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Silence some warnings and allow passing down some feature flags to the linker. 

Patch by Brad Smith.

llvm-svn: 171329
This commit is contained in:
Rafael Espindola 2012-12-31 22:41:36 +00:00
parent 3fa2010c7d
commit aadd30ec52
2 changed files with 30 additions and 0 deletions
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12
clang/lib/Driver/Tools.cpp
View File

@ -4682,6 +4682,14 @@ void openbsd::Link::ConstructJob(Compilation &C, const JobAction &JA,
const Driver &D = getToolChain().getDriver();
ArgStringList CmdArgs;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo". Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_w);
if ((!Args.hasArg(options::OPT_nostdlib)) &&
(!Args.hasArg(options::OPT_shared))) {
CmdArgs.push_back("-e");
@ -4736,6 +4744,10 @@ void openbsd::Link::ConstructJob(Compilation &C, const JobAction &JA,
Args.AddAllArgs(CmdArgs, options::OPT_L);
Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
Args.AddAllArgs(CmdArgs, options::OPT_e);
Args.AddAllArgs(CmdArgs, options::OPT_s);
Args.AddAllArgs(CmdArgs, options::OPT_t);
Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag);
Args.AddAllArgs(CmdArgs, options::OPT_r);
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);

18
clang/test/Driver/openbsd.c
View File

@ -7,3 +7,21 @@
// RUN: | FileCheck --check-prefix=CHECK-PG %s
// CHECK-PG: clang{{.*}}" "-cc1" "-triple" "i686-pc-openbsd"
// CHECK-PG: ld{{.*}}" "-e" "__start" "--eh-frame-hdr" "-Bdynamic" "-dynamic-linker" "{{.*}}ld.so" "-o" "a.out" "{{.*}}crt0.o" "{{.*}}crtbegin.o" "{{.*}}.o" "-lgcc" "-lpthread_p" "-lc_p" "-lgcc" "{{.*}}crtend.o"
// Check that the new linker flags are passed to OpenBSD
// RUN: %clang -no-canonical-prefixes -target i686-pc-openbsd -r %s -### 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-LD-R %s
// RUN: %clang -no-canonical-prefixes -target i686-pc-openbsd -s %s -### 2>&1 \
// 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 -Z %s -### 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-LD-Z %s
// CHECK-LD-R: clang{{.*}}" "-cc1" "-triple" "i686-pc-openbsd"
// CHECK-LD-R: ld{{.*}}" "-e" "__start" "--eh-frame-hdr" "-Bdynamic" "-dynamic-linker" "{{.*}}ld.so" "-o" "a.out" "{{.*}}crt0.o" "{{.*}}crtbegin.o" "-L{{.*}}" "-r" "{{.*}}.o" "-lgcc" "-lc" "-lgcc" "{{.*}}crtend.o"
// CHECK-LD-S: clang{{.*}}" "-cc1" "-triple" "i686-pc-openbsd"
// 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-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"