[llvm-bugs] [Bug 27751] New: [libc++, cmake] install-libcxx-headers target fails if using __config_site

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27751

            Bug ID: 27751
           Summary: [libc++, cmake] install-libcxx-headers target fails if
                    using __config_site
           Product: libc++
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: asiri.rathnayake at arm.com
                CC: llvm-bugs at lists.llvm.org, mclow.lists at gmail.com
    Classification: Unclassified

Created attachment 16371
  --> https://llvm.org/bugs/attachment.cgi?id=16371&action=edit
Fix.

To reproduce, configure libc++ such that it requires the __config_site
mechanism, for example:

> cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ \
-DLIBCXX_ENABLE_THREADS=OFF \
-DCMAKE_INSTALL_PREFIX=/path/to/install/
/path/to/llvm

Here the LIBCXX_ENABLE_THREADS=OFF requires the wiring of cmake configuration
options into the final __config header through the __config_site (cmake
generated) header.

Now, attempting to install the libc++ headers with:

> make install-libcxx-headers

Fails because it cannot find the __generated_config header (an intermediate
file generated to glue __config and __config_site).

The attached patch fixes this issue. I'm not too familiar with cmake, please
check and apply as appropriate.

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20160515/db962c22/attachment.html>