cmake/lz4.cmake

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#
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include_guard()

include(cmake/utils.cmake)

FetchContent_DeclareGitHubWithMirror(lz4
  lz4/lz4 v1.10.0
  MD5=0ef5a1dfd7fe28c246275c043531165d
)

FetchContent_GetProperties(lz4)
if(NOT lz4_POPULATED)
  FetchContent_Populate(lz4)

  if(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
    set(APPLE_FLAG "CFLAGS=-isysroot ${CMAKE_OSX_SYSROOT}")
  endif()
  
  add_custom_target(make_lz4 COMMAND ${MAKE_COMMAND} CC=${CMAKE_C_COMPILER} ${NINJA_MAKE_JOBS_FLAG} ${APPLE_FLAG} liblz4.a
    WORKING_DIRECTORY ${lz4_SOURCE_DIR}/lib
    BYPRODUCTS ${lz4_SOURCE_DIR}/lib/liblz4.a
  )
endif()

add_library(lz4 INTERFACE)
target_include_directories(lz4 INTERFACE $<BUILD_INTERFACE:${lz4_SOURCE_DIR}/lib>)
target_link_libraries(lz4 INTERFACE $<BUILD_INTERFACE:${lz4_SOURCE_DIR}/lib/liblz4.a>)
add_dependencies(lz4 make_lz4)