meson.build

   1 # Copyright © 2017 Intel Corporation
   2
   3 # Permission is hereby granted, free of charge, to any person obtaining a copy
   4 # of this software and associated documentation files (the "Software"), to deal
   5 # in the Software without restriction, including without limitation the rights
   6 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   7 # copies of the Software, and to permit persons to whom the Software is
   8 # furnished to do so, subject to the following conditions:
   9
  10 # The above copyright notice and this permission notice shall be included in
  11 # all copies or substantial portions of the Software.
  12
  13 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  16 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  17 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  18 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  19 # SOFTWARE.
  20
  21 project('mesa', ['c', 'cpp'], version : '17.3.0-devel', license : 'MIT',
  22         default_options : ['c_std=c99', 'cpp_std=c++11'])
  23
  24 # Arguments for the preprocessor, put these in a separate array from the C and
  25 # C++ (cpp in meson terminology) arguments since they need to be added to the
  26 # default arguments for both C and C++.
  27 pre_args = [
  28   '-D__STDC_CONSTANT_MACROS',
  29   '-D__STDC_FORMAT_MACROS',
  30   '-D__STDC_LIMIT_MACROS',
  31   '-DVERSION="@0@"'.format(meson.project_version()),
  32   '-DPACKAGE_VERSION=VERSION',
  33   '-DPACKAGE_BUGREPORT="https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa"',
  34 ]
  35
  36 with_vulkan_icd_dir = get_option('vulkan-icd-dir')
  37 with_tests = get_option('build-tests')
  38 with_valgrind = get_option('valgrind')
  39 with_asm = get_option('asm')
  40
  41 # XXX: yeah, do these
  42 with_appledri = false
  43 with_windowsdri = false
  44
  45 with_gles1 = get_option('gles1')
  46 with_gles2 = get_option('gles2')
  47 with_opengl = get_option('opengl')
  48 with_any_opengl = with_opengl or with_gles1 or with_gles2
  49 # Only build shared_glapi if at least one OpenGL API is enabled
  50 with_shared_glapi = get_option('shared-glapi') and with_any_opengl
  51
  52 # TODO: these will need options, but at the moment they just control header
  53 # installs
  54 with_osmesa = false
  55
  56 # shared-glapi is required if at least two OpenGL APIs are being built
  57 if not with_shared_glapi
  58   if ((with_gles1 and with_gles2) or (with_gles1 and with_opengl)
  59       or (with_gles2 and with_opengl))
  60     error('shared-glapi required for building two or more of OpenGL, OpenGL ES 1.x, OpenGL ES 2.x')
  61   endif
  62 endif
  63
  64 # We require OpenGL for OpenGL ES
  65 if (with_gles1 or with_gles2) and not with_opengl
  66   error('building OpenGL ES without OpenGL is not supported.')
  67 endif
  68
  69 with_dri = false
  70 with_dri_i965 = false
  71 _drivers = get_option('dri-drivers')
  72 if _drivers != ''
  73   _split = _drivers.split(',')
  74   with_dri_i965 = _split.contains('i965')
  75   with_dri = true
  76 endif
  77
  78 if not with_dri
  79   with_gles1 = false
  80   with_gles2 = false
  81   with_opengl = false
  82   with_any_opengl = false
  83   with_shared_glapi = false
  84 endif
  85
  86 # TODO: other OSes
  87 with_dri_platform = 'drm'
  88
  89 with_gallium = false
  90 # TODO: gallium drivers
  91
  92 # TODO: conditionalize libdrm requirement
  93 dep_libdrm = dependency('libdrm', version : '>= 2.4.75')
  94 pre_args += '-DHAVE_LIBDRM'
  95
  96 with_dri2 = with_dri_platform == 'drm' and dep_libdrm.found()
  97 with_dri3 = get_option('dri3')
  98 if with_dri3 == 'auto'
  99   if host_machine.system() == 'linux'
 100     with_dri3 = true
 101   else
 102     with_dri3 = false
 103  endif
 104 elif with_dri3 == 'yes'
 105   with_dri3 = true
 106 else
 107   with_dri3 = false
 108 endif
 109
 110 # TODO: there are more platforms required for non-vulkan drivers
 111 with_platform_wayland = false
 112 with_platform_x11 = false
 113 _platforms = get_option('platforms')
 114 if _platforms != ''
 115   _split = _platforms.split(',')
 116   with_platform_x11 = _split.contains('x11')
 117   with_platform_wayland = _split.contains('wayland')
 118 endif
 119
 120 with_glx = get_option('glx')
 121 if with_glx != 'disabled'
 122   pre_args += '-DGLX_USE_TLS'
 123   if not (with_platform_x11 and with_any_opengl) and with_glx != 'auto'
 124     error('Cannot build GLX support without X11 platform support and at least one OpenGL API')
 125   elif with_glx == 'gallium-xlib'
 126     if not with_gallium
 127       error('Gallium-xlib based GLX requires at least one gallium driver')
 128     elif with_dri
 129       error('gallium-xlib conflicts with any dri driver')
 130     endif
 131   elif with_glx == 'dri' and not with_dri
 132     error('dri based GLX requires at least one DRI driver')
 133   elif with_glx == 'auto'
 134     if with_dri
 135       with_glx = 'dri'
 136     elif with_gallium
 137       with_glx = 'gallium-xlib'
 138     elif with_platform_x11 and with_any_opengl
 139       with_glx = 'xlib'
 140     else
 141       with_glx = 'disabled'
 142     endif
 143   endif
 144 endif
 145
 146 with_glvnd = get_option('glvnd')
 147 if with_glvnd and with_glx != 'dri'
 148   message('glvnd requires dri based glx')
 149 endif
 150
 151 # TODO: toggle for this
 152 with_glx_direct = true
 153
 154 if with_vulkan_icd_dir == ''
 155   with_vulkan_icd_dir = join_paths(get_option('datadir'), 'vulkan/icd.d')
 156 endif
 157
 158 with_intel_vk = false
 159 with_amd_vk = false
 160 with_any_vk = false
 161 _vulkan_drivers = get_option('vulkan-drivers')
 162 if _vulkan_drivers != ''
 163   _split = _vulkan_drivers.split(',')
 164   with_intel_vk = _split.contains('intel')
 165   with_amd_vk = _split.contains('amd')
 166   with_any_vk = with_amd_vk or with_intel_vk
 167   if not (with_platform_x11 or with_platform_wayland)
 168     error('Vulkan requires at least one platform (x11, wayland)')
 169   endif
 170   if with_platform_x11 and not with_dri3
 171     error('Vulkan drivers require dri3 for X11 support')
 172   endif
 173 endif
 174
 175 if with_dri # TODO: or gallium
 176   if with_glx == 'disabled' # TODO: or egl
 177     error('building dri or gallium drivers require at least one window system')
 178   endif
 179 endif
 180
 181 prog_python2 = find_program('python2')
 182 has_mako = run_command(prog_python2, '-c', 'import mako')
 183 if has_mako.returncode() != 0
 184   error('Python (2.x) mako module required to build mesa.')
 185 endif
 186
 187 cc = meson.get_compiler('c')
 188 if cc.get_id() == 'gcc' and cc.version().version_compare('< 4.4.6')
 189   error('When using GCC, version 4.4.6 or later is required.')
 190 endif
 191
 192 # Define DEBUG for debug and debugoptimized builds
 193 if get_option('buildtype').startswith('debug')
 194   pre_args += '-DDEBUG'
 195 endif
 196
 197 if get_option('shader-cache')
 198   pre_args += '-DENABLE_SHADER_CACHE'
 199 elif with_amd_vk
 200   error('Radv requires shader cache support')
 201 endif
 202
 203 # Check for GCC style builtins
 204 foreach b : ['bswap32', 'bswap64', 'clz', 'clzll', 'ctz', 'expect', 'ffs',
 205              'ffsll', 'popcount', 'popcountll', 'unreachable']
 206   if cc.has_function(b)
 207     pre_args += '-DHAVE___BUILTIN_@0@'.format(b.to_upper())
 208   endif
 209 endforeach
 210
 211 # check for GCC __attribute__
 212 foreach a : ['const', 'flatten', 'malloc', 'pure', 'unused',
 213              'warn_unused_result', 'weak',]
 214   if cc.compiles('int foo(void) __attribute__((@0@));'.format(a),
 215                  name : '__attribute__((@0@))'.format(a))
 216     pre_args += '-DHAVE_FUNC_ATTRIBUTE_@0@'.format(a.to_upper())
 217   endif
 218 endforeach
 219 if cc.compiles('int foo(const char *p, ...) __attribute__((format(printf, 1, 2)));',
 220                name : '__attribute__((format(...)))')
