGS appropriately.
361 #
362 # Define NO_MMAP if you want to avoid mmap.
363 #
364 # Define NO_ICONV if your libc does not properly support iconv.
365 AC_ARG_WITH(iconv,
366 AS_HELP_STRING([--without-iconv],
367 [if your architecture doesn't properly support iconv])
368 AS_HELP_STRING([--with-iconv=PATH],
369 [PATH is prefix for libiconv library and headers])
370 AS_HELP_STRING([],
371 [used only if you need linking with libiconv]),
372 GIT_PARSE_WITH(iconv))
373
374 ## --enable-FEATURE[=ARG] and --disable-FEATURE
375 #
376 # Define USE_NSEC below if you want git to care about sub-second file mtimes
377 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
378 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
379 # randomly break unless your underlying filesystem supports those sub-second
380 # times (my ext3 doesn't).
381 #
382 # Define USE_STDEV below if you want git to care about the underlying device
383 # change being considered an inode change from the update-index perspective.
384
385 #
386 # Allow user to set ETC_GITCONFIG variable
387 GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
388 Use VALUE instead of /etc/gitconfig as the
389 global git configuration file.
390 If VALUE is not fully qualified it will be interpreted
391 as a path relative to the computed prefix at runtime.)
392
393 #
394 # Allow user to set ETC_GITATTRIBUTES variable
395 GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
396 Use VALUE instead of /etc/gitattributes as the
397 global git attributes file.
398 If VALUE is not fully qualified it will be interpreted
399 as a path relative to the computed prefix at runtime.)
400
401 #
402 # Allow user to set the default pager
403 GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
404 Use VALUE as the fall-back pager instead of 'less'.
405 This is used by things like 'git log' when the user
406 does not specify a pager to use through alternate
407 methods. eg: /usr/bin/pager)
408 #
409 # Allow user to set the default editor
410 GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
411 Use VALUE as the fall-back editor instead of 'vi'.
412 This is used by things like 'git commit' when the user
413 does not specify a preferred editor through other
414 methods. eg: /usr/bin/editor)
415
416 #
417 # Define SHELL_PATH to provide path to shell.
418 GIT_ARG_SET_PATH(shell)
419 #
420 # Define PERL_PATH to provide path to Perl.
421 GIT_ARG_SET_PATH(perl)
422 #
423 # Define PYTHON_PATH to provide path to Python.
424 GIT_ARG_SET_PATH(python, allow-without)
425 #
426 # Define ZLIB_PATH to provide path to zlib.
427 GIT_ARG_SET_PATH(zlib)
428 #
429 # Declare the with-tcltk/without-tcltk options.
430 AC_ARG_WITH(tcltk,
431 AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
432 AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
433 AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
434 AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),
435 GIT_PARSE_WITH(tcltk))
436 #
437
438
439 ## Checks for programs.
440 AC_MSG_NOTICE([CHECKS for programs])
441 #
442 AC_PROG_CC([cc gcc])
443 AC_C_INLINE
444 case $ac_cv_c_inline in
445 inline | yes | no) INLINE='';;
446 *) INLINE=$ac_cv_c_inline ;;
447 esac
448 GIT_CONF_SUBST([INLINE])
449
450 # which switch to pass runtime path to dynamic libraries to the linker
451 AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
452 SAVE_LDFLAGS="${LDFLAGS}"
453 LDFLAGS="${SAVE_LDFLAGS} -R /"
454 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
455 LDFLAGS="${SAVE_LDFLAGS}"
456 ])
457 if test "$git_cv_ld_dashr" = "yes"; then
458 CC_LD_DYNPATH=-R
459 else
460 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
461 SAVE_LDFLAGS="${LDFLAGS}"
462 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
463 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
464 LDFLAGS="${SAVE_LDFLAGS}"
465 ])
466 if test "$git_cv_ld_wl_rpath" = "yes"; then
467 CC_LD_DYNPATH=-Wl,-rpath,
468 else
469 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
470 SAVE_LDFLAGS="${LDFLAGS}"
471 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
472 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
473 LDFLAGS="${SAVE_LDFLAGS}"
474 ])
475 if test "$git_cv_ld_rpath" = "yes"; then
476 CC_LD_DYNPATH=-rpath
477 else
478 AC_CACHE_CHECK([if linker supports -Wl,+b,], git_cv_ld_wl_b, [
479 SAVE_LDFLAGS="${LDFLAGS}"
480 LDFLAGS="${SAVE_LDFLAGS} -Wl,+b,/"
481 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_b=yes], [git_cv_ld_wl_b=no])
482 LDFLAGS="${SAVE_LDFLAGS}"
483 ])
484 if test "$git_cv_ld_wl_b" = "yes"; then
485 CC_LD_DYNPATH=-Wl,+b,
486 else
487 CC_LD_DYNPATH=
488 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
489 fi
490 fi
491 fi
492 fi
493 GIT_CONF_SUBST([CC_LD_DYNPATH])
494 #AC_PROG_INSTALL # needs install-sh or install.sh in sources
495 AC_CHECK_TOOLS(AR, [gar ar], :)
496 AC_CHECK_PROGS(TAR, [gtar tar])
497 AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
498 # TCLTK_PATH will be set to some value if we want Tcl/Tk
499 # or will be empty otherwise.
