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[Driver] Linux.cpp: move resource directory before /usr/local/include for non-musl 

This follows GCC and simplifies code. /usr/local/include and TOOL_INCLUDE_DIR
should not conflict with the resource directory include so users should not
observe any difference.
This commit is contained in:
Fangrui Song 2021-03-28 12:44:21 -07:00
parent ce066da81c
commit 2a28d1d3b7
4 changed files with 34 additions and 27 deletions
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21
clang/lib/Driver/ToolChains/Linux.cpp
View File

@ -540,14 +540,10 @@ void Linux::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
return;
if (!DriverArgs.hasArg(options::OPT_nostdlibinc)) {
// LOCAL_INCLUDE_DIR
addSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/local/include");
// TOOL_INCLUDE_DIR
AddMultilibIncludeArgs(DriverArgs, CC1Args);
}
// Note: in gcc, GCC_INCLUDE_DIR (private headers) precedes LOCAL_INCLUDE_DIR.
// Add 'include' in the resource directory, which is similar to
// GCC_INCLUDE_DIR (private headers) in GCC. Note: the include directory
// contains some files conflicting with system /usr/include. musl systems
// prefer the /usr/include copies which are more relevant.
SmallString<128> ResourceDirInclude(D.ResourceDir);
llvm::sys::path::append(ResourceDirInclude, "include");
if (!DriverArgs.hasArg(options::OPT_nobuiltininc) &&
@ -557,6 +553,11 @@ void Linux::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
if (DriverArgs.hasArg(options::OPT_nostdlibinc))
return;
// LOCAL_INCLUDE_DIR
addSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/local/include");
// TOOL_INCLUDE_DIR
AddMultilibIncludeArgs(DriverArgs, CC1Args);
// Check for configure-time C include directories.
StringRef CIncludeDirs(C_INCLUDE_DIRS);
if (CIncludeDirs != "") {
@ -570,8 +571,8 @@ void Linux::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
return;
}
// On Debian (and its derivatives which ship g++-multiarch-incdir.diff) and
// Android, add /usr/include/$triple if exists.
// On systems using multiarch and Android, add /usr/include/$triple before
// /usr/include.
std::string MultiarchIncludeDir = getMultiarchTriple(D, getTriple(), SysRoot);
if (!MultiarchIncludeDir.empty() &&
D.getVFS().exists(SysRoot + "/usr/include/" + MultiarchIncludeDir))

8
clang/test/Driver/android-ndk-standalone.cpp
View File

@ -9,8 +9,8 @@
// CHECK: {{.*}}clang{{.*}}" "-cc1"
// CHECK: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
// CHECK: "-internal-isystem" "{{.*}}/include/c++/v1"
// CHECK: "-internal-isystem" "{{.*}}/sysroot/usr/local/include"
// CHECK: "-internal-isystem" "[[RESOURCE_DIR]]{{(/|\\\\)}}include"
// CHECK: "-internal-isystem" "{{.*}}/sysroot/usr/local/include"
// CHECK: "-internal-externc-isystem" "{{.*}}/sysroot/usr/include/arm-linux-androideabi"
// CHECK: "-internal-externc-isystem" "{{.*}}/sysroot/include"
// CHECK: "-internal-externc-isystem" "{{.*}}/sysroot/usr/include"
@ -82,8 +82,8 @@
// CHECK-ARMV7: {{.*}}clang{{.*}}" "-cc1"
// CHECK-ARMV7: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
// CHECK-ARMV7: "-internal-isystem" "{{.*}}/include/c++/v1"
// CHECK-ARMV7: "-internal-isystem" "{{.*}}/sysroot/usr/local/include"
// CHECK-ARMV7: "-internal-isystem" "[[RESOURCE_DIR]]{{(/|\\\\)}}include"
// CHECK-ARMV7: "-internal-isystem" "{{.*}}/sysroot/usr/local/include"
// CHECK-ARMV7: "-internal-externc-isystem" "{{.*}}/sysroot/usr/include/arm-linux-androideabi"
// CHECK-ARMV7: "-internal-externc-isystem" "{{.*}}/sysroot/include"
// CHECK-ARMV7: "-internal-externc-isystem" "{{.*}}/sysroot/usr/include"
@ -135,8 +135,8 @@
// CHECK-THUMB: {{.*}}clang{{.*}}" "-cc1"
// CHECK-THUMB: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
// CHECK-THUMB: "-internal-isystem" "{{.*}}/include/c++/v1"
// CHECK-THUMB: "-internal-isystem" "{{.*}}/sysroot/usr/local/include"
// CHECK-THUMB: "-internal-isystem" "[[RESOURCE_DIR]]{{(/|\\\\)}}include"
// CHECK-THUMB: "-internal-isystem" "{{.*}}/sysroot/usr/local/include"
// CHECK-THUMB: "-internal-externc-isystem" "{{.*}}/sysroot/usr/include/arm-linux-androideabi"
// CHECK-THUMB: "-internal-externc-isystem" "{{.*}}/sysroot/include"
// CHECK-THUMB: "-internal-externc-isystem" "{{.*}}/sysroot/usr/include"
@ -169,8 +169,8 @@
// CHECK-ARMV7THUMB: {{.*}}clang{{.*}}" "-cc1"
// CHECK-ARMV7THUMB: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
// CHECK-ARMV7THUMB: "-internal-isystem" "{{.*}}/include/c++/v1"
// CHECK-ARMV7THUMB: "-internal-isystem" "{{.*}}/sysroot/usr/local/include"
// CHECK-ARMV7THUMB: "-internal-isystem" "[[RESOURCE_DIR]]{{(/|\\\\)}}include"
// CHECK-ARMV7THUMB: "-internal-isystem" "{{.*}}/sysroot/usr/local/include"
// CHECK-ARMV7THUMB: "-internal-externc-isystem" "{{.*}}/sysroot/usr/include/arm-linux-androideabi"
// CHECK-ARMV7THUMB: "-internal-externc-isystem" "{{.*}}/sysroot/include"
// CHECK-ARMV7THUMB: "-internal-externc-isystem" "{{.*}}/sysroot/usr/include"

