Author: phosek Date: Sat Feb 16 17:02:40 2019 New Revision: 354208 URL: http://llvm.org/viewvc/llvm-project?rev=354208&view=rev Log: [Driver][Fuchsia] Support -nolibc flag
This can be used to disable libc linking. This flag is supported by GCC since version 9 as well as some Clang target toolchains. This change also includes tests for all -no* flags which previously weren't covered. Differential Revision: https://reviews.llvm.org/D58325 Modified: cfe/trunk/lib/Driver/ToolChains/Fuchsia.cpp cfe/trunk/test/Driver/fuchsia.c cfe/trunk/test/Driver/fuchsia.cpp Modified: cfe/trunk/lib/Driver/ToolChains/Fuchsia.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/Fuchsia.cpp?rev=354208&r1=354207&r2=354208&view=diff ============================================================================== --- cfe/trunk/lib/Driver/ToolChains/Fuchsia.cpp (original) +++ cfe/trunk/lib/Driver/ToolChains/Fuchsia.cpp Sat Feb 16 17:02:40 2019 @@ -148,7 +148,8 @@ void fuchsia::Linker::ConstructJob(Compi if (Args.hasArg(options::OPT_fsplit_stack)) CmdArgs.push_back("--wrap=pthread_create"); - CmdArgs.push_back("-lc"); + if (!Args.hasArg(options::OPT_nolibc)) + CmdArgs.push_back("-lc"); } C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); Modified: cfe/trunk/test/Driver/fuchsia.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/fuchsia.c?rev=354208&r1=354207&r2=354208&view=diff ============================================================================== --- cfe/trunk/test/Driver/fuchsia.c (original) +++ cfe/trunk/test/Driver/fuchsia.c Sat Feb 16 17:02:40 2019 @@ -53,6 +53,27 @@ // CHECK-RELOCATABLE-NOT: "--build-id" // CHECK-RELOCATABLE: "-r" +// RUN: %clang %s -### --target=x86_64-fuchsia -nodefaultlibs -fuse-ld=lld 2>&1 \ +// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \ +// RUN: | FileCheck %s -check-prefix=CHECK-NODEFAULTLIBS +// CHECK-NODEFAULTLIBS: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]" +// CHECK-NODEFAULTLIBS-NOT: "[[RESOURCE_DIR]]{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}lib{{/|\\\\}}libclang_rt.builtins.a" +// CHECK-NODEFAULTLIBS-NOT: "-lc" + +// RUN: %clang %s -### --target=x86_64-fuchsia -nostdlib -fuse-ld=lld 2>&1 \ +// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \ +// RUN: | FileCheck %s -check-prefix=CHECK-NOSTDLIB +// CHECK-NOSTDLIB: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]" +// CHECK-NOSTDLIB-NOT: "[[RESOURCE_DIR]]{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}lib{{/|\\\\}}libclang_rt.builtins.a" +// CHECK-NOSTDLIB-NOT: "-lc" + +// RUN: %clang %s -### --target=x86_64-fuchsia -nolibc -fuse-ld=lld 2>&1 \ +// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \ +// RUN: | FileCheck %s -check-prefix=CHECK-NOLIBC +// CHECK-NOLIBC: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]" +// CHECK-NOLIBC: "[[RESOURCE_DIR]]{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}lib{{/|\\\\}}libclang_rt.builtins.a" +// CHECK-NOLIBC-NOT: "-lc" + // RUN: %clang %s -### --target=x86_64-fuchsia \ // RUN: -fsanitize=safe-stack 2>&1 \ // RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \ Modified: cfe/trunk/test/Driver/fuchsia.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/fuchsia.cpp?rev=354208&r1=354207&r2=354208&view=diff ============================================================================== --- cfe/trunk/test/Driver/fuchsia.cpp (original) +++ cfe/trunk/test/Driver/fuchsia.cpp Sat Feb 16 17:02:40 2019 @@ -43,3 +43,9 @@ // CHECK-STATIC: "-lm" // CHECK-STATIC: "--pop-state" // CHECK-STATIC: "-lc" + +// RUN: %clang %s -### --target=x86_64-fuchsia -nostdlib++ -fuse-ld=lld 2>&1 \ +// RUN: | FileCheck %s -check-prefix=CHECK-NOSTDLIBXX +// CHECK-NOSTDLIBXX-NOT: "-lc++" +// CHECK-NOSTDLIBXX-NOT: "-lm" +// CHECK-NOSTDLIBXX: "-lc" _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
