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diff --git a/CMakeLists.txt b/CMakeLists.txt
index 280d4af..c9186df 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -127,6 +127,8 @@ set(JPEGXL_FORCE_SYSTEM_BROTLI false CACHE BOOL
"Force using system installed brotli instead of third_party/brotli source.")
set(JPEGXL_FORCE_SYSTEM_HWY false CACHE BOOL
"Force using system installed highway (libhwy-dev) instead of third_party/highway source.")
+set(JPEGXL_FORCE_SYSTEM_LCMS false CACHE BOOL
+ "Force using system installed lcms instead of third_party/lcms source.")
# Check minimum compiler versions. Older compilers are not supported and fail
# with hard to understand errors.
diff --git a/third_party/CMakeLists.txt b/third_party/CMakeLists.txt
index b5e1899..887d31d 100644
--- a/third_party/CMakeLists.txt
+++ b/third_party/CMakeLists.txt
@@ -201,13 +201,23 @@ if (JPEGXL_ENABLE_SKCMS OR JPEGXL_ENABLE_PLUGINS)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/skcms/LICENSE"
${PROJECT_BINARY_DIR}/LICENSE.skcms COPYONLY)
endif ()
-if (JPEGXL_ENABLE_VIEWERS OR NOT JPEGXL_ENABLE_SKCMS)
- if( NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/lcms/.git" )
- message(SEND_ERROR "Please run git submodule update --init")
+if ((JPEGXL_ENABLE_VIEWERS OR NOT JPEGXL_ENABLE_SKCMS))
+ if(JPEGXL_FORCE_SYSTEM_LCMS)
+ pkg_check_modules(LCMS REQUIRED IMPORTED_TARGET lcms2)
+ add_library(lcms2 INTERFACE IMPORTED GLOBAL)
+ target_link_libraries(lcms2 INTERFACE PkgConfig::LCMS)
+ else()
+ if(JPEGXL_DEP_LICENSE_DIR)
+ configure_file("${JPEGXL_DEP_LICENSE_DIR}/libhwy-dev/copyright"
+ ${PROJECT_BINARY_DIR}/LICENSE.highway COPYONLY)
+ endif() # JPEGXL_DEP_LICENSE_DIR
+ if( NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/lcms/.git" )
+ message(SEND_ERROR "Please run git submodule update --init")
+ endif()
+ include(lcms2.cmake)
+ configure_file("${CMAKE_CURRENT_SOURCE_DIR}/lcms/COPYING"
+ ${PROJECT_BINARY_DIR}/LICENSE.lcms COPYONLY)
endif()
- include(lcms2.cmake)
- configure_file("${CMAKE_CURRENT_SOURCE_DIR}/lcms/COPYING"
- ${PROJECT_BINARY_DIR}/LICENSE.lcms COPYONLY)
endif()
# sjpeg
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