 221   pre_args += '-DHAVE_FUNC_ATTRIBUTE_FORMAT'
 222 endif
 223 if cc.compiles('struct __attribute__((packed)) foo { int bar; };',
 224                name : '__attribute__((packed))')
 225   pre_args += '-DHAVE_FUNC_ATTRIBUTE_PACKED'
 226 endif
 227 if cc.compiles('int *foo(void) __attribute__((returns_nonnull));',
 228                name : '__attribute__((returns_nonnull))')
 229   pre_args += '-DHAVE_FUNC_ATTRIBUTE_NONNULL'
 230 endif
 231 if cc.compiles('''int foo_def(void) __attribute__((visibility("default")));
 232                   int foo_hid(void) __attribute__((visibility("hidden")));
 233                   int foo_int(void) __attribute__((visibility("internal")));
 234                   int foo_pro(void) __attribute__((visibility("protected")));''',
 235                name : '__attribute__((visibility(...)))')
 236   pre_args += '-DHAVE_FUNC_ATTRIBUTE_VISBILITY'
 237 endif
 238 if cc.compiles('int foo(void) { return 0; } int bar(void) __attribute__((alias("foo")));',
 239                name : '__attribute__((alias(...)))')
 240   pre_args += '-DHAVE_FUNC_ATTRIBUTE_ALIAS'
 241 endif
 242
 243 # TODO: this is very incomplete
 244 if host_machine.system() == 'linux'
 245   pre_args += '-D_GNU_SOURCE'
 246 endif
 247
 248 # Check for generic C arguments
 249 c_args = []
 250 foreach a : ['-Wall', '-Werror=implicit-function-declaration',
 251              '-Werror=missing-prototypes', '-fno-math-errno',
 252              '-fno-trapping-math', '-Qunused-arguments']
 253   if cc.has_argument(a)
 254     c_args += a
 255   endif
 256 endforeach
 257 c_vis_args = []
 258 if cc.has_argument('-fvisibility=hidden')
 259   c_vis_args += '-fvisibility=hidden'
 260 endif
 261
 262 # Check for generic C++ arguments
 263 cpp = meson.get_compiler('cpp')
 264 cpp_args = []
 265 foreach a : ['-Wall', '-fno-math-errno', '-fno-trapping-math',
 266              '-Qunused-arguments', '-Wno-non-virtual-dtor']
 267   if cpp.has_argument(a)
 268     cpp_args += a
 269   endif
 270 endforeach
 271 cpp_vis_args = []
 272 if cpp.has_argument('-fvisibility=hidden')
 273   cpp_vis_args += '-fvisibility=hidden'
 274 endif
 275
 276 # Check for C and C++ arguments for MSVC2013 compatibility. These are only used
 277 # in parts of the mesa code base that need to compile with old versions of
 278 # MSVC, mainly common code
 279 c_msvc_compat_args = []
 280 cpp_msvc_compat_args = []
 281 foreach a : ['-Werror=pointer-arith', '-Werror=vla']
 282   if cc.has_argument(a)
 283     c_msvc_compat_args += a
 284   endif
 285   if cpp.has_argument(a)
 286     cpp_msvc_compat_args += a
 287   endif
 288 endforeach
 289
 290 no_override_init_args = []
 291 foreach a : ['-Wno-override-init', '-Wno-initializer-overrides']
 292   if cc.has_argument(a)
 293     no_override_init_args += a
 294   endif
 295 endforeach
 296
 297 # TODO: SSE41 (which is only required for core mesa)
 298
 299 # Check for GCC style atomics
 300 if cc.compiles('int main() { int n; return __atomic_load_n(&n, __ATOMIC_ACQUIRE); }',
 301                name : 'GCC atomic builtins')
 302   pre_args += '-DUSE_GCC_ATOMIC_BUILTINS'
 303 endif
 304 if not cc.links('''#include <stdint.h>
 305                    uint64_t v;
 306                    int main() {
 307                      return __sync_add_and_fetch(&v, (uint64_t)1);
 308                    }''',
 309                 name : 'GCC 64bit atomics')
 310   pre_args += '-DMISSING_64_BIT_ATOMICS'
 311 endif
 312
 313 # TODO: endian
 314 # TODO: powr8
 315 # TODO: shared/static? Is this even worth doing?
