Build C API script

ci/build_capi_win.cmd

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+echo Building for x86_64...
+call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
+set build_dir=build-capi-windows-x64
+shift
+echo Preparing directories...
+rmdir /s /q %build_dir%
+mkdir %build_dir%
+pushd %build_dir%
+set arguments=-DENABLE_DFT=ON -DENABLE_CAPI_BUILD=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=C:/LLVM9/bin/clang-cl.exe
+echo Running cmake -GNinja %arguments%  ..
+cmake -GNinja %arguments% .. || exit /b
+echo Running ninja...
+ninja kfr_capi || exit /b
+popd
+
+echo Building for x86...
+call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars32.bat"
+set build_dir=build-capi-windows-x32
+shift
+echo Preparing directories...
+rmdir /s /q %build_dir%
+mkdir %build_dir%
+pushd %build_dir%
+set arguments=-DENABLE_DFT=ON -DENABLE_CAPI_BUILD=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS=-m32 -DCMAKE_CXX_COMPILER=C:/LLVM9/bin/clang-cl.exe
+echo Running cmake -GNinja %arguments%  ..
+cmake -GNinja %arguments% .. || exit /b
+echo Running ninja...
+ninja kfr_capi || exit /b
+popd