libtiff not building with clang-cl

[philmb3487]

I'm not able to get libtiff building using the clang-cl utility.

: && /usr/bin/cmake -E vs_link_exe --intdir=contrib/iptcutil/CMakeFiles/iptcutil.dir --rc=/usr/lib/llvm/17/bin/llvm-rc --mt=CMAKE_MT-NOTFOUND --manifests  -- /usr/lib/llvm/17/bin/lld-link /nologo contrib/iptcutil/CMakeFiles/iptcutil.dir/iptcutil.c.obj  /out:contrib/iptcutil/iptcutil.exe /implib:contrib/iptcutil/iptcutil.lib /pdb:contrib/iptcutil/iptcutil.pdb /version:0.0 /MANIFEST:NO /INCREMENTAL:NO /subsystem:console  libtiff/tiff.lib  port/tiff_port.lib  /data/modix/modixslicer/deps/build-msvc-clang/destdir/usr/local/lib/zlib.lib  /data/modix/modixslicer/deps/build-msvc-clang/destdir/usr/local/lib/jpeg-static.lib  /usr/lib/libm.a  kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib && :
LINK: command "/usr/lib/llvm/17/bin/lld-link /nologo contrib/iptcutil/CMakeFiles/iptcutil.dir/iptcutil.c.obj /out:contrib/iptcutil/iptcutil.exe /implib:contrib/iptcutil/iptcutil.lib /pdb:contrib/iptcutil/iptcutil.pdb /version:0.0 /MANIFEST:NO /INCREMENTAL:NO /subsystem:console libtiff/tiff.lib port/tiff_port.lib /data/modix/modixslicer/deps/build-msvc-clang/destdir/usr/local/lib/zlib.lib /data/modix/modixslicer/deps/build-msvc-clang/destdir/usr/local/lib/jpeg-static.lib /usr/lib/libm.a kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib" failed (exit code 1) with the following output:
lld-link: error: unknown file type: fegetround.o
lld-link: error: unknown file type: fegetenv.o
lld-link: error: unknown file type: fesetenv.o
lld-link: error: unknown file type: feholdexcpt.o
lld-link: error: unknown file type: s_ceil.o
lld-link: error: unknown file type: w_log10.o

[philmb3487]

It's doing the file not found stuff again. I have no idea what is going on with this.

-- The C compiler identification is Clang 15.0.7 with MSVC-like command-line
-- The CXX compiler identification is Clang 15.0.7 with MSVC-like command-line
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: /usr/lib/llvm/15/bin/clang-cl
-- Check for working C compiler: /usr/lib/llvm/15/bin/clang-cl - broken
CMake Error at /usr/share/cmake/Modules/CMakeTestCCompiler.cmake:67 (message):
  The C compiler

    "/usr/lib/llvm/15/bin/clang-cl"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: '/data/modix/modixslicer/deps/build-msvc-clang/CMakeFiles/CMakeScratch/TryCompile-xLjLuZ'
    
    Run Build Command(s): /usr/bin/ninja -v cmTC_712fd
    [1/2] /usr/lib/llvm/15/bin/clang-cl  /nologo   --target=x86_64-windows-msvc  /Ob0 /Od /RTC1 -MDd -Z7 /showIncludes /FoCMakeFiles/cmTC_712fd.dir/testCCompiler.c.obj /FdCMakeFiles/cmTC_712fd.dir/ -c -- /data/modix/modixslicer/deps/build-msvc-clang/CMakeFiles/CMakeScratch/TryCompile-xLjLuZ/testCCompiler.c
    [2/2] : && /usr/bin/cmake -E vs_link_exe --intdir=CMakeFiles/cmTC_712fd.dir --rc=/usr/lib/llvm/15/bin/llvm-rc --mt=/usr/lib/llvm/15/bin/llvm-mt --manifests  -- /usr/lib/llvm/15/bin/llvm-link /nologo CMakeFiles/cmTC_712fd.dir/testCCompiler.c.obj  /out:cmTC_712fd.exe /implib:cmTC_712fd.lib /pdb:cmTC_712fd.pdb /version:0.0 /MANIFEST:NO  /debug /INCREMENTAL /subsystem:console  kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib && :
    FAILED: cmTC_712fd.exe 
    : && /usr/bin/cmake -E vs_link_exe --intdir=CMakeFiles/cmTC_712fd.dir --rc=/usr/lib/llvm/15/bin/llvm-rc --mt=/usr/lib/llvm/15/bin/llvm-mt --manifests  -- /usr/lib/llvm/15/bin/llvm-link /nologo CMakeFiles/cmTC_712fd.dir/testCCompiler.c.obj  /out:cmTC_712fd.exe /implib:cmTC_712fd.lib /pdb:cmTC_712fd.pdb /version:0.0 /MANIFEST:NO  /debug /INCREMENTAL /subsystem:console  kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib && :
    LINK: command "/usr/lib/llvm/15/bin/llvm-link /nologo CMakeFiles/cmTC_712fd.dir/testCCompiler.c.obj /out:cmTC_712fd.exe /implib:cmTC_712fd.lib /pdb:cmTC_712fd.pdb /version:0.0 /MANIFEST:NO /debug /INCREMENTAL /subsystem:console kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib" failed (exit code 1) with the following output:
    /usr/lib/llvm/15/bin/llvm-link: No such file or directory
    ninja: build stopped: subcommand failed.
    
    

  

  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:27 (project)


-- Configuring incomplete, errors occurred!
phil@gentoo /data/modix/modixslicer/deps $ /usr/lib/llvm/15/bin/llvm-link --version
LLVM (http://llvm.org/):
  LLVM version 15.0.7
  Optimized build.
  Default target: x86_64-pc-linux-gnu
  Host CPU: znver3

[mstorsjo]

What is invoking llvm-link? Are you accidentally passing the wrong executable name somewhere? The binary llvm-link is never used in such a setting, it's called lld-link.

[philmb3487]

Oh right, I wasn't aware these are two different things. Now the error is back to the first one, with the unknown file types.

[philmb3487]

Maybe my clang needs to be compiled with support for the PE stuff? How would I check this?

[mstorsjo]

One can't omit support for individual object file formats in Clang (only individual architectures), and if you have a distribution provided binary, it most probably has all enabled.

The error from lld-link means that the object file wasn't actually a COFF object file. What does file fegetenv.o say?

[huangqinjin]

From your posted command line, you're linking to /usr/lib/libm.a which is definitely obviously wrong.

[philmb3487]

Ah I see, the issues is that libtiff is trying to link examples, but that won't be working when building the static library.
So disabling that and the build works.