[LLVMbugs] [Bug 20840] New: Clang autoconf build doesn't generate PROFILE-PIC version of compiler-rt

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=20840

            Bug ID: 20840
           Summary: Clang autoconf build doesn't generate PROFILE-PIC
                    version of compiler-rt
           Product: compiler-rt
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Keywords: compile-fail
          Severity: normal
          Priority: P
         Component: compiler-rt
          Assignee: unassignedbugs at nondot.org
          Reporter: alaviss0 at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Overview:
  Building LLVM/Clang with GNU autoconf (./configure) doesn't generate
libclang_rt.profile-pic-x86_64.a needed for clang to link with
"-fprofile-instr-generate -fPIC"

Steps to Reproduce:
  1) Compile LLVM/clang with GNU autoconf, below is the options I've used
     ./configure \
        --prefix=/usr \
        --sysconfdir=/etc \
        --enable-shared \
        --enable-libffi \
        --enable-targets=all \
        --disable-expensive-checks \
        --disable-debug-runtime \
        --disable-assertions \
        --with-binutils-include=/usr/include \
        --with-python=/usr/bin/python2 \
        --enable-cxx1y --enable-libcpp \
        --enable-optimized
  2) Build an library with {C,CXX}FLAGS="-fprofile-instr-generate"
Expected Results:
  Build successful with no problems
Actual Results:
  Build failed, GNU ld error:
  /usr/bin/ld: error: cannot open
/usr/bin/../lib/clang/3.6.0/lib/linux/libclang_rt.profile-pic-x86_64.a: No such
file or directory
Additional Information: libclang_rt.profile-pic-x86_64.a presents in cmake
build

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