diff options
| author | Guillem Jover <guillem@hadrons.org> | 2019-11-16 00:04:18 +0100 |
|---|---|---|
| committer | Guillem Jover <guillem@hadrons.org> | 2020-12-21 17:43:11 +0100 |
| commit | 3d6b6ead64d0c822790fb017c1ad97676af5c3b9 (patch) | |
| tree | 1e40a48cdf100744bc5f36f5057a773e4a53d1f6 | |
| parent | eb445425ff4559070328410574b135dcda4a96e3 (diff) | |
build: Detect support for --version-script in ld
| -rw-r--r-- | configure.ac | 19 | ||||
| -rw-r--r-- | src/Makefile.am | 5 |
2 files changed, 23 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 6e9496d..e8d4c5f 100644 --- a/configure.ac +++ b/configure.ac @@ -27,6 +27,25 @@ AC_SYS_LARGEFILE LT_INIT +AC_CACHE_CHECK([if ld supports --version-script flag], + [libbsd_cv_version_script], [ + echo "{ global: symbol; local: *; };" >conftest.map + save_LDFLAGS=$LDFLAGS + LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map" + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([], []) + ], [ + libbsd_cv_version_script=yes + ], [ + libbsd_cv_version_script=no + ]) + LDFLAGS="$save_LDFLAGS" + rm -f conftest.map + ] +) +AM_CONDITIONAL([HAVE_LINKER_VERSION_SCRIPT], + [test "x$libbsd_cv_version_script" = "xyes"]) + # Checks for programs. AC_PROG_CC AC_PROG_INSTALL diff --git a/src/Makefile.am b/src/Makefile.am index 8384b92..c4229cf 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -65,8 +65,11 @@ libbsd_la_LIBADD = \ $(ARC4RANDOM_ATFORK_LIBS) \ $(nil) libbsd_la_LDFLAGS = \ - -Wl,--version-script=$(srcdir)/libbsd.map \ -version-number $(LIBBSD_ABI) +if HAVE_LINKER_VERSION_SCRIPT +libbsd_la_LDFLAGS += \ + -Wl,--version-script=$(srcdir)/libbsd.map +endif libbsd_la_SOURCES = \ arc4random.c \ arc4random.h \ |