On OpenBSD, GCC accepts "-R${dir}" and "-R ${dir}" and passes them to
the linker. Attached patch adds similar support to Clang, and
includes a regress test. See also bug 18164.
I'd appreciate if a CFE developer would commit this patch for me.
Thanks!
(Looking at GCC 4.2.1's source code, it appears that GCC accepts the
same flag on FreeBSD, NetBSD, and Solaris too, but I don't have any of
those available to test against.)
Index: include/clang/Driver/Options.td
===================================================================
--- include/clang/Driver/Options.td (revision 197438)
+++ include/clang/Driver/Options.td (working copy)
@@ -246,7 +246,7 @@ def Qn : Flag<["-"], "Qn">;
def Qunused_arguments : Flag<["-"], "Qunused-arguments">, Flags<[DriverOption,
CoreOption]>,
HelpText<"Don't emit warning for unused driver arguments">;
def Q : Flag<["-"], "Q">;
-def R : Flag<["-"], "R">;
+def R : JoinedOrSeparate<["-"], "R">;
def S : Flag<["-"], "S">, Flags<[DriverOption,CC1Option]>, Group<Action_Group>,
HelpText<"Only run preprocess and compilation steps">;
def Tbss : JoinedOrSeparate<["-"], "Tbss">, Group<T_Group>;
Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp (revision 197438)
+++ lib/Driver/Tools.cpp (working copy)
@@ -5596,6 +5596,7 @@ void openbsd::Link::ConstructJob(Compilation &C, c
"/4.2.1"));
Args.AddAllArgs(CmdArgs, options::OPT_L);
+ Args.AddAllArgs(CmdArgs, options::OPT_R);
Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
Args.AddAllArgs(CmdArgs, options::OPT_e);
Args.AddAllArgs(CmdArgs, options::OPT_s);
Index: test/Driver/openbsd.c
===================================================================
--- test/Driver/openbsd.c (revision 197438)
+++ test/Driver/openbsd.c (working copy)
@@ -15,6 +15,10 @@
// RUN: | FileCheck --check-prefix=CHECK-LD-S %s
// RUN: %clang -no-canonical-prefixes -target i686-pc-openbsd -t %s -### 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-LD-T %s
+// RUN: %clang -no-canonical-prefixes -target i686-pc-openbsd -R /foo %s -###
2>&1 \
+// RUN: | FileCheck --check-prefix=CHECK-LD-BIGR %s
+// RUN: %clang -no-canonical-prefixes -target i686-pc-openbsd -R/foo %s -###
2>&1 \
+// RUN: | FileCheck --check-prefix=CHECK-LD-BIGR %s
// RUN: %clang -no-canonical-prefixes -target i686-pc-openbsd -Z %s -### 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-LD-Z %s
// RUN: %clang -no-canonical-prefixes -target mips64-unknown-openbsd %s -###
2>&1 \
@@ -27,6 +31,8 @@
// CHECK-LD-S: ld{{.*}}" "-e" "__start" "--eh-frame-hdr" "-Bdynamic"
"-dynamic-linker" "{{.*}}ld.so" "-o" "a.out" "{{.*}}crt0.o" "{{.*}}crtbegin.o"
"-L{{.*}}" "-s" "{{.*}}.o" "-lgcc" "-lc" "-lgcc" "{{.*}}crtend.o"
// CHECK-LD-T: clang{{.*}}" "-cc1" "-triple" "i686-pc-openbsd"
// CHECK-LD-T: ld{{.*}}" "-e" "__start" "--eh-frame-hdr" "-Bdynamic"
"-dynamic-linker" "{{.*}}ld.so" "-o" "a.out" "{{.*}}crt0.o" "{{.*}}crtbegin.o"
"-L{{.*}}" "-t" "{{.*}}.o" "-lgcc" "-lc" "-lgcc" "{{.*}}crtend.o"
+// CHECK-LD-BIGR: clang{{.*}}" "-cc1" "-triple" "i686-pc-openbsd"
+// CHECK-LD-BIGR: ld{{.*}}" "-e" "__start" "--eh-frame-hdr" "-Bdynamic"
"-dynamic-linker" "{{.*}}ld.so" "-o" "a.out" "{{.*}}crt0.o" "{{.*}}crtbegin.o"
"-L{{.*}}" "-R" "/foo" "{{.*}}.o" "-lgcc" "-lc" "-lgcc" "{{.*}}crtend.o"
// CHECK-LD-Z: clang{{.*}}" "-cc1" "-triple" "i686-pc-openbsd"
// CHECK-LD-Z: ld{{.*}}" "-e" "__start" "--eh-frame-hdr" "-Bdynamic"
"-dynamic-linker" "{{.*}}ld.so" "-o" "a.out" "{{.*}}crt0.o" "{{.*}}crtbegin.o"
"-L{{.*}}" "-Z" "{{.*}}.o" "-lgcc" "-lc" "-lgcc" "{{.*}}crtend.o"
// CHECK-MIPS64-LD: clang{{.*}}" "-cc1" "-triple" "mips64-unknown-openbsd"
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