1 dnl ---------------------------------------------------------------------------
3 dnl Macros for configure.in for wxWindows by Robert Roebling, Phil Blecker,
4 dnl Vadim Zeitlin and Ron Lee
6 dnl This script is under the wxWindows licence.
9 dnl ---------------------------------------------------------------------------
12 dnl ===========================================================================
13 dnl Objective-C(++) related macros
14 dnl ===========================================================================
15 m4_define([AC_WX_LANG_OBJECTIVEC],
20 m4_define([AC_WX_LANG_OBJECTIVECPLUSPLUS],
25 dnl ===========================================================================
26 dnl macros to find a file in the list of include/lib paths
27 dnl ===========================================================================
29 dnl ---------------------------------------------------------------------------
30 dnl call WX_PATH_FIND_INCLUDES(search path, header name), sets ac_find_includes
31 dnl to the full name of the file that was found or leaves it empty if not found
32 dnl ---------------------------------------------------------------------------
33 AC_DEFUN([WX_PATH_FIND_INCLUDES],
36 for ac_dir in $1 /usr/include
38 if test -f "$ac_dir/$2"; then
39 ac_find_includes=$ac_dir
45 dnl ---------------------------------------------------------------------------
46 dnl call WX_PATH_FIND_LIBRARIES(search path, lib name), sets ac_find_libraries
47 dnl to the full name of the file that was found or leaves it empty if not found
48 dnl ---------------------------------------------------------------------------
49 AC_DEFUN([WX_PATH_FIND_LIBRARIES],
54 for ac_extension in a so sl dylib dll.a; do
55 if test -f "$ac_dir/lib$2.$ac_extension"; then
56 ac_find_libraries=$ac_dir
63 dnl ---------------------------------------------------------------------------
64 dnl return list of standard library paths
65 dnl ---------------------------------------------------------------------------
66 dnl return all default locations:
67 dnl - /usr/lib: standard
68 dnl - /usr/lib32: n32 ABI on IRIX
69 dnl - /usr/lib64: n64 ABI on IRIX
70 dnl - /usr/lib/64: 64 bit ABI on Solaris and Linux x86-64
72 dnl NB: if any of directories in the list is not a subdir of /usr, code setting
73 dnl wx_cv_std_libpath needs to be updated
74 AC_DEFUN([WX_STD_LIBPATH], [/usr/lib /usr/lib32 /usr/lib/64 /usr/lib64])
76 dnl ---------------------------------------------------------------------------
77 dnl Path to include, already defined
78 dnl ---------------------------------------------------------------------------
79 AC_DEFUN([WX_INCLUDE_PATH_EXIST],
81 dnl never add -I/usr/include to the CPPFLAGS
82 if test "x$1" = "x/usr/include"; then
85 echo "$2" | grep "\-I$1" > /dev/null
87 if test $result = 0; then
90 ac_path_to_include=" -I$1"
95 dnl ---------------------------------------------------------------------------
96 dnl Usage: WX_LINK_PATH_EXIST(path, libpath)
98 dnl Set ac_path_to_link to nothing if path is already in libpath, or to -Lpath
99 dnl if it is not, so that libpath can be set to "$libpath$ac_path_to_link"
100 dnl after calling this function
101 dnl ---------------------------------------------------------------------------
102 AC_DEFUN([WX_LINK_PATH_EXIST],
104 dnl never add -L/usr/libXXX explicitly to libpath
105 if test "$1" = "default location"; then
108 echo "$2" | grep "\-L$1" > /dev/null
110 if test $result = 0; then
113 ac_path_to_link=" -L$1"
118 dnl ---------------------------------------------------------------------------
119 dnl Usage: WX_FIND_LIB(search-path, lib-name, [lib-function to test])
121 dnl Tests in a variety of ways for the presence of lib-name
123 dnl On success, returns any novel path found in ac_find_libraries; else "std"
124 dnl and any cflags in ac_find_cflags
