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authorH.J. Lu <hjl.tools@gmail.com>2021-01-11 16:26:39 -0800
committerH.J. Lu <hjl.tools@gmail.com>2021-01-11 16:26:51 -0800
commit03c02f3116d75721f917c4155cefb18b940a43ff (patch)
tree36b5214bc5a69ce1860aef06581430a57ee9d063 /libtool.m4
parenteabdd87b2e8d20941d8bfe0b668d6ae4e5dd737f (diff)
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GCC: Check if AR works with --plugin and rc
AR from older binutils doesn't work with --plugin and rc: [hjl@gnu-cfl-2 bin]$ touch foo.c [hjl@gnu-cfl-2 bin]$ ar --plugin /usr/libexec/gcc/x86_64-redhat-linux/10/liblto_plugin.so rc libfoo.a foo.c [hjl@gnu-cfl-2 bin]$ ./ar --plugin /usr/libexec/gcc/x86_64-redhat-linux/10/liblto_plugin.so rc libfoo.a foo.c ./ar: no operation specified [hjl@gnu-cfl-2 bin]$ ./ar --version GNU ar (Linux/GNU Binutils) 2.29.51.0.1.20180112 Copyright (C) 2018 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License version 3 or (at your option) any later version. This program has absolutely no warranty. [hjl@gnu-cfl-2 bin]$ Check if AR works with --plugin and rc before passing --plugin to AR and RANLIB. PR ld/27173 * configure: Regenerated. * libtool.m4 (_LT_CMD_OLD_ARCHIVE): Check if AR works with --plugin and rc before enabling --plugin. config/ PR ld/27173 * gcc-plugin.m4 (GCC_PLUGIN_OPTION): Check if AR works with --plugin and rc before enabling --plugin. libiberty/ PR ld/27173 * configure: Regenerated. zlib/ PR ld/27173 * configure: Regenerated.
Diffstat (limited to 'libtool.m4')
-rw-r--r--libtool.m49
1 files changed, 8 insertions, 1 deletions
diff --git a/libtool.m4 b/libtool.m4
index 3672e95..9a13f3b 100644
--- a/libtool.m4
+++ b/libtool.m4
@@ -1340,7 +1340,14 @@ AC_CHECK_TOOL(AR, ar, false)
test -z "$AR" && AR=ar
if test -n "$plugin_option"; then
if $AR --help 2>&1 | grep -q "\--plugin"; then
- AR="$AR $plugin_option"
+ touch conftest.c
+ $AR $plugin_option rc conftest.a conftest.c
+ if test "$?" != 0; then
+ AC_MSG_WARN([Failed: $AR $plugin_option rc])
+ else
+ AR="$AR $plugin_option"
+ fi
+ rm -f conftest.*
fi
fi
test -z "$AR_FLAGS" && AR_FLAGS=cru