1project('libepoxy', 'c', version: '1.5.4',
2        default_options: [
3          'buildtype=debugoptimized',
4          'c_std=gnu99',
5          'warning_level=1',
6        ],
7        license: 'MIT',
8        meson_version: '>= 0.47.0')
9
10epoxy_version = meson.project_version().split('.')
11epoxy_major_version = epoxy_version[0].to_int()
12epoxy_minor_version = epoxy_version[1].to_int()
13epoxy_micro_version = epoxy_version[2].to_int()
14
15epoxy_prefix = get_option('prefix')
16epoxy_libdir = join_paths(epoxy_prefix, get_option('libdir'))
17epoxy_datadir = join_paths(epoxy_prefix, get_option('datadir'))
18epoxy_includedir = join_paths(epoxy_prefix, get_option('includedir'))
19
20cc = meson.get_compiler('c')
21host_system = host_machine.system()
22
23conf = configuration_data()
24conf.set_quoted('PACKAGE_NAME', meson.project_name())
25conf.set_quoted('PACKAGE_VERSION', meson.project_version())
26conf.set_quoted('PACKAGE_STRING', '@0@-@1@'.format(meson.project_name(), meson.project_version()))
27conf.set_quoted('PACKAGE_DATADIR', join_paths(get_option('prefix'), get_option('datadir')))
28conf.set_quoted('PACKAGE_LIBDIR', join_paths(get_option('prefix'), get_option('libdir')))
29conf.set_quoted('PACKAGE_LOCALEDIR', join_paths(get_option('prefix'), get_option('datadir'), 'locale'))
30conf.set_quoted('PACKAGE_LIBEXECDIR', join_paths(get_option('prefix'), get_option('libexecdir')))
31conf.set('HAVE_KHRPLATFORM_H', cc.has_header('KHR/khrplatform.h'))
32
33# GLX can be used on different platforms, so we expose a
34# configure time switch to enable or disable it; in case
35# the "auto" default value is set, we only enable GLX
36# support on Linux and Unix
37enable_glx = get_option('glx')
38if enable_glx == 'auto'
39  build_glx = not ['windows', 'darwin', 'android', 'haiku'].contains(host_system)
40else
41  build_glx = enable_glx == 'yes'
42endif
43
44enable_egl = get_option('egl')
45if enable_egl == 'auto'
46  build_egl = not ['windows', 'darwin'].contains(host_system)
47else
48  build_egl = enable_egl == 'yes'
49endif
50
51enable_x11 = get_option('x11')
52if not enable_x11
53  if enable_glx == 'yes'
54    error('GLX support is explicitly enabled, but X11 was disabled')
55  endif
56  build_glx = false
57endif
58
59# The remaining platform specific API for GL/GLES are enabled
60# depending on the platform we're building for
61if host_system == 'windows'
62  build_wgl = true
63  has_znow = true
64elif host_system == 'darwin'
65  build_wgl = false
66  has_znow = false
67else
68  build_wgl = false
69  has_znow = true
70endif
71
72conf.set10('ENABLE_GLX', build_glx)
73conf.set10('ENABLE_EGL', build_egl)
74conf.set10('ENABLE_X11', enable_x11)
75
76# Compiler flags, taken from the Xorg macros
77if cc.get_id() == 'msvc'
78  # Compiler options taken from msvc_recommended_pragmas.h
79  # in GLib, based on _Win32_Programming_ by Rector and Newcomer
80  test_cflags = [
81    '-we4002', # too many actual parameters for macro
82    '-we4003', # not enough actual parameters for macro
83    '-w14010', # single-line comment contains line-continuation character
84    '-we4013', # 'function' undefined; assuming extern returning int
85    '-w14016', # no function return type; using int as default
86    '-we4020', # too many actual parameters
87    '-we4021', # too few actual parameters
88    '-we4027', # function declared without formal parameter list
89    '-we4029', # declared formal parameter list different from definition
90    '-we4033', # 'function' must return a value
91    '-we4035', # 'function' : no return value
92    '-we4045', # array bounds overflow
93    '-we4047', # different levels of indirection
94    '-we4049', # terminating line number emission
95    '-we4053', # an expression of type void was used as an operand
96    '-we4071', # no function prototype given
97    '-we4819', # the file contains a character that cannot be represented in the current code page
98  ]
99elif cc.get_id() == 'gcc' or cc.get_id() == 'clang'
100  test_cflags = [
101    '-Wpointer-arith',
102    '-Wmissing-declarations',
103    '-Wformat=2',
104    '-Wstrict-prototypes',
105    '-Wmissing-prototypes',
106    '-Wnested-externs',
107    '-Wbad-function-cast',
108    '-Wold-style-definition',
109    '-Wdeclaration-after-statement',
110    '-Wunused',
111    '-Wuninitialized',
112    '-Wshadow',
113    '-Wmissing-noreturn',
114    '-Wmissing-format-attribute',
115    '-Wredundant-decls',
116    '-Wlogical-op',
117    '-Werror=implicit',
118    '-Werror=nonnull',
119    '-Werror=init-self',
120    '-Werror=main',
121    '-Werror=missing-braces',
122    '-Werror=sequence-point',
123    '-Werror=return-type',
124    '-Werror=trigraphs',
125    '-Werror=array-bounds',
126    '-Werror=write-strings',
127    '-Werror=address',
128    '-Werror=int-to-pointer-cast',
129    '-Werror=pointer-to-int-cast',
130    '-fno-strict-aliasing',
131    '-Wno-int-conversion',
132  ]
133else
134  test_cflags = []
135endif
136
137common_cflags = cc.get_supported_arguments(test_cflags)
138
139libtype = get_option('default_library')
140
141# Visibility compiler flags; we only use this for shared libraries
142visibility_cflags = []
143if libtype == 'shared'
144  if host_system == 'windows'
145    conf.set('DLL_EXPORT', true)
146    conf.set('EPOXY_PUBLIC', '__declspec(dllexport) extern')
147    if cc.get_id() != 'msvc'
148      visibility_cflags += [ '-fvisibility=hidden' ]
149    endif
150  else
151    conf.set('EPOXY_PUBLIC', '__attribute__((visibility("default"))) extern')
152    visibility_cflags += [ '-fvisibility=hidden' ]
153  endif
154endif
155
156# The inline keyword is available only for C++ in MSVC.
157# So we need to use Microsoft specific __inline.
158if host_system == 'windows'
159  if cc.get_id() == 'msvc'
160    conf.set('inline', '__inline')
161  endif
162endif
163
164# Dependencies
165dl_dep = cc.find_library('dl', required: false)
166gl_dep = dependency('gl', required: false)
167egl_dep = dependency('egl', required: false)
168
169# Optional dependencies for tests
170x11_dep = dependency('x11', required: false)
171
172# GLES v2 and v1 may have pkg-config files, courtesy of downstream
173# packagers; let's check those first, and fall back to find_library()
174# if we fail
175gles2_dep = dependency('glesv2', required: false)
176if not gles2_dep.found()
177  gles2_dep = cc.find_library('libGLESv2', required: false)
178endif
179
180gles1_dep = dependency('glesv1_cm', required: false)
181if not gles1_dep.found()
182  gles1_dep = cc.find_library('libGLESv1_CM', required: false)
183endif
184
185# On windows, the DLL has to have all of its functions
186# resolved at link time, so we have to link directly against
187# opengl32.  But that's the only GL provider, anyway.
188if host_system == 'windows'
189  opengl32_dep = cc.find_library('opengl32', required: true)
190
191  # When building against static libraries, we need to control
192  # the order of the dependencies, and gdi32 provides symbols
193  # needed when using opengl32, like SetPixelFormat and
194  # ChoosePixelFormat. This is mostly a workaround for older
195  # versions of Meson.
196  gdi32_dep = cc.find_library('gdi32', required: true)
197endif
198
199# Python
200python = import('python3').find_python()
201if not python.found()
202  python = find_program('python', required: true)
203endif
204
205# Generates the dispatch tables
206gen_dispatch_py = files('src/gen_dispatch.py')
207
208gl_registry = files('registry/gl.xml')
209egl_registry = files('registry/egl.xml')
210glx_registry = files('registry/glx.xml')
211wgl_registry = files('registry/wgl.xml')
212
213libepoxy_inc = [
214  include_directories('include'),
215  include_directories('src'),
216]
217
218subdir('include/epoxy')
219subdir('src')
220
221if get_option('tests')
222  subdir('test')
223endif
224
225if get_option('docs')
226  doxygen = find_program('doxygen', required: false)
227  if doxygen.found()
228    subdir('doc')
229  else
230    message('Documentation disabled without doxygen')
231  endif
232endif
233