 316
 317 # I don't think that I need to set any of the debug stuff, I think meson
 318 # handles that for us
 319
 320 # TODO: ldflags
 321
 322 # TODO: texture-float (gallium/mesa only)
 323
 324 # TODO: cross-compiling. I don't think this is relavent to meson
 325
 326 # FIXME: enable asm when cross compiler
 327 # This is doable (autotools does it), but it's not of immediate concern
 328 if meson.is_cross_build()
 329   message('Cross compiling, disabling asm')
 330   with_asm = false
 331 endif
 332
 333 with_asm_arch = ''
 334 if with_asm
 335   # TODO: SPARC and PPC
 336   if host_machine.cpu_family() == 'x86'
 337     if ['linux', 'bsd'].contains(host_machine.system()) # FIXME: hurd?
 338       with_asm_arch = 'x86'
 339       pre_args += ['-DUSE_X86_ASM', '-DUSE_MMX_ASM', '-DUSE_3DNOW_ASM',
 340                    '-DUSE_SSE_ASM']
 341     endif
 342   elif host_machine.cpu_family() == 'x86_64'
 343     if host_machine.system() == 'linux'
 344       with_asm_arch = 'x86_64'
 345       pre_args += ['-DUSE_X86_64_ASM']
 346     endif
 347   elif host_machine.cpu_family() == 'arm'
 348     if host_machine.system() == 'linux'
 349       with_asm_arch = 'arm'
 350       pre_args += ['-DUSE_ARM_ASM']
 351     endif
 352   elif host_machine.cpu_family() == 'aarch64'
 353     if host_machine.system() == 'linux'
 354       with_asm_arch = 'aarch64'
 355       pre_args += ['-DUSE_AARCH64_ASM']
 356     endif
 357   endif
 358 endif
 359
 360 # Check for standard headers and functions
 361 if cc.has_header_symbol('sys/sysmacros.h', 'major')
 362   pre_args += '-DMAJOR_IN_SYSMACROS'
 363 elif cc.has_header_symbol('sys/mkdev.h', 'major')
 364   pre_args += '-DMAJOR_IN_MKDEV'
 365 endif
 366
 367 foreach h : ['xlocale.h', 'sys/sysctl.h']
 368   if cc.has_header(h)
 369     pre_args += '-DHAVE_@0@'.format(h.to_upper().underscorify())
 370   endif
 371 endforeach
 372
 373 foreach f : ['strtof', 'mkostemp', 'posix_memalign']
 374   if cc.has_function(f)
 375     pre_args += '-DHAVE_@0@'.format(f.to_upper())
 376   endif
 377 endforeach
 378
 379 # strtod locale support
 380 if cc.links('''
 381     #define _GNU_SOURCE
 382     #include <stdlib.h>
 383     #include <locale.h>
 384     #ifdef HAVE_XLOCALE_H
 385     #include <xlocale.h>
 386     #endif
 387     int main() {
 388       locale_t loc = newlocale(LC_CTYPE_MASK, "C", NULL);
 389       const char *s = "1.0";
 390       char *end;
 391       double d = strtod_l(s, end, loc);
 392       float f = strtod_l(s, end, loc);
 393       freelocale(loc);
 394       return 0;
 395     }''',
 396     extra_args : pre_args,
 397     name : 'strtod has locale support')
 398   pre_args += '-DHAVE_STRTOD_L'
 399 endif
 400
 401 # Check for some linker flags
 402 ld_args_bsymbolic = []
 403 if cc.links('int main() { return 0; }', args : '-Wl,-Bsymbolic')
 404   ld_args_bsymbolic += '-Wl,-Bsymbolic'
 405 endif
 406 ld_args_gc_sections = []
 407 if cc.links('static char unused() { return 5; } int main() { return 0; }',
 408             args : '-Wl,--gc-sections')
 409   ld_args_gc_sections += '-Wl,--gc-sections'
 410 endif
 411
 412 # check for dl support
 413 if cc.has_function('dlopen')
 414   dep_dl = []
 415 else
 416   dep_dl = cc.find_library('dl')
