patches/gcc/4.1.2/300-libstdc++-pic.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun May 20 13:48:26 2007 +0000 (2007-05-20)
changeset 112 ea15433daba0
parent 1 eeea35fbf182
permissions -rw-r--r--
Ah! I finally have a progress bar that doesn't stall the build!
- pipe size in Linux is only 8*512=4096 bytes
- pipe size is not setable
- when the feeding process spits out data faster than the eating
process can read it, then the feeding process stalls after 4KiB
of data sent to the pipe
- for us, the progress bar would spawn a sub-shell every line,
and the sub-shell would in turn spawn a 'date' command.
Which was sloooww as hell, and would cause some kind of a
starvation: the pipe was full most of the time, and the
feeding process was stalled all this time.

Now, we use internal variables and a little hack based onan offset
to determine the elapsed time. Much faster this way, but still
CPU-intensive.
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--- gcc-4.1.2.orig/libstdc++-v3/src/Makefile.am	2006-01-10 05:01:00.000000000 +0100
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+++ gcc-4.1.2/libstdc++-v3/src/Makefile.am	2007-03-04 23:32:40.000000000 +0100
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@@ -234,6 +234,12 @@
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 	  $(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CXXFLAGS) $(LDFLAGS) -o $@
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+install-exec-local:
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+ifeq ($(enable_shared),yes)
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+	$(AR) cru libstdc++_pic.a .libs/*.o $(top_builddir)/libsupc++/*.o
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+	$(INSTALL_DATA) libstdc++_pic.a $(DESTDIR)$(toolexeclibdir)
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+endif
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+
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 # Added bits to build debug library.
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 if GLIBCXX_BUILD_DEBUG
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 all-local: build_debug
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--- gcc-4.1.2.orig/libstdc++-v3/src/Makefile.in	2006-01-10 18:14:00.000000000 +0100
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+++ gcc-4.1.2/libstdc++-v3/src/Makefile.in	2007-03-04 23:32:40.000000000 +0100
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@@ -627,7 +627,7 @@
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 install-data-am: install-data-local
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-install-exec-am: install-toolexeclibLTLIBRARIES
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+install-exec-am: install-toolexeclibLTLIBRARIES install-exec-local
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 install-info: install-info-am
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@@ -660,6 +660,7 @@
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 	distclean-libtool distclean-tags distdir dvi dvi-am html \
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 	html-am info info-am install install-am install-data \
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 	install-data-am install-data-local install-exec \
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+	install-exec-local \
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 	install-exec-am install-info install-info-am install-man \
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 	install-strip install-toolexeclibLTLIBRARIES installcheck \
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 	installcheck-am installdirs maintainer-clean \
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@@ -760,6 +761,13 @@
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 install_debug:
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 	(cd ${debugdir} && $(MAKE) \
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 	toolexeclibdir=$(glibcxx_toolexeclibdir)/debug install)
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+
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+install-exec-local:
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+ifeq ($(enable_shared),yes)
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+	$(AR) cru libstdc++_pic.a *.o $(top_builddir)/libsupc++/*.o
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+	$(INSTALL_DATA) libstdc++_pic.a $(DESTDIR)$(toolexeclibdir)
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+endif
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+
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 # Tell versions [3.59,3.63) of GNU make to not export all variables.
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 # Otherwise a system limit (for SysV at least) may be exceeded.
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 .NOEXPORT: