dnl --------------------------------------------------------------------------- dnl dnl Macros for configure.in for wxWindows by Robert Roebling, Phil Blecker, dnl Vadim Zeitlin and Ron Lee dnl dnl This script is under the wxWindows licence. dnl --------------------------------------------------------------------------- dnl =========================================================================== dnl Objective-C(++) related macros dnl =========================================================================== m4_define([AC_WX_LANG_OBJECTIVEC], [AC_LANG(C) ac_ext=m ]) m4_define([AC_WX_LANG_OBJECTIVECPLUSPLUS], [AC_LANG(C++) ac_ext=mm ]) dnl =========================================================================== dnl macros to find a file in the list of include/lib paths dnl =========================================================================== dnl --------------------------------------------------------------------------- dnl call WX_PATH_FIND_INCLUDES(search path, header name), sets ac_find_includes dnl to the full name of the file that was found or leaves it empty if not found dnl --------------------------------------------------------------------------- AC_DEFUN([WX_PATH_FIND_INCLUDES], [ ac_find_includes= for ac_dir in $1 /usr/include do if test -f "$ac_dir/$2"; then ac_find_includes=$ac_dir break fi done ]) dnl --------------------------------------------------------------------------- dnl call WX_PATH_FIND_LIBRARIES(lib name, [optional extra search paths]) dnl sets ac_find_libraries to the full name of the file that was found dnl or leaves it empty if not found dnl --------------------------------------------------------------------------- AC_DEFUN([WX_PATH_FIND_LIBRARIES], [ ac_find_libraries= for ac_dir in $2 $SEARCH_LIB do for ac_extension in a so sl dylib dll.a; do if test -f "$ac_dir/lib$1.$ac_extension"; then ac_find_libraries=$ac_dir break 2 fi done done ]) dnl --------------------------------------------------------------------------- dnl return list of standard library paths dnl --------------------------------------------------------------------------- dnl return all default locations: dnl - /usr/lib: standard dnl - /usr/lib32: n32 ABI on IRIX dnl - /usr/lib64: n64 ABI on IRIX dnl - /usr/lib/64: 64 bit ABI on Solaris and Linux x86-64 dnl dnl NB: if any of directories in the list is not a subdir of /usr, code setting dnl wx_cv_std_libpath needs to be updated AC_DEFUN([WX_STD_LIBPATH], [/usr/lib /usr/lib32 /usr/lib/64 /usr/lib64]) dnl --------------------------------------------------------------------------- dnl Path to include, already defined dnl --------------------------------------------------------------------------- AC_DEFUN([WX_INCLUDE_PATH_EXIST], [ dnl never add -I/usr/include to the CPPFLAGS if test "x$1" = "x/usr/include"; then ac_path_to_include="" else echo "$2" | grep "\-I$1" > /dev/null result=$? if test $result = 0; then ac_path_to_include="" else ac_path_to_include=" -I$1" fi fi ]) dnl --------------------------------------------------------------------------- dnl Usage: WX_LINK_PATH_EXIST(path, libpath) dnl dnl Set ac_path_to_link to nothing if path is already in libpath, or to -Lpath dnl if it is not, so that libpath can be set to "$libpath$ac_path_to_link" dnl after calling this function dnl --------------------------------------------------------------------------- AC_DEFUN([WX_LINK_PATH_EXIST], [ dnl never add -L/usr/libXXX explicitly to libpath if test "$1" = "default location"; then ac_path_to_link="" else echo "$2" | grep "\-L$1" > /dev/null result=$? if test $result = 0; then ac_path_to_link="" else ac_path_to_link=" -L$1" fi fi ]) dnl --------------------------------------------------------------------------- dnl Usage: WX_FIND_LIB(lib-name, [lib-function to