added GCC visibility support

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@47255 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2007-07-09 10:12:51 +00:00
parent b5dbe15d0b
commit 0ff20b9f00
9 changed files with 249 additions and 33 deletions
--- a/126
+++ b/126
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Id: configure.in 46713 2007-06-26 20:44:58Z VS .
+# From configure.in Id: configure.in 47230 2007-07-08 07:04:38Z VS .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for wxWidgets 2.9.0.
 #
@@ -707,6 +707,8 @@ PANGOFT2_CFLAGS
 PANGOFT2_LIBS
 PANGOXFT_CFLAGS
 PANGOXFT_LIBS
+CFLAGS_VISIBILITY
+CXXFLAGS_VISIBILITY
 REZ
 DEREZ
 SETFILE
@@ -33096,6 +33098,105 @@ echo "${ECHO_T}$wx_cv_version_script" >&6; }
    esac


+
+
+  if test -n "$GCC"; then
+    CFLAGS_VISIBILITY="-fvisibility=hidden"
+    CXXFLAGS_VISIBILITY="-fvisibility=hidden -fvisibility-inlines-hidden"
+    { echo "$as_me:$LINENO: checking for symbols visibility support" >&5
+echo $ECHO_N "checking for symbols visibility support... $ECHO_C" >&6; }
+    if test "${wx_cv_cc_visibility+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+      wx_save_CXXFLAGS="$CXXFLAGS"
+      CXXFLAGS="$CXXFLAGS $CXXFLAGS_VISIBILITY"
+      ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+         /* we need gcc >= 4.0, older versions with visibility support
+            didn't have class visibility: */
+         #if defined(__GNUC__) && __GNUC__ < 4
+         error this gcc is too old;
+         #endif
+
+         extern __attribute__((__visibility__("hidden"))) int hiddenvar;
+         extern __attribute__((__visibility__("default"))) int exportedvar;
+         extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void);
+         extern __attribute__((__visibility__("default"))) int exportedfunc (void);
+         class __attribute__((__visibility__("default"))) Foo {
+           Foo() {}
+         };
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  wx_cv_cc_visibility=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	wx_cv_cc_visibility=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+      CXXFLAGS="$wx_save_CXXFLAGS"
+fi
+
+    { echo "$as_me:$LINENO: result: $wx_cv_cc_visibility" >&5
+echo "${ECHO_T}$wx_cv_cc_visibility" >&6; }
+    if test $wx_cv_cc_visibility = yes; then
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_VISIBILITY 1
+_ACEOF
+
+    else
+      CFLAGS_VISIBILITY=""
+      CXXFLAGS_VISIBILITY=""
+    fi
+
+
+  fi
+
+
        if test "x$SUNCXX" = xyes; then
        SAMPLES_RPATH_FLAG="-R\$(wx_top_builddir)/lib"
        WXCONFIG_RPATH="-R\$libdir"
@@ -49482,6 +49583,9 @@ case "${host}" in
        ;;
 esac

+CFLAGS="$CFLAGS $CFLAGS_VISIBILITY"
+CXXFLAGS="$CXXFLAGS $CXXFLAGS_VISIBILITY"
+
 SAMPLES_SUBDIRS="`echo $SAMPLES_SUBDIRS | tr -s ' ' | tr ' ' '\n' | sort | uniq | tr '\n' ' '| tr -d '\r'`"


@@ -50511,12 +50615,12 @@ PANGOFT2_CFLAGS!$PANGOFT2_CFLAGS$ac_delim
 PANGOFT2_LIBS!$PANGOFT2_LIBS$ac_delim
 PANGOXFT_CFLAGS!$PANGOXFT_CFLAGS$ac_delim
 PANGOXFT_LIBS!$PANGOXFT_LIBS$ac_delim
+CFLAGS_VISIBILITY!$CFLAGS_VISIBILITY$ac_delim
+CXXFLAGS_VISIBILITY!$CXXFLAGS_VISIBILITY$ac_delim
 REZ!$REZ$ac_delim
 DEREZ!$DEREZ$ac_delim
 SETFILE!$SETFILE$ac_delim
 LIBICONV!$LIBICONV$ac_delim
-SDL_CONFIG!$SDL_CONFIG$ac_delim
-SDL_CFLAGS!$SDL_CFLAGS$ac_delim
 _ACEOF

  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 97; then
@@ -50558,6 +50662,8 @@ _ACEOF
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
  cat >conf$$subs.sed <<_ACEOF
+SDL_CONFIG!$SDL_CONFIG$ac_delim
+SDL_CFLAGS!$SDL_CFLAGS$ac_delim
 SDL_LIBS!$SDL_LIBS$ac_delim
 LIBGNOMEPRINTUI_CFLAGS!$LIBGNOMEPRINTUI_CFLAGS$ac_delim
 LIBGNOMEPRINTUI_LIBS!$LIBGNOMEPRINTUI_LIBS$ac_delim
@@ -50653,8 +50759,6 @@ COND_BUILD_DEBUG!$COND_BUILD_DEBUG$ac_delim
 COND_BUILD_DEBUG_DEBUG_FLAG_DEFAULT!$COND_BUILD_DEBUG_DEBUG_FLAG_DEFAULT$ac_delim
 COND_BUILD_DEBUG_DEBUG_INFO_DEFAULT!$COND_BUILD_DEBUG_DEBUG_INFO_DEFAULT$ac_delim
 COND_BUILD_DEBUG_UNICODE_0!$COND_BUILD_DEBUG_UNICODE_0$ac_delim
-COND_BUILD_DEBUG_UNICODE_1!$COND_BUILD_DEBUG_UNICODE_1$ac_delim
-COND_BUILD_RELEASE!$COND_BUILD_RELEASE$ac_delim
 _ACEOF

  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 97; then
@@ -50696,6 +50800,8 @@ _ACEOF
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
  cat >conf$$subs.sed <<_ACEOF
+COND_BUILD_DEBUG_UNICODE_1!$COND_BUILD_DEBUG_UNICODE_1$ac_delim
+COND_BUILD_RELEASE!$COND_BUILD_RELEASE$ac_delim
 COND_BUILD_RELEASE_DEBUG_INFO_DEFAULT!$COND_BUILD_RELEASE_DEBUG_INFO_DEFAULT$ac_delim
 COND_BUILD_RELEASE_UNICODE_0!$COND_BUILD_RELEASE_UNICODE_0$ac_delim
 COND_BUILD_RELEASE_UNICODE_1!$COND_BUILD_RELEASE_UNICODE_1$ac_delim
@@ -50791,8 +50897,6 @@ COND_TOOLKIT_!$COND_TOOLKIT_$ac_delim
 COND_TOOLKIT_COCOA!$COND_TOOLKIT_COCOA$ac_delim
 COND_TOOLKIT_COCOA_USE_GUI_1!$COND_TOOLKIT_COCOA_USE_GUI_1$ac_delim
 COND_TOOLKIT_COCOA_USE_GUI_1_WXUNIV_0!$COND_TOOLKIT_COCOA_USE_GUI_1_WXUNIV_0$ac_delim
-COND_TOOLKIT_DFB!$COND_TOOLKIT_DFB$ac_delim
-COND_TOOLKIT_DFB_USE_GUI_1!$COND_TOOLKIT_DFB_USE_GUI_1$ac_delim
 _ACEOF

  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 97; then
@@ -50834,6 +50938,8 @@ _ACEOF
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
  cat >conf$$subs.sed <<_ACEOF
+COND_TOOLKIT_DFB!$COND_TOOLKIT_DFB$ac_delim
+COND_TOOLKIT_DFB_USE_GUI_1!$COND_TOOLKIT_DFB_USE_GUI_1$ac_delim
 COND_TOOLKIT_GTK!$COND_TOOLKIT_GTK$ac_delim
 COND_TOOLKIT_GTK_TOOLKIT_VERSION_!$COND_TOOLKIT_GTK_TOOLKIT_VERSION_$ac_delim
 COND_TOOLKIT_GTK_TOOLKIT_VERSION_2!$COND_TOOLKIT_GTK_TOOLKIT_VERSION_2$ac_delim
@@ -50929,8 +51035,6 @@ GUIDIST!$GUIDIST$ac_delim
 DISTDIR!$DISTDIR$ac_delim
 SAMPLES_SUBDIRS!$SAMPLES_SUBDIRS$ac_delim
 LDFLAGS_GL!$LDFLAGS_GL$ac_delim
-OPENGL_LIBS!$OPENGL_LIBS$ac_delim
-DMALLOC_LIBS!$DMALLOC_LIBS$ac_delim
 _ACEOF

  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 97; then
@@ -50972,6 +51076,8 @@ _ACEOF
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
  cat >conf$$subs.sed <<_ACEOF
+OPENGL_LIBS!$OPENGL_LIBS$ac_delim
+DMALLOC_LIBS!$DMALLOC_LIBS$ac_delim
 WX_VERSION_TAG!$WX_VERSION_TAG$ac_delim
 RESCOMP!$RESCOMP$ac_delim
 RESFLAGS!$RESFLAGS$ac_delim
@@ -50987,7 +51093,7 @@ LIBOBJS!$LIBOBJS$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF

-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 13; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 15; then
    break
  elif $ac_last_try; then
    { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5