dnl Vadim Zeitlin and Ron Lee
dnl
dnl This script is under the wxWindows licence.
-dnl
-dnl Version: $Id$
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 the a file in the list of include/lib paths
+dnl macros to find a file in the list of include/lib paths
dnl ===========================================================================
dnl ---------------------------------------------------------------------------
AC_DEFUN([WX_PATH_FIND_INCLUDES],
[
ac_find_includes=
-for ac_dir in $1;
+for ac_dir in $1 /usr/include
do
if test -f "$ac_dir/$2"; then
ac_find_includes=$ac_dir
])
dnl ---------------------------------------------------------------------------
-dnl call WX_PATH_FIND_LIBRARIES(search path, header name), sets ac_find_libraries
-dnl to the full name of the file that was found or leaves it empty if not found
+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 $1;
+ ac_find_libraries=
+ for ac_dir in $2 $SEARCH_LIB
do
- for ac_extension in a so sl dylib; do
- if test -f "$ac_dir/lib$2.$ac_extension"; then
+ 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
])
+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],
[
- ac_path_to_include=$1
- echo "$2" | grep "\-I$1" > /dev/null
- result=$?
- if test $result = 0; then
+ dnl never add -I/usr/include to the CPPFLAGS
+ if test "x$1" = "x/usr/include"; then
ac_path_to_include=""
else
- ac_path_to_include=" -I$1"
+ echo "$2" | grep "\-I$1" > /dev/null
+ result=$?
+ if test $result = 0; then
+ ac_path_to_include=""
+ else
+ ac_path_to_include=" -I$1"
+ fi
fi
])
dnl ---------------------------------------------------------------------------
-dnl Path to link, already defined
+dnl Usage: WX_LINK_PATH_EXIST(path, libpath)
+dnl
+dnl Set ac_path_to_link to nothing if path is already in libpath, or to -Lpath
+dnl if it is not, so that libpath can be set to "$libpath$ac_path_to_link"
+dnl after calling this function
dnl ---------------------------------------------------------------------------
AC_DEFUN([WX_LINK_PATH_EXIST],
[
- echo "$2" | grep "\-L$1" > /dev/null
- result=$?
- if test $result = 0; then
+ dnl never add -L/usr/libXXX explicitly to libpath
+ if test "$1" = "default location"; then
ac_path_to_link=""
else
- ac_path_to_link=" -L$1"
+ 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 or only the old <iostream.h> one - it may be generally assumed that if
dnl <iostream> exists, the other "new" headers (without .h) exist too.
dnl
-dnl call WX_CPP_NEW_HEADERS(actiof-if-true, action-if-false-or-cross-compiling)
+dnl call WX_CPP_NEW_HEADERS(action-if-true, action-if-false)
dnl ---------------------------------------------------------------------------
AC_DEFUN([WX_CPP_NEW_HEADERS],
[
- if test "$cross_compiling" = "yes"; then
- ifelse([$2], , :, [$2])
- else
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
- AC_CHECK_HEADERS(iostream)
+ AC_CHECK_HEADERS([iostream],,, [ ])
if test "$ac_cv_header_iostream" = "yes" ; then
ifelse([$1], , :, [$1])
fi
AC_LANG_RESTORE
- fi
])
dnl ---------------------------------------------------------------------------
-dnl WX_CPP_BOOL checks whether the C++ compiler has a built in bool type
-dnl
-dnl call WX_CPP_BOOL - will define HAVE_BOOL if the compiler supports bool
+dnl WX_CPP_EXPLICIT checks whether the C++ compiler support the explicit
+dnl keyword and defines HAVE_EXPLICIT if this is the case
dnl ---------------------------------------------------------------------------