test], [extra search paths]) dnl dnl Tests in a variety of ways for the presence of lib-name dnl dnl On success, returns any novel path found in ac_find_libraries; else "std" dnl and any cflags in ac_find_cflags dnl On failure, ac_find_libraries will be empty dnl --------------------------------------------------------------------------- AC_DEFUN([WX_FIND_LIB], [ ac_find_libraries= dnl Try with pkg-config first. It requires its lib-name parameter lowercase fl_pkgname=`echo "$1" | tr [[:upper:]] [[:lower:]]` dnl suppress PKG_PROG_PKG_CONFIG output; we don't want to keep seeing it PKG_PROG_PKG_CONFIG() AS_MESSAGE_FD> /dev/null PKG_CHECK_MODULES([$1], [$fl_pkgname], [ dnl Start by assuming there are no novel lib paths ac_find_libraries="std" dnl A simple copy of the internal vars $1_CFLAGS $1_LIBS doesn't work dnl inside the macro dnl dnl TODO: When we stop being autoconf 2.61 compatible, the next 2 lines dnl should become: dnl AS_VAR_COPY([ac_find_cflags], [$1_CFLAGS]) dnl AS_VAR_COPY([fl_libs], [$1_LIBS]) eval ac_find_cflags=\$$1_CFLAGS eval fl_libs=\$$1_LIBS dnl fl_libs may now contain -Lfoopath -lfoo (only non-standard paths are dnl added) We only want the path bit, not the lib names for fl_path in $fl_libs do if test `echo "$fl_path" | cut -c 1-2` = "-L"; then dnl there shouldn't be >1 novel path dnl return it without the -L, ready for WX_LINK_PATH_EXIST ac_find_libraries=`echo "$fl_path" | cut -c 3-` fi done ], [ if test "x$ac_find_libraries" = "x"; then dnl Next with AC_CHECK_LIB, if a test function was provided if test "x$2" != "x"; then AC_CHECK_LIB([$1], [$2], [ac_find_libraries="std"]) fi fi if test "x$ac_find_libraries" = "x"; then dnl Finally try the search path dnl Output a message again, as AC_CHECK_LIB will just have said "no" AC_MSG_CHECKING([elsewhere]) dnl $3 will occasionally hold extra path(s) to search WX_PATH_FIND_LIBRARIES([$1], [$3]) if test "x$ac_find_libraries" != "x"; then AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) fi fi ]) ]) dnl =========================================================================== dnl C++ features test dnl =========================================================================== dnl --------------------------------------------------------------------------- dnl WX_CPP_NEW_HEADERS checks whether the compiler has "new" header dnl or only the old one - it may be generally assumed that if dnl exists, the other "new" headers (without .h) exist too. dnl dnl call WX_CPP_NEW_HEADERS(action-if-true, action-if-false) dnl --------------------------------------------------------------------------- AC_DEFUN([WX_CPP_NEW_HEADERS], [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_CHECK_HEADERS([iostream],,, [ ]) if test "$ac_cv_header_iostream" = "yes" ; then ifelse([$1], , :, [$1]) else ifelse([$2], , :, [$2]) fi AC_LANG_RESTORE ]) dnl --------------------------------------------------------------------------- dnl WX_CPP_EXPLICIT checks whether the C++ compiler support the explicit dnl keyword and defines HAVE_EXPLICIT if this is the case dnl --------------------------------------------------------------------------- AC_DEFUN([WX_CPP_EXPLICIT], [ AC_CACHE_CHECK([if C++ compiler supports the explicit keyword], wx_cv_explicit, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS dnl do the test in 2 steps: first check that the compiler knows about the dnl explicit keyword at all and then verify that it really honours it AC_TRY_COMPILE( [ class Foo { public: explicit Foo(int) {} }; ], [ return 0; ], [ AC_TRY_COMPILE( [ class Foo { public: explicit Foo(int) {} }; static void TakeFoo(const Foo& foo) { } ], [ TakeFoo(17); return 0; ], wx_cv_explicit=no, wx_cv_explicit=yes ) ], wx_cv_explicit=no ) AC_LANG_RESTORE ]) if test "$wx_cv_explicit" = "yes"; then