Commit 1f742f05 authored by Anurag Thakur's avatar Anurag Thakur Committed by Werner Lemberg
Browse files

* 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.
parent 5bcaf51b
......@@ -12,13 +12,17 @@
# fully.
#
#
# The following will 1. create a build directory and 2. change into it and
# The following will (1) create a build directory, and (2) change into it and
# call cmake to configure the build with default parameters as a static
# library. See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html
# for information about Debug, Release, etc. builds.
# library. See
#
# https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html
#
# for information about debug or release builds, for example
#
# cmake -B build -D CMAKE_BUILD_TYPE=Release
#
#
# For a dynamic library, use
#
# cmake -B build -D BUILD_SHARED_LIBS=true -D CMAKE_BUILD_TYPE=Release
......@@ -39,7 +43,8 @@
#
# cmake -E chdir build cmake -G Xcode -D IOS_PLATFORM=SIMULATOR64 ..
#
# Finally, build the project with:
#
# Finally, build the project with
#
# cmake --build build
#
......@@ -56,40 +61,47 @@
#
# Some notes.
#
# . `cmake' creates configuration files in
# - `cmake' creates configuration files in
#
# <build-directory>/include/freetype/config
#
# which should be further modified if necessary.
#
# . You can use `cmake' directly on a freshly cloned FreeType git
# - You can use `cmake' directly on a freshly cloned FreeType git
# repository.
#
# . `CMakeLists.txt' is provided as-is since it is normally not used by the
# - `CMakeLists.txt' is provided as-is since it is normally not used by the
# developer team.
#
# . Set the `FT_WITH_ZLIB', `FT_WITH_BZIP2', `FT_WITH_PNG',
# `FT_WITH_HARFBUZZ', and `FT_WITH_BROTLI' CMake variables to `ON' to
# force using a dependency. Leave a variable undefined (which is the
# default) to use the dependency only if it is available. Example:
# - Set the `FT_REQUIRE_ZLIB', `FT_REQUIRE_BZIP2', `FT_REQUIRE_PNG',
# `FT_REQUIRE_HARFBUZZ', and `FT_REQUIRE_BROTLI' CMake variables to `ON'
# or `TRUE' to force using a dependency. Leave a variable undefined
# (which is the default) to use the dependency only if it is available.
# Example:
#
# cmake -B build -D FT_WITH_ZLIB=ON \
# -D FT_WITH_BZIP2=ON \
# -D FT_WITH_PNG=ON \
# -D FT_WITH_HARFBUZZ=ON \
# -D FT_WITH_BROTLI=ON [...]
# cmake -B build -D FT_REQUIRE_ZLIB=TRUE \
# -D FT_REQUIRE_BZIP2=TRUE \
# -D FT_REQUIRE_PNG=TRUE \
# -D FT_REQUIRE_HARFBUZZ=TRUE \
# -D FT_REQUIRE_BROTLI=TRUE [...]
#
# Set `CMAKE_DISABLE_FIND_PACKAGE_XXX=TRUE' to disable a dependency completely
# (where `XXX' is a CMake package name like `BZip2'). Example for disabling all
# - Set `FT_DISABLE_XXX=TRUE' to disable a dependency completely (where
# `XXX' is a CMake package name like `BZip2'). Example for disabling all
# dependencies:
#
# cmake -B build -D CMAKE_DISABLE_FIND_PACKAGE_ZLIB=TRUE \
# -D CMAKE_DISABLE_FIND_PACKAGE_BZip2=TRUE \
# -D CMAKE_DISABLE_FIND_PACKAGE_PNG=TRUE \
# -D CMAKE_DISABLE_FIND_PACKAGE_HarfBuzz=TRUE \
# -D CMAKE_DISABLE_FIND_PACKAGE_BrotliDec=TRUE [...]
# cmake -B build -D FT_DISABLE_ZLIB=TRUE \
# -D FT_DISABLE_BZIP2=TRUE \
# -D FT_DISABLE_PNG=TRUE \
# -D FT_DISABLE_HARFBUZZ=TRUE \
# -D FT_DISABLE_BROTLI=TRUE [...]
#
# - NOTE: If a package is set as DISABLED, it cannot be set as REQUIRED
# without unsetting the DISABLED value first. For example, if
# `FT_DISABLE_HARFBUZZ=TRUE' has been set (Cache is present), you need to
# call `FT_DISABLE_HARFBUZZ=FALSE' before calling
# `FT_REQUIRE_HARFBUZZ=TRUE'.
#
# . Installation of FreeType can be controlled with the CMake variables
# - Installation of FreeType can be controlled with the CMake variables
# `SKIP_INSTALL_HEADERS', `SKIP_INSTALL_LIBRARIES', and `SKIP_INSTALL_ALL'
# (this is compatible with the same CMake variables in zlib's CMake
# support).
......@@ -109,6 +121,7 @@ if (NOT CMAKE_VERSION VERSION_LESS 3.3)
endif ()
include(CheckIncludeFile)
include(CMakeDependentOption)
# CMAKE_TOOLCHAIN_FILE must be set before `project' is called, which
# configures the base build environment and references the toolchain file
......@@ -171,13 +184,37 @@ string(REGEX REPLACE
math(EXPR LIBRARY_SOVERSION "${LIBTOOL_CURRENT} - ${LIBTOOL_AGE}")
set(LIBRARY_VERSION "${LIBRARY_SOVERSION}.${LIBTOOL_AGE}.${LIBTOOL_REVISION}")
# External dependency library detection is automatic. See the notes at the top
# of this file, for how to force or disable dependencies completely.
option(FT_WITH_ZLIB "Use system zlib instead of internal library." OFF)
option(FT_WITH_BZIP2 "Support bzip2 compressed fonts." OFF)
option(FT_WITH_PNG "Support PNG compressed OpenType embedded bitmaps." OFF)
option(FT_WITH_HARFBUZZ "Improve auto-hinting of OpenType fonts." OFF)
option(FT_WITH_BROTLI "Support compressed WOFF2 fonts." OFF)
# External dependency library detection is automatic. See the notes at the
# top of this file, for how to force or disable dependencies completely.
option(FT_DISABLE_ZLIB
"Disable use of system zlib and use internal zlib library instead." OFF)
cmake_dependent_option(FT_REQUIRE_ZLIB
"Require system zlib instead of internal zlib library." OFF
"NOT FT_DISABLE_ZLIB" OFF)
option(FT_DISABLE_BZIP2
"Disable support of bzip2 compressed fonts." OFF)
cmake_dependent_option(FT_REQUIRE_BZIP2
"Require support of bzip2 compressed fonts." OFF
"NOT FT_DISABLE_BZIP2" OFF)
option(FT_DISABLE_PNG
"Disable support of PNG compressed OpenType embedded bitmaps." OFF)
cmake_dependent_option(FT_REQUIRE_PNG
"Require support of PNG compressed OpenType embedded bitmaps." OFF
"NOT FT_DISABLE_PNG" OFF)
option(FT_DISABLE_HARFBUZZ
"Disable HarfBuzz (used for improving auto-hinting of OpenType fonts)." OFF)
cmake_dependent_option(FT_REQUIRE_HARFBUZZ
"Require HarfBuzz for improving auto-hinting of OpenType fonts." OFF
"NOT FT_DISABLE_HARFBUZZ" OFF)
option(FT_DISABLE_BROTLI
"Disable support of compressed WOFF2 fonts." OFF)
cmake_dependent_option(FT_REQUIRE_BROTLI
"Require support of compressed WOFF2 fonts." OFF
"NOT FT_DISABLE_BROTLI" OFF)
# Disallow in-source builds
......@@ -208,35 +245,45 @@ endif ()
# Find dependencies
set(HARFBUZZ_MIN_VERSION "2.0.0")
if (FT_WITH_HARFBUZZ)
find_package(HarfBuzz ${HARFBUZZ_MIN_VERSION} REQUIRED)
else ()
find_package(HarfBuzz ${HARFBUZZ_MIN_VERSION})
if (NOT FT_DISABLE_HARFBUZZ)
set(HARFBUZZ_MIN_VERSION "2.0.0")
if (FT_REQUIRE_HARFBUZZ)
find_package(HarfBuzz ${HARFBUZZ_MIN_VERSION} REQUIRED)
else ()
find_package(HarfBuzz ${HARFBUZZ_MIN_VERSION})
endif ()
endif ()
if (FT_WITH_PNG)
find_package(PNG REQUIRED)
else ()
find_package(PNG)
if (NOT FT_DISABLE_PNG)
if (FT_REQUIRE_PNG)
find_package(PNG REQUIRED)
else ()
find_package(PNG)
endif ()
endif ()
if (FT_WITH_ZLIB)
find_package(ZLIB REQUIRED)
else ()
find_package(ZLIB)
if (NOT FT_DISABLE_ZLIB)
if (FT_REQUIRE_ZLIB)
find_package(ZLIB REQUIRED)
else ()
find_package(ZLIB)
endif ()
endif ()
if (FT_WITH_BZIP2)
find_package(BZip2 REQUIRED)
else ()
find_package(BZip2)
if (NOT FT_DISABLE_BZIP2)
if (FT_REQUIRE_BZIP2)
find_package(BZip2 REQUIRED)
else ()
find_package(BZip2)
endif ()
endif ()
if (FT_WITH_BROTLI)
find_package(BrotliDec REQUIRED)
else ()
find_package(BrotliDec)
if (NOT FT_DISABLE_BROTLI)
if (FT_REQUIRE_BROTLI)
find_package(BrotliDec REQUIRED)
else ()
find_package(BrotliDec)
endif ()
endif ()
# Create the configuration file
......@@ -426,7 +473,7 @@ target_include_directories(
PRIVATE
${CMAKE_CURRENT_BINARY_DIR}/include
${CMAKE_CURRENT_SOURCE_DIR}/include
# Make <ftconfig.h> available for builds/unix/ftsystem.c.
${CMAKE_CURRENT_BINARY_DIR}/include/freetype/config
)
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment