diff options
| -rwxr-xr-x | configure | 147 | ||||
| -rw-r--r-- | configure.ac | 34 |
2 files changed, 177 insertions, 4 deletions
@@ -1,5 +1,5 @@ #! /bin/sh -# From configure.ac Revision: 338139 . +# From configure.ac Revision: 339721 . # Guess values for system-dependent variables and create Makefiles. # Generated by GNU Autoconf 2.63 for asterisk trunk. # @@ -22857,6 +22857,17 @@ CFLAGS="$saved_CFLAGS" +# Support weak symbols on a platform specific basis. The Mac OS X +# (Darwin) support must be isolated from the other platforms because +# it has caused other platforms to fail. +# +case "${OSARCH}" in + darwin*) + # Allow weak symbol support on Darwin platforms only because there + # is active community support for it. + # However, Darwin seems to break weak symbols for each new version. + # + { $as_echo "$as_me:$LINENO: checking for compiler 'attribute weak_import' support" >&5 $as_echo_n "checking for compiler 'attribute weak_import' support... " >&6; } saved_CFLAGS="$CFLAGS" @@ -22975,6 +22986,10 @@ CFLAGS="$saved_CFLAGS" + # Several other platforms including Linux have GCC versions that + # define the weak attribute. However, this attribute is only + # setup for use in the code by Darwin. + { $as_echo "$as_me:$LINENO: checking for compiler 'attribute weak' support" >&5 $as_echo_n "checking for compiler 'attribute weak' support... " >&6; } saved_CFLAGS="$CFLAGS" @@ -23092,6 +23107,134 @@ fi CFLAGS="$saved_CFLAGS" + ;; + linux-gnu) + # Primarily support weak symbols on Linux platforms. + # + +{ $as_echo "$as_me:$LINENO: checking for compiler 'attribute weakref' support" >&5 +$as_echo_n "checking for compiler 'attribute weakref' support... " >&6; } +saved_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -Wall -Wno-unused -Werror" +PBX_WEAKREF=0 + +if test "xweakref("foo")" = "x" +then +cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ +static void __attribute__((weakref)) *test(void *muffin, ...) {return (void *) 0;} +int +main () +{ + + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext +if { (ac_try="$ac_compile" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\"" +$as_echo "$ac_try_echo") >&5 + (eval "$ac_compile") 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && { + test -z "$ac_c_werror_flag" || + test ! -s conftest.err + } && test -s conftest.$ac_objext; then + { $as_echo "$as_me:$LINENO: result: yes" >&5 +$as_echo "yes" >&6; } + PBX_WEAKREF=1 + +cat >>confdefs.h <<_ACEOF +#define HAVE_ATTRIBUTE_weakref 1 +_ACEOF + +else + $as_echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + + { $as_echo "$as_me:$LINENO: result: no" >&5 +$as_echo "no" >&6; } + +fi + +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +else +cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ +static void __attribute__((weakref("foo"))) *test(void *muffin, ...) {return (void *) 0;} +int +main () +{ + + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext +if { (ac_try="$ac_compile" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\"" +$as_echo "$ac_try_echo") >&5 + (eval "$ac_compile") 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && { + test -z "$ac_c_werror_flag" || + test ! -s conftest.err + } && test -s conftest.$ac_objext; then + { $as_echo "$as_me:$LINENO: result: yes" >&5 +$as_echo "yes" >&6; } + PBX_WEAKREF=1 + +cat >>confdefs.h <<_ACEOF +#define HAVE_ATTRIBUTE_weakref 1 +_ACEOF + +else + $as_echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + + { $as_echo "$as_me:$LINENO: result: no" >&5 +$as_echo "no" >&6; } + +fi + +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi + + +CFLAGS="$saved_CFLAGS" + + + ;; + *) + # Allow weak symbols on other platforms. However, any problems + # with this feature on other platforms must be fixed by the + # community. + # { $as_echo "$as_me:$LINENO: checking for compiler 'attribute weakref' support" >&5 $as_echo_n "checking for compiler 'attribute weakref' support... " >&6; } @@ -23210,6 +23353,8 @@ fi CFLAGS="$saved_CFLAGS" + ;; +esac { $as_echo "$as_me:$LINENO: checking for -ffunction-sections support" >&5 $as_echo_n "checking for -ffunction-sections support... " >&6; } diff --git a/configure.ac b/configure.ac index f84b92db0..e239e8a1a 100644 --- a/configure.ac +++ b/configure.ac @@ -898,9 +898,37 @@ AST_GCC_ATTRIBUTE(always_inline) AST_GCC_ATTRIBUTE(deprecated) AST_GCC_ATTRIBUTE(sentinel) AST_GCC_ATTRIBUTE(warn_unused_result) -AST_GCC_ATTRIBUTE(weak_import, [], [], PBX_WEAKREF) -AST_GCC_ATTRIBUTE(weak, [], [], PBX_WEAKREF) -AST_GCC_ATTRIBUTE(weakref, [weakref("foo")], static, PBX_WEAKREF) + +# Support weak symbols on a platform specific basis. The Mac OS X +# (Darwin) support must be isolated from the other platforms because +# it has caused other platforms to fail. +# +case "${OSARCH}" in + darwin*) + # Allow weak symbol support on Darwin platforms only because there + # is active community support for it. + # However, Darwin seems to break weak symbols for each new version. + # + AST_GCC_ATTRIBUTE(weak_import, [], [], PBX_WEAKREF) + + # Several other platforms including Linux have GCC versions that + # define the weak attribute. However, this attribute is only + # setup for use in the code by Darwin. + AST_GCC_ATTRIBUTE(weak, [], [], PBX_WEAKREF) + ;; + linux-gnu) + # Primarily support weak symbols on Linux platforms. + # + AST_GCC_ATTRIBUTE(weakref, [weakref("foo")], static, PBX_WEAKREF) + ;; + *) + # Allow weak symbols on other platforms. However, any problems + # with this feature on other platforms must be fixed by the + # community. + # + AST_GCC_ATTRIBUTE(weakref, [weakref("foo")], static, PBX_WEAKREF) + ;; +esac AC_MSG_CHECKING(for -ffunction-sections support) saved_CFLAGS="${CFLAGS}" |