AC_DEFINE(HAVE_EXPLICIT) fi ]) dnl --------------------------------------------------------------------------- dnl WX_CHECK_FUNCS(FUNCTIONS..., dnl [ACTION-IF-FOUND], dnl [ACTION-IF-NOT-FOUND], dnl [EXTRA-DEFINES-AND-INCLUDES], dnl [EXTRA-TEST-CODE]) dnl dnl Checks that the functions listed in FUNCTIONS exist in the headers and the dnl libs. For each function, if it is found then defines 'HAVE_FUNCTION' and dnl executes ACTION-IF-FOUND, otherwise executes ACTION-IF-NOT-FOUND. dnl dnl The code from EXTRA-DEFINES-AND-INCLUDES is inserted into the test before dnl the default headers are included, and EXTRA-TEST-CODE is inserted into dnl the main() function after the default test for existence. dnl dnl Examples: dnl # the simple case dnl WX_CHECK_FUNCS(stat) dnl # use break to finish the loop early dnl WX_CHECK_FUNCS(mkstemp mktemp, break) dnl # extra defines dnl WX_CHECK_FUNCS(strtok_r, [], [], [#define _RREENTRANT]) dnl # extra includes dnl WX_CHECK_FUNCS(swprintf, [], [], [#include ]) dnl # checking the signature with extra test code dnl WX_CHECK_FUNCS(gettimeofday, [], [], [#include ] dnl [struct timeval tv; struct timezone tz; gettimeofday(&tv, &tz)]) dnl --------------------------------------------------------------------------- AC_DEFUN([WX_CHECK_FUNCS], [ for wx_func in $1 do AC_CACHE_CHECK( [for $wx_func], [wx_cv_func_$wx_func], [ AC_LINK_IFELSE( [ AC_LANG_PROGRAM( [ $4 AC_INCLUDES_DEFAULT ], [ #ifndef $wx_func &$wx_func; #endif $5 ]) ], [eval wx_cv_func_$wx_func=yes], [eval wx_cv_func_$wx_func=no]) ]) if eval test \$wx_cv_func_$wx_func = yes then AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$wx_func])) $2 else : $3 fi done ]) dnl --------------------------------------------------------------------------- dnl a slightly better AC_C_BIGENDIAN macro which allows cross-compiling dnl --------------------------------------------------------------------------- AC_DEFUN([WX_C_BIGENDIAN], [AC_CACHE_CHECK([whether byte ordering is bigendian], ac_cv_c_bigendian, [ac_cv_c_bigendian=unknown # See if sys/param.h defines the BYTE_ORDER macro. AC_TRY_COMPILE([#include #include ], [ #if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN bogus endian macros #endif], [# It does; now see whether it defined to BIG_ENDIAN or not. AC_TRY_COMPILE([#include #include ], [ #if BYTE_ORDER != BIG_ENDIAN not big endian #endif], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)]) if test $ac_cv_c_bigendian = unknown; then AC_TRY_RUN([main () { /* Are we little or big endian? From Harbison&Steele. */ union { long l; char c[sizeof (long)]; } u; u.l = 1; exit (u.c[sizeof (long) - 1] == 1); }], [ac_cv_c_bigendian=no], [ac_cv_c_bigendian=yes], [ac_cv_c_bigendian=unknown]) fi]) if test $ac_cv_c_bigendian = unknown; then AC_MSG_WARN([Assuming little-endian target machine - this may be overridden by adding the line "ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}" to config.cache file]) fi if test $ac_cv_c_bigendian = yes; then AC_DEFINE(WORDS_BIGENDIAN) fi ]) dnl --------------------------------------------------------------------------- dnl override AC_ARG_ENABLE/WITH to handle options defaults dnl --------------------------------------------------------------------------- dnl this macro checks for a three-valued command line --with argument: dnl possible arguments are 'yes', 'no', 'sys', or 'builtin' dnl usage: WX_ARG_SYS_WITH(option, helpmessage, variable-name) dnl dnl the default value (used if the option is not specified at all) is dnl determined in the following way: dnl 1. If default value for the given library (DEFAULT_wxUSE_LIBXXX) exists, dnl it is used: this allows to disable some libraries by default. dnl 2. If wxUSE_ALL_FEATURES is turned off, the use of the library is turned dnl off as well: this ensures that minimal