[Driver] Support -muclibc / -mglibc command line options for a couple

of MIPS toolchains.

The uCLibc implemented for multiple architectures. A couple of MIPS toolchains
contains both uCLibc and glibc implementation so these options allow to select
used C library.

Initially -muclibc / -mglibc (as well as -mbionic) have been implemented in gcc
for various architectures so they are not MIPS specific.

llvm-svn: 215552

clang/include/clang/Driver/Options.td

@@ -80,6 +80,7 @@ def m_hexagon_Features_Group  : OptionGroup<"<m hexagon features group>">, Group
 def m_arm_Features_Group  : OptionGroup<"<m arm features group>">, Group<m_Group>;
 def m_aarch64_Features_Group  : OptionGroup<"<m aarch64 features group>">, Group<m_Group>;
 def m_ppc_Features_Group  : OptionGroup<"<m ppc features group>">, Group<m_Group>;
+def m_libc_Group          : OptionGroup<"<m libc group>">, Group<m_Group>;
 def u_Group               : OptionGroup<"<u group>">;
 
 def pedantic_Group        : OptionGroup<"<pedantic group>">,
@@ -1304,6 +1305,8 @@ def modd_spreg : Flag<["-"], "modd-spreg">, Group<m_Group>,
 def mno_odd_spreg : Flag<["-"], "mno-odd-spreg">, Group<m_Group>,
   HelpText<"Disable odd single-precision floating point registers">,
   Flags<[HelpHidden]>;
+def mglibc : Flag<["-"], "mglibc">, Group<m_libc_Group>, Flags<[HelpHidden]>;
+def muclibc : Flag<["-"], "muclibc">, Group<m_libc_Group>, Flags<[HelpHidden]>;
 def module_file_info : Flag<["-"], "module-file-info">, Flags<[DriverOption,CC1Option]>, Group<Action_Group>;
 def mthumb : Flag<["-"], "mthumb">, Group<m_Group>;
 def mtune_EQ : Joined<["-"], "mtune=">, Group<m_Group>;

clang/lib/Driver/ToolChains.cpp

@@ -1696,6 +1696,9 @@ static bool findMIPSMultilibs(const llvm::Triple &TargetTriple, StringRef Path,
     auto Mips16 = makeMultilib("/mips16")
       .flag("+mips16");
 
+    auto UCLibc = makeMultilib("/uclibc")
+      .flag("+muclibc");
+
     auto MAbi64 = makeMultilib("/64")
       .flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
 
@@ -1714,6 +1717,7 @@ static bool findMIPSMultilibs(const llvm::Triple &TargetTriple, StringRef Path,
     FSFMipsMultilibs = MultilibSet()
       .Either(MArchMips32, MArchMicroMips, 
               MArchMips64r2, MArchMips64, MArchDefault)
+      .Maybe(UCLibc)
       .Maybe(Mips16)
       .FilterOut("/mips64/mips16")
       .FilterOut("/mips64r2/mips16")
@@ -1732,7 +1736,11 @@ static bool findMIPSMultilibs(const llvm::Triple &TargetTriple, StringRef Path,
           StringRef InstallDir, StringRef TripleStr, const Multilib &M) {
         std::vector<std::string> Dirs;
         Dirs.push_back((InstallDir + "/include").str());
-        Dirs.push_back((InstallDir + "/../../../../sysroot/usr/include").str());
+        std::string SysRootInc = InstallDir.str() + "/../../../../sysroot";
+        if (StringRef(M.includeSuffix()).startswith("/uclibc"))
+          Dirs.push_back(SysRootInc + "/uclibc/usr/include");
+        else
+          Dirs.push_back(SysRootInc + "/usr/include");
         return Dirs;
       });
   }
@@ -1749,6 +1757,9 @@ static bool findMIPSMultilibs(const llvm::Triple &TargetTriple, StringRef Path,
     auto MArchDefault = makeMultilib("")
       .flag("-mips16").flag("-mmicromips");
 
+    auto UCLibc = makeMultilib("/uclibc")
+      .flag("+muclibc");
+
     auto SoftFloat = makeMultilib("/soft-float")
       .flag("+msoft-float");
 
@@ -1772,6 +1783,7 @@ static bool findMIPSMultilibs(const llvm::Triple &TargetTriple, StringRef Path,
 
     CSMipsMultilibs = MultilibSet()
       .Either(MArchMips16, MArchMicroMips, MArchDefault)
+      .Maybe(UCLibc)
       .Either(SoftFloat, Nan2008, DefaultFloat)
       .FilterOut("/micromips/nan2008")
       .FilterOut("/mips16/nan2008")
@@ -1784,8 +1796,12 @@ static bool findMIPSMultilibs(const llvm::Triple &TargetTriple, StringRef Path,
           StringRef InstallDir, StringRef TripleStr, const Multilib &M) {
         std::vector<std::string> Dirs;
         Dirs.push_back((InstallDir + "/include").str());
-        Dirs.push_back((InstallDir + "/../../../../" + TripleStr +
+        std::string SysRootInc =
-                        "/libc/usr/include").str());
+            InstallDir.str() + "/../../../../" + TripleStr.str();
+        if (StringRef(M.includeSuffix()).startswith("/uclibc"))
+          Dirs.push_back(SysRootInc + "/libc/uclibc/usr/include");
+        else
+          Dirs.push_back(SysRootInc + "/libc/usr/include");
         return Dirs;
       });
   }
@@ -1855,6 +1871,7 @@ static bool findMIPSMultilibs(const llvm::Triple &TargetTriple, StringRef Path,
   addMultilibFlag(CPUName == "mips64r2" || CPUName == "octeon",
                   "march=mips64r2", Flags);
   addMultilibFlag(isMicroMips(Args), "mmicromips", Flags);
+  addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags);
   addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008",
                   Flags);
   addMultilibFlag(ABIName == "n32", "mabi=n32", Flags);

clang/lib/Driver/Tools.cpp

@@ -5377,6 +5377,11 @@ bool mips::hasMipsAbiArg(const ArgList &Args, const char *Value) {
   return A && (A->getValue() == StringRef(Value));
 }
 
+bool mips::isUCLibc(const ArgList &Args) {
+  Arg *A = Args.getLastArg(options::OPT_m_libc_Group);
+  return A && A->getOption().matches(options::OPT_muclibc);
+}
+
 bool mips::isNaN2008(const ArgList &Args, const llvm::Triple &Triple) {
   if (Arg *NaNArg = Args.getLastArg(options::OPT_mnan_EQ))
     return llvm::StringSwitch<bool>(NaNArg->getValue())
@@ -7302,7 +7307,11 @@ static std::string getLinuxDynamicLinker(const ArgList &Args,
                            .Case("n32", "/lib32")
                            .Case("n64", "/lib64")
                            .Default("/lib");
-    StringRef LibName = IsNaN2008 ? "ld-linux-mipsn8.so.1" : "ld.so.1";
+    StringRef LibName;
+    if (mips::isUCLibc(Args))
+      LibName = IsNaN2008 ? "ld-uClibc-mipsn8.so.0" : "ld-uClibc.so.0";
+    else
+      LibName = IsNaN2008 ? "ld-linux-mipsn8.so.1" : "ld.so.1";
 
     return (LibDir + "/" + LibName).str();
   } else if (ToolChain.getArch() == llvm::Triple::ppc)

clang/lib/Driver/Tools.h

@@ -223,6 +223,7 @@ namespace mips {
                         const llvm::Triple &Triple, StringRef &CPUName,
                         StringRef &ABIName);
   bool hasMipsAbiArg(const llvm::opt::ArgList &Args, const char *Value);
+  bool isUCLibc(const llvm::opt::ArgList &Args);
   bool isNaN2008(const llvm::opt::ArgList &Args, const llvm::Triple &Triple);
   bool isFPXXDefault(const llvm::Triple &Triple, StringRef CPUName,
                      StringRef ABIName);

clang/test/Driver/mips-cs.cpp

@@ -28,6 +28,35 @@
 // CHECK-BE-HF-32: "[[TC]]{{/|\\\\}}crtend.o"
 // CHECK-BE-HF-32: "[[TC]]/../../../../mips-linux-gnu/libc/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Big-endian, hard float, uclibc
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mips-linux-gnu -muclibc \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_cs_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-BE-UC-HF-32 %s
+// CHECK-BE-UC-HF-32: "-internal-isystem"
+// CHECK-BE-UC-HF-32: "[[TC:[^"]+/lib/gcc/mips-linux-gnu/4.6.3]]/../../../../mips-linux-gnu/include/c++/4.6.3"
+// CHECK-BE-UC-HF-32: "-internal-isystem"
+// CHECK-BE-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/mips-linux-gnu/uclibc"
+// CHECK-BE-UC-HF-32: "-internal-isystem"
+// CHECK-BE-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/backward"
+// CHECK-BE-UC-HF-32: "-internal-externc-isystem"
+// CHECK-BE-UC-HF-32: "[[TC]]/include"
+// CHECK-BE-UC-HF-32: "-internal-externc-isystem"
+// CHECK-BE-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/usr/include"
+// CHECK-BE-UC-HF-32: "{{.*}}ld{{(.exe)?}}"
+// CHECK-BE-UC-HF-32: "--sysroot=[[TC]]/../../../../mips-linux-gnu/libc/uclibc"
+// CHECK-BE-UC-HF-32: "-dynamic-linker" "/lib/ld-uClibc.so.0"
+// CHECK-BE-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-BE-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-BE-UC-HF-32: "[[TC]]/uclibc{{/|\\\\}}crtbegin.o"
+// CHECK-BE-UC-HF-32: "-L[[TC]]/uclibc"
+// CHECK-BE-UC-HF-32: "-L[[TC]]/../../../../mips-linux-gnu/lib/../lib/uclibc"
+// CHECK-BE-UC-HF-32-NOT: "-L[[TC]]"
+// CHECK-BE-UC-HF-32: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/lib/../lib"
+// CHECK-BE-UC-HF-32: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/usr/lib/../lib"
+// CHECK-BE-UC-HF-32: "[[TC]]/uclibc{{/|\\\\}}crtend.o"
+// CHECK-BE-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Big-endian, hard float, mips16
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips-linux-gnu -mips16 \
@@ -115,6 +144,35 @@
 // CHECK-BE-HF-NAN: "[[TC]]/nan2008{{/|\\\\}}crtend.o"
 // CHECK-BE-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/libc/nan2008/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Big-endian, hard float, uclibc, nan2008
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mips-linux-gnu -muclibc -mnan=2008 \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_cs_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-BE-UC-HF-NAN %s
+// CHECK-BE-UC-HF-NAN: "-internal-isystem"
+// CHECK-BE-UC-HF-NAN: "[[TC:[^"]+/lib/gcc/mips-linux-gnu/4.6.3]]/../../../../mips-linux-gnu/include/c++/4.6.3"
+// CHECK-BE-UC-HF-NAN: "-internal-isystem"
+// CHECK-BE-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/mips-linux-gnu/uclibc/nan2008"
+// CHECK-BE-UC-HF-NAN: "-internal-isystem"
+// CHECK-BE-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/backward"
+// CHECK-BE-UC-HF-NAN: "-internal-externc-isystem"
+// CHECK-BE-UC-HF-NAN: "[[TC]]/include"
+// CHECK-BE-UC-HF-NAN: "-internal-externc-isystem"
+// CHECK-BE-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/usr/include"
+// CHECK-BE-UC-HF-NAN: "{{.*}}ld{{(.exe)?}}"
+// CHECK-BE-UC-HF-NAN: "--sysroot=[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008"
+// CHECK-BE-UC-HF-NAN: "-dynamic-linker" "/lib/ld-uClibc-mipsn8.so.0"
+// CHECK-BE-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-BE-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-BE-UC-HF-NAN: "[[TC]]/uclibc/nan2008{{/|\\\\}}crtbegin.o"
+// CHECK-BE-UC-HF-NAN: "-L[[TC]]/uclibc/nan2008"
+// CHECK-BE-UC-HF-NAN: "-L[[TC]]/../../../../mips-linux-gnu/lib/../lib/uclibc/nan2008"
+// CHECK-BE-UC-HF-NAN-NOT: "-L[[TC]]"
+// CHECK-BE-UC-HF-NAN: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008/lib/../lib"
+// CHECK-BE-UC-HF-NAN: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008/usr/lib/../lib"
+// CHECK-BE-UC-HF-NAN: "[[TC]]/uclibc/nan2008{{/|\\\\}}crtend.o"
+// CHECK-BE-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Big-endian, soft float
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips-linux-gnu -msoft-float \
@@ -144,6 +202,35 @@
 // CHECK-BE-SF-32: "[[TC]]/soft-float{{/|\\\\}}crtend.o"
 // CHECK-BE-SF-32: "[[TC]]/../../../../mips-linux-gnu/libc/soft-float/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Big-endian, soft float, uclibc