12
clang/test/Driver/linux-cross.cpp
View File

@ -2,11 +2,13 @@
/// Test native x86-64 in the tree.
// RUN: %clang -### %s --target=x86_64-linux-gnu --sysroot=%S/Inputs/debian_multiarch_tree \
// RUN: --stdlib=platform --rtlib=platform 2>&1 | FileCheck %s --check-prefix=DEBIAN_X86_64
// RUN: -resource-dir=%S/Inputs/resource_dir --stdlib=platform --rtlib=platform 2>&1 | FileCheck %s --check-prefix=DEBIAN_X86_64
// DEBIAN_X86_64: "-resource-dir" "[[RESOURCE:[^"]+]]"
// DEBIAN_X86_64: "-internal-isystem"
// DEBIAN_X86_64-SAME: {{^}} "[[SYSROOT:[^"]+]]/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10"
// DEBIAN_X86_64-SAME: {{^}} "-internal-isystem" "[[SYSROOT:[^"]+]]/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10"
// DEBIAN_X86_64-SAME: {{^}} "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward"
// DEBIAN_X86_64-SAME: {{^}} "-internal-isystem" "[[RESOURCE]]/include"
// DEBIAN_X86_64-SAME: {{^}} "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// DEBIAN_X86_64-SAME: {{^}} "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include"
// DEBIAN_X86_64: "-L
@ -26,11 +28,13 @@
/// Test -m32.
// RUN: %clang -### %s --target=x86_64-linux-gnu -m32 --sysroot=%S/Inputs/debian_multiarch_tree \
// RUN: --stdlib=platform --rtlib=platform 2>&1 | FileCheck %s --check-prefix=DEBIAN_X86_64_M32
// RUN: -resource-dir=%S/Inputs/resource_dir --stdlib=platform --rtlib=platform 2>&1 | FileCheck %s --check-prefix=DEBIAN_X86_64_M32
// DEBIAN_X86_64_M32: "-resource-dir" "[[RESOURCE:[^"]+]]"
// DEBIAN_X86_64_M32: "-internal-isystem"
// DEBIAN_X86_64_M32-SAME: {{^}} "[[SYSROOT:[^"]+]]/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10"
// DEBIAN_X86_64_M32-SAME: {{^}} "-internal-isystem" "[[SYSROOT:[^"]+]]/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10/32"
// DEBIAN_X86_64_M32-SAME: {{^}} "-internal-isystem" "[[SYSROOT:[^"]+]]/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward"
// DEBIAN_X86_64_M32-SAME: {{^}} "-internal-isystem" "[[RESOURCE]]/include"
// DEBIAN_X86_64_M32-SAME: {{^}} "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// DEBIAN_X86_64_M32-SAME: {{^}} "-internal-isystem" "[[SYSROOT:[^"]+]]/usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include"
// DEBIAN_X86_64_M32: "-internal-externc-isystem"
@ -47,11 +51,13 @@
/// Test a cross compiler.
// RUN: %clang -### %s --target=aarch64-linux-gnu --sysroot=%S/Inputs/debian_multiarch_tree \
// RUN: --stdlib=platform --rtlib=platform 2>&1 | FileCheck %s --check-prefix=DEBIAN_AARCH64
// RUN: -resource-dir=%S/Inputs/resource_dir --stdlib=platform --rtlib=platform 2>&1 | FileCheck %s --check-prefix=DEBIAN_AARCH64
// DEBIAN_AARCH64: "-resource-dir" "[[RESOURCE:[^"]+]]"
// DEBIAN_AARCH64: "-internal-isystem"
// DEBIAN_AARCH64-SAME: {{^}} "[[SYSROOT:[^"]+]]/usr/lib/gcc-cross/aarch64-linux-gnu/10/../../../../aarch64-linux-gnu/include/c++/10"
// DEBIAN_AARCH64-SAME: {{^}} "-internal-isystem" "[[SYSROOT:[^"]+]]/usr/lib/gcc-cross/aarch64-linux-gnu/10/../../../../aarch64-linux-gnu/include/c++/10/aarch64-linux-gnu"
// DEBIAN_AARCH64-SAME: {{^}} "-internal-isystem" "[[SYSROOT:[^"]+]]/usr/lib/gcc-cross/aarch64-linux-gnu/10/../../../../aarch64-linux-gnu/include/c++/10/backward"
// DEBIAN_AARCH64-SAME: {{^}} "-internal-isystem" "[[RESOURCE]]/include"
// DEBIAN_AARCH64-SAME: {{^}} "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// DEBIAN_AARCH64-SAME: {{^}} "-internal-isystem" "[[SYSROOT:[^"]+]]/usr/lib/gcc-cross/aarch64-linux-gnu/10/../../../../aarch64-linux-gnu/include"
// DEBIAN_AARCH64: "-L

20
clang/test/Driver/linux-header-search.cpp
View File

@ -80,8 +80,8 @@
// CHECK-GENTOO-4-6-2: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.2/include/g++-v4"
// CHECK-GENTOO-4-6-2: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.2/include/g++-v4/x86_64-pc-linux-gnu"
// CHECK-GENTOO-4-6-2: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.2/include/g++-v4/backward"
// CHECK-GENTOO-4-6-2: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-6-2: "-internal-isystem" "[[RESOURCE_DIR]]{{/|\\\\}}include"
// CHECK-GENTOO-4-6-2: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-6-2: "-internal-externc-isystem" "[[SYSROOT]]/include"
// CHECK-GENTOO-4-6-2: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
@ -95,8 +95,8 @@
// CHECK-GENTOO-4-6-4: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.4/include/g++-v4.6"
// CHECK-GENTOO-4-6-4: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.4/include/g++-v4.6/x86_64-pc-linux-gnu"
// CHECK-GENTOO-4-6-4: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.4/include/g++-v4.6/backward"
// CHECK-GENTOO-4-6-4: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-6-4: "-internal-isystem" "[[RESOURCE_DIR]]{{/|\\\\}}include"
// CHECK-GENTOO-4-6-4: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-6-4: "-internal-externc-isystem" "[[SYSROOT]]/include"
// CHECK-GENTOO-4-6-4: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
@ -110,8 +110,8 @@
// CHECK-GENTOO-4-9-3: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4.9.3"
// CHECK-GENTOO-4-9-3: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4.9.3/x86_64-pc-linux-gnu"
// CHECK-GENTOO-4-9-3: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4.9.3/backward"
// CHECK-GENTOO-4-9-3: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-3: "-internal-isystem" "[[RESOURCE_DIR]]{{/|\\\\}}include"
// CHECK-GENTOO-4-9-3: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-3: "-internal-externc-isystem" "[[SYSROOT]]/include"
// CHECK-GENTOO-4-9-3: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
//
@ -136,8 +136,8 @@
// CHECK-GENTOO-4-9-3-X32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4.9.3"
// CHECK-GENTOO-4-9-3-X32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4.9.3/x86_64-pc-linux-gnu/x32"
// CHECK-GENTOO-4-9-3-X32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4.9.3/backward"
// CHECK-GENTOO-4-9-3-X32: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-3-X32: "-internal-isystem" "[[RESOURCE_DIR]]{{/|\\\\}}include"
// CHECK-GENTOO-4-9-3-X32: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-3-X32: "-internal-externc-isystem" "[[SYSROOT]]/include"
// CHECK-GENTOO-4-9-3-X32: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
//
@ -152,8 +152,8 @@
// CHECK-GENTOO-4-9-3-32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4.9.3"
// CHECK-GENTOO-4-9-3-32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4.9.3/x86_64-pc-linux-gnu/32"
// CHECK-GENTOO-4-9-3-32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4.9.3/backward"
// CHECK-GENTOO-4-9-3-32: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-3-32: "-internal-isystem" "[[RESOURCE_DIR]]{{/|\\\\}}include"
// CHECK-GENTOO-4-9-3-32: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-3-32: "-internal-externc-isystem" "[[SYSROOT]]/include"
// CHECK-GENTOO-4-9-3-32: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
//
@ -173,8 +173,8 @@
// CHECK-GENTOO-4-9-X: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4.9.3"
// CHECK-GENTOO-4-9-X: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4.9.3/x86_64-pc-linux-gnu"
