[committed] libstdc++: Fix installation of python hooks [PR 99453]

[Jonathan Wakely]

When no shared library is installed, the new code to determine the name
of the -gdb.py file yields an empty string. Use the name of the static
library in that case.

libstdc++-v3/ChangeLog:

	PR libstdc++/99453
	* python/Makefile.am: Use archive name for printer hook if no
	dynamic library name is available.
	* python/Makefile.in: Regenerate.

Tested x86_64-linux. Committed to trunk. This is needed for gcc-11
too.

-------------- next part --------------
commit 9f7bc160b4a0f27dce248d1226e3ae7104b0e67b
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Jun 1 11:00:16 2021

    libstdc++: Fix installation of python hooks [PR 99453]
    
    When no shared library is installed, the new code to determine the name
    of the -gdb.py file yields an empty string. Use the name of the static
    library in that case.
    
    libstdc++-v3/ChangeLog:
    
            PR libstdc++/99453
            * python/Makefile.am: Use archive name for printer hook if no
            dynamic library name is available.
            * python/Makefile.in: Regenerate.

diff --git a/libstdc++-v3/python/Makefile.am b/libstdc++-v3/python/Makefile.am
index 0c2b207b86e..8efefa5725c 100644
--- a/libstdc++-v3/python/Makefile.am
+++ b/libstdc++-v3/python/Makefile.am
@@ -48,5 +48,9 @@ install-data-local: gdb.py
 ## the correct name.
 	@libname=`sed -ne "/^library_names=/{s/.*='//;s/'$$//;s/ .*//;p;}" \
 	          $(DESTDIR)$(toolexeclibdir)/libstdc++.la`; \
+	if [ -z "$$libname" ]; then \
+	  libname=`sed -ne "/^old_library=/{s/.*='//;s/'$$//;s/ .*//;p;}" \
+		  $(DESTDIR)$(toolexeclibdir)/libstdc++.la`; \
+	fi; \
 	echo " $(INSTALL_DATA) gdb.py $(DESTDIR)$(toolexeclibdir)/$$libname-gdb.py"; \
 	$(INSTALL_DATA) gdb.py $(DESTDIR)$(toolexeclibdir)/$$libname-gdb.py