1 # Copyright © 2017-2018 Intel Corporation
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:
10 # The above copyright notice and this permission notice shall be included in
11 # all copies or substantial portions of the Software.
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
24 version : run_command(
25 [find_program('python', 'python2', 'python3'), 'bin/meson_get_version.py']
28 meson_version : '>= 0.45',
29 default_options : ['buildtype=debugoptimized', 'b_ndebug=if-release', 'c_std=c99', 'cpp_std=c++11']
32 cc = meson.get_compiler('c')
33 cpp = meson.get_compiler('cpp')
35 null_dep = dependency('', required : false)
37 system_has_kms_drm = ['openbsd', 'netbsd', 'freebsd', 'dragonfly', 'linux'].contains(host_machine.system())
39 # Arguments for the preprocessor, put these in a separate array from the C and
40 # C++ (cpp in meson terminology) arguments since they need to be added to the
41 # default arguments for both C and C++.
43 '-D__STDC_CONSTANT_MACROS',
44 '-D__STDC_FORMAT_MACROS',
45 '-D__STDC_LIMIT_MACROS',
46 '-DPACKAGE_VERSION="@0@"'.format(meson.project_version()),
47 '-DPACKAGE_BUGREPORT="https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa"',
50 with_vulkan_icd_dir = get_option('vulkan-icd-dir')
51 with_tests = get_option('build-tests')
52 with_valgrind = get_option('valgrind')
53 with_libunwind = get_option('libunwind')
54 with_asm = get_option('asm')
55 with_glx_read_only_text = get_option('glx-read-only-text')
56 with_osmesa = get_option('osmesa')
57 with_swr_arches = get_option('swr-arches')
58 with_tools = get_option('tools')
59 if with_tools.contains('all')
60 with_tools = ['freedreno', 'glsl', 'intel', 'nir', 'nouveau', 'xvmc']
63 dri_drivers_path = get_option('dri-drivers-path')
64 if dri_drivers_path == ''
65 dri_drivers_path = join_paths(get_option('libdir'), 'dri')
67 dri_search_path = get_option('dri-search-path')
68 if dri_search_path == ''
69 dri_search_path = join_paths(get_option('prefix'), dri_drivers_path)
72 with_gles1 = get_option('gles1')
73 with_gles2 = get_option('gles2')
74 with_opengl = get_option('opengl')
75 with_any_opengl = with_opengl or with_gles1 or with_gles2
76 # Only build shared_glapi if at least one OpenGL API is enabled
77 with_shared_glapi = get_option('shared-glapi') and with_any_opengl
80 # shared-glapi is required if at least two OpenGL APIs are being built
81 if not with_shared_glapi
82 if ((with_gles1 and with_gles2) or (with_gles1 and with_opengl)
83 or (with_gles2 and with_opengl))
84 error('shared-glapi required for building two or more of OpenGL, OpenGL ES 1.x, OpenGL ES 2.x')
88 # We require OpenGL for OpenGL ES
89 if (with_gles1 or with_gles2) and not with_opengl
90 error('building OpenGL ES without OpenGL is not supported.')
93 system_has_kms_drm = ['openbsd', 'netbsd', 'freebsd', 'dragonfly', 'linux'].contains(host_machine.system())
95 _drivers = get_option('dri-drivers')
96 if _drivers.contains('auto')
99 if ['x86', 'x86_64'].contains(host_machine.cpu_family())
100 _drivers = ['i915', 'i965', 'r100', 'r200', 'nouveau']
101 elif ['arm', 'aarch64'].contains(host_machine.cpu_family())
104 error('Unknown architecture @0@. Please pass -Ddri-drivers to set driver options. Patches gladly accepted to fix this.'.format(
105 host_machine.cpu_family()))
107 elif ['darwin', 'windows', 'cygwin', 'haiku'].contains(host_machine.system())
108 # only swrast would make sense here, but gallium swrast is a much better default
111 error('Unknown OS @0@. Please pass -Ddri-drivers to set driver options. Patches gladly accepted to fix this.'.format(
112 host_machine.system()))
116 with_dri_i915 = _drivers.contains('i915')
117 with_dri_i965 = _drivers.contains('i965')
118 with_dri_r100 = _drivers.contains('r100')
119 with_dri_r200 = _drivers.contains('r200')
120 with_dri_nouveau = _drivers.contains('nouveau')
121 with_dri_swrast = _drivers.contains('swrast')
123 with_dri = _drivers.length() != 0 and _drivers != ['']
125 _drivers = get_option('gallium-drivers')
126 if _drivers.contains('auto')
127 if system_has_kms_drm
129 if ['x86', 'x86_64'].contains(host_machine.cpu_family())
131 'r300', 'r600', 'radeonsi', 'nouveau', 'virgl', 'svga', 'swrast'
133 elif ['arm', 'aarch64'].contains(host_machine.cpu_family())
135 'pl111', 'v3d', 'vc4', 'freedreno', 'etnaviv', 'imx', 'nouveau',
136 'tegra', 'virgl', 'swrast',
139 error('Unknown architecture @0@. Please pass -Dgallium-drivers to set driver options. Patches gladly accepted to fix this.'.format(
140 host_machine.cpu_family()))
142 elif ['darwin', 'windows', 'cygwin', 'haiku'].contains(host_machine.system())
143 _drivers = ['swrast']
145 error('Unknown OS @0@. Please pass -Dgallium-drivers to set driver options. Patches gladly accepted to fix this.'.format(
146 host_machine.system()))
149 with_gallium_pl111 = _drivers.contains('pl111')
150 with_gallium_radeonsi = _drivers.contains('radeonsi')
151 with_gallium_r300 = _drivers.contains('r300')
152 with_gallium_r600 = _drivers.contains('r600')
153 with_gallium_nouveau = _drivers.contains('nouveau')
154 with_gallium_freedreno = _drivers.contains('freedreno')
155 with_gallium_softpipe = _drivers.contains('swrast')
156 with_gallium_vc4 = _drivers.contains('vc4')
157 with_gallium_v3d = _drivers.contains('v3d')
158 with_gallium_etnaviv = _drivers.contains('etnaviv')
159 with_gallium_imx = _drivers.contains('imx')
160 with_gallium_tegra = _drivers.contains('tegra')
161 with_gallium_i915 = _drivers.contains('i915')
162 with_gallium_svga = _drivers.contains('svga')
163 with_gallium_virgl = _drivers.contains('virgl')
164 with_gallium_swr = _drivers.contains('swr')
166 with_gallium = _drivers.length() != 0 and _drivers != ['']
168 if with_gallium and system_has_kms_drm
169 _glx = get_option('glx')
170 _egl = get_option('egl')
171 if _glx == 'dri' or _egl == 'true' or (_glx == 'disabled' and _egl != 'false')
176 _vulkan_drivers = get_option('vulkan-drivers')
177 if _vulkan_drivers.contains('auto')
178 if system_has_kms_drm
179 if host_machine.cpu_family().startswith('x86')
180 _vulkan_drivers = ['amd', 'intel']
181 elif ['arm', 'aarch64'].contains(host_machine.cpu_family())
184 error('Unknown architecture @0@. Please pass -Dvulkan-drivers to set driver options. Patches gladly accepted to fix this.'.format(
185 host_machine.cpu_family()))
187 elif ['darwin', 'windows', 'cygwin', 'haiku'].contains(host_machine.system())
188 # No vulkan driver supports windows or macOS currently
191 error('Unknown OS @0@. Please pass -Dvulkan-drivers to set driver options. Patches gladly accepted to fix this.'.format(
192 host_machine.system()))
196 with_intel_vk = _vulkan_drivers.contains('intel')
197 with_amd_vk = _vulkan_drivers.contains('amd')
198 with_any_vk = _vulkan_drivers.length() != 0 and _vulkan_drivers != ['']
200 if with_dri_swrast and (with_gallium_softpipe or with_gallium_swr)
201 error('Only one swrast provider can be built')
203 if with_dri_i915 and with_gallium_i915
204 error('Only one i915 provider can be built')
206 if with_gallium_imx and not with_gallium_etnaviv
207 error('IMX driver requires etnaviv driver')
209 if with_gallium_pl111 and not with_gallium_vc4
210 error('pl111 driver requires vc4 driver')
212 if with_gallium_tegra and not with_gallium_nouveau
213 error('tegra driver requires nouveau driver')
216 if host_machine.system() == 'darwin'
217 with_dri_platform = 'apple'
218 elif ['windows', 'cygwin'].contains(host_machine.system())
219 with_dri_platform = 'windows'
220 elif system_has_kms_drm
221 with_dri_platform = 'drm'
223 # FIXME: haiku doesn't use dri, and xlib doesn't use dri, probably should
224 # assert here that one of those cases has been met.
