Accepting request 127989 from devel:tools:compiler

fix arm build, please forward to factory (forwarded request 127972 from adrianSuSE)

OBS-URL: https://build.opensuse.org/request/show/127989
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/llvm?expand=0&rev=30

arm-suse-support.patch

@@ -0,0 +1,74 @@
+Index: tools/clang/lib/Driver/Tools.cpp
+===================================================================
+--- tools/clang/lib/Driver/Tools.cpp.orig
++++ tools/clang/lib/Driver/Tools.cpp
+@@ -611,6 +611,11 @@ static StringRef getARMFloatABI(const Dr
+     }
+ 
+     case llvm::Triple::Linux: {
++      StringRef ArchName = getLLVMArchSuffixForARM(getARMTargetCPU(Args, Triple));
++      if (Triple.getEnvironment() == llvm::Triple::GNUEABIHF || ArchName.startswith("v7")) {
++        FloatABI = "hard";
++        break;
++      } else
+       if (Triple.getEnvironment() == llvm::Triple::GNUEABI) {
+         FloatABI = "softfp";
+         break;
+@@ -623,6 +627,9 @@ static StringRef getARMFloatABI(const Dr
+       case llvm::Triple::GNUEABI:
+         FloatABI = "softfp";
+         break;
++      case llvm::Triple::GNUEABIHF:
++        FloatABI = "hard";
++        break;
+       case llvm::Triple::EABI:
+         // EABI is always AAPCS, and if it was not marked 'hard', it's softfp
+         FloatABI = "softfp";
+@@ -665,6 +672,7 @@ void Clang::AddARMTargetArgs(const ArgLi
+     // Select the default based on the platform.
+     switch(Triple.getEnvironment()) {
+     case llvm::Triple::ANDROIDEABI:
++    case llvm::Triple::GNUEABIHF:
+     case llvm::Triple::GNUEABI:
+       ABIName = "aapcs-linux";
+       break;
+@@ -730,10 +738,11 @@ void Clang::AddARMTargetArgs(const ArgLi
+ 
+   // Setting -msoft-float effectively disables NEON because of the GCC
+   // implementation, although the same isn't true of VFP or VFP3.
+-  if (FloatABI == "soft") {
++//  if (FloatABI == "soft") {
++// we do not use neon on suse so far, disabling it always to avoid incompatible ABI
+     CmdArgs.push_back("-target-feature");
+     CmdArgs.push_back("-neon");
+-  }
++//  }
+ 
+   // Kernel code has more strict alignment requirements.
+   if (KernelOrKext) {
+@@ -5062,8 +5071,9 @@ void linuxtools::Assemble::ConstructJob(
+     CmdArgs.push_back("-many");
+   } else if (getToolChain().getArch() == llvm::Triple::arm) {
+     StringRef MArch = getToolChain().getArchName();
+-    if (MArch == "armv7" || MArch == "armv7a" || MArch == "armv7-a")
+-      CmdArgs.push_back("-mfpu=neon");
++// we do not use neon on suse so far, disabling it always to avoid incompatible ABI
++//    if (MArch == "armv7" || MArch == "armv7a" || MArch == "armv7-a")
++//      CmdArgs.push_back("-mfpu=neon");
+   } else if (getToolChain().getArch() == llvm::Triple::mips ||
+              getToolChain().getArch() == llvm::Triple::mipsel ||
+              getToolChain().getArch() == llvm::Triple::mips64 ||
+Index: tools/clang/lib/Driver/ToolChains.cpp
+===================================================================
+--- tools/clang/lib/Driver/ToolChains.cpp.orig
++++ tools/clang/lib/Driver/ToolChains.cpp
+@@ -1185,6 +1185,9 @@ Generic_GCC::GCCInstallationDetector::GC
+   static const char *const ARMLibDirs[] = { "/lib" };
+   static const char *const ARMTriples[] = {
+     "arm-linux-gnueabi",
++    "armv5el-suse-linux-gnueabi",
++    "armv7hl-suse-linux-gnueabi",
++    "armv7hl-suse-linux-gnueabihf",
+     "arm-linux-androideabi"
+   };
+ 

llvm.changes

@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Jul 14 17:30:58 UTC 2012 - adrian@suse.de
+
+- fix arm build
+
 -------------------------------------------------------------------
 Fri Jul 13 21:03:40 UTC 2012 - llunak@suse.com
 

llvm.spec

@@ -42,6 +42,7 @@ Patch6:         rewrite-includes.patch
 Patch7:         pr12463.patch
 Patch8:         pr13141.patch
 Patch9:         pr13303.patch
+Patch10:        arm-suse-support.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  autoconf
 BuildRequires:  automake
@@ -144,6 +145,9 @@ touch tools/clang/test/Frontend/Inputs/rewrite-includes9.h
 %patch7 -p0
 %patch8 -p0
 %patch9 -p1
+%ifarch %arm
+%patch10
+%endif
 
 # We hardcode i586
 rm tools/clang/test/Driver/x86_features.c
@@ -168,6 +172,12 @@ pushd stage1
 	--enable-optimized \
 	--disable-assertions \
 	--with-optimize-option="-O0" \
+%ifarch %arm
+        --disable-sjlj-exceptions \
+        --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb \
+        --disable-werror --enable-checking=release \
+        --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf \
+%endif
 	--enable-targets=host
 
 make %{?_smp_mflags}
@@ -191,6 +201,13 @@ export CXX=$TOPLEVEL/stage1/Release/bin/clang++
         --enable-targets=%{_supported_archs} \
 %if 0%{?suse_version} >= 1220
 	--with-binutils-include=/usr/include \
+%endif
+%ifarch %arm
+	--with-optimize-option="-U_GLIBCXX_ATOMIC_BUILTINS" \
+        --disable-sjlj-exceptions \
+        --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb \
+        --disable-werror --enable-checking=release \
+        --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf \
 %endif
 	--with-clang-resource-dir="../%{_lib}/clang/%{_release_version}"
 
@@ -198,9 +215,12 @@ make %{?_smp_mflags} REQUIRES_RTTI=1
 
 %check
 cd stage2
+%if 0%{!?qemu_user_space_build:1}
+# we just do not have enough memory with qemu emulation
 make check
 cd tools/clang
 make test
+%endif
 
 %install
 cd stage2