1 files changed, 159 insertions, 0 deletions
diff --git a/lib/jpegli.cmake b/lib/jpegli.cmake
new file mode 100644
index 0000000..f06912f
--- /dev/null
+++ b/lib/jpegli.cmake
@@ -0,0 +1,159 @@
+# Copyright (c) the JPEG XL Project Authors. All rights reserved.
+#
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+include(jxl_lists.cmake)
+
+set(JPEGLI_INTERNAL_LIBS
+  hwy
+  Threads::Threads
+  ${ATOMICS_LIBRARIES}
+)
+
+# JPEGLIB setup
+set(BITS_IN_JSAMPLE 8)
+set(MEM_SRCDST_SUPPORTED 1)
+
+if(JPEGLI_LIBJPEG_LIBRARY_SOVERSION STREQUAL "62")
+  set(JPEG_LIB_VERSION 62)
+elseif(JPEGLI_LIBJPEG_LIBRARY_SOVERSION STREQUAL "7")
+  set(JPEG_LIB_VERSION 70)
+elseif(JPEGLI_LIBJPEG_LIBRARY_SOVERSION STREQUAL "8")
+  set(JPEG_LIB_VERSION 80)
+endif()
+
+configure_file(
+  ../third_party/libjpeg-turbo/jconfig.h.in include/jpegli/jconfig.h)
+configure_file(
+  ../third_party/libjpeg-turbo/jpeglib.h include/jpegli/jpeglib.h COPYONLY)
+configure_file(
+  ../third_party/libjpeg-turbo/jmorecfg.h include/jpegli/jmorecfg.h COPYONLY)
+
+add_library(jpegli-static STATIC EXCLUDE_FROM_ALL "${JPEGXL_INTERNAL_JPEGLI_SOURCES}")
+target_compile_options(jpegli-static PRIVATE "${JPEGXL_INTERNAL_FLAGS}")
+target_compile_options(jpegli-static PUBLIC ${JPEGXL_COVERAGE_FLAGS})
+set_property(TARGET jpegli-static PROPERTY POSITION_INDEPENDENT_CODE ON)
+target_include_directories(jpegli-static PRIVATE
+  "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>"
+  "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>"
+  "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>"
+  "${JXL_HWY_INCLUDE_DIRS}"
+)
+target_include_directories(jpegli-static PUBLIC
+  "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include/jpegli>"
+)
+target_link_libraries(jpegli-static PUBLIC ${JPEGLI_INTERNAL_LIBS})
+
+#
+# Tests for jpegli-static
+#
+
+find_package(JPEG)
+if(JPEG_FOUND AND BUILD_TESTING)
+# TODO(eustas): merge into jxl_tests.cmake?
+
+add_library(jpegli_libjpeg_util-obj OBJECT
+  ${JPEGXL_INTERNAL_JPEGLI_LIBJPEG_HELPER_FILES}
+)
+target_include_directories(jpegli_libjpeg_util-obj PRIVATE
+  "${PROJECT_SOURCE_DIR}"
+  "${JPEG_INCLUDE_DIRS}"
+)
+target_compile_options(jpegli_libjpeg_util-obj PRIVATE
+  "${JPEGXL_INTERNAL_FLAGS}" "${JPEGXL_COVERAGE_FLAGS}")
+
+# Individual test binaries:
+file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/tests)
+foreach (TESTFILE IN LISTS JPEGXL_INTERNAL_JPEGLI_TESTS)
+  # The TESTNAME is the name without the extension or directory.
+  get_filename_component(TESTNAME ${TESTFILE} NAME_WE)
+  add_executable(${TESTNAME} ${TESTFILE}
+    $<TARGET_OBJECTS:jpegli_libjpeg_util-obj>
+    ${JPEGXL_INTERNAL_JPEGLI_TESTLIB_FILES}
+  )
+  target_compile_options(${TESTNAME} PRIVATE
+    ${JPEGXL_INTERNAL_FLAGS}
+    # Add coverage flags to the test binary so code in the private headers of
+    # the library is also instrumented when running tests that execute it.
+    ${JPEGXL_COVERAGE_FLAGS}
+  )
+  target_compile_definitions(${TESTNAME} PRIVATE
+    -DTEST_DATA_PATH="${JPEGXL_TEST_DATA_PATH}")
+  target_include_directories(${TESTNAME} PRIVATE
+    "${PROJECT_SOURCE_DIR}"
+    "${CMAKE_CURRENT_SOURCE_DIR}/include"
+    "${CMAKE_CURRENT_BINARY_DIR}/include"
+  )
+  target_link_libraries(${TESTNAME}
+    hwy
+    jpegli-static
+    gmock
+    GTest::GTest
+    GTest::Main
+    ${JPEG_LIBRARIES}
+  )
+  set_target_properties(${TESTNAME} PROPERTIES LINK_FLAGS "${JPEGXL_COVERAGE_LINK_FLAGS}")
+  # Output test targets in the test directory.
+  set_target_properties(${TESTNAME} PROPERTIES PREFIX "tests/")
+  if (WIN32 AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    set_target_properties(${TESTNAME} PROPERTIES COMPILE_FLAGS "-Wno-error")
+  endif ()
+  # 240 seconds because some build types (e.g. coverage) can be quite slow.
+  gtest_discover_tests(${TESTNAME} DISCOVERY_TIMEOUT 240)
+endforeach ()
+endif()
+
+#
+# Build libjpeg.so that links to libjpeg-static
+#
+
+if (JPEGXL_ENABLE_JPEGLI_LIBJPEG AND NOT APPLE AND NOT WIN32 AND NOT EMSCRIPTEN)
+add_library(jpegli-libjpeg-obj OBJECT "${JPEGXL_INTERNAL_JPEGLI_WRAPPER_SOURCES}")
+target_compile_options(jpegli-libjpeg-obj PRIVATE ${JPEGXL_INTERNAL_FLAGS})
+target_compile_options(jpegli-libjpeg-obj PUBLIC ${JPEGXL_COVERAGE_FLAGS})
+set_property(TARGET jpegli-libjpeg-obj PROPERTY POSITION_INDEPENDENT_CODE ON)
+target_include_directories(jpegli-libjpeg-obj PRIVATE
+  "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>"
+  "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include/jpegli>"
+)
+target_compile_definitions(jpegli-libjpeg-obj PUBLIC
+  ${JPEGLI_LIBJPEG_OBJ_COMPILE_DEFINITIONS}
+)
+set(JPEGLI_LIBJPEG_INTERNAL_OBJECTS $<TARGET_OBJECTS:jpegli-libjpeg-obj>)
+
+file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/jpegli)
+add_library(jpeg SHARED ${JPEGLI_LIBJPEG_INTERNAL_OBJECTS})
+target_link_libraries(jpeg PUBLIC ${JPEGXL_COVERAGE_FLAGS})
+target_link_libraries(jpeg PRIVATE jpegli-static)
+set_target_properties(jpeg PROPERTIES
+  VERSION ${JPEGLI_LIBJPEG_LIBRARY_VERSION}
+  SOVERSION ${JPEGLI_LIBJPEG_LIBRARY_SOVERSION}
+  LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/jpegli"
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/jpegli")
+
+# Add a jpeg.version file as a version script to tag symbols with the
+# appropriate version number.
+set_target_properties(jpeg PROPERTIES
+  LINK_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/jpegli/jpeg.version.${JPEGLI_LIBJPEG_LIBRARY_SOVERSION})
+set_property(TARGET jpeg APPEND_STRING PROPERTY
+  LINK_FLAGS " -Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/jpegli/jpeg.version.${JPEGLI_LIBJPEG_LIBRARY_SOVERSION}")
+
+if (JPEGXL_INSTALL_JPEGLI_LIBJPEG)
+  install(TARGETS jpeg
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+  install(
+    DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/include/jpegli/"
+    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
+endif()
+
+# This hides the default visibility symbols from static libraries bundled into
+# the shared library. In particular this prevents exposing symbols from hwy
+# in the shared library.
+if(LINKER_SUPPORT_EXCLUDE_LIBS)
+  set_property(TARGET jpeg APPEND_STRING PROPERTY
+    LINK_FLAGS " ${LINKER_EXCLUDE_LIBS_FLAG}")
+endif()
+endif()