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| author | Albrecht Schlosser <albrechts.fltk@online.de> | 2015-02-17 12:47:07 +0000 |
|---|---|---|
| committer | Albrecht Schlosser <albrechts.fltk@online.de> | 2015-02-17 12:47:07 +0000 |
| commit | 3fe71d118c861bff12ba243a350a94133c526d9d (patch) | |
| tree | 839df33f56f49b08fad55c5c9142fb59d037367b | |
| parent | 4d823c0d4a513c6b8dc57394e428d3347a96c351 (diff) | |
Add linker option -Wl,-no-undefined if supported (with configure check).
Experimental. Thanks to Greg for finding this option.
If this option is supported by the linker, it is used when linking shared
libraries like libfltk_gl.so. With this option linking of the shared library
fails instead of postponing failure to linking programs with this library,
if any undefined references exist in this library. See STR #3191.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10582 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
| -rw-r--r-- | configure.in | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 7144aba8f..c4b9be54a 100644 --- a/configure.in +++ b/configure.in @@ -1194,6 +1194,18 @@ if test -n "$GCC"; then AC_MSG_RESULT(no)) CFLAGS="$OLDCFLAGS" +dnl Experimental (as of 17 Feb 2015): +dnl Make sure that shared libraries don't have undefined references + # See if ld supports -no-undefined... + AC_MSG_CHECKING(if ld supports -no-undefined) + OLDLDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS -Wl,-no-undefined" + AC_TRY_LINK(,, + [DSOFLAGS="$DSOFLAGS -Wl,-no-undefined"] + AC_MSG_RESULT(yes), + AC_MSG_RESULT(no)) + LDFLAGS="$OLDLDFLAGS" + # See if ld supports -Bsymbolic-functions... AC_MSG_CHECKING(if ld supports -Bsymbolic-functions) OLDLDFLAGS="$LDFLAGS" |