500 if test -n "$NO_TCLTK"; then
501 TCLTK_PATH=
502 else
503 if test "$with_tcltk" = ""; then
504 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
505 TCLTK_PATH=wish
506 elif test "$with_tcltk" = "yes"; then
507 # Tcl/Tk check requested.
508 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
509 else
510 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
511 TCLTK_PATH="$with_tcltk"
512 fi
513 fi
514 GIT_CONF_SUBST([TCLTK_PATH])
515 AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
516 if test -n "$ASCIIDOC"; then
517 AC_MSG_CHECKING([for asciidoc version])
518 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
519 case "${asciidoc_version}" in
520 asciidoc' '8*)
521 AC_MSG_RESULT([${asciidoc_version}])
522 ;;
523 *)
524 AC_MSG_RESULT([${asciidoc_version} (unknown)])
525 ;;
526 esac
527 fi
528
529 if grep -a ascii configure.ac >/dev/null; then
530 AC_MSG_RESULT([Using 'grep -a' for sane_grep])
531 SANE_TEXT_GREP=-a
532 else
533 SANE_TEXT_GREP=
534 fi
535 GIT_CONF_SUBST([SANE_TEXT_GREP])
536
537 ## Checks for libraries.
538 AC_MSG_NOTICE([CHECKS for libraries])
539 #
540 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
541 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
542
543 GIT_STASH_FLAGS($OPENSSLDIR)
544
545 AC_CHECK_LIB([crypto], [SHA1_Init],
546 [NEEDS_SSL_WITH_CRYPTO=],
547 [AC_CHECK_LIB([ssl], [SHA1_Init],
548 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=],
549 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
550
551 GIT_UNSTASH_FLAGS($OPENSSLDIR)
552
553 GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO])
554 GIT_CONF_SUBST([NO_OPENSSL])
555
556 #
557 # Handle the USE_LIBPCRE1 and USE_LIBPCRE2 options potentially set
558 # above.
559 #
560
561 if test -n "$USE_LIBPCRE1"; then
562
563 GIT_STASH_FLAGS($LIBPCREDIR)
564
565 AC_CHECK_LIB([pcre], [pcre_version],
566 [USE_LIBPCRE1=YesPlease],
567 [USE_LIBPCRE1=])
568
569 GIT_UNSTASH_FLAGS($LIBPCREDIR)
570
571 GIT_CONF_SUBST([USE_LIBPCRE1])
572
573 fi
574
575
576 if test -n "$USE_LIBPCRE2"; then
577
578 GIT_STASH_FLAGS($LIBPCREDIR)
579
580 AC_CHECK_LIB([pcre2-8], [pcre2_config_8],
581 [USE_LIBPCRE2=YesPlease],
582 [USE_LIBPCRE2=])
583
584 GIT_UNSTASH_FLAGS($LIBPCREDIR)
585
586 GIT_CONF_SUBST([USE_LIBPCRE2])
587
588 fi
589
590 #
591 # Define NO_CURL if you do not have libcurl installed. git-http-pull and
592 # git-http-push are not built, and you cannot use http:// and https://
593 # transports.
594
595 GIT_STASH_FLAGS($CURLDIR)
596
597 AC_CHECK_LIB([curl], [curl_global_init],
598 [NO_CURL=],
599 [NO_CURL=YesPlease])
600
601 GIT_UNSTASH_FLAGS($CURLDIR)
602
603 GIT_CONF_SUBST([NO_CURL])
604
605 if test -z "$NO_CURL"; then
606
607 AC_CHECK_PROG([CURL_CONFIG], [curl-config],
608 [curl-config],
609 [no])
610
611 if test $CURL_CONFIG != no; then
612 GIT_CONF_SUBST([CURL_CONFIG])
613
614 if test -z "$CURL_CONFIG_OPTS"; then
615 CURL_CONFIG_OPTS="--libs"
616 fi
617
618 CURL_LDFLAGS=$($CURL_CONFIG $CURL_CONFIG_OPTS)
619 AC_MSG_NOTICE([Setting CURL_LDFLAGS to '$CURL_LDFLAGS'])
620 GIT_CONF_SUBST([CURL_LDFLAGS], [$CURL_LDFLAGS])
621 fi
622
623 fi
624
625
626 #
627 # Define NO_EXPAT if you do not have expat installed. git-http-push is
628 # not built, and you cannot push using http:// and https:// transports.
