<html>
    <head>
      <base href="https://llvm.org/bugs/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Regression(r248850): Can't build compiler-rt on OS X with a locally built and installed clang"
   href="https://llvm.org/bugs/show_bug.cgi?id=25465">25465</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Regression(r248850): Can't build compiler-rt on OS X with a locally built and installed clang
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>compiler-rt
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>compiler-rt
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>nicolasweber@gmx.de
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>At r248853 (the regression is at r248850 I think, but with r248853 I get the
same build errors as on trunk -- the two follow-up commits to 248850 fixed a
few bugs):

0. Build llvm/clang/libcxx, then run `ninja install`.
1. Check out compiler-rt somewhere.
2. Set up the compiler-rt build to use the just-installed clang for building:
cmake -GNinja -DCMAKE_C_COMPILER=path/to/llvm-bootstrap-install/bin/clang
-DCMAKE_CXX_COMPILER=path/to/llvm-bootstrap-install/bin/clang++
-DLLVM_CONFIG_PATH=path/to/llvm-bootstrap-install/Release+Asserts/bin/llvm-config
../compiler-rt
3. `ninja`


Build fails like so:

[892/2689] Building C object
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/aeabi_frsub.c.o
FAILED:
/Users/thakis/src/chromefetch/src/third_party/llvm-bootstrap-install/bin/clang 
 -fPIC -fvisibility=hidden -DVISIBILITY_HIDDEN -Wall -fomit-frame-pointer -arch
armv7 -isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk
   -isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.0.sdk
-arch armv7 -mfloat-abi=hard -target thumbv7-apple-darwin-eabi -MMD -MT
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/aeabi_frsub.c.o
-MF
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/aeabi_frsub.c.o.d
-o
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/aeabi_frsub.c.o
  -c
/Users/thakis/src/chromefetch/src/crttest/compiler-rt/lib/builtins/arm/aeabi_frsub.c
error: unable to create target: 'No available targets are compatible with this
triple, see -version for the available targets.'
1 error generated.
[892/2689] Building C object
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/aeabi_drsub.c.o
FAILED:
/Users/thakis/src/chromefetch/src/third_party/llvm-bootstrap-install/bin/clang 
 -fPIC -fvisibility=hidden -DVISIBILITY_HIDDEN -Wall -fomit-frame-pointer -arch
armv7 -isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk
   -isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.0.sdk
-arch armv7 -mfloat-abi=hard -target thumbv7-apple-darwin-eabi -MMD -MT
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/aeabi_drsub.c.o
-MF
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/aeabi_drsub.c.o.d
-o
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/aeabi_drsub.c.o
  -c
/Users/thakis/src/chromefetch/src/crttest/compiler-rt/lib/builtins/arm/aeabi_drsub.c
error: unable to create target: 'No available targets are compatible with this
triple, see -version for the available targets.'
1 error generated.
[892/2689] Building ASM object
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/divmodsi4.S.o
FAILED:
/Users/thakis/src/chromefetch/src/third_party/llvm-bootstrap-install/bin/clang 
 -fPIC -fvisibility=hidden -DVISIBILITY_HIDDEN -Wall -fomit-frame-pointer   
-isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.0.sdk
-arch armv7 -mfloat-abi=hard -target thumbv7-apple-darwin-eabi -MMD -MT
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/divmodsi4.S.o
-MF
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/divmodsi4.S.o.d
-o
lib/builtins/CMakeFiles/clang_rt.hard_pic_armv7_macho_embedded.dir/arm/divmodsi4.S.o
-c
/Users/thakis/src/chromefetch/src/crttest/compiler-rt/lib/builtins/arm/divmodsi4.S
clang -cc1as: error: unknown target triple 'armv7-apple-ios9.0.0-eabi', please
use -triple or -arch
[892/26



Things work fine at 248849. Things also work fine if I don't pass
-DCMAKE_C_COMPILER and -DCMAKE_CXX_COMPILER.</pre>
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