This new version now checks that version script with syntax error are rejected, it probably led to mis-detect the option as supported when it was actually just ignored with at most a warning; it also now implement caching of the result to speed-up re-run of configure if user enabled it.
Signed-off-by: Christophe CURIS <[email protected]> --- m4/ld-version-script.m4 | 38 +++++++++++++++++++++----------------- 1 file changed, 21 insertions(+), 17 deletions(-) diff --git a/m4/ld-version-script.m4 b/m4/ld-version-script.m4 index 8fd8c89..211d67b 100644 --- a/m4/ld-version-script.m4 +++ b/m4/ld-version-script.m4 @@ -1,5 +1,5 @@ -# ld-version-script.m4 serial 2 -dnl Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc. +# ld-version-script.m4 serial 4 +dnl Copyright (C) 2008-2015 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -18,14 +18,18 @@ dnl From Simon Josefsson AC_DEFUN([gl_LD_VERSION_SCRIPT], [ AC_ARG_ENABLE([ld-version-script], - AS_HELP_STRING([--enable-ld-version-script], - [enable linker version script (default is enabled when possible)]), - [have_ld_version_script=$enableval], []) - if test -z "$have_ld_version_script"; then - AC_MSG_CHECKING([if LD -Wl,--version-script works]) - save_LDFLAGS="$LDFLAGS" - LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map" - cat > conftest.map <<EOF + [AS_HELP_STRING([--enable-ld-version-script], + [enable linker version script (default is enabled when possible)])], + [have_ld_version_script=$enableval], + [AC_CACHE_CHECK([if LD -Wl,--version-script works], + [gl_cv_sys_ld_version_script], + [gl_cv_sys_ld_version_script=no + save_LDFLAGS=$LDFLAGS + LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map" + echo foo >conftest.map + AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], + [], + [cat > conftest.map <<EOF VERS_1 { global: sym; }; @@ -34,11 +38,11 @@ VERS_2 { global: sym; } VERS_1; EOF - AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], - [have_ld_version_script=yes], [have_ld_version_script=no]) - rm -f conftest.map - LDFLAGS="$save_LDFLAGS" - AC_MSG_RESULT($have_ld_version_script) - fi - AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes") + AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], + [gl_cv_sys_ld_version_script=yes])]) + rm -f conftest.map + LDFLAGS=$save_LDFLAGS]) + have_ld_version_script=$gl_cv_sys_ld_version_script]) + AM_CONDITIONAL([HAVE_LD_VERSION_SCRIPT], + [test "$have_ld_version_script" = yes]) ]) -- 2.1.4 -- To unsubscribe, send mail to [email protected].