 417 endif
 418 if cc.has_function('dladdr', dependencies : dep_dl)
 419   # This is really only required for megadrivers
 420   pre_args += '-DHAVE_DLADDR'
 421 endif
 422
 423 if cc.has_function('dl_iterate_phdr')
 424   pre_args += '-DHAVE_DL_ITERATE_PHDR'
 425 else
 426   # TODO: this is required for vulkan
 427 endif
 428
 429 # Determine whether or not the rt library is needed for time functions
 430 if cc.has_function('clock_gettime')
 431   dep_clock = []
 432 else
 433   dep_clock = cc.find_library('rt')
 434 endif
 435
 436 # TODO: some of these may be conditional
 437 dep_zlib = dependency('zlib', version : '>= 1.2.3')
 438 dep_thread = dependency('threads')
 439 pre_args += '-DHAVE_PTHREAD'
 440 dep_elf = dependency('libelf', required : false)
 441 if not dep_elf.found()
 442   dep_elf = cc.find_library('elf', required : with_amd_vk) # TODO: clover, r600, radeonsi
 443 endif
 444 dep_expat = dependency('expat')
 445 # this only exists on linux so either this is linux and it will be found, or
 446 # its not linux and and wont
 447 dep_m = cc.find_library('m', required : false)
 448
 449 dep_libdrm_amdgpu = []
 450 if with_amd_vk
 451   dep_libdrm_amdgpu = dependency('libdrm_amdgpu', version : '>= 2.4.82')
 452 endif
 453
 454 llvm_modules = ['bitwriter', 'engine', 'mcdisassembler', 'mcjit']
 455 if with_amd_vk
 456   llvm_modules += ['amdgpu', 'bitreader', 'ipo']
 457 endif
 458 dep_llvm = dependency(
 459   'llvm', version : '>= 3.9.0', required : false, modules : llvm_modules,
 460 )
 461 if not dep_llvm.found()
 462   if with_amd_vk
 463     error('Radv requires llvm.')
 464   endif
 465 else
 466   _llvm_version = dep_llvm.version().split('.')
 467   # Development versions of LLVM have an 'svn' suffix, we don't want that for
 468   # our version checks.
 469   _llvm_patch = _llvm_version[2]
 470   if _llvm_patch.endswith('svn')
 471     _llvm_patch = _llvm_patch.split('s')[0]
 472   endif
 473   pre_args += [
 474     '-DHAVE_LLVM=0x0@0@@1@@2@'.format(_llvm_version[0], _llvm_version[1], _llvm_patch),
 475     '-DMESA_LLVM_VERSION_PATCH=@0@'.format(_llvm_patch),
 476   ]
 477 endif
 478
 479 dep_glvnd = []
 480 if with_glvnd
 481   dep_glvnd = dependency('libglvnd', version : '>= 0.2.0')
 482   pre_args += '-DUSE_LIBGLVND=1'
 483 endif
 484
 485 # TODO: make this conditional
 486 dep_valgrind = dependency('valgrind', required : false)
 487 if dep_valgrind.found() and with_valgrind
 488   pre_args += '-DHAVE_VALGRIND'
 489 endif
 490
 491 # pthread stubs. Lets not and say we didn't
 492
 493 prog_bison = find_program('bison', required : with_any_opengl)
 494 prog_flex = find_program('flex', required : with_any_opengl)
 495
 496 # TODO: selinux
 497 dep_selinux = []
 498
 499 # TODO: llvm-prefix and llvm-shared-libs
 500
 501 # TODO: unwind (llvm [radeon, gallivm] and gallium)
 502
 503 # TODO: flags for opengl, gles, dri
 504
 505 # TODO: gallium-hud
 506
 507 # TODO: glx provider
 508
 509 # TODO: osmesa provider
 510
 511 # TODO: flags for xa, egl, gbm, nin, xvmc, vdpau, omx, va, opencl,
 512 #       gallium-tests,
 513
 514 # TODO: gallium drivers
 515
 516 # TODO: symbol mangling
 517
 518 # TODO: egl configuration
 519
 520 if with_platform_wayland
