Error building in OSX Mojave.

[NfNitLoop]

I've been trying to use libui (via libui-rs) but I'm getting build errors. So I tried just downloading the C version of the library and building that.

steps:

brew install cmake
git clone https://github.com/andlabs/libui.git
cd libui
mkdir build
cd build
cmake ..

Output:

-- The C compiler identification is AppleClang 10.0.0.10001145
-- The CXX compiler identification is AppleClang 10.0.0.10001145
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -- broken
CMake Error at /usr/local/Cellar/cmake/3.13.1/share/cmake/Modules/CMakeTestCXXCompiler.cmake:45 (message):
  The C++ compiler

    "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /Users/codyc/programs/rust/libui/build/CMakeFiles/CMakeTmp
    
    Run Build Command:"/usr/bin/make" "cmTC_d7a8a/fast"
    /Applications/Xcode.app/Contents/Developer/usr/bin/make -f CMakeFiles/cmTC_d7a8a.dir/build.make CMakeFiles/cmTC_d7a8a.dir/build
    Building CXX object CMakeFiles/cmTC_d7a8a.dir/testCXXCompiler.cxx.o
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++    -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk -mmacosx-version-min=10.8   -o CMakeFiles/cmTC_d7a8a.dir/testCXXCompiler.cxx.o -c /Users/codyc/programs/rust/libui/build/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
    warning: include path for stdlibc++ headers not found; pass '-std=libc++' on the command line to use the libc++ standard library instead [-Wstdlibcxx-not-found]
    1 warning generated.
    Linking CXX executable cmTC_d7a8a
    /usr/local/Cellar/cmake/3.13.1/bin/cmake -E cmake_link_script CMakeFiles/cmTC_d7a8a.dir/link.txt --verbose=1
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++    -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk -mmacosx-version-min=10.8 -Wl,-search_paths_first -Wl,-headerpad_max_install_names   CMakeFiles/cmTC_d7a8a.dir/testCXXCompiler.cxx.o  -o cmTC_d7a8a 
    clang: warning: libstdc++ is deprecated; move to libc++ with a minimum deployment target of OS X 10.9 [-Wdeprecated]
    ld: library not found for -lstdc++
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    make[1]: *** [cmTC_d7a8a] Error 1
    make: *** [cmTC_d7a8a/fast] Error 2
    

  

  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:35 (project)


-- Configuring incomplete, errors occurred!
See also "/Users/codyc/programs/rust/libui/build/CMakeFiles/CMakeOutput.log".
See also "/Users/codyc/programs/rust/libui/build/CMakeFiles/CMakeError.log".

I installed cmake from Homebrew, and I'm using XCode 10.1. The README.md says that the requirements for macOS are "nothing specific, as long as you can build Cocoa programs." Is XCode not enough for that?

[mischnic]

CMake doesn't seem to support Xcode 10 under specific circumstances.
This is a duplicate of #422

[NfNitLoop]

Oh, thanks! I'd searched but didn't find that one. I'm fine closing this one as a duplicate. Thanks for the quick response! 👍

[mischnic]

@NfNitLoop If you only want to build libui locally, then this change might make CMake work.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c7193fbb..39f8fd7f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,7 +16,7 @@ cmake_minimum_required(VERSION 3.1.0 FATAL_ERROR)
 # TODO figure out what other variables must be set with CACHE
 # TODO figure out if FORCE is needed here
 # TODO figure out whether STRING "" is best or if something else is better; also what FORCE does because I forget and later I say it's needed
-set(CMAKE_OSX_DEPLOYMENT_TARGET "10.8" CACHE STRING "" FORCE)
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.9" CACHE STRING "" FORCE)
 
 # we want to disable incremental linking
 # see also: