The following removes adding -lieee to the link command when -mieee-fp
is specified for GNU targets as suggested by Joseph in the PR. It doesn't
touch m32r so the fix may be incomplete depending on the C library used.
I've added a testcase that makes sure we can link but not functional
tests of -mieee-fp which I suppose exist already (eh...).
Bootstrap and regtest is running on x86_64-unknown-linux-gnu with
glibc 2.27 where the testcase fails before the patch.
OK for trunk and active branches?
Thanks,
Richard.
>From a71f976df0f17790202c0a692920c9d67e009259 Mon Sep 17 00:00:00 2001
From: Richard Guenther <rguent...@suse.de>
Date: Wed, 4 Jul 2018 09:34:14 +0200
Subject: [PATCH] fix-pr84829
2018-07-04 Richard Biener <rguent...@suse.de>
PR target/84829
* config/gnu-user.h (GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC):
Remove -mieee-fp handling.
* gcc.target/i386/pr84829.c: New testcase.
diff --git a/gcc/config/gnu-user.h b/gcc/config/gnu-user.h
index cba3c0b92e3..8620de3e42d 100644
--- a/gcc/config/gnu-user.h
+++ b/gcc/config/gnu-user.h
@@ -123,7 +123,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.
If not, see
#define GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC \
"%{shared:-lc} \
- %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"
+ %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
#define GNU_USER_TARGET_LIB_SPEC \
"%{pthread:-lpthread} " \
diff --git a/gcc/testsuite/gcc.target/i386/pr84829.c
b/gcc/testsuite/gcc.target/i386/pr84829.c
new file mode 100644
index 00000000000..a63a49b1317
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr84829.c
@@ -0,0 +1,7 @@
+/* { dg-do link } */
+/* { dg-options "-mieee-fp" } */
+
+int main()
+{
+ return 0;
+}