629
630 GIT_STASH_FLAGS($EXPATDIR)
631
632 AC_CHECK_LIB([expat], [XML_ParserCreate],
633 [NO_EXPAT=],
634 [NO_EXPAT=YesPlease])
635
636 GIT_UNSTASH_FLAGS($EXPATDIR)
637
638 GIT_CONF_SUBST([NO_EXPAT])
639
640 #
641 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
642 # some Solaris installations).
643 # Define NO_ICONV if neither libc nor libiconv support iconv.
644
645 if test -z "$NO_ICONV"; then
646
647 GIT_STASH_FLAGS($ICONVDIR)
648
649 AC_DEFUN([ICONVTEST_SRC],
650 [AC_LANG_PROGRAM([#include <iconv.h>],
651 [iconv_open("", "");])])
652
653 if test -n "$ICONVDIR"; then
654 lib_order="-liconv -lc"
655 else
656 lib_order="-lc -liconv"
657 fi
658
659 NO_ICONV=YesPlease
660
661 for l in $lib_order; do
662 if test "$l" = "-liconv"; then
663 NEEDS_LIBICONV=YesPlease
664 else
665 NEEDS_LIBICONV=
666 fi
667
668 old_LIBS="$LIBS"
669 LIBS="$LIBS $l"
670 AC_MSG_CHECKING([for iconv in $l])
671 AC_LINK_IFELSE([ICONVTEST_SRC],
672 [AC_MSG_RESULT([yes])
673 NO_ICONV=
674 break],
675 [AC_MSG_RESULT([no])])
676 LIBS="$old_LIBS"
677 done
678
679 #in case of break
680 LIBS="$old_LIBS"
681
682 GIT_UNSTASH_FLAGS($ICONVDIR)
683
684 GIT_CONF_SUBST([NEEDS_LIBICONV])
685 GIT_CONF_SUBST([NO_ICONV])
686
687 if test -n "$NO_ICONV"; then
688 NEEDS_LIBICONV=
689 fi
690
691 fi
692
693 #
694 # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
695
696 GIT_STASH_FLAGS($ZLIB_PATH)
697
698 AC_DEFUN([ZLIBTEST_SRC], [
699 AC_LANG_PROGRAM([#include <zlib.h>],
700 [deflateBound(0, 0);])])
701 AC_MSG_CHECKING([for deflateBound in -lz])
702 old_LIBS="$LIBS"
703 LIBS="$LIBS -lz"
704 AC_LINK_IFELSE([ZLIBTEST_SRC],
705 [AC_MSG_RESULT([yes])],
706 [AC_MSG_RESULT([no])
707 NO_DEFLATE_BOUND=yes])
708 LIBS="$old_LIBS"
709
710 GIT_UNSTASH_FLAGS($ZLIB_PATH)
711
712 GIT_CONF_SUBST([NO_DEFLATE_BOUND])
713
714 #
715 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
716 # Patrick Mauritz).
717 AC_CHECK_LIB([c], [socket],
718 [NEEDS_SOCKET=],
719 [NEEDS_SOCKET=YesPlease])
720 GIT_CONF_SUBST([NEEDS_SOCKET])
721 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
722
723 #
724 # The next few tests will define NEEDS_RESOLV if linking with
725 # libresolv provides some of the functions we would normally get
726 # from libc.
727 NEEDS_RESOLV=
728 #
729 # Define NO_INET_NTOP if linking with -lresolv is not enough.
730 # Solaris 2.7 in particular hos inet_ntop in -lresolv.
731 NO_INET_NTOP=
732 AC_CHECK_FUNC([inet_ntop],
733 [],
734 [AC_CHECK_LIB([resolv], [inet_ntop],
735 [NEEDS_RESOLV=YesPlease],
736 [NO_INET_NTOP=YesPlease])
737 ])
738 GIT_CONF_SUBST([NO_INET_NTOP])
739 #
740 # Define NO_INET_PTON if linking with -lresolv is not enough.