125 dnl On failure, ac_find_libraries will be empty
126 dnl ---------------------------------------------------------------------------
127 AC_DEFUN([WX_FIND_LIB],
131 dnl Try with pkg-config first. It requires its lib-name parameter lowercase
132 fl_pkgname=`echo "$2" | tr [[:upper:]] [[:lower:]]`
133 dnl suppress PKG_PROG_PKG_CONFIG output; we don't want to keep seeing it
134 PKG_PROG_PKG_CONFIG() AS_MESSAGE_FD> /dev/null
135 PKG_CHECK_MODULES([$2], [$fl_pkgname],
137 dnl Start by assuming there are no novel lib paths
138 ac_find_libraries="std"
140 dnl A simple copy of the internal vars $2_CFLAGS $2_LIBS doesn't work
143 dnl TODO: When we stop being autoconf 2.61 compatible, the next 2 lines
145 dnl AS_VAR_COPY([ac_find_cflags], [$2_CFLAGS])
146 dnl AS_VAR_COPY([fl_libs], [$2_LIBS])
147 eval ac_find_cflags=\$$2_CFLAGS
148 eval fl_libs=\$$2_LIBS
150 dnl fl_libs may now contain -Lfoopath -lfoo (only non-standard paths are
151 dnl added) We only want the path bit, not the lib names
152 for fl_path in $fl_libs
154 if test `echo "$fl_path" | cut -c 1-2` = "-L"; then
155 dnl there shouldn't be >1 novel path
156 dnl return it without the -L, ready for WX_LINK_PATH_EXIST
157 ac_find_libraries=`echo "$fl_path" | cut -c 3-`
162 if test "x$ac_find_libraries" = "x"; then
163 dnl Next with AC_CHECK_LIB, if a test function was provided
164 if test "x$3" != "x"; then
165 AC_CHECK_LIB([$2], [$3], [ac_find_libraries="std"])
169 if test "x$ac_find_libraries" = "x"; then
170 dnl Finally try the search path
171 dnl Output a message again, as AC_CHECK_LIB will just have said "no"
172 AC_MSG_CHECKING([elsewhere])
173 WX_PATH_FIND_LIBRARIES([$1],[$2])
174 if test "x$ac_find_libraries" != "x"; then
183 dnl ===========================================================================
184 dnl C++ features test
185 dnl ===========================================================================
187 dnl ---------------------------------------------------------------------------
188 dnl WX_CPP_NEW_HEADERS checks whether the compiler has "new" <iostream> header
189 dnl or only the old <iostream.h> one - it may be generally assumed that if
190 dnl <iostream> exists, the other "new" headers (without .h) exist too.
192 dnl call WX_CPP_NEW_HEADERS(action-if-true, action-if-false)
193 dnl ---------------------------------------------------------------------------
195 AC_DEFUN([WX_CPP_NEW_HEADERS],
200 AC_CHECK_HEADERS([iostream],,, [ ])
202 if test "$ac_cv_header_iostream" = "yes" ; then
203 ifelse([$1], , :, [$1])
205 ifelse([$2], , :, [$2])
211 dnl ---------------------------------------------------------------------------
212 dnl WX_CPP_EXPLICIT checks whether the C++ compiler support the explicit
213 dnl keyword and defines HAVE_EXPLICIT if this is the case
214 dnl ---------------------------------------------------------------------------
216 AC_DEFUN([WX_CPP_EXPLICIT],
218 AC_CACHE_CHECK([if C++ compiler supports the explicit keyword],
224 dnl do the test in 2 steps: first check that the compiler knows about the
225 dnl explicit keyword at all and then verify that it really honours it
228 class Foo { public: explicit Foo(int) {} };
236 class Foo { public: explicit Foo(int) {} };
237 static void TakeFoo(const Foo& foo) { }
253 if test "$wx_cv_explicit" = "yes"; then
254 AC_DEFINE(HAVE_EXPLICIT)
258 dnl ---------------------------------------------------------------------------
259 dnl WX_CHECK_FUNCS(FUNCTIONS...,
260 dnl [ACTION-IF-FOUND],
261 dnl [ACTION-IF-NOT-FOUND],
262 dnl [EXTRA-DEFINES-AND-INCLUDES],
263 dnl [EXTRA-TEST-CODE])
265 dnl Checks that the functions listed in FUNCTIONS exist in the headers and the
266 dnl libs. For each function, if it is found then defines 'HAVE_FUNCTION' and
267 dnl executes ACTION-IF-FOUND, otherwise executes ACTION-IF-NOT-FOUND.
