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@@ -534,6 +534,11 @@ tryldflag LDFLAGS_AUTO -Wl,--hash-style=both
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# runtime library; implementation error is also a possibility.
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tryldflag LDFLAGS_AUTO -Wl,--no-undefined
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+# Avoid exporting symbols from compiler runtime libraries. They
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+# should be hidden anyway, but some toolchains including old gcc
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+# versions built without shared library support and pcc are broken.
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+tryldflag LDFLAGS_AUTO -Wl,--exclude-libs=ALL
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+
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test "$shared" = "no" || {
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# Disable dynamic linking if ld is broken and can't do -Bsymbolic-functions
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LDFLAGS_DUMMY=
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Rich Felker