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configure: Use -Bsymbolic-functions if available

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While this is more useful for libraries, some of our plugins with multiple
files and some internal API can also benefit from this.
This commit is contained in:
Sebastian Dröge 2015-12-21 12:32:32 +01:00
parent c589c6db05
commit d774f18fb9
1 changed files with 18 additions and 0 deletions
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18
configure.ac
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@ -171,6 +171,21 @@ AC_SUBST(GSTPB_PREFIX)
dnl Needed by plugins that use g_module_*() API
PKG_CHECK_MODULES(GMODULE_NO_EXPORT, gmodule-no-export-2.0)
dnl Check for -Bsymbolic-functions linker flag used to avoid
dnl intra-library PLT jumps, if available.
AC_ARG_ENABLE(Bsymbolic,
[AS_HELP_STRING([--disable-Bsymbolic],[avoid linking with -Bsymbolic])],,
[SAVED_LDFLAGS="${LDFLAGS}" SAVED_LIBS="${LIBS}"
AC_MSG_CHECKING([for -Bsymbolic-functions linker flag])
LDFLAGS=-Wl,-Bsymbolic-functions
LIBS=
AC_TRY_LINK([], [return 0],
AC_MSG_RESULT(yes)
enable_Bsymbolic=yes,
AC_MSG_RESULT(no)
enable_Bsymbolic=no)
LDFLAGS="${SAVED_LDFLAGS}" LIBS="${SAVED_LIBS}"])
dnl *** set variables based on configure arguments ***
dnl set license and copyright notice
@ -432,6 +447,9 @@ AC_SUBST(GST_LIBS)
dnl LDFLAGS really should only contain flags, not libs - they get added before
dnl whatevertarget_LIBS and -L flags here affect the rest of the linking
GST_ALL_LDFLAGS="-no-undefined"
if test "x${enable_Bsymbolic}" = "xyes"; then
GST_ALL_LDFLAGS="$GST_ALL_LDFLAGS -Wl,-Bsymbolic-functions"
fi
AC_SUBST(GST_ALL_LDFLAGS)
dnl this really should only contain flags, not libs - they get added before