diff options
Diffstat (limited to 'os/emscripten/cmake/FindLibLZMA.cmake')
| -rw-r--r-- | os/emscripten/cmake/FindLibLZMA.cmake | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/os/emscripten/cmake/FindLibLZMA.cmake b/os/emscripten/cmake/FindLibLZMA.cmake new file mode 100644 index 000000000..99d1ca640 --- /dev/null +++ b/os/emscripten/cmake/FindLibLZMA.cmake @@ -0,0 +1,20 @@ +# LibLZMA is a recent addition to the emscripten SDK, so it is possible +# someone hasn't updated his SDK yet. Test out if the SDK supports LibLZMA. +include(CheckCXXSourceCompiles) +set(CMAKE_REQUIRED_FLAGS "-sUSE_LIBLZMA=1") + +check_cxx_source_compiles(" + #include <lzma.h> + int main() { return 0; }" + LIBLZMA_FOUND +) + +if (LIBLZMA_FOUND) + add_library(LibLZMA::LibLZMA INTERFACE IMPORTED) + set_target_properties(LibLZMA::LibLZMA PROPERTIES + INTERFACE_COMPILE_OPTIONS "-sUSE_LIBLZMA=1" + INTERFACE_LINK_LIBRARIES "-sUSE_LIBLZMA=1" + ) +else() + message(WARNING "You are using an emscripten SDK without LibLZMA support. Many savegames won't be able to load in OpenTTD. Please apply 'emsdk-liblzma.patch' to your local emsdk installation.") +endif() |