741 # Solaris 2.7 in particular hos inet_pton in -lresolv.
742 NO_INET_PTON=
743 AC_CHECK_FUNC([inet_pton],
744 [],
745 [AC_CHECK_LIB([resolv], [inet_pton],
746 [NEEDS_RESOLV=YesPlease],
747 [NO_INET_PTON=YesPlease])
748 ])
749 GIT_CONF_SUBST([NO_INET_PTON])
750 #
751 # Define NO_HSTRERROR if linking with -lresolv is not enough.
752 # Solaris 2.6 in particular has no hstrerror, even in -lresolv.
753 NO_HSTRERROR=
754 AC_CHECK_FUNC([hstrerror],
755 [],
756 [AC_CHECK_LIB([resolv], [hstrerror],
757 [NEEDS_RESOLV=YesPlease],
758 [NO_HSTRERROR=YesPlease])
759 ])
760 GIT_CONF_SUBST([NO_HSTRERROR])
761
762 dnl This must go after all the possible places for its initialization,
763 dnl in the AC_CHECK_FUNC invocations above.
764 GIT_CONF_SUBST([NEEDS_RESOLV])
765 #
766 # If any of the above tests determined that -lresolv is needed at
767 # build-time, also set it here for remaining configure-time checks.
768 test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
769
770 AC_CHECK_LIB([c], [basename],
771 [NEEDS_LIBGEN=],
772 [NEEDS_LIBGEN=YesPlease])
773 GIT_CONF_SUBST([NEEDS_LIBGEN])
774 test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
775
776 AC_DEFUN([LIBINTL_SRC], [
777 AC_LANG_PROGRAM([[
778 #include <libintl.h>
779 ]],[[
780 char *msg = gettext("test");
781 ]])])
782
783 AC_MSG_CHECKING([if libc contains libintl])
784 AC_LINK_IFELSE([LIBINTL_SRC],
785 [AC_MSG_RESULT([yes])
786 LIBC_CONTAINS_LIBINTL=YesPlease],
787 [AC_MSG_RESULT([no])
788 LIBC_CONTAINS_LIBINTL=])
789 GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL])
790
791 #
792 # Define NO_GETTEXT if you don't want Git output to be translated.
793 # A translated Git requires GNU libintl or another gettext implementation
794 AC_CHECK_HEADER([libintl.h],
795 [NO_GETTEXT=],
796 [NO_GETTEXT=YesPlease])
797 GIT_CONF_SUBST([NO_GETTEXT])
798
799 if test -z "$NO_GETTEXT"; then
800 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
801 fi
802
803 ## Checks for header files.
804 AC_MSG_NOTICE([CHECKS for header files])
805 #
806 # Define NO_SYS_SELECT_H if you don't have sys/select.h.
807 AC_CHECK_HEADER([sys/select.h],
808 [NO_SYS_SELECT_H=],
809 [NO_SYS_SELECT_H=UnfortunatelyYes])
810 GIT_CONF_SUBST([NO_SYS_SELECT_H])
811 #
812 # Define NO_POLL_H if you don't have poll.h
813 AC_CHECK_HEADER([poll.h],
814 [NO_POLL_H=],
815 [NO_POLL_H=UnfortunatelyYes])
816 GIT_CONF_SUBST([NO_POLL_H])
817 #
818 # Define NO_SYS_POLL_H if you don't have sys/poll.h
819 AC_CHECK_HEADER([sys/poll.h],
820 [NO_SYS_POLL_H=],
821 [NO_SYS_POLL_H=UnfortunatelyYes])
822 GIT_CONF_SUBST([NO_SYS_POLL_H])
823 #
824 # Define NO_INTTYPES_H if you don't have inttypes.h
825 AC_CHECK_HEADER([inttypes.h],
826 [NO_INTTYPES_H=],
827 [NO_INTTYPES_H=UnfortunatelyYes])
828 GIT_CONF_SUBST([NO_INTTYPES_H])
829 #
830 # Define OLD_ICONV if your library has an old iconv(), where the second
831 # (input buffer pointer) parameter is declared with type (const char **).
832 AC_DEFUN([OLDICONVTEST_SRC], [
833 AC_LANG_PROGRAM([[
834 #include <iconv.h>
835
836 extern size_t iconv(iconv_t cd,
837 char **inbuf, size_t *inbytesleft,
838 char **outbuf, size_t *outbytesleft);
839 ]], [])])
840
841 GIT_STASH_FLAGS($ICONVDIR)
842
843 AC_MSG_CHECKING([for old iconv()])
844 AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
845 [AC_MSG_RESULT([no])],
846 [AC_MSG_RESULT([yes])
847 OLD_ICONV=UnfortunatelyYes])
848
849 GIT_UNSTASH_FLAGS($ICONVDIR)
850
851 GIT_CONF_SUBST([OLD_ICONV])
852
853 ## Checks for typedefs, structures, and compiler characteristics.
