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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 12:34:56 +01:00
parent d38536ab18
commit a71cd000fd
1 changed files with 18 additions and 0 deletions
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18
configure.ac
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@ -311,6 +311,21 @@ fi
AM_CONDITIONAL(HAVE_GTK, test "x$HAVE_GTK" = "xyes") AM_CONDITIONAL(HAVE_GTK, test "x$HAVE_GTK" = "xyes")
AM_CONDITIONAL(HAVE_GTK_X11, test "x$HAVE_GTK_X11" = "xyes") AM_CONDITIONAL(HAVE_GTK_X11, test "x$HAVE_GTK_X11" = "xyes")
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 building of benchmarks dnl building of benchmarks
AC_ARG_ENABLE(benchmarks, AC_ARG_ENABLE(benchmarks,
AS_HELP_STRING([--disable-benchmarks],[disable building benchmarks apps]), AS_HELP_STRING([--disable-benchmarks],[disable building benchmarks apps]),
@ -392,6 +407,9 @@ AC_SUBST(GST_LIBS)
dnl LDFLAGS really should only contain flags, not libs - they get added before 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 dnl whatevertarget_LIBS and -L flags here affect the rest of the linking
GST_ALL_LDFLAGS="-no-undefined" 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) AC_SUBST(GST_ALL_LDFLAGS)
dnl GST_LIB_LDFLAGS dnl GST_LIB_LDFLAGS