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Diffstat (limited to 'src/liblzma/common/common.h')
| -rw-r--r-- | src/liblzma/common/common.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/liblzma/common/common.h b/src/liblzma/common/common.h index 33928c3d..7fb1732a 100644 --- a/src/liblzma/common/common.h +++ b/src/liblzma/common/common.h @@ -34,6 +34,18 @@ #include "lzma.h" +// The extra symbol versioning in the C files may only be used when +// building a shared library. If HAVE_SYMBOL_VERSIONS_LINUX is defined +// to 2 then symbol versioning is done only if also PIC is defined. +// By default Libtool defines PIC when building a shared library and +// doesn't define it when building a static library but it can be +// overriden with --with-pic and --without-pic. configure let's rely +// on PIC if neither --with-pic or --without-pic was used. +#if defined(HAVE_SYMBOL_VERSIONS_LINUX) \ + && (HAVE_SYMBOL_VERSIONS_LINUX == 2 && !defined(PIC)) +# undef HAVE_SYMBOL_VERSIONS_LINUX +#endif + #ifdef HAVE_SYMBOL_VERSIONS_LINUX // To keep link-time optimization (LTO, -flto) working with GCC, // the __symver__ attribute must be used instead of __asm__(".symver ..."). |