* libltdl/m4/libtool.m4 (_LT_LINKER_SHLIBS) [cygwin*|mingw*|pw32*|cegcc*]: Define export_dynamic_flag_spec as -Wl,--export-all-symbols, as required by GNU ld for PE-COFF.
Original patch by Yaakov Selkowitz. As he explained: On Cygwin, the --export-all-symbols linker flag is required; --export-dynamic has no effect (see http://sourceware.org/bugzilla/show_bug.cgi?id=6744). This patch fixes two problems: (1) LT_SYS_DLOPEN_SELF returns a false negative; (2) Using the -export-dynamic libtool flag does not affect the resulting binary. Tested in combination with several other cygwin patches, as part of the recent cygwin "official" 2.2.7a-N libtool release(s): http://cygwin.com/ml/cygwin-announce/2009-03/msg00080.html http://cygwin.com/ml/cygwin-announce/2009-03/msg00081.html No regressions. Okay to push? --- libltdl/m4/libtool.m4 | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/libltdl/m4/libtool.m4 b/libltdl/m4/libtool.m4 index 477f6e3..15612c0 100644 --- a/libltdl/m4/libtool.m4 +++ b/libltdl/m4/libtool.m4 @@ -4275,6 +4275,7 @@ _LT_EOF # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless, # as there is no search path for DLLs. _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-all-symbols' _LT_TAGVAR(allow_undefined_flag, $1)=unsupported _LT_TAGVAR(always_export_symbols, $1)=no _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes -- 1.6.1.2