X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b4eecb7e2f52c0df1067c005eaf6f4c47cc6bca9..77a1771911ed222ba6861ead327c3735fc16a0b1:/acinclude.m4?ds=sidebyside diff --git a/acinclude.m4 b/acinclude.m4 index e49126ddcb..4f4ecb9682 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -8,6 +8,20 @@ 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 =========================================================================== @@ -29,15 +43,15 @@ for ac_dir in $1 /usr/include; ]) dnl --------------------------------------------------------------------------- -dnl call WX_PATH_FIND_LIBRARIES(search path, header name), sets ac_find_libraries +dnl call WX_PATH_FIND_LIBRARIES(search path, lib name), sets ac_find_libraries dnl to the full name of the file that was found or leaves it empty if not found dnl --------------------------------------------------------------------------- AC_DEFUN([WX_PATH_FIND_LIBRARIES], [ -ac_find_libraries= -for ac_dir in $1 /usr/lib; + ac_find_libraries= + for ac_dir in $1; do - for ac_extension in a so sl dylib; do + for ac_extension in a so sl dylib dll.a; do if test -f "$ac_dir/lib$2.$ac_extension"; then ac_find_libraries=$ac_dir break 2 @@ -46,6 +60,19 @@ for ac_dir in $1 /usr/lib; done ]) +dnl --------------------------------------------------------------------------- +dnl return list of standard library paths +dnl --------------------------------------------------------------------------- +dnl return all default locations: +dnl - /usr/lib: standard +dnl - /usr/lib32: n32 ABI on IRIX +dnl - /usr/lib64: n64 ABI on IRIX +dnl - /usr/lib/64: 64 bit ABI on Solaris and Linux x86-64 +dnl +dnl NB: if any of directories in the list is not a subdir of /usr, code setting +dnl wx_cv_std_libpath needs to be updated +AC_DEFUN([WX_STD_LIBPATH], [/usr/lib /usr/lib32 /usr/lib/64 /usr/lib64]) + dnl --------------------------------------------------------------------------- dnl Path to include, already defined dnl --------------------------------------------------------------------------- @@ -66,16 +93,25 @@ AC_DEFUN([WX_INCLUDE_PATH_EXIST], ]) dnl --------------------------------------------------------------------------- -dnl Path to link, already defined +dnl Usage: WX_LINK_PATH_EXIST(path, libpath) +dnl +dnl Set ac_path_to_link to nothing if path is already in libpath of to -Lpath +dnl if it is not, so that libpath can be set to "$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 explicitely 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$1" + fi fi ]) @@ -88,14 +124,11 @@ dnl WX_CPP_NEW_HEADERS checks whether the compiler has "new" header dnl or only the old one - it may be generally assumed that if dnl exists, the other "new" headers (without .h) exist too. dnl -dnl call WX_CPP_NEW_HEADERS(actiof-if-true, action-if-false-or-cross-compiling) +dnl call WX_CPP_NEW_HEADERS(actiof-if-true, action-if-false) dnl --------------------------------------------------------------------------- AC_DEFUN([WX_CPP_NEW_HEADERS], [ - if test "$cross_compiling" = "yes"; then - ifelse([$2], , :, [$2]) - else AC_LANG_SAVE AC_LANG_CPLUSPLUS @@ -108,7 +141,6 @@ AC_DEFUN([WX_CPP_NEW_HEADERS], fi AC_LANG_RESTORE - fi ]) dnl --------------------------------------------------------------------------- @@ -303,10 +335,11 @@ AC_DEFUN([WX_ARG_SYS_WITH], ]) dnl this macro checks for a command line argument and caches the result -dnl usage: WX_ARG_WITH(option, helpmessage, variable-name) +dnl usage: WX_ARG_WITH(option, helpmessage, variable-name, [withstring]) AC_DEFUN([WX_ARG_WITH], [ - AC_MSG_CHECKING([for --with-$1]) + withstring=$4 + AC_MSG_CHECKING([for --${withstring:-with}-$1]) no_cache=0 AC_ARG_WITH($1, [$2], [ @@ -427,7 +460,44 @@ AC_DEFUN([WX_VERSIONED_SYMBOLS], 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,$1" @@ -580,3 +650,80 @@ if test "$enable_largefile" != no; then AC_MSG_RESULT($wx_largefile) fi ]) + + +dnl Available from the GNU Autoconf Macro Archive at: +dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_const_cast.html +dnl +AC_DEFUN([AC_CXX_CONST_CAST], +[AC_CACHE_CHECK(whether the compiler supports const_cast<>, +ac_cv_cxx_const_cast, +[AC_LANG_SAVE + AC_LANG_CPLUSPLUS + AC_TRY_COMPILE(,[int x = 0;const int& y = x;int& z = const_cast(y);return z;], + ac_cv_cxx_const_cast=yes, ac_cv_cxx_const_cast=no) + AC_LANG_RESTORE +]) +if test "$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 +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(b);return g(e);], + ac_cv_cxx_reinterpret_cast=yes, ac_cv_cxx_reinterpret_cast=no) + AC_LANG_RESTORE +]) +if test "$ac_cv_cxx_reinterpret_cast" = yes; then + AC_DEFINE(HAVE_REINTERPRET_CAST,, + [define if the compiler supports reinterpret_cast<>]) +fi +]) + +dnl and http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_static_cast.html +AC_DEFUN([AC_CXX_STATIC_CAST], +[AC_CACHE_CHECK(whether the compiler supports static_cast<>, +ac_cv_cxx_static_cast, +[AC_LANG_SAVE + AC_LANG_CPLUSPLUS + AC_TRY_COMPILE([#include +class Base { public : Base () {} virtual void f () = 0; }; +class Derived : public Base { public : Derived () {} virtual void f () {} }; +int g (Derived&) { return 0; }],[ +Derived d; Base& b = d; Derived& s = static_cast (b); return g (s);], + ac_cv_cxx_static_cast=yes, ac_cv_cxx_static_cast=no) + AC_LANG_RESTORE +]) +if test "$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 +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(&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 +]) +