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Avoild some linker errors and warnings
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@23963 72102866-910b-0410-8b05-ffd578937521
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rfm
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5 changed files with 100 additions and 1 deletions
11
ChangeLog
11
ChangeLog
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@ -1,3 +1,14 @@
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2006-10-25 Richard Frith-Macdonald <rfm@gnu.org>
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* configure.ac: Define HAVE_VISIBILITY_ATTRIBUTE if gcc's visibility
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attribute is both present in the version being used and working on
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the current platform.
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* configure: Regenerate
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* Headers/Additions/GNUstepBase/config.h.in: Regenerate
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* Source/GSPrivate.h: Only use the visibility attribute if it is
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available. Avoids warnings (and link errors in at least one case)
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on systems where it is not fully supported by gcc yet.
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2006-10-23 Richard Frith-Macdonald <rfm@gnu.org>
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* Source/NSCalendarDate: when adding offset to a date, work in
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@ -378,6 +378,9 @@
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/* Define to 1 if you have the `vasprintf' function. */
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#undef HAVE_VASPRINTF
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/* Says whether the visibility attribute works */
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#undef HAVE_VISIBILITY_ATTRIBUTE
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/* Define to 1 if you have the `vsprintf' function. */
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#undef HAVE_VSPRINTF
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@ -28,7 +28,7 @@
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@class NSNotification;
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#if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3))
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#if ( (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) ) && defined(HAVE_VISIBILITY_ATTRIBUTE) )
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#define GS_ATTRIB_PRIVATE __attribute__ ((visibility("internal")))
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#else
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#define GS_ATTRIB_PRIVATE
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67
configure
vendored
67
configure
vendored
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@ -4352,6 +4352,73 @@ else
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echo "${ECHO_T}not found" >&6; }
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fi
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{ echo "$as_me:$LINENO: checking for gcc visibility attribute support" >&5
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echo $ECHO_N "checking for gcc visibility attribute support... $ECHO_C" >&6; }
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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cat >conftest.$ac_ext <<_ACEOF
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#include <stdio.h>
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int foo() __attribute__ ((visibility("internal")));
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int foo(){ return 1; }
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int main(){ return foo(); }
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_ACEOF
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rm -f conftest.$ac_objext
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if { (ac_try="$ac_compile"
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case "(($ac_try" in
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*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
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*) ac_try_echo=$ac_try;;
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esac
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eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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(eval "$ac_compile") 2>conftest.er1
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ac_status=$?
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grep -v '^ *+' conftest.er1 >conftest.err
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rm -f conftest.er1
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cat conftest.err >&5
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
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{ (case "(($ac_try" in
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*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
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*) ac_try_echo=$ac_try;;
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esac
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eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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(eval "$ac_try") 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (case "(($ac_try" in
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*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
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*) ac_try_echo=$ac_try;;
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esac
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eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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(eval "$ac_try") 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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{ echo "$as_me:$LINENO: result: found" >&5
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echo "${ECHO_T}found" >&6; }
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gs_visibility=1
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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{ echo "$as_me:$LINENO: result: not present" >&5
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echo "${ECHO_T}not present" >&6; }
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gs_visibility=0
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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cat >>confdefs.h <<_ACEOF
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#define HAVE_VISIBILITY_ATTRIBUTE $gs_visibility
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_ACEOF
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CFLAGS="$saved_CFLAGS"
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#--------------------------------------------------------------------
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# Check if system has buggy SO_REUSEADDR
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#--------------------------------------------------------------------
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18
configure.ac
18
configure.ac
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@ -391,6 +391,24 @@ else
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AC_MSG_RESULT([not found])
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fi
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AC_MSG_CHECKING(for gcc visibility attribute support)
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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AC_COMPILE_IFELSE([
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#include <stdio.h>
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int foo() __attribute__ ((visibility("internal")));
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int foo(){ return 1; }
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int main(){ return foo(); }],
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AC_MSG_RESULT([found])
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gs_visibility=1,
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AC_MSG_RESULT([not present])
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gs_visibility=0
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)
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AC_DEFINE_UNQUOTED(HAVE_VISIBILITY_ATTRIBUTE,$gs_visibility,
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[Says whether the visibility attribute works])
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CFLAGS="$saved_CFLAGS"
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#--------------------------------------------------------------------
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# Check if system has buggy SO_REUSEADDR
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#--------------------------------------------------------------------
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