Meson: Fix dependency lookup and generate ftconfig.h
[meson] Fix dependency lookup and generate `ftconfig.h`. - zlib: If not found on the system, meson can build it as a subproject. We thus never use the (outdated) zlib support that comes with FreeType. Doing so has the additional advantage that the zlib code can be shared with other projects like GLib if both are subprojects of an application. - harfbuzz: Build as a subproject if not found on the system. - 'QUESTION: What if the compiler doesn't support `-D` but uses `/D` instead as on Windows?' Answer: Meson translate arguments for us. - visibility: Replace self-made code with meson-specific solution. * meson.build (ft2_defines): Rewrite logic to set and handle it. (process_header_command): New variable, previously called `ftoption_command`. (ftoption_command, ftconfig_command): New variables. (zlib_option): Removed. (zlib_dep): New variable. (ft2_deps): Updated. (harfbuzz_dep): Updated. (ftconfig_h_in, ftconfig_h): New variables. (ft2_sources): Updated. (ft2_lib): Updated, handle visibility. (summary): Updted. * meson_options.txt (zlib): Updated.
This commit is contained in:
Xavier Claessens
Werner Lemberg
parent
e11cc40a2e
commit
2c40559609
29
ChangeLog
29
ChangeLog
@ -1,3 +1,32 @@
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2021-02-09 Xavier Claessens <xavier.claessens@collabora.com>
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[meson] Fix dependency lookup and generate `ftconfig.h`.
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- zlib: If not found on the system, meson can build it as a
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subproject. We thus never use the (outdated) zlib support that
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comes with FreeType. Doing so has the additional advantage that
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the zlib code can be shared with other projects like GLib if both
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are subprojects of an application.
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- harfbuzz: Build as a subproject if not found on the system.
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- 'QUESTION: What if the compiler doesn't support `-D` but uses `/D`
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instead as on Windows?' Answer: Meson translate arguments for us.
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- visibility: Replace self-made code with meson-specific solution.
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* meson.build (ft2_defines): Rewrite logic to set and handle it.
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(process_header_command): New variable, previously called
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`ftoption_command`.
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(ftoption_command, ftconfig_command): New variables.
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(zlib_option): Removed.
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(zlib_dep): New variable.
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(ft2_deps): Updated.
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(harfbuzz_dep): Updated.
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(ftconfig_h_in, ftconfig_h): New variables.
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(ft2_sources): Updated.
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(ft2_lib): Updated, handle visibility.
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(summary): Updted.
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* meson_options.txt (zlib): Updated.
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2021-02-09 Xavier Claessens <xavier.claessens@collabora.com>
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* meson.build: Fix resource compilation on Windows.
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95
meson.build
95
meson.build
@ -170,7 +170,7 @@ ft2_config_headers = files([
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'include/freetype/config/public-macros.h',
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])
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ft2_defines = []
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ft2_defines = ['-DFT2_BUILD_LIBRARY=1']
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# System support file.
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@ -182,13 +182,6 @@ has_unistd_h = cc.has_header('unistd.h')
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has_fcntl_h = cc.has_header('fcntl.h')
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has_sys_mman_h = cc.has_header('sys/mman.h')
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if has_unistd_h
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ft2_defines += ['-DHAVE_UNISTD_H=1']
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endif
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if has_fcntl_h
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ft2_defines += ['-DHAVE_FCNTL_H']
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endif
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mmap_option = get_option('mmap')
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if mmap_option.auto()
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use_mmap = has_unistd_h and has_fcntl_h and has_sys_mman_h
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@ -229,27 +222,24 @@ ft2_deps = []
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# Generate `ftoption.h` based on available dependencies.
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ftoption_command = [python_exe,
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process_header_command = [python_exe,
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files('builds/meson/process_ftoption_h.py'),
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'@INPUT@', '--output=@OUTPUT@']
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ftoption_command = process_header_command
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# GZip support
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have_zlib='no'
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zlib_option = get_option('zlib')
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if zlib_option == 'disabled'
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ftoption_command += ['--disable=FT_CONFIG_OPTION_USE_ZLIB']
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else
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have_zlib='yes'
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ftoption_command += ['--enable=FT_CONFIG_OPTION_USE_ZLIB']
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if zlib_option == 'builtin'
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ftoption_command += ['--disable=FT_CONFIG_OPTION_SYSTEM_ZLIB']
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else
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# Probe for the system version.