269 dnl The code from EXTRA-DEFINES-AND-INCLUDES is inserted into the test before
270 dnl the default headers are included, and EXTRA-TEST-CODE is inserted into
271 dnl the main() function after the default test for existence.
274 dnl # the simple case
275 dnl WX_CHECK_FUNCS(stat)
276 dnl # use break to finish the loop early
277 dnl WX_CHECK_FUNCS(mkstemp mktemp, break)
279 dnl WX_CHECK_FUNCS(strtok_r, [], [], [#define _RREENTRANT])
281 dnl WX_CHECK_FUNCS(swprintf, [], [], [#include <wchar.h>])
282 dnl # checking the signature with extra test code
283 dnl WX_CHECK_FUNCS(gettimeofday, [], [], [#include <sys/time.h>]
284 dnl [struct timeval tv; struct timezone tz; gettimeofday(&tv, &tz)])
285 dnl ---------------------------------------------------------------------------
287 AC_DEFUN([WX_CHECK_FUNCS],
293 [wx_cv_func_$wx_func],
309 [eval wx_cv_func_$wx_func=yes],
310 [eval wx_cv_func_$wx_func=no])
313 if eval test \$wx_cv_func_$wx_func = yes
315 AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$wx_func]))
324 dnl ---------------------------------------------------------------------------
325 dnl a slightly better AC_C_BIGENDIAN macro which allows cross-compiling
326 dnl ---------------------------------------------------------------------------
328 AC_DEFUN([WX_C_BIGENDIAN],
329 [AC_CACHE_CHECK([whether byte ordering is bigendian], ac_cv_c_bigendian,
330 [ac_cv_c_bigendian=unknown
331 # See if sys/param.h defines the BYTE_ORDER macro.
332 AC_TRY_COMPILE([#include <sys/types.h>
333 #include <sys/param.h>], [
334 #if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
336 #endif], [# It does; now see whether it defined to BIG_ENDIAN or not.
337 AC_TRY_COMPILE([#include <sys/types.h>
338 #include <sys/param.h>], [
339 #if BYTE_ORDER != BIG_ENDIAN
341 #endif], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)])
342 if test $ac_cv_c_bigendian = unknown; then
343 AC_TRY_RUN([main () {
344 /* Are we little or big endian? From Harbison&Steele. */
348 char c[sizeof (long)];
351 exit (u.c[sizeof (long) - 1] == 1);
352 }], [ac_cv_c_bigendian=no], [ac_cv_c_bigendian=yes], [ac_cv_c_bigendian=unknown])
354 if test $ac_cv_c_bigendian = unknown; then
355 AC_MSG_WARN([Assuming little-endian target machine - this may be overridden by adding the line "ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}" to config.cache file])
357 if test $ac_cv_c_bigendian = yes; then
358 AC_DEFINE(WORDS_BIGENDIAN)
362 dnl ---------------------------------------------------------------------------
363 dnl override AC_ARG_ENABLE/WITH to handle options defaults
364 dnl ---------------------------------------------------------------------------
366 dnl this macro checks for a three-valued command line --with argument:
367 dnl possible arguments are 'yes', 'no', 'sys', or 'builtin'
368 dnl usage: WX_ARG_SYS_WITH(option, helpmessage, variable-name)
370 dnl the default value (used if the option is not specified at all) is the value
371 dnl of wxUSE_ALL_FEATURES (which is "yes" by default but can be changed by
372 dnl giving configure --disable-all-features option)
373 AC_DEFUN([WX_ARG_SYS_WITH],
375 AC_MSG_CHECKING([for --with-$1])
376 AC_ARG_WITH($1, [$2],
378 if test "$withval" = yes; then
379 AS_TR_SH(wx_cv_use_$1)='$3=yes'
380 elif test "$withval" = no; then
381 AS_TR_SH(wx_cv_use_$1)='$3=no'
382 elif test "$withval" = sys; then
383 AS_TR_SH(wx_cv_use_$1)='$3=sys'
384 elif test "$withval" = builtin; then
385 AS_TR_SH(wx_cv_use_$1)='$3=builtin'
387 AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin])
391 AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$wxUSE_ALL_FEATURES}"
394 eval "$AS_TR_SH(wx_cv_use_$1)"
396 if test "$$3" = yes; then
398 elif test "$$3" = no; then
400 elif test "$$3" = sys; then
401 AC_MSG_RESULT([system version])
402 elif test "$$3" = builtin; then
403 AC_MSG_RESULT([builtin version])
405 AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin])
409 dnl this macro simply checks for a command line argument
410 dnl usage: WX_ARG_WITH(option, helpmessage, variable-name, [withstring])
411 AC_DEFUN([WX_ARG_WITH],
414 defaultval=$wxUSE_ALL_FEATURES
415 if test -z "$defaultval"; then
416 if test x"$withstring" = xwithout; then
422 AC_MSG_CHECKING([for --${withstring:-with}-$1])
423 AC_ARG_WITH($1, [$2],
425 if test "$withval" = yes; then
426 AS_TR_SH(wx_cv_use_$1)='$3=yes'
428 AS_TR_SH(wx_cv_use_$1)='$3=no'
432 AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$defaultval}"
435 eval "$AS_TR_SH(wx_cv_use_$1)"
437 if test x"$withstring" = xwithout; then
438 if test $$3 = yes; then
447 AC_MSG_RESULT($result)
450 dnl same as WX_ARG_WITH but makes it clear that the option is enabled by default
451 AC_DEFUN([WX_ARG_WITHOUT], [WX_ARG_WITH($1, [$2], $3, without)])
453 dnl like WX_ARG_WITH but uses AC_ARG_ENABLE instead of AC_ARG_WITH
454 dnl usage: WX_ARG_ENABLE(option, helpmessage, var, [enablestring], [default])
456 dnl enablestring can be omitted or a literal string "disable" and allows to
457 dnl show "checking for --disable-foo" message when running configure instead of
458 dnl the default "checking for --enable-foo" one whih is useful for the options
459 dnl enabled by default
461 dnl the "default" argument can be omitted or contain the default value to use
462 dnl for the option if it's unspecified
463 AC_DEFUN([WX_ARG_ENABLE],
467 if test -z "$defaultval"; then
468 if test x"$enablestring" = xdisable; then
475 AC_MSG_CHECKING([for --${enablestring:-enable}-$1])
476 AC_ARG_ENABLE($1, [$2],
478 if test "$enableval" = yes; then
479 AS_TR_SH(wx_cv_use_$1)='$3=yes'
481 AS_TR_SH(wx_cv_use_$1)='$3=no'
485 AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$defaultval}"
488 eval "$AS_TR_SH(wx_cv_use_$1)"
490 if test x"$enablestring" = xdisable; then
491 if test $$3 = no; then
500 AC_MSG_RESULT($result)
503 dnl the same as WX_ARG_ENABLE but makes it more clear that the option is
504 dnl enabled by default
505 AC_DEFUN([WX_ARG_DISABLE], [WX_ARG_ENABLE($1, [$2], $3, disable)])
507 dnl same as WX_ARG_ENABLE but defaults to wxUSE_ALL_FEATURES instead of "yes"
508 AC_DEFUN([WX_ARG_FEATURE], [WX_ARG_ENABLE($1, [$2], $3,, $wxUSE_ALL_FEATURES)])
510 dnl Like WX_ARG_ENABLE but accepts a parameter.
513 dnl WX_ARG_ENABLE_PARAM(option, helpmessage, variable-name, enablestring)
516 dnl WX_ARG_ENABLE_PARAM(foo, [[ --enable-foo[=bar] use foo]], wxUSE_FOO)
518 dnl --enable-foo wxUSE_FOO=yes
519 dnl --disable-foo wxUSE_FOO=no
520 dnl --enable-foo=bar wxUSE_FOO=bar
521 dnl <not given> wxUSE_FOO=$DEFAULT_wxUSE_FOO
523 AC_DEFUN([WX_ARG_ENABLE_PARAM],
526 AC_MSG_CHECKING([for --${enablestring:-enable}-$1])
527 AC_ARG_ENABLE($1, [$2],
529 wx_cv_use_$1="$3='$enableval'"
532 wx_cv_use_$1='$3='$DEFAULT_$3
540 dnl ===========================================================================
541 dnl Linker features test
542 dnl ===========================================================================
544 dnl ---------------------------------------------------------------------------
545 dnl WX_VERSIONED_SYMBOLS checks whether the linker can create versioned
546 dnl symbols. If it can, sets LDFLAGS_VERSIONING to $CXX flags needed to use
547 dnl version script file named versionfile
549 dnl call WX_VERSIONED_SYMBOLS(versionfile)
550 dnl ---------------------------------------------------------------------------
551 AC_DEFUN([WX_VERSIONED_SYMBOLS],
554 *-*-cygwin* | *-*-mingw* )
555 dnl although ld does support version script option on these
556 dnl platforms, it doesn't make much sense to use it under Win32
557 dnl and, moreover, this breaks linking because of a bug in handling
558 dnl paths in -Wl,--version-script,path option (if we ever do need
559 dnl to use it for cygwin/mingw32, keep in mind that replacing last
560 dnl comma with the equal sign works) so
561 dnl simply disable it
562 wx_cv_version_script=no
566 AC_CACHE_CHECK([if the linker accepts --version-script], wx_cv_version_script,
568 echo "VER_1 { *; };" >conftest.sym
569 echo "int main() { return 0; }" >conftest.cpp
572 $CXX -o conftest.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
573 -Wl,--version-script,conftest.sym >/dev/null 2>conftest.stderr]) ; then
574 if test -s conftest.stderr ; then
575 wx_cv_version_script=no
577 wx_cv_version_script=yes
580 wx_cv_version_script=no
583 dnl There's a problem in some old linkers with --version-script that
584 dnl can cause linking to fail when you have objects with vtables in
585 dnl libs 3 deep. This is known to happen in netbsd and openbsd with
588 dnl To test for this we need to make some shared libs and
589 dnl unfortunately we can't be sure of the right way to do that. If the
590 dnl first two compiles don't succeed then it looks like the test isn't
591 dnl working and the result is ignored, but if OTOH the first two
592 dnl succeed but the third does not then the bug has been detected and
593 dnl the --version-script flag is dropped.
594 if test $wx_cv_version_script = yes
596 echo "struct B { virtual ~B() { } }; \
597 struct D : public B { }; \
598 void F() { D d; }" > conftest.cpp
601 $CXX -shared -fPIC -o conftest1.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
602 -Wl,--version-script,conftest.sym >/dev/null 2>/dev/null]) &&
604 $CXX -shared -fPIC -o conftest2.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
605 -Wl,--version-script,conftest.sym conftest1.output >/dev/null 2>/dev/null])
608 $CXX -shared -fPIC -o conftest3.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp
609 -Wl,--version-script,conftest.sym conftest2.output conftest1.output >/dev/null 2>/dev/null])
611 wx_cv_version_script=yes
613 wx_cv_version_script=no
618 rm -f conftest.output conftest.stderr conftest.sym conftest.cpp
619 rm -f conftest1.output conftest2.output conftest3.output
622 if test $wx_cv_version_script = yes ; then
623 LDFLAGS_VERSIONING="-Wl,--version-script,$1"
630 dnl ===========================================================================
631 dnl "3rd party" macros included here because they are not widely available
632 dnl ===========================================================================
634 dnl ---------------------------------------------------------------------------
635 dnl test for availability of iconv()
636 dnl ---------------------------------------------------------------------------
638 dnl From Bruno Haible.
642 dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
643 dnl those with the standalone portable GNU libiconv installed).
645 AC_ARG_WITH([libiconv-prefix],
646 [ --with-libiconv-prefix=DIR search for libiconv in DIR/include and DIR/lib], [
647 for dir in `echo "$withval" | tr : ' '`; do
648 if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi
649 if test -d $dir/lib; then LDFLAGS="$LDFLAGS -L$dir/lib"; fi
653 AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
654 am_cv_func_iconv="no, consider installing GNU libiconv"
656 AC_TRY_LINK([#include <stdlib.h>
658 [iconv_t cd = iconv_open("","");
659 iconv(cd,NULL,NULL,NULL,NULL);
661 am_cv_func_iconv=yes)
662 if test "$am_cv_func_iconv" != yes; then
665 AC_TRY_LINK([#include <stdlib.h>
667 [iconv_t cd = iconv_open("","");
668 iconv(cd,NULL,NULL,NULL,NULL);
671 am_cv_func_iconv=yes)
675 if test "$am_cv_func_iconv" = yes; then
676 AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
677 AC_CACHE_CHECK([if iconv needs const], wx_cv_func_iconv_const,
685 #if defined(__STDC__) || defined(__cplusplus)
686 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
692 wx_cv_func_iconv_const="no",
693 wx_cv_func_iconv_const="yes"
698 if test "x$wx_cv_func_iconv_const" = "xyes"; then
702 AC_DEFINE_UNQUOTED(ICONV_CONST, $iconv_const,
703 [Define as const if the declaration of iconv() needs const.])
706 if test "$am_cv_lib_iconv" = yes; then
712 dnl ---------------------------------------------------------------------------
713 dnl AC_SYS_LARGEFILE (partly based on the code from autoconf 2.5x)
714 dnl ---------------------------------------------------------------------------
716 dnl WX_SYS_LARGEFILE_TEST
718 dnl NB: original autoconf test was checking if compiler supported 6 bit off_t
719 dnl arithmetic properly but this failed miserably with gcc under Linux
720 dnl whereas the system still supports 64 bit files, so now simply check
721 dnl that off_t is big enough
722 define(WX_SYS_LARGEFILE_TEST,
724 unsigned int field: sizeof(off_t) == 8;
729 dnl WX_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE, CACHE-VAR)
730 define(WX_SYS_LARGEFILE_MACRO_VALUE,
732 AC_CACHE_CHECK([for $1 value needed for large files], [$3],
734 AC_TRY_COMPILE([#define $1 $2
735 #include <sys/types.h>],
736 WX_SYS_LARGEFILE_TEST,
742 if test "$$3" != no; then
744 AC_DEFINE_UNQUOTED([$1], [$$3])
751 dnl By default, many hosts won't let programs access large files;
752 dnl one must use special compiler options to get large-file access to work.
753 dnl For more details about this brain damage please see:
754 dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html
755 AC_DEFUN([AC_SYS_LARGEFILE],
756 [AC_ARG_ENABLE(largefile,
757 [ --disable-largefile omit support for large files])
758 if test "$enable_largefile" != no; then
759 dnl _FILE_OFFSET_BITS==64 is needed for Linux, Solaris, ...
760 dnl _LARGE_FILES -- for AIX
762 WX_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64, ac_cv_sys_file_offset_bits)
763 if test "x$wx_largefile" != "xyes"; then
764 WX_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1, ac_cv_sys_large_files)
767 AC_MSG_CHECKING(if large file support is available)
768 if test "x$wx_largefile" = "xyes"; then
769 AC_DEFINE(HAVE_LARGEFILE_SUPPORT)
771 AC_MSG_RESULT($wx_largefile)