[PATCH] PR libstdc++/85442 fix duplicate debuginfo for cxx11-ios_failure.cc

[Jonathan Wakely]

The fix for PR 85222 ends up generating duplicate debuginfo sections,
because we compile the .cc file and then compile the .s file. This
adds -g0 to the second step so we don't generate debuginfo again.

I've verified that we still have debuginfo for the file and can step
through the code when using the $prefix/lib64/debug/libstdc++.so.6
version of the library.

2018-04-18  Jonathan Wakely  <jwakely@redhat.com>
                Jakub Jelinek  <jakub@redhat.com>

            PR libstdc++/85442
            * src/c++11/Makefile.am: Don't generate debuginfo again for
            cxx11-ios_failure-lt.s and cxx11-ios_failure.s files.
            * src/c++11/Makefile.in: Regenerate.

Tested powerpc64le-linux, committed to trunk. Backport to gcc-7-branch
to follow.
-------------- next part --------------
commit 55c94164faf1f124b5c88067ead6871f383fb319
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed Apr 18 12:27:11 2018 +0100

    PR libstdc++/85442 fix duplicate debuginfo for cxx11-ios_failure.cc
    
    2018-04-18  Jonathan Wakely  <jwakely@redhat.com>
                Jakub Jelinek  <jakub@redhat.com>
    
            PR libstdc++/85442
            * src/c++11/Makefile.am: Don't generate debuginfo again for
            cxx11-ios_failure-lt.s and cxx11-ios_failure.s files.
            * src/c++11/Makefile.in: Regenerate.

diff --git a/libstdc++-v3/src/c++11/Makefile.am b/libstdc++-v3/src/c++11/Makefile.am
index cdc49bb7f9b..91bf6f8d642 100644
--- a/libstdc++-v3/src/c++11/Makefile.am
+++ b/libstdc++-v3/src/c++11/Makefile.am
@@ -141,9 +141,9 @@ cxx11-ios_failure.s: cxx11-ios_failure.cc
 	-rm -f tmp-$@
 
 cxx11-ios_failure.lo: cxx11-ios_failure-lt.s
-	$(LTCXXCOMPILE) -c $< -o $@
+	$(LTCXXCOMPILE) -g0 -c $< -o $@
 cxx11-ios_failure.o: cxx11-ios_failure.s
-	$(CXXCOMPILE) -c $<
+	$(CXXCOMPILE) -g0 -c $<
 endif
 
 # AM_CXXFLAGS needs to be in each subdirectory so that it can be