 521   prog_wl_scanner = find_program('wayland-scanner')
 522   dep_wl_protocols = dependency('wayland-protocols', version : '>= 1.8')
 523   dep_wayland_client = dependency('wayland-client', version : '>=1.11')
 524   dep_wayland_server = dependency('wayland-server', version : '>=1.11')
 525 else
 526   prog_wl_scanner = []
 527   dep_wl_protocols = []
 528   dep_wayland_client = []
 529   dep_wayland_server = []
 530 endif
 531
 532 dep_xcb_dri2 = []
 533 dep_xcb_dri3 = []
 534 dep_dri2proto = []
 535 dep_glproto = []
 536 dep_x11 = []
 537 dep_xf86vm = []
 538 if with_platform_x11
 539   if with_glx == 'xlib'
 540     # TODO
 541     error('TODO')
 542   elif with_glx == 'gallium-xlib'
 543     # TODO
 544     error('TODO')
 545   else
 546     pre_args += '-DGLX_INDIRECT_RENDERING'
 547     if with_glx_direct
 548       pre_args += '-DGLX_DIRECT_RENDERING'
 549     endif
 550     if with_dri_platform == 'drm'
 551       pre_args += '-DGLX_USE_DRM'
 552       dep_dri2proto = dependency('dri2proto', version : '>= 2.8')
 553       dep_x11 = [
 554         dependency('x11'),
 555         dependency('xext'),
 556         dependency('xdamage', version : '>= 1.1'),
 557         dependency('xfixes'),
 558         dependency('x11-xcb'),
 559         dependency('xcb'),
 560         dependency('xcb-glx', version : '>= 1.8.1'),
 561       ]
 562
 563       dep_xf86vm = dependency('xf86vm', required : false)
 564     endif
 565     # TODO: XF86VIDMODE
 566   endif
 567   if with_glx != 'disabled'
 568     dep_glproto = dependency('glproto', version : '>= 1.4.14')
 569   endif
 570   if with_any_vk or (with_glx == 'dri' and with_dri_platform == 'drm')
 571     dep_xcb_dri2 = [
 572       dependency('x11-xcb'),
 573       dependency('xcb'),
 574       dependency('xcb-dri2', version : '>= 1.8'),
 575       dependency('xcb-xfixes'),
 576     ]
 577     pre_args += '-DHAVE_X11_PLATFORM'
 578     if with_dri3
 579       pre_args += '-DHAVE_DRI3'
 580       dep_xcb_dri3 = [
 581         dep_xcb_dri2,
 582         dependency('xcb-dri3'),
 583         dependency('xcb-present'),
 584         dependency('xcb-sync'),
 585         dependency('xshmfence', version : '>= 1.1'),
 586       ]
 587     endif
 588   endif
 589 endif
 590
 591 # TODO: platforms for !vulkan
 592
 593 # TODO: osmesa
 594
 595 # TODO: egl
 596
 597 # TODO: xa
 598
 599 # TODO: vallium G3DVL
 600
 601 # TODO: nine
 602
 603 # TODO: clover
 604
 605 # TODO: egl sans x11
 606
 607 # TODO: xvmc
 608
 609 # TODO: gallium tests
 610
 611 # TODO: various libdirs
 612
 613 # TODO: swr
 614
 615 # TODO: gallium driver dirs
 616
 617 # FIXME: this is a workaround for #2326
 618 prog_touch = find_program('touch')
 619 dummy_cpp = custom_target(
 620   'dummy_cpp',
 621   output : 'dummy.cpp',
 622   command : [prog_touch, '@OUTPUT@'],
 623 )
 624
 625 foreach a : pre_args
 626   add_project_arguments(a, language : ['c', 'cpp'])
 627 endforeach
 628 foreach a : c_args
 629   add_project_arguments(a, language : ['c'])
 630 endforeach
 631 foreach a : cpp_args
 632   add_project_arguments(a, language : ['cpp'])
 633 endforeach
 634
 635 inc_include = include_directories('include')
 636
 637 pkg = import('pkgconfig')
 638
 639 subdir('include')
 640 subdir('src')