[gcc r12-3004] Darwin: Handle the -rpath command line option.

[gcc r12-3004] Darwin: Handle the -rpath command line option.

[Iain D Sandoe]

https://gcc.gnu.org/g:15bdae016654f63a36e49a37c9d26282bebb1da9

commit r12-3004-g15bdae016654f63a36e49a37c9d26282bebb1da9
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Sun Mar 28 14:48:17 2021 +0100

    Darwin: Handle the -rpath command line option.
    
    This handles the command line '-rpath' option by passing it through
    to the static linker.
    
    Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
    
    gcc/ChangeLog:
    
            * config.gcc: Include rpath.opt for Darwin.
            * config/darwin.h (DRIVER_SELF_SPECS): Handle -rpath.

Diff:
---
 gcc/config.gcc      | 2 +-
 gcc/config/darwin.h | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index d9bfbfdc0d2..eb232df6df4 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -700,7 +700,7 @@ case ${target} in
   tm_file="${tm_file} ${cpu_type}/darwin.h"
   tm_p_file="${tm_p_file} darwin-protos.h"
   target_gtfiles="$target_gtfiles \$(srcdir)/config/darwin.c"
-  extra_options="${extra_options} darwin.opt"
+  extra_options="${extra_options} rpath.opt darwin.opt"
   c_target_objs="${c_target_objs} darwin-c.o"
   cxx_target_objs="${cxx_target_objs} darwin-c.o"
   d_target_objs="${d_target_objs} darwin-d.o"
diff --git a/gcc/config/darwin.h b/gcc/config/darwin.h
index 20d6b1e9c05..b1be561e854 100644
--- a/gcc/config/darwin.h
+++ b/gcc/config/darwin.h
@@ -132,6 +132,7 @@ extern GTY(()) int darwin_ms_struct;
 "%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform} \
    %<gsplit-dwarf",							\
 "%{gused:-g -feliminate-unused-debug-symbols} %<gused",			\
+"%{rpath*: -Xlinker -rpath -Xlinker %*}",					\
 "%{shared:-Zdynamiclib} %<shared",					\
 "%{static:%{Zdynamic:%e conflicting code gen style switches are used}}",\
 "%{y*:%nthe y option is obsolete and ignored} %<y*",			\
@@ -238,7 +239,7 @@ extern GTY(()) int darwin_ms_struct;
     DARWIN_NOPIE_SPEC \
     DARWIN_RDYNAMIC \
     DARWIN_NOCOMPACT_UNWIND \
-    "}}}}}}} %<pie %<no-pie %<rdynamic %<X "
+    "}}}}}}} %<pie %<no-pie %<rdynamic %<X %<rpath "
 
 /* Spec that controls whether the debug linker is run automatically for
    a link step.  This needs to be done if there is a source file on the