Add support for using gcc's visibility pragma to treat all function and
method declarations as "hidden" unless declared otherwise. Create wrappers
for system headers that cause them to be treated as default-visibility
declarations. This gives a substantial code size and performance win on
compilers that support it. r=darin sr=dbaron.
Modified Files:
configure configure.in config/Makefile.in
config/autoconf.mk.in config/config.mk pr/include/prtypes.h
pr/src/md/unix/uxproces.c pr/tests/sel_spd.c
Added Files:
config/gcc_hidden.h config/make-system-wrappers.pl
config/system-headers
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