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Do not find_package image libraries if not needed.

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This can be tested by running:
cmake ../ -DWEBP_BUILD_ANIM_UTILS=OFF -DWEBP_BUILD_CWEBP=OFF -DWEBP_BUILD_DWEBP=OFF -DWEBP_BUILD_GIF2WEBP=OFF -DWEBP_BUILD_IMG2WEBP=OFF -DWEBP_BUILD_EXTRAS=OFF

Bug: webp:612

Change-Id: Ie06d8f0535676d6d31ff0047ff7a6c026e16118e
This commit is contained in:
Vincent Rabaud 2023-05-26 00:14:05 +02:00
parent 8dd80ef814
commit 709ec152df
2 changed files with 51 additions and 39 deletions
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10
CMakeLists.txt
View File

@ -99,6 +99,16 @@ if(NOT CMAKE_BUILD_TYPE)
endif()
# Include dependencies.
if(WEBP_BUILD_ANIM_UTILS
OR WEBP_BUILD_CWEBP
OR WEBP_BUILD_DWEBP
OR WEBP_BUILD_EXTRAS
OR WEBP_BUILD_GIF2WEBP
OR WEBP_BUILD_IMG2WEBP)
set(WEBP_FIND_IMG_LIBS TRUE)
else()
set(WEBP_FIND_IMG_LIBS FALSE)
endif()
include(cmake/deps.cmake)
include(GNUInstallDirs)

80
cmake/deps.cmake
View File

@ -74,53 +74,55 @@ endif()
# Find the standard image libraries.
set(WEBP_DEP_IMG_LIBRARIES)
set(WEBP_DEP_IMG_INCLUDE_DIRS)
foreach(I_LIB PNG JPEG TIFF)
# Disable tiff when compiling in static mode as it is failing on Ubuntu.
if(WEBP_LINK_STATIC AND ${I_LIB} STREQUAL "TIFF")
message(STATUS "TIFF is disabled when statically linking.")
continue()
if(WEBP_FIND_IMG_LIBS)
foreach(I_LIB PNG JPEG TIFF)
# Disable tiff when compiling in static mode as it is failing on Ubuntu.
if(WEBP_LINK_STATIC AND ${I_LIB} STREQUAL "TIFF")
message(STATUS "TIFF is disabled when statically linking.")
continue()
endif()
find_package(${I_LIB})
set(WEBP_HAVE_${I_LIB} ${${I_LIB}_FOUND})
if(${I_LIB}_FOUND)
list(APPEND WEBP_DEP_IMG_LIBRARIES ${${I_LIB}_LIBRARIES})
list(APPEND WEBP_DEP_IMG_INCLUDE_DIRS ${${I_LIB}_INCLUDE_DIR}
${${I_LIB}_INCLUDE_DIRS})
endif()
endforeach()
if(WEBP_DEP_IMG_INCLUDE_DIRS)
list(REMOVE_DUPLICATES WEBP_DEP_IMG_INCLUDE_DIRS)
endif()
find_package(${I_LIB})
set(WEBP_HAVE_${I_LIB} ${${I_LIB}_FOUND})
if(${I_LIB}_FOUND)
list(APPEND WEBP_DEP_IMG_LIBRARIES ${${I_LIB}_LIBRARIES})
list(APPEND WEBP_DEP_IMG_INCLUDE_DIRS ${${I_LIB}_INCLUDE_DIR}
${${I_LIB}_INCLUDE_DIRS})
endif()
endforeach()
if(WEBP_DEP_IMG_INCLUDE_DIRS)
list(REMOVE_DUPLICATES WEBP_DEP_IMG_INCLUDE_DIRS)
endif()
# GIF detection, gifdec isn't part of the imageio lib.
include(CMakePushCheckState)
set(WEBP_DEP_GIF_LIBRARIES)
set(WEBP_DEP_GIF_INCLUDE_DIRS)
find_package(GIF)
set(WEBP_HAVE_GIF ${GIF_FOUND})
if(GIF_FOUND)
# GIF find_package only locates the header and library, it doesn't fail
# compile tests when detecting the version, but falls back to 3 (as of at
# least cmake 3.7.2). Make sure the library links to avoid incorrect detection
# when cross compiling.
cmake_push_check_state()
set(CMAKE_REQUIRED_LIBRARIES ${GIF_LIBRARIES})
set(CMAKE_REQUIRED_INCLUDES ${GIF_INCLUDE_DIR})
check_c_source_compiles(
"
# GIF detection, gifdec isn't part of the imageio lib.
include(CMakePushCheckState)
set(WEBP_DEP_GIF_LIBRARIES)
set(WEBP_DEP_GIF_INCLUDE_DIRS)
find_package(GIF)
set(WEBP_HAVE_GIF ${GIF_FOUND})
if(GIF_FOUND)
# GIF find_package only locates the header and library, it doesn't fail
# compile tests when detecting the version, but falls back to 3 (as of at
# least cmake 3.7.2). Make sure the library links to avoid incorrect
# detection when cross compiling.
cmake_push_check_state()
set(CMAKE_REQUIRED_LIBRARIES ${GIF_LIBRARIES})
set(CMAKE_REQUIRED_INCLUDES ${GIF_INCLUDE_DIR})
check_c_source_compiles(
"
#include <gif_lib.h>
int main(void) {
(void)DGifOpenFileHandle;
return 0;
}
"
GIF_COMPILES)
cmake_pop_check_state()
if(GIF_COMPILES)
list(APPEND WEBP_DEP_GIF_LIBRARIES ${GIF_LIBRARIES})
list(APPEND WEBP_DEP_GIF_INCLUDE_DIRS ${GIF_INCLUDE_DIR})
else()
unset(GIF_FOUND)
GIF_COMPILES)
cmake_pop_check_state()
if(GIF_COMPILES)
list(APPEND WEBP_DEP_GIF_LIBRARIES ${GIF_LIBRARIES})
list(APPEND WEBP_DEP_GIF_INCLUDE_DIRS ${GIF_INCLUDE_DIR})
else()
unset(GIF_FOUND)
endif()
endif()
endif()