854 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
855 #
856 TYPE_SOCKLEN_T
857 case $ac_cv_type_socklen_t in
858 yes) SOCKLEN_T='';;
859 *) SOCKLEN_T=$git_cv_socklen_t_equiv;;
860 esac
861 GIT_CONF_SUBST([SOCKLEN_T])
862
863 #
864 # Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval.
865 AC_CHECK_TYPES([struct itimerval],
866 [NO_STRUCT_ITIMERVAL=],
867 [NO_STRUCT_ITIMERVAL=UnfortunatelyYes],
868 [#include <sys/time.h>])
869 GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL])
870 #
871 # Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists.
872 # Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor
873 # stat.st_mtimespec.tv_nsec exists.
874 AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec])
875 AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec])
876 if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then
877 USE_ST_TIMESPEC=YesPlease
878 GIT_CONF_SUBST([USE_ST_TIMESPEC])
879 elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then
880 NO_NSEC=YesPlease
881 GIT_CONF_SUBST([NO_NSEC])
882 fi
883 #
884 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
885 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
886 AC_CHECK_MEMBER(struct dirent.d_type,
887 [NO_D_TYPE_IN_DIRENT=],
888 [NO_D_TYPE_IN_DIRENT=YesPlease],
889 [#include <dirent.h>])
890 GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT])
891 #
892 # Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd
893 # in the C library.
894 AC_CHECK_MEMBER(struct passwd.pw_gecos,
895 [NO_GECOS_IN_PWENT=],
896 [NO_GECOS_IN_PWENT=YesPlease],
897 [#include <pwd.h>])
898 GIT_CONF_SUBST([NO_GECOS_IN_PWENT])
899 #
900 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
901 # sockaddr_storage.
902 AC_CHECK_TYPE(struct sockaddr_storage,
903 [NO_SOCKADDR_STORAGE=],
904 [NO_SOCKADDR_STORAGE=YesPlease],[
905 #include <sys/types.h>
906 #include <sys/socket.h>
907 ])
908 GIT_CONF_SUBST([NO_SOCKADDR_STORAGE])
909 #
910 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
911 AC_CHECK_TYPE([struct addrinfo],[
912 GIT_CHECK_FUNC([getaddrinfo],
913 [NO_IPV6=],
914 [NO_IPV6=YesPlease])
915 ],[NO_IPV6=YesPlease],[
916 #include <sys/types.h>
917 #include <sys/socket.h>
918 #include <netdb.h>
919 ])
920 GIT_CONF_SUBST([NO_IPV6])
921 #
922 # Define NO_REGEX if your C library lacks regex support with REG_STARTEND
923 # feature.
924 AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND],
925 [ac_cv_c_regex_with_reg_startend], [
926 AC_EGREP_CPP(yippeeyeswehaveit,
927 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
928 #include <regex.h>
929 ],
930 [#ifdef REG_STARTEND
931 yippeeyeswehaveit
932 #endif
933 ]),
934 [ac_cv_c_regex_with_reg_startend=yes],
935 [ac_cv_c_regex_with_reg_startend=no])
936 ])
937 if test $ac_cv_c_regex_with_reg_startend = yes; then
938 NO_REGEX=
939 else
940 NO_REGEX=YesPlease
941 fi
942 GIT_CONF_SUBST([NO_REGEX])
943 #
944 # Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
945 # when attempting to read from an fopen'ed directory.
946 AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
947 [ac_cv_fread_reads_directories],
948 [
949 AC_RUN_IFELSE(
950 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
951 [[
952 FILE *f = fopen(".", "r");
953 return f != NULL;]])],
954 [ac_cv_fread_reads_directories=no],
955 [ac_cv_fread_reads_directories=yes])
956 ])
957 if test $ac_cv_fread_reads_directories = yes; then
958 FREAD_READS_DIRECTORIES=UnfortunatelyYes
959 else
960 FREAD_READS_DIRECTORIES=
961 fi
962 GIT_CONF_SUBST([FREAD_READS_DIRECTORIES])
963 #
964 # Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
965 # or vsnprintf() return -1 instead of number of characters which would
966 # have been written to the final string if enough space had been available.
