* CMakeLists.txt: Make cmake handle disabled dependencies correctly.
Include 'CMakeDependentOption'. Replace `FT_WITH_XXX` options with `FT_DISABLE_XXX` and `FT_REQUIRE_XXX` pairs. Update option logic accordingly. Fixes #1066.
This commit is contained in:
AnuthaDev
Werner Lemberg
parent
5bcaf51b61
commit
1f742f05bf
153
CMakeLists.txt
153
CMakeLists.txt
@ -12,13 +12,17 @@
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# fully.
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#
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#
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# The following will 1. create a build directory and 2. change into it and
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# The following will (1) create a build directory, and (2) change into it and
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# call cmake to configure the build with default parameters as a static
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# library. See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html
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# for information about Debug, Release, etc. builds.
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# library. See
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#
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# https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html
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#
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# for information about debug or release builds, for example
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#
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# cmake -B build -D CMAKE_BUILD_TYPE=Release
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#
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#
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# For a dynamic library, use
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#
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# cmake -B build -D BUILD_SHARED_LIBS=true -D CMAKE_BUILD_TYPE=Release
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@ -39,7 +43,8 @@
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#
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# cmake -E chdir build cmake -G Xcode -D IOS_PLATFORM=SIMULATOR64 ..
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#
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# Finally, build the project with:
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#
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# Finally, build the project with
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#
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# cmake --build build
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#
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@ -56,40 +61,47 @@
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#
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# Some notes.
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#
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# . `cmake' creates configuration files in
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# - `cmake' creates configuration files in
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#
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# <build-directory>/include/freetype/config
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#
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# which should be further modified if necessary.
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#
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# . You can use `cmake' directly on a freshly cloned FreeType git
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# - You can use `cmake' directly on a freshly cloned FreeType git
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# repository.
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#
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# . `CMakeLists.txt' is provided as-is since it is normally not used by the
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# - `CMakeLists.txt' is provided as-is since it is normally not used by the
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# developer team.
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#
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# . Set the `FT_WITH_ZLIB', `FT_WITH_BZIP2', `FT_WITH_PNG',
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# `FT_WITH_HARFBUZZ', and `FT_WITH_BROTLI' CMake variables to `ON' to
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# force using a dependency. Leave a variable undefined (which is the
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# default) to use the dependency only if it is available. Example:
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# - Set the `FT_REQUIRE_ZLIB', `FT_REQUIRE_BZIP2', `FT_REQUIRE_PNG',
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# `FT_REQUIRE_HARFBUZZ', and `FT_REQUIRE_BROTLI' CMake variables to `ON'
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# or `TRUE' to force using a dependency. Leave a variable undefined
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# (which is the default) to use the dependency only if it is available.
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# Example:
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#
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# cmake -B build -D FT_WITH_ZLIB=ON \
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# -D FT_WITH_BZIP2=ON \
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# -D FT_WITH_PNG=ON \
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# -D FT_WITH_HARFBUZZ=ON \
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# -D FT_WITH_BROTLI=ON [...]
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# cmake -B build -D FT_REQUIRE_ZLIB=TRUE \
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# -D FT_REQUIRE_BZIP2=TRUE \
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# -D FT_REQUIRE_PNG=TRUE \
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# -D FT_REQUIRE_HARFBUZZ=TRUE \
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# -D FT_REQUIRE_BROTLI=TRUE [...]
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#
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# Set `CMAKE_DISABLE_FIND_PACKAGE_XXX=TRUE' to disable a dependency completely
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# (where `XXX' is a CMake package name like `BZip2'). Example for disabling all
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# - Set `FT_DISABLE_XXX=TRUE' to disable a dependency completely (where
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# `XXX' is a CMake package name like `BZip2'). Example for disabling all
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# dependencies:
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#
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# cmake -B build -D CMAKE_DISABLE_FIND_PACKAGE_ZLIB=TRUE \
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# -D CMAKE_DISABLE_FIND_PACKAGE_BZip2=TRUE \
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# -D CMAKE_DISABLE_FIND_PACKAGE_PNG=TRUE \
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# -D CMAKE_DISABLE_FIND_PACKAGE_HarfBuzz=TRUE \
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# -D CMAKE_DISABLE_FIND_PACKAGE_BrotliDec=TRUE [...]
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# cmake -B build -D FT_DISABLE_ZLIB=TRUE \
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# -D FT_DISABLE_BZIP2=TRUE \
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# -D FT_DISABLE_PNG=TRUE \
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# -D FT_DISABLE_HARFBUZZ=TRUE \
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# -D FT_DISABLE_BROTLI=TRUE [...]
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#
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# . Installation of FreeType can be controlled with the CMake variables
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# - NOTE: If a package is set as DISABLED, it cannot be set as REQUIRED
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# without unsetting the DISABLED value first. For example, if
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# `FT_DISABLE_HARFBUZZ=TRUE' has been set (Cache is present), you need to
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# call `FT_DISABLE_HARFBUZZ=FALSE' before calling
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# `FT_REQUIRE_HARFBUZZ=TRUE'.
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#
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# - Installation of FreeType can be controlled with the CMake variables
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# `SKIP_INSTALL_HEADERS', `SKIP_INSTALL_LIBRARIES', and `SKIP_INSTALL_ALL'
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# (this is compatible with the same CMake variables in zlib's CMake
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# support).