builds are really minimal. dnl 3. If wxUSE_SYS_LIBS is turned off, then "builtin" is used: this allows dnl to prevent system libraries from being used by using a single option. dnl 4. Otherwise the default value is "yes", meaning that either the system dnl (preferred) or builtin version of the library will be used. AC_DEFUN([WX_ARG_SYS_WITH], [ AC_MSG_CHECKING([for --with-$1]) AC_ARG_WITH($1, [$2], [ if test "$withval" = yes; then AS_TR_SH(wx_cv_use_$1)='$3=yes' elif test "$withval" = no; then AS_TR_SH(wx_cv_use_$1)='$3=no' elif test "$withval" = sys; then AS_TR_SH(wx_cv_use_$1)='$3=sys' elif test "$withval" = builtin; then AS_TR_SH(wx_cv_use_$1)='$3=builtin' else AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin]) fi ], [ if test "DEFAULT_$3" = no; then value=no elif test "$wxUSE_ALL_FEATURES" = no; then value=no elif test "$wxUSE_SYS_LIBS" = no; then value=builtin else value=yes fi AS_TR_SH(wx_cv_use_$1)="$3=$value" ]) eval "$AS_TR_SH(wx_cv_use_$1)" if test "$$3" = yes; then AC_MSG_RESULT(yes) elif test "$$3" = no; then AC_MSG_RESULT(no) elif test "$$3" = sys; then AC_MSG_RESULT([system version]) elif test "$$3" = builtin; then AC_MSG_RESULT([builtin version]) else AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin]) fi ]) dnl this macro simply checks for a command line argument dnl usage: WX_ARG_WITH(option, helpmessage, variable-name, [withstring]) AC_DEFUN([WX_ARG_WITH], [ withstring=$4 defaultval=$wxUSE_ALL_FEATURES if test -z "$defaultval"; then if test x"$withstring" = xwithout; then defaultval=yes else defaultval=no fi fi AC_MSG_CHECKING([for --${withstring:-with}-$1]) AC_ARG_WITH($1, [$2], [ if test "$withval" = yes; then AS_TR_SH(wx_cv_use_$1)='$3=yes' else AS_TR_SH(wx_cv_use_$1)='$3=no' fi ], [ AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$defaultval}" ]) eval "$AS_TR_SH(wx_cv_use_$1)" if test x"$withstring" = xwithout; then if test $$3 = yes; then result=no else result=yes fi else result=$$3 fi AC_MSG_RESULT($result) ]) dnl same as WX_ARG_WITH but makes it clear that the option is enabled by default AC_DEFUN([WX_ARG_WITHOUT], [WX_ARG_WITH($1, [$2], $3, without)]) dnl like WX_ARG_WITH but uses AC_ARG_ENABLE instead of AC_ARG_WITH dnl usage: WX_ARG_ENABLE(option, helpmessage, var, [enablestring], [default]) dnl dnl enablestring can be omitted or a literal string "disable" and allows to dnl show "checking for --disable-foo" message when running configure instead of dnl the default "checking for --enable-foo" one whih is useful for the options dnl enabled by default dnl dnl the "default" argument can be omitted or contain the default value to use dnl for the option if it's unspecified AC_DEFUN([WX_ARG_ENABLE], [ enablestring=$4 defaultval=$5 if test -z "$defaultval"; then if test x"$enablestring" = xdisable; then defaultval=yes else defaultval=no fi fi AC_MSG_CHECKING([for --${enablestring:-enable}-$1]) AC_ARG_ENABLE($1, [$2], [ if test "$enableval" = yes; then AS_TR_SH(wx_cv_use_$1)='$3=yes' else AS_TR_SH(wx_cv_use_$1)='$3=no' fi ], [ AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$defaultval}" ]) eval "$AS_TR_SH(wx_cv_use_$1)" if test x"$enablestring" = xdisable; then if test $$3 = no; then result=yes else result=no fi else result=$$3 fi AC_MSG_RESULT($result) ]) dnl the same as WX_ARG_ENABLE but makes it more clear that the option is dnl enabled by default AC_DEFUN([WX_ARG_DISABLE], [WX_ARG_ENABLE($1, [$2], $3, disable)]) dnl same as WX_ARG_ENABLE but defaults to wxUSE_ALL_FEATURES instead of "yes" AC_DEFUN([WX_ARG_FEATURE], [WX_ARG_ENABLE($1, [$2], $3,, $wxUSE_ALL_FEATURES)]) dnl Like WX_ARG_ENABLE but accepts a parameter. dnl dnl Usage: dnl WX_ARG_ENABLE_PARAM(option, helpmessage, variable-name, enablestring) dnl dnl Example: dnl WX_ARG_ENABLE_PARAM(foo, [[ --enable-foo[=bar] use foo]], wxUSE_FOO) dnl dnl --enable-foo wxUSE_FOO=yes dnl --disable-foo wxUSE_FOO=no dnl --enable-foo=bar wxUSE_FOO=bar dnl wxUSE_FOO=$DEFAULT_wxUSE_FOO dnl AC_DEFUN([WX_ARG_ENABLE_PARAM], [ enablestring=$4 AC_MSG_CHECKING([for --${enablestring:-enable}-$1]) AC_ARG_ENABLE($1, [$2], [ wx_cv_use_$1="$3='$enableval'" ], [ wx_cv_use_$1='$3='$DEFAULT_$3 ]) eval "$wx_cv_use_$1" AC_MSG_RESULT([$$3]) ]) dnl =========================================================================== dnl Linker features test dnl =========================================================================== dnl --------------------------------------------------------------------------- dnl WX_VERSIONED_SYMBOLS checks whether the linker can create versioned dnl symbols. If it can, sets LDFLAGS_VERSIONING to $CXX flags needed to use dnl version script file named versionfile dnl dnl call WX_VERSIONED_SYMBOLS(versionfile) dnl --------------------------------------------------------------------------- AC_DEFUN([WX_VERSIONED_SYMBOLS], [ case "${host}" in *-*-cygwin* | *-*-mingw* ) dnl although ld does support version script option on these dnl platforms, it doesn't make much sense to use it under Win32 dnl and, moreover, this breaks linking because of a bug in handling dnl paths in -Wl,--version-script,path option (if we ever do need dnl to use it for cygwin/mingw32, keep in mind that replacing last dnl comma with the equal sign works) so dnl simply disable it wx_cv_version_script=no ;; *) AC_CACHE_CHECK([if the linker accepts --version-script], wx_cv_version_script, [ echo "VER_1 { *; };" >conftest.sym echo "int main() { return 0; }" >conftest.cpp if AC_TRY_COMMAND([ $CXX -o conftest.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp -Wl,--version-script,conftest.sym >/dev/null 2>conftest.stderr]) ; then if test -s conftest.stderr ; then wx_cv_version_script=no else wx_cv_version_script=yes fi else wx_cv_version_script=no fi dnl There's a problem in some old linkers with --version-script that dnl can cause linking to fail when you have objects with vtables in dnl libs 3 deep. This is known to happen in netbsd and openbsd with dnl ld 2.11.2. dnl dnl To test for this we need to make some shared libs and dnl unfortunately we can't be sure of the right way to do that. If the dnl first two compiles don't succeed then it looks like the test isn't dnl working and the result is ignored, but if OTOH the first two dnl succeed but the third does not then the bug has been detected and dnl the --version-script flag is dropped. if test $wx_cv_version_script = yes then echo "struct B { virtual ~B() { } }; \ struct D : public B { }; \ void F() { D d; }" > conftest.cpp if AC_TRY_COMMAND([ $CXX -shared -fPIC -o conftest1.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp -Wl,--version-script,conftest.sym >/dev/null 2>/dev/null]) && AC_TRY_COMMAND([ $CXX -shared -fPIC -o conftest2.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp -Wl,--version-script,conftest.sym conftest1.output >/dev/null 2>/dev/null]) then if AC_TRY_COMMAND([ $CXX -shared -fPIC -o conftest3.output $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.cpp -Wl,--version-script,conftest.sym conftest2.output conftest1.output >/dev/null 2>/dev/null]) then wx_cv_version_script=yes else wx_cv_version_script=no fi fi fi rm -f conftest.output conftest.stderr conftest.sym conftest.cpp rm -f conftest1.output conftest2.output conftest3.output ]) if test $wx_cv_version_script = yes ; then LDFLAGS_VERSIONING="-Wl,--version-script,$1" fi ;; esac ]) dnl =========================================================================== dnl "3rd party" macros included here because they are not widely available dnl =========================================================================== dnl --------------------------------------------------------------------------- dnl test for availability of iconv() dnl --------------------------------------------------------------------------- dnl From Bruno Haible. AC_DEFUN([AM_ICONV], [ dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and dnl those with the standalone portable GNU libiconv installed). AC_ARG_WITH([libiconv-prefix], [ --with-libiconv-prefix=DIR search for libiconv in DIR/include and DIR/lib], [ for dir in `echo "$withval" | tr : ' '`; do if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi if test -d $dir/lib; then LDFLAGS="$LDFLAGS -L$dir/lib"; fi done ]) AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [ am_cv_func_iconv="no, consider installing GNU libiconv" am_cv_lib_iconv=no AC_TRY_LINK([#include #include ], [iconv_t cd = iconv_open("",""); iconv(cd,NULL,NULL,NULL,NULL); iconv_close(cd);], am_cv_func_iconv=yes) if test "$am_cv_func_iconv" != yes; then am_save_LIBS="$LIBS" LIBS="$LIBS -liconv" AC_TRY_LINK([#include #include ], [iconv_t cd = iconv_open("",""); iconv(cd,NULL,NULL,NULL,NULL); iconv_close(cd);], am_cv_lib_iconv=yes am_cv_func_iconv=yes) LIBS="$am_save_LIBS" fi ]) if test "$am_cv_func_iconv" = yes; then AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.]) AC_CACHE_CHECK([if iconv needs const], wx_cv_func_iconv_const, AC_TRY_COMPILE([ #include #include extern #ifdef __cplusplus "C" #endif #if defined(__STDC__) || defined(__cplusplus) size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); #else size_t iconv(); #endif ], [], wx_cv_func_iconv_const="no", wx_cv_func_iconv_const="yes" ) ) iconv_const= if test "x$wx_cv_func_iconv_const" = "xyes"; then iconv_const="const" fi AC_DEFINE_UNQUOTED(ICONV_CONST, $iconv_const, [Define as const if the declaration of iconv() needs const.]) fi LIBICONV= if test "$am_cv_lib_iconv" = yes; then LIBICONV="-liconv" fi AC_SUBST(LIBICONV) ]) dnl --------------------------------------------------------------------------- dnl AC_SYS_LARGEFILE (partly based on the code from autoconf 2.5x) dnl --------------------------------------------------------------------------- dnl WX_SYS_LARGEFILE_TEST dnl dnl NB: original autoconf test was checking if compiler supported 6 bit off_t dnl arithmetic properly but this failed miserably with gcc under Linux dnl whereas the system still supports 64 bit files, so now simply check dnl that off_t is big enough define(WX_SYS_LARGEFILE_TEST, [typedef struct { unsigned int field: sizeof(off_t) == 8; } wxlf; ]) dnl WX_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE, CACHE-VAR) define(WX_SYS_LARGEFILE_MACRO_VALUE, [ AC_CACHE_CHECK([for $1 value needed for large files], [$3], [ AC_TRY_COMPILE([#define $1 $2 #include ], WX_SYS_LARGEFILE_TEST, [$3=$2], [$3=no]) ] ) if test "$$3" != no; then wx_largefile=yes AC_DEFINE_UNQUOTED([$1], [$$3]) fi ]) dnl AC_SYS_LARGEFILE dnl ---------------- dnl By default, many hosts won't let programs access large files; dnl one must use special compiler options to get large-file access to work. dnl For more details about this brain damage please see: dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html AC_DEFUN([AC_SYS_LARGEFILE], [AC_ARG_ENABLE(largefile, [ --disable-largefile omit support for large files]) if test "$enable_largefile" != no; then dnl _FILE_OFFSET_BITS==64 is needed for Linux, Solaris, ... dnl _LARGE_FILES -- for AIX wx_largefile=no WX_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64, ac_cv_sys_file_offset_bits) if test "x$wx_largefile" != "xyes"; then WX_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1, ac_cv_sys_large_files) fi AC_MSG_CHECKING(if large file support is available) if test "x$wx_largefile" = "xyes"; then AC_DEFINE(HAVE_LARGEFILE_SUPPORT) fi AC_MSG_RESULT($wx_largefile) fi ])