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 ===========================================================================
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
AC_DEFUN([WX_PATH_FIND_LIBRARIES],
[
ac_find_libraries=
-for ac_dir in $1;
+for ac_dir in $1 /usr/lib;
do
for ac_extension in a so sl dylib; do
if test -f "$ac_dir/lib$2.$ac_extension"; then
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$1"
+ fi
fi
])
dnl or only the old <iostream.h> one - it may be generally assumed that if
dnl <iostream> exists, the other "new" headers (without .h) exist too.
dnl
-dnl call WX_CPP_NEW_HEADERS(actiof-if-true, action-if-false-or-cross-compiling)
+dnl call WX_CPP_NEW_HEADERS(actiof-if-true, action-if-false)
dnl ---------------------------------------------------------------------------
AC_DEFUN([WX_CPP_NEW_HEADERS],
[
- if test "$cross_compiling" = "yes"; then
- ifelse([$2], , :, [$2])
- else
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
fi
AC_LANG_RESTORE
- fi
])
dnl ---------------------------------------------------------------------------
fi
])
+dnl ---------------------------------------------------------------------------
+dnl WX_CPP_EXPLICIT checks whether the C++ compiler support the explicit
+dnl keyword and defines HAVE_EXPLICIT if this is the case
+dnl ---------------------------------------------------------------------------
+
+AC_DEFUN([WX_CPP_EXPLICIT],
+[
+ AC_CACHE_CHECK([if C++ compiler supports the explicit keyword],
+ wx_cv_explicit,
+ [
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+
+ dnl do the test in 2 steps: first check that the compiler knows about the
+ dnl explicit keyword at all and then verify that it really honours it
+ AC_TRY_COMPILE(
+ [
+ class Foo { public: explicit Foo(int) {} };
+ ],
+ [
+ return 0;
+ ],
+ [
+ AC_TRY_COMPILE(
+ [
+ class Foo { public: explicit Foo(int) {} };
+ static void TakeFoo(const Foo& foo) { }
+ ],
+ [
+ TakeFoo(17);
+ return 0;
+ ],
+ wx_cv_explicit=no,
+ wx_cv_explicit=yes
+ )
+ ],
+ wx_cv_explicit=no
+ )
+
+ AC_LANG_RESTORE
+ ])
+
+ if test "$wx_cv_explicit" = "yes"; then
+ AC_DEFINE(HAVE_EXPLICIT)
+ fi
+])
+
dnl ---------------------------------------------------------------------------
dnl a slightly better AC_C_BIGENDIAN macro which allows cross-compiling
dnl ---------------------------------------------------------------------------
])
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, variable-name, enablestring)
+dnl
+dnl enablestring is a hack and allows to show "checking for --disable-foo"
+dnl message when running configure instead of the default "checking for
+dnl --enable-foo" one whih is useful for the options enabled by default
AC_DEFUN([WX_ARG_ENABLE],
[
- AC_MSG_CHECKING([for --enable-$1])
+ enablestring=$4
+ AC_MSG_CHECKING([for --${enablestring:-enable}-$1])
no_cache=0
AC_ARG_ENABLE($1, [$2],
[
])
+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 $CXX flags needed to use
+dnl version script file named versionfile
+dnl
+dnl call WX_VERSIONED_SYMBOLS(versionfile)
+dnl ---------------------------------------------------------------------------
+AC_DEFUN([WX_VERSIONED_SYMBOLS],
+[
+ found_versioning=no
+
+ dnl FIXME - doesn't work, Solaris linker doesn't accept wildcards
+ dnl in the script.
+ dnl dnl Check for known non-gcc cases:
+ dnl case "${host}" in
+ dnl *-*-solaris2* )
+ dnl if test "x$GCC" != "xyes" ; then
+ dnl LDFLAGS_VERSIONING="-M $1"
+ dnl found_versioning=yes
+ dnl fi
+ dnl ;;
+ dnl esac
+
+ dnl Generic check for GCC or GCC-like behaviour (Intel C++, GCC):
+ if test $found_versioning = no ; then
+ 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
+ rm -f conftest.output conftest.stderr conftest.sym conftest.cpp
+ ])
+ if test $wx_cv_version_script = yes ; then
+ LDFLAGS_VERSIONING="-Wl,--version-script,$1"
+ fi
+ fi
+])
+
dnl ===========================================================================
dnl "3rd party" macros included here because they are not widely available
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
+])
+
+
+dnl Available from the GNU Autoconf Macro Archive at:
+dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_const_cast.html
+dnl
+AC_DEFUN([AC_CXX_CONST_CAST],
+[AC_CACHE_CHECK(whether the compiler supports const_cast<>,
+ac_cv_cxx_const_cast,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE(,[int x = 0;const int& y = x;int& z = const_cast<int&>(y);return z;],
+ ac_cv_cxx_const_cast=yes, ac_cv_cxx_const_cast=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_const_cast" = yes; then
+ AC_DEFINE(HAVE_CONST_CAST,,[define if the compiler supports const_cast<>])
+fi
+])
+
+dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_reinterpret_cast.html
+AC_DEFUN([AC_CXX_REINTERPRET_CAST],
+[AC_CACHE_CHECK(whether the compiler supports reinterpret_cast<>,
+ac_cv_cxx_reinterpret_cast,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE([#include <typeinfo>
+class Base { public : Base () {} virtual void f () = 0;};
+class Derived : public Base { public : Derived () {} virtual void f () {} };
+class Unrelated { public : Unrelated () {} };
+int g (Unrelated&) { return 0; }],[
+Derived d;Base& b=d;Unrelated& e=reinterpret_cast<Unrelated&>(b);return g(e);],
+ ac_cv_cxx_reinterpret_cast=yes, ac_cv_cxx_reinterpret_cast=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_reinterpret_cast" = yes; then
+ AC_DEFINE(HAVE_REINTERPRET_CAST,,
+ [define if the compiler supports reinterpret_cast<>])
+fi
+])
+
+dnl and http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_static_cast.html
+AC_DEFUN([AC_CXX_STATIC_CAST],
+[AC_CACHE_CHECK(whether the compiler supports static_cast<>,
+ac_cv_cxx_static_cast,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE([#include <typeinfo>
+class Base { public : Base () {} virtual void f () = 0; };
+class Derived : public Base { public : Derived () {} virtual void f () {} };
+int g (Derived&) { return 0; }],[
+Derived d; Base& b = d; Derived& s = static_cast<Derived&> (b); return g (s);],
+ ac_cv_cxx_static_cast=yes, ac_cv_cxx_static_cast=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_static_cast" = yes; then
+ AC_DEFINE(HAVE_STATIC_CAST,, [define if the compiler supports static_cast<>])
+fi
+])
+
+dnl http://autoconf-archive.cryp.to/ac_cxx_dynamic_cast.html
+AC_DEFUN([AC_CXX_DYNAMIC_CAST],
+[AC_CACHE_CHECK(whether the compiler supports dynamic_cast<>,
+ac_cv_cxx_dynamic_cast,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE([#include <typeinfo>
+class Base { public : Base () {} virtual void f () = 0;};
+class Derived : public Base { public : Derived () {} virtual void f () {} };],[
+Derived d; Base& b=d; return dynamic_cast<Derived*>(&b) ? 0 : 1;],
+ ac_cv_cxx_dynamic_cast=yes, ac_cv_cxx_dynamic_cast=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_dynamic_cast" = yes; then
+ AC_DEFINE(HAVE_DYNAMIC_CAST,,[define if the compiler supports dynamic_cast<>])
+fi
+])
+
projects / wxWidgets.git / blobdiff