llvm-config: error: components given, but unused

Quuxplusone commented 12 years ago


Bugzilla Link	PR13430
Status	NEW
Importance	P normal
Reported by	Vinson Lee (vlee@freedesktop.org)
Reported on	2012-07-21 15:42:29 -0700
Last modified on	2013-12-05 02:13:29 -0800
Version	3.1
Hardware	PC other
CC	geek4civic@gmail.com, hiyuh.root@gmail.com, llvm-bugs@lists.llvm.org
Fixed by commit(s)
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$ uname
CYGWIN_NT-6.1-WOW64

$ llvm-config.exe --version
3.1

$ llvm-config.exe --libs
-lLLVM-3.1

$ llvm-config.exe --libs all
-lLLVM-3.1
llvm-config: error: components given, but unused

usage: llvm-config <OPTION>... [<COMPONENT>...]

Get various configuration information needed to compile programs which use
LLVM.  Typically called from 'configure' scripts.  Examples:
  llvm-config --cxxflags
  llvm-config --ldflags
  llvm-config --libs engine bcreader scalaropts

Options:
  --version         Print LLVM version.
  --prefix          Print the installation prefix.
  --src-root        Print the source root LLVM was built from.
  --obj-root        Print the object root used to build LLVM.
  --bindir          Directory containing LLVM executables.
  --includedir      Directory containing LLVM headers.
  --libdir          Directory containing LLVM libraries.
  --cppflags        C preprocessor flags for files that include LLVM headers.
  --cflags          C compiler flags for files that include LLVM headers.
  --cxxflags        C++ compiler flags for files that include LLVM headers.
  --ldflags         Print Linker flags.
  --libs            Libraries needed to link against LLVM components.
  --libnames        Bare library names for in-tree builds.
  --libfiles        Fully qualified library filenames for makefile depends.
  --components      List of all possible components.
  --targets-built   List of all targets currently built.
  --host-target     Target triple used to configure LLVM.
  --build-mode      Print build mode of LLVM tree (e.g. Debug or Release).
Typical components:
  all               All LLVM libraries (default).
  engine            Either a native JIT or a bitcode interpreter.

Quuxplusone commented 12 years ago

What is your configuration?

./config.status --version

I guess you are configured with --enable-shared.

It seems llvm-config is still incompatible to shared libs...
See also bug 6823. Note that llvm-config has been rewritten since then.
(For now, I will not mark this as DUPLLICATED)

Quuxplusone commented 12 years ago

I am using llvm supplied from Cygwin.

llvm-3.1-1.cygport
    47  src_compile() {
    48          # leave optimization to build system, fails to dlopen with -O2
    49          CFLAGS=${CFLAGS/-O[0-9]/}
    50          CXXFLAGS=${CXXFLAGS/-O[0-9]/}
    51
    52  #       local gccdir=/usr/lib/gcc/i686-pc-cygwin/$(${CC} -dumpversion)
    53
    54          cd ${B}
    55          cygconf --disable-assertions --enable-optimized --enable-debug-runtime \
    56                  --enable-debug-symbols --enable-targets=all \
    57                  --enable-libffi --enable-shared --disable-embed-stdcxx \
    58                  --with-gcc-toolchain=/usr
    59  #               --with-clang-resource-dir=../lib/clang/i686-pc-cygwin/${PV} \
    60  #               --with-c-include-dirs=${gccdir}/include:/usr/include:/usr/include/w32api
    61
    62          cygmake REQUIRES_RTTI=1
    63  }