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zlib_system = dependency('zlib', required: zlib_option == 'system')
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ft2_deps += [zlib_system]
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ftoption_command += ['--enable=FT_CONFIG_OPTION_SYSTEM_ZLIB']
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endif
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zlib_dep = dependency('zlib', required: get_option('zlib'),
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fallback: ['zlib', 'zlib_dep'])
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if zlib_dep.found()
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ftoption_command += [
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'--enable=FT_CONFIG_OPTION_USE_ZLIB',
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'--enable=FT_CONFIG_OPTION_SYSTEM_ZLIB',
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]
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ft2_sources += files(['src/gzip/ftgzip.c',])
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ft2_deps += [zlib_dep]
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else
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ftoption_command += ['--disable=FT_CONFIG_OPTION_USE_ZLIB']
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endif
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# BZip2 support
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@ -270,7 +260,10 @@ endif
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# Harfbuzz support
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harfbuzz_dep = dependency('harfbuzz',
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version: '>= 2.0.0',
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required: get_option('harfbuzz'))
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required: get_option('harfbuzz'),
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fallback: ['harfbuzz', 'libharfbuzz_dep'],
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default_options : ['freetype=disabled',
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'fontconfig=disabled'])
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if harfbuzz_dep.found()
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ftoption_command += ['--enable=FT_CONFIG_OPTION_USE_HARFBUZZ']
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ft2_deps += [harfbuzz_dep]
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@ -292,39 +285,43 @@ ftoption_h = custom_target('ftoption.h',
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install_dir: 'include/freetype2/freetype/config',
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)
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ft2_sources += ftoption_h
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# QUESTION: What if the compiler doesn't support `-D` but uses `/D` instead
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# as on Windows?
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#
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# Other build systems have something like c_defines to list defines in a
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# more portable way. For now assume the compiler supports `-D` (hint: Visual
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# Studio does).
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ft2_defines += ['-DFT2_BUILD_LIBRARY=1']
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ft2_defines += ['-DFT_CONFIG_OPTIONS_H=<ftoption.h>']
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if host_machine.system() == 'windows'
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ft2_defines += ['-DDLL_EXPORT=1']
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endif
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# Generate `ftconfig.h`
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# Ensure that the `ftoption.h` file generated above will be used to build
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# FreeType. Unfortunately, and very surprisingly, configure_file() does not
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# support putting the output file in a sub-directory, so we have to override
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# the default which is `<freetype/config/ftoption.h>`.
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#
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# It would be cleaner to generate the file directly into
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# `${MESON_BUILD_DIR}/freetype/config/ftoption.h`. See
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# 'https://github.com/mesonbuild/meson/issues/2320' for details.
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ft2_defines += ['-DFT_CONFIG_OPTIONS_H=<ftoption.h>']
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ft2_c_args = ft2_defines
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if cc.has_function_attribute('visibility:hidden')
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ft2_c_args += ['-fvisibility=hidden']
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ftconfig_command = process_header_command
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if has_unistd_h
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ftconfig_command += '--enable=HAVE_UNISTD_H'
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endif
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if has_fcntl_h
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ftconfig_command += '--enable=HAVE_FCNTL_H'
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endif
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if host_machine.system() in ['linux', 'darwin', 'cygwin']
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ftconfig_h_in = files('builds/unix/ftconfig.h.in')
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else
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ftconfig_h_in = files('include/freetype/config/ftconfig.h')
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endif
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ftconfig_h = custom_target('ftconfig.h',
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input: ftconfig_h_in,
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output: 'ftconfig.h',
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command: ftconfig_command,
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install: true,
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install_dir: 'include/freetype2/freetype/config',
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)
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ft2_sources += ftconfig_h
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ft2_defines += ['-DFT_CONFIG_CONFIG_H=<ftconfig.h>']
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ft2_lib = library('freetype',
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sources: ft2_sources + [ftmodule_h],
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c_args: ft2_c_args,
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c_args: ft2_defines,
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gnu_symbol_visibility: 'hidden',
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include_directories: ft2_includes,
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dependencies: ft2_deps,
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install: true,
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@ -378,7 +375,7 @@ gen_docs = custom_target('freetype2 reference documentation',
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summary({'OS': host_machine.system(),
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'Zlib': have_zlib,
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'Zlib': zlib_dep.found() ? 'yes' : 'no',
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'Bzip2': bzip2_dep.found() ? 'yes' : 'no',
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'Png': libpng_dep.found() ? 'yes' : 'no',
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'Harfbuzz': harfbuzz_dep.found() ? 'yes' : 'no',
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@ -13,8 +13,7 @@
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option('zlib',
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type: 'combo',
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choices: ['disabled', 'auto', 'builtin', 'system'],
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type: 'feature',
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value: 'auto',
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description: 'Support reading gzip-compressed font files.')
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