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mips-linux-gnu -muclibc -msoft-float \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_cs_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-BE-UC-SF-32 %s
+// CHECK-BE-UC-SF-32: "-internal-isystem"
+// CHECK-BE-UC-SF-32: "[[TC:[^"]+/lib/gcc/mips-linux-gnu/4.6.3]]/../../../../mips-linux-gnu/include/c++/4.6.3"
+// CHECK-BE-UC-SF-32: "-internal-isystem"
+// CHECK-BE-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/mips-linux-gnu/uclibc/soft-float"
+// CHECK-BE-UC-SF-32: "-internal-isystem"
+// CHECK-BE-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/backward"
+// CHECK-BE-UC-SF-32: "-internal-externc-isystem"
+// CHECK-BE-UC-SF-32: "[[TC]]/include"
+// CHECK-BE-UC-SF-32: "-internal-externc-isystem"
+// CHECK-BE-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/usr/include"
+// CHECK-BE-UC-SF-32: "{{.*}}ld{{(.exe)?}}"
+// CHECK-BE-UC-SF-32: "--sysroot=[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float"
+// CHECK-BE-UC-SF-32: "-dynamic-linker" "/lib/ld-uClibc.so.0"
+// CHECK-BE-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-BE-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-BE-UC-SF-32: "[[TC]]/uclibc/soft-float{{/|\\\\}}crtbegin.o"
+// CHECK-BE-UC-SF-32: "-L[[TC]]/uclibc/soft-float"
+// CHECK-BE-UC-SF-32: "-L[[TC]]/../../../../mips-linux-gnu/lib/../lib/uclibc/soft-float"
+// CHECK-BE-UC-SF-32-NOT: "-L[[TC]]"
+// CHECK-BE-UC-SF-32: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float/lib/../lib"
+// CHECK-BE-UC-SF-32: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float/usr/lib/../lib"
+// CHECK-BE-UC-SF-32: "[[TC]]/uclibc/soft-float{{/|\\\\}}crtend.o"
+// CHECK-BE-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Big-endian, soft float, mips16
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips-linux-gnu -msoft-float -mips16 \
@@ -289,6 +376,35 @@
 // CHECK-EL-HF-32: "[[TC]]/el{{/|\\\\}}crtend.o"
 // CHECK-EL-HF-32: "[[TC]]/../../../../mips-linux-gnu/libc/el/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Little-endian, hard float, uclibc
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mipsel-linux-gnu -mhard-float -muclibc \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_cs_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-EL-UC-HF-32 %s
+// CHECK-EL-UC-HF-32: "-internal-isystem"
+// CHECK-EL-UC-HF-32: "[[TC:[^"]+/lib/gcc/mips-linux-gnu/4.6.3]]/../../../../mips-linux-gnu/include/c++/4.6.3"
+// CHECK-EL-UC-HF-32: "-internal-isystem"
+// CHECK-EL-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/mips-linux-gnu/uclibc/el"
+// CHECK-EL-UC-HF-32: "-internal-isystem"
+// CHECK-EL-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/backward"
+// CHECK-EL-UC-HF-32: "-internal-externc-isystem"
+// CHECK-EL-UC-HF-32: "[[TC]]/include"
+// CHECK-EL-UC-HF-32: "-internal-externc-isystem"
+// CHECK-EL-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/usr/include"
+// CHECK-EL-UC-HF-32: "{{.*}}ld{{(.exe)?}}"
+// CHECK-EL-UC-HF-32: "--sysroot=[[TC]]/../../../../mips-linux-gnu/libc/uclibc/el"
+// CHECK-EL-UC-HF-32: "-dynamic-linker" "/lib/ld-uClibc.so.0"
+// CHECK-EL-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/el/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-EL-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/el/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-EL-UC-HF-32: "[[TC]]/uclibc/el{{/|\\\\}}crtbegin.o"
+// CHECK-EL-UC-HF-32: "-L[[TC]]/uclibc/el"
+// CHECK-EL-UC-HF-32: "-L[[TC]]/../../../../mips-linux-gnu/lib/../lib/uclibc/el"
+// CHECK-EL-UC-HF-32-NOT: "-L[[TC]]"
+// CHECK-EL-UC-HF-32: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/el/lib/../lib"
+// CHECK-EL-UC-HF-32: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/el/usr/lib/../lib"
+// CHECK-EL-UC-HF-32: "[[TC]]/uclibc/el{{/|\\\\}}crtend.o"
+// CHECK-EL-UC-HF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/el/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Little-endian, hard float, mips16
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-gnu -mips16 \
@@ -376,6 +492,35 @@
 // CHECK-EL-HF-NAN: "[[TC]]/nan2008/el{{/|\\\\}}crtend.o"
 // CHECK-EL-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/libc/nan2008/el/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Little-endian, hard float, uclibc, nan2008
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mipsel-linux-gnu -muclibc -mnan=2008 \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_cs_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-EL-UC-HF-NAN %s
+// CHECK-EL-UC-HF-NAN: "-internal-isystem"
+// CHECK-EL-UC-HF-NAN: "[[TC:[^"]+/lib/gcc/mips-linux-gnu/4.6.3]]/../../../../mips-linux-gnu/include/c++/4.6.3"
+// CHECK-EL-UC-HF-NAN: "-internal-isystem"
+// CHECK-EL-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/mips-linux-gnu/uclibc/nan2008/el"
+// CHECK-EL-UC-HF-NAN: "-internal-isystem"
+// CHECK-EL-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/backward"
+// CHECK-EL-UC-HF-NAN: "-internal-externc-isystem"
+// CHECK-EL-UC-HF-NAN: "[[TC]]/include"
+// CHECK-EL-UC-HF-NAN: "-internal-externc-isystem"
+// CHECK-EL-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/usr/include"
+// CHECK-EL-UC-HF-NAN: "{{.*}}ld{{(.exe)?}}"
+// CHECK-EL-UC-HF-NAN: "--sysroot=[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008/el"
+// CHECK-EL-UC-HF-NAN: "-dynamic-linker" "/lib/ld-uClibc-mipsn8.so.0"
+// CHECK-EL-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008/el/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-EL-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008/el/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-EL-UC-HF-NAN: "[[TC]]/uclibc/nan2008/el{{/|\\\\}}crtbegin.o"
+// CHECK-EL-UC-HF-NAN: "-L[[TC]]/uclibc/nan2008/el"
+// CHECK-EL-UC-HF-NAN: "-L[[TC]]/../../../../mips-linux-gnu/lib/../lib/uclibc/nan2008/el"
+// CHECK-EL-UC-HF-NAN-NOT: "-L[[TC]]"
+// CHECK-EL-UC-HF-NAN: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008/el/lib/../lib"
+// CHECK-EL-UC-HF-NAN: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008/el/usr/lib/../lib"
+// CHECK-EL-UC-HF-NAN: "[[TC]]/uclibc/nan2008/el{{/|\\\\}}crtend.o"
+// CHECK-EL-UC-HF-NAN: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/nan2008/el/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Little-endian, soft float
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-gnu -mfloat-abi=soft \
@@ -405,6 +550,35 @@
 // CHECK-EL-SF-32: "[[TC]]/soft-float/el{{/|\\\\}}crtend.o"
 // CHECK-EL-SF-32: "[[TC]]/../../../../mips-linux-gnu/libc/soft-float/el/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Little-endian, soft float, uclibc
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mipsel-linux-gnu -mfloat-abi=soft -muclibc \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_cs_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-EL-UC-SF-32 %s
+// CHECK-EL-UC-SF-32: "-internal-isystem"
+// CHECK-EL-UC-SF-32: "[[TC:[^"]+/lib/gcc/mips-linux-gnu/4.6.3]]/../../../../mips-linux-gnu/include/c++/4.6.3"
+// CHECK-EL-UC-SF-32: "-internal-isystem"
+// CHECK-EL-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/mips-linux-gnu/uclibc/soft-float/el"
+// CHECK-EL-UC-SF-32: "-internal-isystem"
+// CHECK-EL-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/include/c++/4.6.3/backward"
+// CHECK-EL-UC-SF-32: "-internal-externc-isystem"
+// CHECK-EL-UC-SF-32: "[[TC]]/include"
+// CHECK-EL-UC-SF-32: "-internal-externc-isystem"
+// CHECK-EL-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/usr/include"
+// CHECK-EL-UC-SF-32: "{{.*}}ld{{(.exe)?}}"
+// CHECK-EL-UC-SF-32: "--sysroot=[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float/el"
+// CHECK-EL-UC-SF-32: "-dynamic-linker" "/lib/ld-uClibc.so.0"
+// CHECK-EL-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float/el/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-EL-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float/el/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-EL-UC-SF-32: "[[TC]]/uclibc/soft-float/el{{/|\\\\}}crtbegin.o"
+// CHECK-EL-UC-SF-32: "-L[[TC]]/uclibc/soft-float/el"
+// CHECK-EL-UC-SF-32: "-L[[TC]]/../../../../mips-linux-gnu/lib/../lib/uclibc/soft-float/el"
+// CHECK-EL-UC-SF-32-NOT: "-L[[TC]]"
+// CHECK-EL-UC-SF-32: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float/el/lib/../lib"
+// CHECK-EL-UC-SF-32: "-L[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float/el/usr/lib/../lib"
+// CHECK-EL-UC-SF-32: "[[TC]]/uclibc/soft-float/el{{/|\\\\}}crtend.o"
+// CHECK-EL-UC-SF-32: "[[TC]]/../../../../mips-linux-gnu/libc/uclibc/soft-float/el/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Little-endian, soft float, mips16
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-gnu -mips16 -msoft-float \

clang/test/Driver/mips-fsf.cpp

@@ -297,6 +297,33 @@
 // CHECK-BE-HF-32R2: "[[TC]]{{/|\\\\}}crtend.o"
 // CHECK-BE-HF-32R2: "[[TC]]/../../../../sysroot/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Big-endian, mips32r2, hard float, uclibc
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mips-linux-gnu -mips32r2 -mhard-float -muclibc \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_fsf_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-BE-UC-HF-32R2 %s
+// CHECK-BE-UC-HF-32R2: "-internal-isystem"
+// CHECK-BE-UC-HF-32R2: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.0]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0"
+// CHECK-BE-UC-HF-32R2: "-internal-isystem"
+// CHECK-BE-UC-HF-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/mips-mti-linux-gnu/uclibc"
+// CHECK-BE-UC-HF-32R2: "-internal-isystem"
+// CHECK-BE-UC-HF-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/backward"
+// CHECK-BE-UC-HF-32R2: "-internal-externc-isystem"
+// CHECK-BE-UC-HF-32R2: "[[TC]]/include"
+// CHECK-BE-UC-HF-32R2: "-internal-externc-isystem"
+// CHECK-BE-UC-HF-32R2: "[[TC]]/../../../../sysroot/uclibc/usr/include"
+// CHECK-BE-UC-HF-32R2: "{{.*}}ld{{(.exe)?}}"
+// CHECK-BE-UC-HF-32R2: "--sysroot=[[TC]]/../../../../sysroot/uclibc"
+// CHECK-BE-UC-HF-32R2: "-dynamic-linker" "/lib/ld-uClibc.so.0"
+// CHECK-BE-UC-HF-32R2: "[[TC]]/../../../../sysroot/uclibc/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-BE-UC-HF-32R2: "[[TC]]/../../../../sysroot/uclibc/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-BE-UC-HF-32R2: "[[TC]]/uclibc{{/|\\\\}}crtbegin.o"
+// CHECK-BE-UC-HF-32R2: "-L[[TC]]/uclibc"
+// CHECK-BE-UC-HF-32R2: "-L[[TC]]/../../../../mips-mti-linux-gnu/lib/../lib/uclibc"
+// CHECK-BE-UC-HF-32R2: "-L[[TC]]/../../../../sysroot/uclibc/usr/lib/../lib"
+// CHECK-BE-UC-HF-32R2: "[[TC]]/uclibc{{/|\\\\}}crtend.o"
+// CHECK-BE-UC-HF-32R2: "[[TC]]/../../../../sysroot/uclibc/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Big-endian, mips32r2, fp64, hard float
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips-linux-gnu -mips32r2 -mfp64 -mhard-float \
@@ -351,6 +378,33 @@
 // CHECK-BE-SF-32R2: "[[TC]]/sof{{/|\\\\}}crtend.o"
 // CHECK-BE-SF-32R2: "[[TC]]/../../../../sysroot/sof/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Big-endian, mips32r2, soft float, uclibc
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mips-linux-gnu -mips32r2 -msoft-float -muclibc \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_fsf_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-BE-UC-SF-32R2 %s
+// CHECK-BE-UC-SF-32R2: "-internal-isystem"
+// CHECK-BE-UC-SF-32R2: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.0]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0"
+// CHECK-BE-UC-SF-32R2: "-internal-isystem"
+// CHECK-BE-UC-SF-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/mips-mti-linux-gnu/uclibc/sof"
+// CHECK-BE-UC-SF-32R2: "-internal-isystem"
+// CHECK-BE-UC-SF-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/backward"
+// CHECK-BE-UC-SF-32R2: "-internal-externc-isystem"
+// CHECK-BE-UC-SF-32R2: "[[TC]]/include"
+// CHECK-BE-UC-SF-32R2: "-internal-externc-isystem"
+// CHECK-BE-UC-SF-32R2: "[[TC]]/../../../../sysroot/uclibc/usr/include"
+// CHECK-BE-UC-SF-32R2: "{{.*}}ld{{(.exe)?}}"
+// CHECK-BE-UC-SF-32R2: "--sysroot=[[TC]]/../../../../sysroot/uclibc/sof"
+// CHECK-BE-UC-SF-32R2: "-dynamic-linker" "/lib/ld-uClibc.so.0"
+// CHECK-BE-UC-SF-32R2: "[[TC]]/../../../../sysroot/uclibc/sof/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-BE-UC-SF-32R2: "[[TC]]/../../../../sysroot/uclibc/sof/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-BE-UC-SF-32R2: "[[TC]]/uclibc/sof{{/|\\\\}}crtbegin.o"
+// CHECK-BE-UC-SF-32R2: "-L[[TC]]/uclibc/sof"
+// CHECK-BE-UC-SF-32R2: "-L[[TC]]/../../../../mips-mti-linux-gnu/lib/../lib/uclibc/sof"
+// CHECK-BE-UC-SF-32R2: "-L[[TC]]/../../../../sysroot/uclibc/sof/usr/lib/../lib"
+// CHECK-BE-UC-SF-32R2: "[[TC]]/uclibc/sof{{/|\\\\}}crtend.o"
+// CHECK-BE-UC-SF-32R2: "[[TC]]/../../../../sysroot/uclibc/sof/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Big-endian, mips32r2 / mips16, hard float
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips-linux-gnu -mips32r2 -mips16 -mhard-float \
@@ -513,6 +567,33 @@
 // CHECK-BE-NAN-32R2: "[[TC]]/nan2008{{/|\\\\}}crtend.o"
 // CHECK-BE-NAN-32R2: "[[TC]]/../../../../sysroot/nan2008/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Big-endian, mips32r2, nan2008, uclibc
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mips-linux-gnu -mips32r2 -mnan=2008 -muclibc \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_fsf_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-BE-UC-NAN-32R2 %s
+// CHECK-BE-UC-NAN-32R2: "-internal-isystem"
+// CHECK-BE-UC-NAN-32R2: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.0]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0"
+// CHECK-BE-UC-NAN-32R2: "-internal-isystem"
+// CHECK-BE-UC-NAN-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/mips-mti-linux-gnu/uclibc/nan2008"
+// CHECK-BE-UC-NAN-32R2: "-internal-isystem"
+// CHECK-BE-UC-NAN-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/backward"
+// CHECK-BE-UC-NAN-32R2: "-internal-externc-isystem"
+// CHECK-BE-UC-NAN-32R2: "[[TC]]/include"
+// CHECK-BE-UC-NAN-32R2: "-internal-externc-isystem"
+// CHECK-BE-UC-NAN-32R2: "[[TC]]/../../../../sysroot/uclibc/usr/include"
+// CHECK-BE-UC-NAN-32R2: "{{.*}}ld{{(.exe)?}}"
+// CHECK-BE-UC-NAN-32R2: "--sysroot=[[TC]]/../../../../sysroot/uclibc/nan2008"
+// CHECK-BE-UC-NAN-32R2: "-dynamic-linker" "/lib/ld-uClibc-mipsn8.so.0"
+// CHECK-BE-UC-NAN-32R2: "[[TC]]/../../../../sysroot/uclibc/nan2008/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-BE-UC-NAN-32R2: "[[TC]]/../../../../sysroot/uclibc/nan2008/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-BE-UC-NAN-32R2: "[[TC]]/uclibc/nan2008{{/|\\\\}}crtbegin.o"
+// CHECK-BE-UC-NAN-32R2: "-L[[TC]]/uclibc/nan2008"
+// CHECK-BE-UC-NAN-32R2: "-L[[TC]]/../../../../mips-mti-linux-gnu/lib/../lib/uclibc/nan2008"
+// CHECK-BE-UC-NAN-32R2: "-L[[TC]]/../../../../sysroot/uclibc/nan2008/usr/lib/../lib"
+// CHECK-BE-UC-NAN-32R2: "[[TC]]/uclibc/nan2008{{/|\\\\}}crtend.o"
+// CHECK-BE-UC-NAN-32R2: "[[TC]]/../../../../sysroot/uclibc/nan2008/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Big-endian, mips32r2, fp64, nan2008
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mips-linux-gnu -mips32r2 -mfp64 -mnan=2008 \
@@ -1566,6 +1647,33 @@
 // CHECK-EL-HF-32R2: "[[TC]]/el{{/|\\\\}}crtend.o"
 // CHECK-EL-HF-32R2: "[[TC]]/../../../../sysroot/el/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Little-endian, mips32r2, hard float, uclibc
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mipsel-linux-gnu -mips32r2 -mhard-float -muclibc \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_fsf_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-EL-UC-HF-32R2 %s
+// CHECK-EL-UC-HF-32R2: "-internal-isystem"
+// CHECK-EL-UC-HF-32R2: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.0]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0"
+// CHECK-EL-UC-HF-32R2: "-internal-isystem"
+// CHECK-EL-UC-HF-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/mips-mti-linux-gnu/uclibc/el"
+// CHECK-EL-UC-HF-32R2: "-internal-isystem"
+// CHECK-EL-UC-HF-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/backward"
+// CHECK-EL-UC-HF-32R2: "-internal-externc-isystem"
+// CHECK-EL-UC-HF-32R2: "[[TC]]/include"
+// CHECK-EL-UC-HF-32R2: "-internal-externc-isystem"
+// CHECK-EL-UC-HF-32R2: "[[TC]]/../../../../sysroot/uclibc/usr/include"
+// CHECK-EL-UC-HF-32R2: "{{.*}}ld{{(.exe)?}}"
+// CHECK-EL-UC-HF-32R2: "--sysroot=[[TC]]/../../../../sysroot/uclibc/el"
+// CHECK-EL-UC-HF-32R2: "-dynamic-linker" "/lib/ld-uClibc.so.0"
+// CHECK-EL-UC-HF-32R2: "[[TC]]/../../../../sysroot/uclibc/el/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-EL-UC-HF-32R2: "[[TC]]/../../../../sysroot/uclibc/el/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-EL-UC-HF-32R2: "[[TC]]/uclibc/el{{/|\\\\}}crtbegin.o"
+// CHECK-EL-UC-HF-32R2: "-L[[TC]]/uclibc/el"
+// CHECK-EL-UC-HF-32R2: "-L[[TC]]/../../../../mips-mti-linux-gnu/lib/../lib/uclibc/el"
+// CHECK-EL-UC-HF-32R2: "-L[[TC]]/../../../../sysroot/uclibc/el/usr/lib/../lib"
+// CHECK-EL-UC-HF-32R2: "[[TC]]/uclibc/el{{/|\\\\}}crtend.o"
+// CHECK-EL-UC-HF-32R2: "[[TC]]/../../../../sysroot/uclibc/el/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Little-endian, mips32r2, fp64, hard float
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-gnu -mips32r2 -mfp64 -mhard-float \
@@ -1620,6 +1728,33 @@
 // CHECK-EL-SF-32R2: "[[TC]]/el/sof{{/|\\\\}}crtend.o"