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@ -109,6 +121,7 @@ if (NOT CMAKE_VERSION VERSION_LESS 3.3)
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endif ()
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include(CheckIncludeFile)
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include(CMakeDependentOption)
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# CMAKE_TOOLCHAIN_FILE must be set before `project' is called, which
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# configures the base build environment and references the toolchain file
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@ -171,13 +184,37 @@ string(REGEX REPLACE
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math(EXPR LIBRARY_SOVERSION "${LIBTOOL_CURRENT} - ${LIBTOOL_AGE}")
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set(LIBRARY_VERSION "${LIBRARY_SOVERSION}.${LIBTOOL_AGE}.${LIBTOOL_REVISION}")
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# External dependency library detection is automatic. See the notes at the top
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# of this file, for how to force or disable dependencies completely.
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option(FT_WITH_ZLIB "Use system zlib instead of internal library." OFF)
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option(FT_WITH_BZIP2 "Support bzip2 compressed fonts." OFF)
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option(FT_WITH_PNG "Support PNG compressed OpenType embedded bitmaps." OFF)
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option(FT_WITH_HARFBUZZ "Improve auto-hinting of OpenType fonts." OFF)
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option(FT_WITH_BROTLI "Support compressed WOFF2 fonts." OFF)
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# External dependency library detection is automatic. See the notes at the
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# top of this file, for how to force or disable dependencies completely.
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option(FT_DISABLE_ZLIB
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"Disable use of system zlib and use internal zlib library instead." OFF)
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cmake_dependent_option(FT_REQUIRE_ZLIB
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"Require system zlib instead of internal zlib library." OFF
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"NOT FT_DISABLE_ZLIB" OFF)
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option(FT_DISABLE_BZIP2
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"Disable support of bzip2 compressed fonts." OFF)
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cmake_dependent_option(FT_REQUIRE_BZIP2
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"Require support of bzip2 compressed fonts." OFF
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"NOT FT_DISABLE_BZIP2" OFF)
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option(FT_DISABLE_PNG
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"Disable support of PNG compressed OpenType embedded bitmaps." OFF)
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cmake_dependent_option(FT_REQUIRE_PNG
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"Require support of PNG compressed OpenType embedded bitmaps." OFF
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"NOT FT_DISABLE_PNG" OFF)
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option(FT_DISABLE_HARFBUZZ
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"Disable HarfBuzz (used for improving auto-hinting of OpenType fonts)." OFF)
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cmake_dependent_option(FT_REQUIRE_HARFBUZZ
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"Require HarfBuzz for improving auto-hinting of OpenType fonts." OFF
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"NOT FT_DISABLE_HARFBUZZ" OFF)
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option(FT_DISABLE_BROTLI
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"Disable support of compressed WOFF2 fonts." OFF)
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cmake_dependent_option(FT_REQUIRE_BROTLI
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"Require support of compressed WOFF2 fonts." OFF
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"NOT FT_DISABLE_BROTLI" OFF)
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# Disallow in-source builds
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@ -208,35 +245,45 @@ endif ()
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# Find dependencies
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set(HARFBUZZ_MIN_VERSION "2.0.0")
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if (FT_WITH_HARFBUZZ)
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find_package(HarfBuzz ${HARFBUZZ_MIN_VERSION} REQUIRED)
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else ()
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find_package(HarfBuzz ${HARFBUZZ_MIN_VERSION})
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if (NOT FT_DISABLE_HARFBUZZ)
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set(HARFBUZZ_MIN_VERSION "2.0.0")
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if (FT_REQUIRE_HARFBUZZ)
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find_package(HarfBuzz ${HARFBUZZ_MIN_VERSION} REQUIRED)
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else ()
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find_package(HarfBuzz ${HARFBUZZ_MIN_VERSION})
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endif ()
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endif ()
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if (FT_WITH_PNG)
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find_package(PNG REQUIRED)
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else ()
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find_package(PNG)
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if (NOT FT_DISABLE_PNG)
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if (FT_REQUIRE_PNG)
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find_package(PNG REQUIRED)
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else ()
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find_package(PNG)
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endif ()
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endif ()
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if (FT_WITH_ZLIB)
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find_package(ZLIB REQUIRED)
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else ()
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find_package(ZLIB)
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if (NOT FT_DISABLE_ZLIB)
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if (FT_REQUIRE_ZLIB)
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find_package(ZLIB REQUIRED)
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else ()
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find_package(ZLIB)
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endif ()
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endif ()
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if (FT_WITH_BZIP2)
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find_package(BZip2 REQUIRED)
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else ()
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find_package(BZip2)
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if (NOT FT_DISABLE_BZIP2)
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if (FT_REQUIRE_BZIP2)
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find_package(BZip2 REQUIRED)
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else ()
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find_package(BZip2)
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endif ()
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endif ()
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if (FT_WITH_BROTLI)
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find_package(BrotliDec REQUIRED)
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else ()
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find_package(BrotliDec)
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if (NOT FT_DISABLE_BROTLI)
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if (FT_REQUIRE_BROTLI)
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find_package(BrotliDec REQUIRED)
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else ()
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find_package(BrotliDec)
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endif ()
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endif ()
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# Create the configuration file
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@ -426,7 +473,7 @@ target_include_directories(
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PRIVATE
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${CMAKE_CURRENT_BINARY_DIR}/include
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${CMAKE_CURRENT_SOURCE_DIR}/include
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# Make <ftconfig.h> available for builds/unix/ftsystem.c.
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${CMAKE_CURRENT_BINARY_DIR}/include/freetype/config
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)
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