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CMake: Enable support for clang with gnu-like cmdline on Windows

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reuk 2021-06-02 15:35:15 +01:00
parent 17d967551c
commit db2a809832
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3 changed files with 20 additions and 4 deletions
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16
docs/CMake API.md
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@ -137,6 +137,22 @@ Note that the static library produced by `juce_add_binary_data` automatically se
Building universal binaries that will run on both arm64 and x86_64 can be achieved by
configuring the CMake project with `"-DCMAKE_OSX_ARCHITECTURES=arm64;x86_64"`.
### Building with Clang on Windows
Clang-cl (Clang with MSVC-like command-line) should work by default. If you are generating a Visual
Studio project, and have installed the LLVM package which is distributed with Visual Studio, then
you can configure a Clang-cl build by passing "-T ClangCL" on your configuration commandline.
If you wish to use Clang with GNU-like command-line instead, you can pass
`-DCMAKE_CXX_COMPILER=clang++` and `-DCMAKE_C_COMPILER=clang` on your configuration commandline.
clang++ and clang must be on your `PATH` for this to work. Only more recent versions of CMake
support Clang's GNU-like command-line on Windows. CMake 3.12 is not supported, CMake 3.15 has
support, CMake 3.20 or higher is recommended. Note that CMake doesn't seem to automatically link a
runtime library when building in this configuration, but this can be remedied by setting the
`MSVC_RUNTIME_LIBRARY` property. See the [official
documentation](https://cmake.org/cmake/help/v3.15/prop_tgt/MSVC_RUNTIME_LIBRARY.html) of this
property for usage recommendations.
### A note about compile definitions
Module options and plugin options that would previously have been set in the Projucer can be set on

6
extras/Build/CMake/JUCEHelperTargets.cmake
View file

@ -1,7 +1,7 @@
add_library(juce_recommended_warning_flags INTERFACE)
add_library(juce::juce_recommended_warning_flags ALIAS juce_recommended_warning_flags)
if((CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") OR (CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC"))
if((CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") OR (CMAKE_CXX_COMPILER_FRONTEND_VARIANT STREQUAL "MSVC"))
target_compile_options(juce_recommended_warning_flags INTERFACE "/W4")
elseif((CMAKE_CXX_COMPILER_ID STREQUAL "Clang") OR (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang"))
target_compile_options(juce_recommended_warning_flags INTERFACE
@ -33,7 +33,7 @@ endif()
add_library(juce_recommended_config_flags INTERFACE)
add_library(juce::juce_recommended_config_flags ALIAS juce_recommended_config_flags)
if((CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") OR (CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC"))
if((CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") OR (CMAKE_CXX_COMPILER_FRONTEND_VARIANT STREQUAL "MSVC"))
target_compile_options(juce_recommended_config_flags INTERFACE
$<IF:$<CONFIG:Debug>,/Od,/Ox> $<$<STREQUAL:"${CMAKE_CXX_COMPILER_ID}","MSVC">:/MP> /EHsc)
elseif((CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
@ -49,7 +49,7 @@ endif()
add_library(juce_recommended_lto_flags INTERFACE)
add_library(juce::juce_recommended_lto_flags ALIAS juce_recommended_lto_flags)
if((CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") OR (CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC"))
if((CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") OR (CMAKE_CXX_COMPILER_FRONTEND_VARIANT STREQUAL "MSVC"))
target_compile_options(juce_recommended_lto_flags INTERFACE
$<$<CONFIG:Release>:$<IF:$<STREQUAL:"${CMAKE_CXX_COMPILER_ID}","MSVC">,-GL,-flto>>)
target_link_libraries(juce_recommended_lto_flags INTERFACE

2
extras/Build/CMake/JUCEUtils.cmake
View file

@ -670,7 +670,7 @@ function(juce_add_module module_path)
_juce_link_libs_from_metadata("${module_name}" "${metadata_dict}" linuxLibs)
elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
if((CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") OR (CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC"))
if((CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") OR (CMAKE_CXX_COMPILER_FRONTEND_VARIANT STREQUAL "MSVC"))
if(module_name STREQUAL "juce_gui_basics")
target_compile_options(${module_name} INTERFACE /bigobj)
endif()