 // CHECK-EL-SF-32R2: "[[TC]]/../../../../sysroot/el/sof/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Little-endian, mips32r2, soft float, uclibc
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mipsel-linux-gnu -mips32r2 -msoft-float -muclibc \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_fsf_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-EL-UC-SF-32R2 %s
+// CHECK-EL-UC-SF-32R2: "-internal-isystem"
+// CHECK-EL-UC-SF-32R2: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.0]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0"
+// CHECK-EL-UC-SF-32R2: "-internal-isystem"
+// CHECK-EL-UC-SF-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/mips-mti-linux-gnu/uclibc/el/sof"
+// CHECK-EL-UC-SF-32R2: "-internal-isystem"
+// CHECK-EL-UC-SF-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/backward"
+// CHECK-EL-UC-SF-32R2: "-internal-externc-isystem"
+// CHECK-EL-UC-SF-32R2: "[[TC]]/include"
+// CHECK-EL-UC-SF-32R2: "-internal-externc-isystem"
+// CHECK-EL-UC-SF-32R2: "[[TC]]/../../../../sysroot/uclibc/usr/include"
+// CHECK-EL-UC-SF-32R2: "{{.*}}ld{{(.exe)?}}"
+// CHECK-EL-UC-SF-32R2: "--sysroot=[[TC]]/../../../../sysroot/uclibc/el/sof"
+// CHECK-EL-UC-SF-32R2: "-dynamic-linker" "/lib/ld-uClibc.so.0"
+// CHECK-EL-UC-SF-32R2: "[[TC]]/../../../../sysroot/uclibc/el/sof/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-EL-UC-SF-32R2: "[[TC]]/../../../../sysroot/uclibc/el/sof/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-EL-UC-SF-32R2: "[[TC]]/uclibc/el/sof{{/|\\\\}}crtbegin.o"
+// CHECK-EL-UC-SF-32R2: "-L[[TC]]/uclibc/el/sof"
+// CHECK-EL-UC-SF-32R2: "-L[[TC]]/../../../../mips-mti-linux-gnu/lib/../lib/uclibc/el/sof"
+// CHECK-EL-UC-SF-32R2: "-L[[TC]]/../../../../sysroot/uclibc/el/sof/usr/lib/../lib"
+// CHECK-EL-UC-SF-32R2: "[[TC]]/uclibc/el/sof{{/|\\\\}}crtend.o"
+// CHECK-EL-UC-SF-32R2: "[[TC]]/../../../../sysroot/uclibc/el/sof/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Little-endian, mips32r2 / mips16, hard float
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-gnu -mips32r2 -mips16 -mhard-float \
@@ -1782,6 +1917,33 @@
 // CHECK-EL-NAN-32R2: "[[TC]]/el/nan2008{{/|\\\\}}crtend.o"
 // CHECK-EL-NAN-32R2: "[[TC]]/../../../../sysroot/el/nan2008/usr/lib/../lib{{/|\\\\}}crtn.o"
 //
+// = Little-endian, mips32r2, nan2008, uclibc
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     --target=mipsel-linux-gnu -mips32r2 -mnan=2008 -muclibc \
+// RUN:     --gcc-toolchain=%S/Inputs/mips_fsf_tree \
+// RUN:   | FileCheck --check-prefix=CHECK-EL-UC-NAN-32R2 %s
+// CHECK-EL-UC-NAN-32R2: "-internal-isystem"
+// CHECK-EL-UC-NAN-32R2: "[[TC:[^"]+/lib/gcc/mips-mti-linux-gnu/4.9.0]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0"
+// CHECK-EL-UC-NAN-32R2: "-internal-isystem"
+// CHECK-EL-UC-NAN-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/mips-mti-linux-gnu/uclibc/el/nan2008"
+// CHECK-EL-UC-NAN-32R2: "-internal-isystem"
+// CHECK-EL-UC-NAN-32R2: "[[TC]]/../../../../mips-mti-linux-gnu/include/c++/4.9.0/backward"
+// CHECK-EL-UC-NAN-32R2: "-internal-externc-isystem"
+// CHECK-EL-UC-NAN-32R2: "[[TC]]/include"
+// CHECK-EL-UC-NAN-32R2: "-internal-externc-isystem"
+// CHECK-EL-UC-NAN-32R2: "[[TC]]/../../../../sysroot/uclibc/usr/include"
+// CHECK-EL-UC-NAN-32R2: "{{.*}}ld{{(.exe)?}}"
+// CHECK-EL-UC-NAN-32R2: "--sysroot=[[TC]]/../../../../sysroot/uclibc/el/nan2008"
+// CHECK-EL-UC-NAN-32R2: "-dynamic-linker" "/lib/ld-uClibc-mipsn8.so.0"
+// CHECK-EL-UC-NAN-32R2: "[[TC]]/../../../../sysroot/uclibc/el/nan2008/usr/lib/../lib{{/|\\\\}}crt1.o"
+// CHECK-EL-UC-NAN-32R2: "[[TC]]/../../../../sysroot/uclibc/el/nan2008/usr/lib/../lib{{/|\\\\}}crti.o"
+// CHECK-EL-UC-NAN-32R2: "[[TC]]/uclibc/el/nan2008{{/|\\\\}}crtbegin.o"
+// CHECK-EL-UC-NAN-32R2: "-L[[TC]]/uclibc/el/nan2008"
+// CHECK-EL-UC-NAN-32R2: "-L[[TC]]/../../../../mips-mti-linux-gnu/lib/../lib/uclibc/el/nan2008"
+// CHECK-EL-UC-NAN-32R2: "-L[[TC]]/../../../../sysroot/uclibc/el/nan2008/usr/lib/../lib"
+// CHECK-EL-UC-NAN-32R2: "[[TC]]/uclibc/el/nan2008{{/|\\\\}}crtend.o"
+// CHECK-EL-UC-NAN-32R2: "[[TC]]/../../../../sysroot/uclibc/el/nan2008/usr/lib/../lib{{/|\\\\}}crtn.o"
+//
 // = Little-endian, mips32r2, fp64, nan2008
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-gnu -mips32r2 -mfp64 -mnan=2008 \