967 AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
968 [ac_cv_snprintf_returns_bogus],
969 [
970 AC_RUN_IFELSE(
971 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
972 #include "stdarg.h"
973
974 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
975 {
976 int ret;
977 va_list ap;
978 va_start(ap, format);
979 ret = vsnprintf(str, maxsize, format, ap);
980 va_end(ap);
981 return ret;
982 }],
983 [[char buf[6];
984 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
985 || strcmp(buf, "12")) return 1;
986 if (snprintf(buf, 3, "%s", "12345") != 5
987 || strcmp(buf, "12")) return 1]])],
988 [ac_cv_snprintf_returns_bogus=no],
989 [ac_cv_snprintf_returns_bogus=yes])
990 ])
991 if test $ac_cv_snprintf_returns_bogus = yes; then
992 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
993 else
994 SNPRINTF_RETURNS_BOGUS=
995 fi
996 GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS])
997 #
998 # Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type
999 # bits in mode values.
1000 AC_CACHE_CHECK([whether the platform uses typical file type bits],
1001 [ac_cv_sane_mode_bits], [
1002 AC_EGREP_CPP(yippeeyeswehaveit,
1003 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1004 [#if S_IFMT == 0170000 && \
1005 S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \
1006 S_IFBLK == 0060000 && S_IFCHR == 0020000 && \
1007 S_IFIFO == 0010000 && S_IFSOCK == 0140000
1008 yippeeyeswehaveit
1009 #endif
1010 ]),
1011 [ac_cv_sane_mode_bits=yes],
1012 [ac_cv_sane_mode_bits=no])
1013 ])
1014 if test $ac_cv_sane_mode_bits = yes; then
1015 NEEDS_MODE_TRANSLATION=
1016 else
1017 NEEDS_MODE_TRANSLATION=UnfortunatelyYes
1018 fi
1019 GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION])
1020
1021
1022 ## Checks for library functions.
1023 ## (in default C library and libraries checked by AC_CHECK_LIB)
1024 AC_MSG_NOTICE([CHECKS for library functions])
1025 #
1026 # Define NO_LIBGEN_H if you don't have libgen.h.
1027 AC_CHECK_HEADER([libgen.h],
1028 [NO_LIBGEN_H=],
1029 [NO_LIBGEN_H=YesPlease])
1030 GIT_CONF_SUBST([NO_LIBGEN_H])
1031 #
1032 # Define HAVE_PATHS_H if you have paths.h.
1033 AC_CHECK_HEADER([paths.h],
1034 [HAVE_PATHS_H=YesPlease],
1035 [HAVE_PATHS_H=])
1036 GIT_CONF_SUBST([HAVE_PATHS_H])
1037 #
1038 # Define HAVE_LIBCHARSET_H if have libcharset.h
1039 AC_CHECK_HEADER([libcharset.h],
1040 [HAVE_LIBCHARSET_H=YesPlease],
1041 [HAVE_LIBCHARSET_H=])
1042 GIT_CONF_SUBST([HAVE_LIBCHARSET_H])
1043 #
1044 # Define HAVE_STRINGS_H if you have strings.h
1045 AC_CHECK_HEADER([strings.h],
1046 [HAVE_STRINGS_H=YesPlease],
1047 [HAVE_STRINGS_H=])
1048 GIT_CONF_SUBST([HAVE_STRINGS_H])
1049 # Define CHARSET_LIB if libiconv does not export the locale_charset symbol
1050 # and libcharset does
1051 CHARSET_LIB=
1052 AC_CHECK_LIB([iconv], [locale_charset],
1053 [CHARSET_LIB=-liconv],
1054 [AC_CHECK_LIB([charset], [locale_charset],
1055 [CHARSET_LIB=-lcharset])])
1056 GIT_CONF_SUBST([CHARSET_LIB])
1057 #
1058 # Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.
1059 GIT_CHECK_FUNC(clock_gettime,
1060 [HAVE_CLOCK_GETTIME=YesPlease],
1061 [HAVE_CLOCK_GETTIME=])
1062 GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])
1063
1064 AC_DEFUN([CLOCK_MONOTONIC_SRC], [
1065 AC_LANG_PROGRAM([[
1066 #include <time.h>
1067 clockid_t id = CLOCK_MONOTONIC;
1068 ]])])
1069
1070 #
1071 # Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.
1072 AC_MSG_CHECKING([for CLOCK_MONOTONIC])
1073 AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],
1074 [AC_MSG_RESULT([yes])
1075 HAVE_CLOCK_MONOTONIC=YesPlease],
1076 [AC_MSG_RESULT([no])
1077 HAVE_CLOCK_MONOTONIC=])
1078 GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])
1079 #
1080 # Define NO_SETITIMER if you don't have setitimer.
1081 GIT_CHECK_FUNC(setitimer,
1082 [NO_SETITIMER=],
1083 [NO_SETITIMER=YesPlease])
1084 GIT_CONF_SUBST([NO_SETITIMER])
1085 #
1086 # Define NO_STRCASESTR if you don't have strcasestr.
1087 GIT_CHECK_FUNC(strcasestr,
1088 [NO_STRCASESTR=],
1089 [NO_STRCASESTR=YesPlease])
1090 GIT_CONF_SUBST([NO_STRCASESTR])
1091 #
1092 # Define NO_MEMMEM if you don't have memmem.
1093 GIT_CHECK_FUNC(memmem,
1094 [NO_MEMMEM=],
1095 [NO_MEMMEM=YesPlease])
1096 GIT_CONF_SUBST([NO_MEMMEM])
1097 #
1098 # Define NO_STRLCPY if you don't have strlcpy.
1099 GIT_CHECK_FUNC(strlcpy,
1100 [NO_STRLCPY=],
1101 [NO_STRLCPY=YesPlease])
1102 GIT_CONF_SUBST([NO_STRLCPY])
1103 #
1104 # Define NO_UINTMAX_T if your platform does not have uintmax_t
1105 AC_CHECK_TYPE(uintmax_t,
1106 [NO_UINTMAX_T=],
1107 [NO_UINTMAX_T=YesPlease],[
1108 #include <inttypes.h>
1109 ])
1110 GIT_CONF_SUBST([NO_UINTMAX_T])
1111 #
1112 # Define NO_STRTOUMAX if you don't have strtoumax in the C library.
1113 GIT_CHECK_FUNC(strtoumax,
1114 [NO_STRTOUMAX=],
1115 [NO_STRTOUMAX=YesPlease])
1116 GIT_CONF_SUBST([NO_STRTOUMAX])
1117 #
1118 # Define NO_SETENV if you don't have setenv in the C library.
1119 GIT_CHECK_FUNC(setenv,
1120 [NO_SETENV=],
1121 [NO_SETENV=YesPlease])
1122 GIT_CONF_SUBST([NO_SETENV])
1123 #
1124 # Define NO_UNSETENV if you don't have unsetenv in the C library.
1125 GIT_CHECK_FUNC(unsetenv,
1126 [NO_UNSETENV=],
1127 [NO_UNSETENV=YesPlease])
1128 GIT_CONF_SUBST([NO_UNSETENV])
1129 #
1130 # Define NO_MKDTEMP if you don't have mkdtemp in the C library.
1131 GIT_CHECK_FUNC(mkdtemp,
1132 [NO_MKDTEMP=],
1133 [NO_MKDTEMP=YesPlease])
1134 GIT_CONF_SUBST([NO_MKDTEMP])
1135 #
1136 # Define NO_INITGROUPS if you don't have initgroups in the C library.
1137 GIT_CHECK_FUNC(initgroups,
1138 [NO_INITGROUPS=],
1139 [NO_INITGROUPS=YesPlease])
1140 GIT_CONF_SUBST([NO_INITGROUPS])
1141 #
1142 # Define HAVE_GETDELIM if you have getdelim in the C library.
1143 GIT_CHECK_FUNC(getdelim,
1144 [HAVE_GETDELIM=YesPlease],
1145 [HAVE_GETDELIM=])
1146 GIT_CONF_SUBST([HAVE_GETDELIM])
1147 #
1148 #
1149 # Define NO_MMAP if you want to avoid mmap.
1150 #
1151 # Define NO_ICONV if your libc does not properly support iconv.
1152
1153 AC_DEFUN([BSD_SYSCTL_SRC], [
1154 AC_LANG_PROGRAM([[
1155 #include <stddef.h>
1156 #include <sys/types.h>
1157 #include <sys/sysctl.h>
1158 ]],[[
1159 int val, mib[2];
1160 size_t len;
1161 mib[0] = CTL_HW;
1162 mib[1] = 1;
1163 len = sizeof(val);
1164 return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;
1165 ]])])
1166
1167 #
1168 # Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.
1169 AC_MSG_CHECKING([for BSD sysctl])
1170 AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],
1171 [AC_MSG_RESULT([yes])
1172 HAVE_BSD_SYSCTL=YesPlease],
1173 [AC_MSG_RESULT([no])
1174 HAVE_BSD_SYSCTL=])
1175 GIT_CONF_SUBST([HAVE_BSD_SYSCTL])
1176
1177 ## Other checks.
1178 # Define USE_PIC if you need the main git objects to be built with -fPIC
1179 # in order to build and link perl/Git.so. x86-64 seems to need this.
1180 #
1181 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
1182 # Enable it on Windows. By default, symrefs are still used.
1183 #
1184 # Define NO_PTHREADS if we do not have pthreads.
1185 #
1186 # Define PTHREAD_LIBS to the linker flag used for Pthread support.
1187 AC_DEFUN([PTHREADTEST_SRC], [
1188 AC_LANG_PROGRAM([[
1189 #include <pthread.h>
1190 static void *noop(void *ignore) { return ignore; }
1191 ]], [[
1192 pthread_mutex_t test_mutex;
1193 pthread_key_t test_key;
1194 pthread_t th;
1195 int retcode = 0;
1196 void *ret = (void *)0;
1197 retcode |= pthread_key_create(&test_key, (void *)0);
1198 retcode |= pthread_mutex_init(&test_mutex,(void *)0);
1199 retcode |= pthread_mutex_lock(&test_mutex);
1200 retcode |= pthread_mutex_unlock(&test_mutex);
1201 retcode |= pthread_create(&th, ret, noop, ret);
1202 retcode |= pthread_join(th, &ret);
1203 return retcode;
1204 ]])])
1205
1206 dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
1207 dnl [[#include <pthread.h>]],
1208 dnl [[pthread_mutex_t test_mutex;]]
1209 dnl )])
1210
1211 NO_PTHREADS=UnfortunatelyYes
1212 PTHREAD_LIBS=
1213
1214 if test -n "$USER_NOPTHREAD"; then
1215 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1216 # handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1217 # -D_REENTRANT' or some such.
1218 elif test -z "$PTHREAD_CFLAGS"; then
1219 threads_found=no
1220 # Attempt to compile and link some code using pthreads to determine
1221 # required linker flags. The order is somewhat important here: We
1222 # first try it without any extra flags, to catch systems where
1223 # pthreads are part of the C library, then go on testing various other
1224 # flags. We do so to avoid false positives. For example, on Mac OS X
1225 # pthreads are part of the C library; moreover, the compiler allows us
1226 # to add "-mt" to the CFLAGS (although it will do nothing except
1227 # trigger a warning about an unused flag). Hence if we checked for
1228 # "-mt" before "" we would end up picking it. But unfortunately this
1229 # would then trigger compiler warnings on every single file we compile.
1230 for opt in "" -mt -pthread -lpthread; do
1231 old_CFLAGS="$CFLAGS"
1232 old_LIBS="$LIBS"
1233 case "$opt" in
1234 -l*) LIBS="$opt $LIBS" ;;
1235 *) CFLAGS="$opt $CFLAGS" ;;
1236 esac
1237
1238 AC_MSG_CHECKING([for POSIX Threads with '$opt'])
1239 AC_LINK_IFELSE([PTHREADTEST_SRC],
1240 [AC_MSG_RESULT([yes])
1241 NO_PTHREADS=
1242 PTHREAD_LIBS="$opt"
1243 PTHREAD_CFLAGS="$opt"
1244 threads_found=yes
1245 break
1246 ],
1247 [AC_MSG_RESULT([no])])
1248 CFLAGS="$old_CFLAGS"
1249 LIBS="$old_LIBS"
1250 done
1251 if test $threads_found != yes; then
1252 AC_CHECK_LIB([pthread], [pthread_create],
1253 [PTHREAD_LIBS="-lpthread"],
1254 [NO_PTHREADS=UnfortunatelyYes])
1255 fi
1256 else
1257 old_CFLAGS="$CFLAGS"
1258 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1259 AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])
1260 AC_LINK_IFELSE([PTHREADTEST_SRC],
1261 [AC_MSG_RESULT([yes])
1262 NO_PTHREADS=
1263 PTHREAD_LIBS="$PTHREAD_CFLAGS"
1264 ],
1265 [AC_MSG_RESULT([no])])
1266
1267 CFLAGS="$old_CFLAGS"
1268 fi
1269
1270 CFLAGS="$old_CFLAGS"
1271
1272 GIT_CONF_SUBST([PTHREAD_CFLAGS])
1273 GIT_CONF_SUBST([PTHREAD_LIBS])
1274 GIT_CONF_SUBST([NO_PTHREADS])
1275
1276 ## Output files
1277 AC_CONFIG_FILES(["${config_file}":"${config_in}"])
1278 AC_OUTPUT