-AC_DEFUN([WX_CPP_BOOL],
+AC_DEFUN([WX_CPP_EXPLICIT],
[
- AC_CACHE_CHECK([if C++ compiler supports bool], wx_cv_cpp_bool,
+ AC_CACHE_CHECK([if C++ compiler supports the explicit keyword],
+ wx_cv_explicit,
[
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
+ dnl do the test in 2 steps: first check that the compiler knows about the
+ dnl explicit keyword at all and then verify that it really honours it
AC_TRY_COMPILE(
[
+ class Foo { public: explicit Foo(int) {} };
],
[
- bool b = true;
-
return 0;
],
[
- wx_cv_cpp_bool=yes
+ AC_TRY_COMPILE(
+ [
+ class Foo { public: explicit Foo(int) {} };
+ static void TakeFoo(const Foo& foo) { }
+ ],
+ [
+ TakeFoo(17);
+ return 0;
+ ],
+ wx_cv_explicit=no,
+ wx_cv_explicit=yes
+ )
],
- [
- wx_cv_cpp_bool=no
- ]
+ wx_cv_explicit=no
)
AC_LANG_RESTORE
])
- if test "$wx_cv_cpp_bool" = "yes"; then
- AC_DEFINE(HAVE_BOOL)
+ 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 <wchar.h>])
+dnl # checking the signature with extra test code
+dnl WX_CHECK_FUNCS(gettimeofday, [], [], [#include <sys/time.h>]
+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_cv_c_bigendian=no], [ac_cv_c_bigendian=yes], [ac_cv_c_bigendian=unknown])
fi])
if test $ac_cv_c_bigendian = unknown; then
- AC_MSG_WARN([Assuming little-endian target machine - this may be overriden by adding the line "ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}" to config.cache file])
+ 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)
])
dnl ---------------------------------------------------------------------------
-dnl override AC_ARG_ENABLE/WITH to cache the results in .cache file
+dnl override AC_ARG_ENABLE/WITH to handle options defaults
dnl ---------------------------------------------------------------------------
-AC_DEFUN([WX_ARG_CACHE_INIT],
- [
- wx_arg_cache_file="configarg.cache"
- echo "loading argument cache $wx_arg_cache_file"
- rm -f ${wx_arg_cache_file}.tmp
- touch ${wx_arg_cache_file}.tmp
- touch ${wx_arg_cache_file}
- ])
-
-AC_DEFUN([WX_ARG_CACHE_FLUSH],
- [
- echo "saving argument cache $wx_arg_cache_file"
- mv ${wx_arg_cache_file}.tmp ${wx_arg_cache_file}
- ])
-
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 the value
+dnl of wxUSE_ALL_FEATURES (which is "yes" by default but can be changed by
+dnl giving configure --disable-all-features option)
AC_DEFUN([WX_ARG_SYS_WITH],
[
AC_MSG_CHECKING([for --with-$1])
- no_cache=0
AC_ARG_WITH($1, [$2],
[
if test "$withval" = yes; then
- ac_cv_use_$1='$3=yes'
+ AS_TR_SH(wx_cv_use_$1)='$3=yes'
elif test "$withval" = no; then
- ac_cv_use_$1='$3=no'
+ AS_TR_SH(wx_cv_use_$1)='$3=no'
elif test "$withval" = sys; then
- ac_cv_use_$1='$3=sys'
+ AS_TR_SH(wx_cv_use_$1)='$3=sys'
elif test "$withval" = builtin; then
- ac_cv_use_$1='$3=builtin'
+ 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
],
[
- LINE=`grep "$3" ${wx_arg_cache_file}`
- if test "x$LINE" != x ; then
- eval "DEFAULT_$LINE"
- else
- no_cache=1
- fi
-
- ac_cv_use_$1='$3='$DEFAULT_$3
+ AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$wxUSE_ALL_FEATURES}"
])
- eval "$ac_cv_use_$1"
- if test "$no_cache" != 1; then
- echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
- fi
+ eval "$AS_TR_SH(wx_cv_use_$1)"
if test "$$3" = yes; then
AC_MSG_RESULT(yes)
fi
])
-dnl this macro checks for a command line argument and caches the result
-dnl usage: WX_ARG_WITH(option, helpmessage, variable-name)
+dnl this macro simply checks for a command line argument
+dnl usage: WX_ARG_WITH(option, helpmessage, variable-name, [withstring])
AC_DEFUN([WX_ARG_WITH],
[
- AC_MSG_CHECKING([for --with-$1])
- no_cache=0
+ withstring=$4
+ defaultval=$wxUSE_ALL_FEATURES
+ if test -z "$defaultval"; then
+ if test x"$withstring" = xwithout; then
+ defaultval=yes
+ else
+ defaultval=no
+ fi
+ fi
+ AC_MSG_CHECKING([for --${withstring:-with}-$1])
AC_ARG_WITH($1, [$2],
[
if test "$withval" = yes; then
- ac_cv_use_$1='$3=yes'
+ AS_TR_SH(wx_cv_use_$1)='$3=yes'
else
- ac_cv_use_$1='$3=no'
+ AS_TR_SH(wx_cv_use_$1)='$3=no'
fi
],
[
- LINE=`grep "$3" ${wx_arg_cache_file}`
- if test "x$LINE" != x ; then
- eval "DEFAULT_$LINE"
- else
- no_cache=1
- fi
-
- ac_cv_use_$1='$3='$DEFAULT_$3
+ AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$defaultval}"
])
- eval "$ac_cv_use_$1"
- if test "$no_cache" != 1; then
- echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
- fi
+ eval "$AS_TR_SH(wx_cv_use_$1)"
- if test "$$3" = yes; then
- AC_MSG_RESULT(yes)
+ if test x"$withstring" = xwithout; then
+ if test $$3 = yes; then
+ result=no
+ else
+ result=yes
+ fi
else
- AC_MSG_RESULT(no)
+ result=$$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, variable-name)
+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],
[
- AC_MSG_CHECKING([for --enable-$1])
- no_cache=0
+ 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
- ac_cv_use_$1='$3=yes'
+ AS_TR_SH(wx_cv_use_$1)='$3=yes'
else
- ac_cv_use_$1='$3=no'
+ AS_TR_SH(wx_cv_use_$1)='$3=no'
fi
],
[
- LINE=`grep "$3" ${wx_arg_cache_file}`
- if test "x$LINE" != x ; then
- eval "DEFAULT_$LINE"
- else
- no_cache=1
- fi
-
- ac_cv_use_$1='$3='$DEFAULT_$3
+ AS_TR_SH(wx_cv_use_$1)='$3=${'DEFAULT_$3":-$defaultval}"
])
- eval "$ac_cv_use_$1"
- if test "$no_cache" != 1; then
- echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
- fi
+ eval "$AS_TR_SH(wx_cv_use_$1)"
- if test "$$3" = yes; then
- AC_MSG_RESULT(yes)
+ if test x"$enablestring" = xdisable; then
+ if test $$3 = no; then
+ result=yes
+ else
+ result=no
+ fi
else
- AC_MSG_RESULT(no)
+ result=$$3
fi
+
+ AC_MSG_RESULT($result)
])
+dnl the same as WX_ARG_ENABLE but makes it more clear that the option is
+dnl enabled by default
+AC_DEFUN([WX_ARG_DISABLE], [WX_ARG_ENABLE($1, [$2], $3, disable)])
+
+dnl same as WX_ARG_ENABLE but defaults to wxUSE_ALL_FEATURES instead of "yes"
+AC_DEFUN([WX_ARG_FEATURE], [WX_ARG_ENABLE($1, [$2], $3,, $wxUSE_ALL_FEATURES)])
+
+dnl Like WX_ARG_ENABLE but accepts a parameter.
+dnl
+dnl Usage:
+dnl WX_ARG_ENABLE_PARAM(option, helpmessage, variable-name, enablestring)
+dnl
+dnl Example:
+dnl WX_ARG_ENABLE_PARAM(foo, [[ --enable-foo[=bar] use foo]], wxUSE_FOO)
+dnl
+dnl --enable-foo wxUSE_FOO=yes
+dnl --disable-foo wxUSE_FOO=no
+dnl --enable-foo=bar wxUSE_FOO=bar
+dnl <not given> wxUSE_FOO=$DEFAULT_wxUSE_FOO
+dnl
+AC_DEFUN([WX_ARG_ENABLE_PARAM],
+ [
+ enablestring=$4
+ AC_MSG_CHECKING([for --${enablestring:-enable}-$1])
+ AC_ARG_ENABLE($1, [$2],
+ [
+ wx_cv_use_$1="$3='$enableval'"
+ ],
+ [
+ wx_cv_use_$1='$3='$DEFAULT_$3
+ ])
+
+ eval "$wx_cv_use_$1"
+
+ AC_MSG_RESULT([$$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 ===========================================================================
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 <sys/types.h>],
+ 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
+])
+
projects / wxWidgets.git / blobdiff