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2c40559609
freetype/meson.build
Xavier Claessens 2c40559609 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  We thus never use the (outdated) zlib support that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.
2021-02-09 16:11:39 +01:00

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#
# Meson project file for FreeType 2
#
# Copyright (C) 2020-2021 by
# David Turner, Robert Wilhelm, and Werner Lemberg.
#
# This file is part of the FreeType project, and may only be used, modified,
# and distributed under the terms of the FreeType project license,
# LICENSE.TXT. By continuing to use, modify, or distribute this file you
# indicate that you have read the license and understand and accept it
# fully.
project('freetype2', 'c',
meson_version: '>= 0.55.0',
default_options: ['default_library=both'],
version: run_command('builds/meson/extract_freetype_version.py',
'include/freetype/freetype.h').stdout().strip(),
)
#
# Rules to compile the FreeType 2 library itself
#
# Apparently meson doesn't provide a read_file() function, so instead
# running an external command is required.
python = import('python')
python_exe = python.find_installation(required: true)
ft2_so_version = run_command(python_exe,
files('builds/meson/extract_libtool_version.py'),
'--soversion',
files('builds/unix/configure.raw')).stdout().strip()
ft2_pkgconfig_version = run_command(python_exe,
files('builds/meson/extract_libtool_version.py'),
files('builds/unix/configure.raw')).stdout().strip()
ft2_includes = include_directories('include')
# Generate a custom `ftmodule.h` version based on the content of
# `modules.cfg`.
ftmodule_h = custom_target('ftmodule.h',
output: 'ftmodule.h',
input: 'modules.cfg',
command: [python_exe, files('builds/meson/parse_modules_cfg.py'),
'--format=ftmodule.h', '@INPUT@', '--output', '@OUTPUT@'],
install: true,
install_dir: 'include/freetype2/freetype/config',
)
ft2_sources = [ftmodule_h]
# FreeType 2 modules.
ft_main_modules = run_command(python_exe,
files('builds/meson/parse_modules_cfg.py'),
'--format=main-modules',
files('modules.cfg')).stdout().strip().split()
ft2_sources += files([
'src/base/ftbase.c',
'src/base/ftinit.c',
])
foreach mod: ft_main_modules
source = mod
if mod == 'winfonts'
source = 'winfnt'
elif mod == 'cid'
source = 'type1cid'
endif
ft2_sources += 'src/@0@/@1@.c'.format(mod, source)
endforeach
# NOTE: The `gzip` and `bzip2` aux modules are handled through options.
ft_aux_modules = run_command(python_exe,
files('builds/meson/parse_modules_cfg.py'),
'--format=aux-modules',
files('modules.cfg')).stdout().strip().split()
foreach auxmod: ft_aux_modules
source = auxmod
# Most sources are named `src/<module>/<module>.c`, but there are a few
# exceptions handled here.
if auxmod == 'cache'
source = 'ftcache'
elif auxmod == 'lzw'
source = 'ftlzw'
elif auxmod == 'gzip' or auxmod == 'bzip2'
# Handled through options instead, see below.
continue
endif
ft2_sources += 'src/@0@/@1@.c'.format(auxmod, source)
endforeach
# FreeType 2 base extensions.
# Normally configured through `modules.cfg`.
base_extensions = run_command(python_exe,
files('builds/meson/parse_modules_cfg.py'),
'--format=base-extensions-list',
files('modules.cfg')).stdout().split()
foreach ext: base_extensions
ft2_sources += files('src/base/' + ext)
endforeach
# Header files.
ft2_public_headers = files([
'include/freetype/freetype.h',
'include/freetype/ftadvanc.h',
'include/freetype/ftbbox.h',
'include/freetype/ftbdf.h',
'include/freetype/ftbitmap.h',
'include/freetype/ftbzip2.h',
'include/freetype/ftcache.h',
'include/freetype/ftchapters.h',
'include/freetype/ftcolor.h',
'include/freetype/ftdriver.h',
'include/freetype/fterrdef.h',
'include/freetype/fterrors.h',
'include/freetype/ftfntfmt.h',
'include/freetype/ftgasp.h',
'include/freetype/ftglyph.h',
'include/freetype/ftgxval.h',
'include/freetype/ftgzip.h',
'include/freetype/ftimage.h',
'include/freetype/ftincrem.h',
'include/freetype/ftlcdfil.h',
'include/freetype/ftlist.h',
'include/freetype/ftlzw.h',
'include/freetype/ftmac.h',
'include/freetype/ftmm.h',
'include/freetype/ftmodapi.h',
'include/freetype/ftmoderr.h',
'include/freetype/ftotval.h',
'include/freetype/ftoutln.h',
'include/freetype/ftparams.h',
'include/freetype/ftpfr.h',
'include/freetype/ftrender.h',
'include/freetype/ftsizes.h',
'include/freetype/ftsnames.h',
'include/freetype/ftstroke.h',
'include/freetype/ftsynth.h',
'include/freetype/ftsystem.h',
'include/freetype/fttrigon.h',
'include/freetype/fttypes.h',
'include/freetype/ftwinfnt.h',
'include/freetype/t1tables.h',
'include/freetype/ttnameid.h',
'include/freetype/tttables.h',
'include/freetype/tttags.h',
])
ft2_config_headers = files([
'include/freetype/config/ftconfig.h',
'include/freetype/config/ftheader.h',
'include/freetype/config/ftstdlib.h',
'include/freetype/config/integer-types.h',
'include/freetype/config/mac-support.h',
'include/freetype/config/public-macros.h',
])
ft2_defines = ['-DFT2_BUILD_LIBRARY=1']
# System support file.
cc = meson.get_compiler('c')
# NOTE: msys2 on Windows has `unistd.h` and `fcntl.h` but not `sys/mman.h`!
has_unistd_h = cc.has_header('unistd.h')
has_fcntl_h = cc.has_header('fcntl.h')
has_sys_mman_h = cc.has_header('sys/mman.h')
mmap_option = get_option('mmap')
if mmap_option.auto()
use_mmap = has_unistd_h and has_fcntl_h and has_sys_mman_h
else
use_mmap = mmap_option.enabled()
endif
if use_mmap
# This version of ftsystem.c uses mmap() to read input font files.
ft2_sources += files(['builds/unix/ftsystem.c',])
elif host_machine.system() == 'windows'
ft2_sources += files(['builds/windows/ftsystem.c',])
else
ft2_sources += files(['src/base/ftsystem.c',])
endif
# Debug support file
#
# NOTE: Some specialized versions exist for other platforms not supported by
# Meson. Most implementation differences are extremely minor, i.e., in the
# implementation of FT_Message() and FT_Panic(), and getting the `FT2_DEBUG`
# value from the environment, when this is supported. A smaller refactor
# might make these platform-specific files much smaller, and could be moved
# into `ftsystem.c` as well.
#
if host_machine.system() == 'windows'
winmod = import('windows')
ft2_sources += [
'builds/windows/ftdebug.c',
winmod.compile_resources('src/base/ftver.rc'),
]
else
ft2_sources += 'src/base/ftdebug.c'
endif
ft2_deps = []
# Generate `ftoption.h` based on available dependencies.
process_header_command = [python_exe,
files('builds/meson/process_ftoption_h.py'),
'@INPUT@', '--output=@OUTPUT@']
ftoption_command = process_header_command
# GZip support
zlib_dep = dependency('zlib', required: get_option('zlib'),
fallback: ['zlib', 'zlib_dep'])
if zlib_dep.found()
ftoption_command += [
'--enable=FT_CONFIG_OPTION_USE_ZLIB',
'--enable=FT_CONFIG_OPTION_SYSTEM_ZLIB',
]
ft2_sources += files(['src/gzip/ftgzip.c',])
ft2_deps += [zlib_dep]
else
ftoption_command += ['--disable=FT_CONFIG_OPTION_USE_ZLIB']
endif
# BZip2 support
bzip2_dep = cc.find_library('bz2', required: get_option('bzip2'))
if bzip2_dep.found()
ftoption_command += ['--enable=FT_CONFIG_OPTION_USE_BZIP2']
ft2_sources += files(['src/bzip2/ftbzip2.c',])
ft2_deps += [bzip2_dep]
endif
# PNG support
libpng_dep = dependency('libpng', required: get_option('png'))
if libpng_dep.found()
ftoption_command += ['--enable=FT_CONFIG_OPTION_USE_PNG']
ft2_deps += [libpng_dep]
endif
# Harfbuzz support
harfbuzz_dep = dependency('harfbuzz',
version: '>= 2.0.0',
required: get_option('harfbuzz'),
fallback: ['harfbuzz', 'libharfbuzz_dep'],
default_options : ['freetype=disabled',
'fontconfig=disabled'])
if harfbuzz_dep.found()
ftoption_command += ['--enable=FT_CONFIG_OPTION_USE_HARFBUZZ']
ft2_deps += [harfbuzz_dep]
endif
# Brotli decompression support
brotli_dep = dependency('libbrotlidec', required: get_option('brotli'))
if brotli_dep.found()
ftoption_command += ['--enable=FT_CONFIG_OPTION_USE_BROTLI']
ft2_deps += [brotli_dep]
endif
# We can now generate `ftoption.h`.
ftoption_h = custom_target('ftoption.h',
input: 'include/freetype/config/ftoption.h',
output: 'ftoption.h',
command: ftoption_command,
install: true,
install_dir: 'include/freetype2/freetype/config',
)
ft2_sources += ftoption_h
ft2_defines += ['-DFT_CONFIG_OPTIONS_H=<ftoption.h>']
if host_machine.system() == 'windows'
ft2_defines += ['-DDLL_EXPORT=1']
endif
# Generate `ftconfig.h`
ftconfig_command = process_header_command
if has_unistd_h
ftconfig_command += '--enable=HAVE_UNISTD_H'
endif
if has_fcntl_h
ftconfig_command += '--enable=HAVE_FCNTL_H'
endif
if host_machine.system() in ['linux', 'darwin', 'cygwin']
ftconfig_h_in = files('builds/unix/ftconfig.h.in')
else
ftconfig_h_in = files('include/freetype/config/ftconfig.h')
endif
ftconfig_h = custom_target('ftconfig.h',
input: ftconfig_h_in,
output: 'ftconfig.h',
command: ftconfig_command,
install: true,
install_dir: 'include/freetype2/freetype/config',
)
ft2_sources += ftconfig_h
ft2_defines += ['-DFT_CONFIG_CONFIG_H=<ftconfig.h>']
ft2_lib = library('freetype',
sources: ft2_sources + [ftmodule_h],
c_args: ft2_defines,
gnu_symbol_visibility: 'hidden',
include_directories: ft2_includes,
dependencies: ft2_deps,
install: true,
version: ft2_so_version,
)
# To be used by other projects including this one through subproject().
freetype2_dep = declare_dependency(
include_directories: ft2_includes,
link_with: ft2_lib,
version: ft2_pkgconfig_version)
meson.override_dependency('freetype2', freetype2_dep)
# NOTE: Using both `install_dir` and `subdir` doesn't seem to work below,
# i.e., the subdir value seems to be ignored, contrary to examples in the
# Meson documentation.
install_headers('include/ft2build.h',
install_dir: 'include/freetype2')
install_headers(ft2_public_headers,
install_dir: 'include/freetype2/freetype')
install_headers(ft2_config_headers,
install_dir: 'include/freetype2/freetype/config')
pkgconfig = import('pkgconfig')
pkgconfig.generate(ft2_lib,
filebase: 'freetype2',
name: 'FreeType 2',
description: 'A free, high-quality, and portable font engine.',
url: 'https://freetype.org',
subdirs: 'freetype2',
version: ft2_pkgconfig_version,
)
# NOTE: Unlike the old `make refdoc` command, this generates the
# documentation under `$BUILD/docs/` since Meson doesn't support modifying
# the source root directory (which is a good thing).
gen_docs = custom_target('freetype2 reference documentation',
output: 'docs',
input: ft2_public_headers + ft2_config_headers,
command: [python_exe,
files('builds/meson/generate_reference_docs.py'),
'--version=' + meson.project_version(),
'--input-dir=' + meson.source_root(),
'--output-dir=@OUTPUT@'
],
)
summary({'OS': host_machine.system(),
'Zlib': zlib_dep.found() ? 'yes' : 'no',
'Bzip2': bzip2_dep.found() ? 'yes' : 'no',
'Png': libpng_dep.found() ? 'yes' : 'no',
'Harfbuzz': harfbuzz_dep.found() ? 'yes' : 'no',
'Brotli': brotli_dep.found() ? 'yes' : 'no',
}, section: 'Configuration Options Summary:')
# EOF
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