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| author | Giovanni Funchal <gafunchal@gmail.com> | 2008-08-16 15:01:23 +0200 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2008-08-17 17:42:02 -0700 |
| commit | 798a94500230e4d2a1a18f005fe9592454fe451b (patch) | |
| tree | 3e09b66d76f561b5602459959be45d308fd178aa | |
| parent | f5b904db6b02e0ded76732eabe106069a87859fd (diff) | |
| download | git-798a94500230e4d2a1a18f005fe9592454fe451b.tar.gz git-798a94500230e4d2a1a18f005fe9592454fe451b.tar.xz | |
configure: auto detect dynamic library path switches
Most systems (e.g. Linux gcc) use "-Wl,-rpath," to pass to the linker the
runtime dynamic library paths. Some other systems (e.g. Sun, some BSD) use
"-R" etc. This patch adds tests in configure for the three most common
switches (to my best knowledge) which should cover all current platforms
where Git is used.
Signed-Off-By: Giovanni Funchal <gafunchal@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | config.mak.in | 1 | ||||
| -rw-r--r-- | configure.ac | 32 |
2 files changed, 33 insertions, 0 deletions
diff --git a/config.mak.in b/config.mak.in index b77614953..467b4aaee 100644 --- a/config.mak.in +++ b/config.mak.in @@ -3,6 +3,7 @@ CC = @CC@ CFLAGS = @CFLAGS@ +CC_LD_DYNPATH = @CC_LD_DYNPATH@ AR = @AR@ TAR = @TAR@ #INSTALL = @INSTALL@ # needs install-sh or install.sh in sources diff --git a/configure.ac b/configure.ac index 7c2856efc..27bab00a4 100644 --- a/configure.ac +++ b/configure.ac @@ -103,6 +103,38 @@ GIT_PARSE_WITH(tcltk)) AC_MSG_NOTICE([CHECKS for programs]) # AC_PROG_CC([cc gcc]) +# which switch to pass runtime path to dynamic libraries to the linker +AC_CACHE_CHECK([if linker supports -R], ld_dashr, [ + SAVE_LDFLAGS="${LDFLAGS}" + LDFLAGS="${SAVE_LDFLAGS} -R /" + AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [ld_dashr=yes], [ld_dashr=no]) + LDFLAGS="${SAVE_LDFLAGS}" +]) +if test "$ld_dashr" = "yes"; then + AC_SUBST(CC_LD_DYNPATH, [-R]) +else + AC_CACHE_CHECK([if linker supports -Wl,-rpath,], ld_wl_rpath, [ + SAVE_LDFLAGS="${LDFLAGS}" + LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/" + AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [ld_wl_rpath=yes], [ld_wl_rpath=no]) + LDFLAGS="${SAVE_LD_FLAGS}" + ]) + if test "$ld_wl_rpath" = "yes"; then + AC_SUBST(CC_LD_DYNPATH, [-Wl,-rpath,]) + else + AC_CACHE_CHECK([if linker supports -rpath], ld_rpath, [ + SAVE_LDFLAGS="${LDFLAGS}" + LDFLAGS="${SAVE_LDFLAGS} -rpath /" + AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [ld_rpath=yes], [ld_rpath=no]) + LDFLAGS="${SAVE_LD_FLAGS}" + ]) + if test "$ld_rpath" = "yes"; then + AC_SUBST(CC_LD_DYNPATH, [-rpath]) + else + AC_MSG_WARN([linker does not support runtime path to dynamic libraries]) + fi + fi +fi #AC_PROG_INSTALL # needs install-sh or install.sh in sources AC_CHECK_TOOLS(AR, [gar ar], :) AC_CHECK_PROGS(TAR, [gtar tar]) |