// CHECK-GENTOO-4-9-X: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4.9.3/backward"
// CHECK-GENTOO-4-9-X: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-X: "-internal-isystem" "[[RESOURCE_DIR]]{{/|\\\\}}include"
// CHECK-GENTOO-4-9-X: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-X: "-internal-externc-isystem" "[[SYSROOT]]/include"
// CHECK-GENTOO-4-9-X: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
//
@ -189,8 +189,8 @@
// CHECK-GENTOO-4-9-X-X32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4.9.3"
// CHECK-GENTOO-4-9-X-X32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4.9.3/x86_64-pc-linux-gnu/x32"
// CHECK-GENTOO-4-9-X-X32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4.9.3/backward"
// CHECK-GENTOO-4-9-X-X32: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-X-X32: "-internal-isystem" "[[RESOURCE_DIR]]{{/|\\\\}}include"
// CHECK-GENTOO-4-9-X-X32: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-X-X32: "-internal-externc-isystem" "[[SYSROOT]]/include"
// CHECK-GENTOO-4-9-X-X32: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
//
@ -205,8 +205,8 @@
// CHECK-GENTOO-4-9-X-32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4.9.3"
// CHECK-GENTOO-4-9-X-32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4.9.3/x86_64-pc-linux-gnu/32"
// CHECK-GENTOO-4-9-X-32: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4.9.3/backward"
// CHECK-GENTOO-4-9-X-32: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-X-32: "-internal-isystem" "[[RESOURCE_DIR]]{{/|\\\\}}include"
// CHECK-GENTOO-4-9-X-32: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-GENTOO-4-9-X-32: "-internal-externc-isystem" "[[SYSROOT]]/include"
// CHECK-GENTOO-4-9-X-32: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
//
@ -222,8 +222,8 @@
// CHECK-MIPS64-GNUABI: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/mips64-linux-gnuabi64/4.9/../../../../include/c++/4.9"
// CHECK-MIPS64-GNUABI: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/mips64-linux-gnuabi64/4.9/../../../../include/c++/4.9/mips64-linux-gnuabi64"
// CHECK-MIPS64-GNUABI: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/mips64-linux-gnuabi64/4.9/../../../../include/c++/4.9/backward"
// CHECK-MIPS64-GNUABI: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-MIPS64-GNUABI: "-internal-isystem" "[[RESOURCE_DIR]]{{/|\\\\}}include"
// CHECK-MIPS64-GNUABI: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-MIPS64-GNUABI: "-internal-externc-isystem" "[[SYSROOT]]/usr/include/mips64-linux-gnuabi64"
// CHECK-MIPS64-GNUABI: "-internal-externc-isystem" "[[SYSROOT]]/include"
// CHECK-MIPS64-GNUABI: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
@ -240,8 +240,8 @@
// CHECK-MIPS64EL-GNUABI: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/mips64el-linux-gnuabi64/4.9/../../../../include/c++/4.9"
// CHECK-MIPS64EL-GNUABI: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/mips64el-linux-gnuabi64/4.9/../../../../include/c++/4.9/mips64el-linux-gnuabi64"
// CHECK-MIPS64EL-GNUABI: "-internal-isystem" "[[SYSROOT]]/usr/lib/gcc/mips64el-linux-gnuabi64/4.9/../../../../include/c++/4.9/backward"
// CHECK-MIPS64EL-GNUABI: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-MIPS64EL-GNUABI: "-internal-isystem" "[[RESOURCE_DIR]]{{/|\\\\}}include"
// CHECK-MIPS64EL-GNUABI: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
// CHECK-MIPS64EL-GNUABI: "-internal-externc-isystem" "[[SYSROOT]]/usr/include/mips64el-linux-gnuabi64"
// CHECK-MIPS64EL-GNUABI: "-internal-externc-isystem" "[[SYSROOT]]/include"
// CHECK-MIPS64EL-GNUABI: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"