[gcc/devel/lto-offload] aix: Support libsupc++ as a FAT library

[John Ravi]

https://gcc.gnu.org/g:9599c9853a0284789eb8f897a4b5374df694b672

commit 9599c9853a0284789eb8f897a4b5374df694b672
Author: David Edelsohn <dje.gcc@gmail.com>
Date:   Mon Aug 17 20:19:38 2020 -0400

    aix: Support libsupc++ as a FAT library
    
    Build libstdc++++ static library libsupc++.a as a FAT 32/64 bit library.
    
    libstdc++-v3/ChangeLog:
    
    2020-08-18  David Edelsohn  <dje.gcc@gmail.com>
                Clement Chigot  <clement.chigot@atos.net>
    
            * config/os/aix/t-aix: Add complementary mode object files to
            libsupc++.a

Diff:
---
 libstdc++-v3/config/os/aix/t-aix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libstdc++-v3/config/os/aix/t-aix b/libstdc++-v3/config/os/aix/t-aix
index a5d58fab474..3e36bc8308e 100644
--- a/libstdc++-v3/config/os/aix/t-aix
+++ b/libstdc++-v3/config/os/aix/t-aix
@@ -2,8 +2,11 @@ ifeq ($(MULTIBUILDTOP),)
 BITS=$(shell if test -z "`$(CC) -x c -E /dev/null -g3 -o - | grep 64BIT`" ; then \
     echo '64'; else echo '32'; fi)
 MAJOR=$(firstword $(subst :, ,$(libtool_VERSION)))
+STOBJS=$(shell ar -X$(BITS) t ../ppc$(BITS)/$(PACKAGE)-v3/libsupc++/.libs/libsupc++.a)
 all-local:
 	ar -X$(BITS) rc src/.libs/$(PACKAGE).a ../ppc$(BITS)/$(PACKAGE)-v3/src/.libs/$(PACKAGE).so.$(MAJOR)
 	ar -X$(BITS) rc ../pthread/$(PACKAGE)-v3/src/.libs/$(PACKAGE).a ../pthread/ppc$(BITS)/$(PACKAGE)-v3/src/.libs/$(PACKAGE).so.$(MAJOR)
+	ar -X$(BITS) rc libsupc++/.libs/libsupc++.a ${addprefix ../ppc$(BITS)/$(PACKAGE)-v3/libsupc++/,$(STOBJS)}
+	ar -X$(BITS) rc ../pthread/$(PACKAGE)-v3/libsupc++/.libs/libsupc++.a ${addprefix ../pthread/ppc$(BITS)/$(PACKAGE)-v3/libsupc++/,$(STOBJS)}
 endif