225 # FIXME: GNU (hurd) ends up here as well, but meson doesn't officially
226 # support Hurd at time of writing (2017/11)
227 # FIXME: illumos ends up here as well
228 with_dri_platform = 'none'
231 _platforms = get_option('platforms')
232 if _platforms.contains('auto')
233 if system_has_kms_drm
234 _platforms = ['x11', 'wayland', 'drm', 'surfaceless']
235 elif ['darwin', 'windows', 'cygwin'].contains(host_machine.system())
236 _platforms = ['x11', 'surfaceless']
237 elif ['haiku'].contains(host_machine.system())
238 _platforms = ['haiku']
240 error('Unknown OS @0@. Please pass -Dplatforms to set platforms. Patches gladly accepted to fix this.'.format(
241 host_machine.system()))
245 with_platform_android = _platforms.contains('android')
246 with_platform_x11 = _platforms.contains('x11')
247 with_platform_wayland = _platforms.contains('wayland')
248 with_platform_drm = _platforms.contains('drm')
249 with_platform_haiku = _platforms.contains('haiku')
250 with_platform_surfaceless = _platforms.contains('surfaceless')
252 with_platforms = false
253 if _platforms.length() != 0 and _platforms != ['']
254 with_platforms = true
255 egl_native_platform = _platforms[0]
258 _xlib_lease = get_option('xlib-lease')
259 if _xlib_lease == 'auto'
260 with_xlib_lease = with_platform_x11 and with_platform_drm
262 with_xlib_lease = _xlib_lease == 'true'
265 with_glx = get_option('glx')
266 if with_glx == 'auto'
269 elif with_platform_haiku
270 with_glx = 'disabled'
272 # Even when building just gallium drivers the user probably wants dri
274 elif with_platform_x11 and with_any_opengl and not with_any_vk
275 # The automatic behavior should not be to turn on xlib based glx when
276 # building only vulkan drivers
279 with_glx = 'disabled'
288 if not (with_dri or with_gallium or with_glx == 'xlib' or with_glx == 'gallium-xlib')
292 with_any_opengl = false
293 with_shared_glapi = false
296 _gbm = get_option('gbm')
298 with_gbm = system_has_kms_drm and with_dri
300 with_gbm = _gbm == 'true'
302 if with_gbm and not system_has_kms_drm
303 error('GBM only supports DRM/KMS platforms')
306 _egl = get_option('egl')
309 not ['darwin', 'windows'].contains(host_machine.system()) and
310 with_dri and with_shared_glapi and with_platforms
314 error('EGL requires dri')
315 elif not with_shared_glapi
316 error('EGL requires shared-glapi')
317 elif not with_platforms
318 error('No platforms specified, consider -Dplatforms=drm,x11,surfaceless at least')
319 elif not ['disabled', 'dri'].contains(with_glx)
320 error('EGL requires dri, but a GLX is being built without dri')
321 elif ['darwin', 'windows'].contains(host_machine.system())
322 error('EGL is not available on Windows or MacOS')
329 if with_egl and not (with_platform_drm or with_platform_surfaceless)
330 if with_gallium_radeonsi
331 error('RadeonSI requires drm or surfaceless platform when using EGL')
333 if with_gallium_virgl
334 error('Virgl requires drm or surfaceless platform when using EGL')
338 pre_args += '-DGLX_USE_TLS'
339 if with_glx != 'disabled'
340 if not (with_platform_x11 and with_any_opengl)
341 error('Cannot build GLX support without X11 platform support and at least one OpenGL API')
342 elif with_glx == 'gallium-xlib'
344 error('Gallium-xlib based GLX requires at least one gallium driver')
345 elif not with_gallium_softpipe
346 error('Gallium-xlib based GLX requires softpipe or llvmpipe.')
348 error('gallium-xlib conflicts with any dri driver')
350 elif with_glx == 'xlib'
352 error('xlib conflicts with any dri driver')
354 elif with_glx == 'dri'
356 error('dri based GLX requires at least one DRI driver')
357 elif not with_shared_glapi
358 error('dri based GLX requires shared-glapi')
363 with_glvnd = get_option('glvnd')
365 if with_glx == 'xlib' or with_glx == 'gallium-xlib'
366 error('Cannot build glvnd support for GLX that is not DRI based.')
367 elif with_glx == 'disabled' and not with_egl
368 error('glvnd requires DRI based GLX and/or EGL')
372 # TODO: toggle for this
373 with_glx_direct = true
375 if with_vulkan_icd_dir == ''
376 with_vulkan_icd_dir = join_paths(get_option('datadir'), 'vulkan/icd.d')
379 with_dri2 = (with_dri or with_any_vk) and with_dri_platform == 'drm'
380 _dri3 = get_option('dri3')
382 with_dri3 = system_has_kms_drm and with_dri2
384 with_dri3 = _dri3 == 'true'
387 if with_any_vk and (with_platform_x11 and not with_dri3)
388 error('Vulkan drivers require dri3 for X11 support')
390 if with_dri or with_gallium
391 if with_glx == 'disabled' and not with_egl and not with_platform_haiku
392 error('building dri or gallium drivers require at least one window system')
396 prog_pkgconfig = find_program('pkg-config')
398 _vdpau = get_option('gallium-vdpau')
399 if not system_has_kms_drm
401 error('VDPAU state tracker can only be build on unix-like OSes.')
405 elif not with_platform_x11
407 error('VDPAU state tracker requires X11 support.')
411 elif not (with_gallium_r300 or with_gallium_r600 or with_gallium_radeonsi or
412 with_gallium_nouveau)
414 error('VDPAU state tracker requires at least one of the following gallium drivers: r300, r600, radeonsi, nouveau.')
420 with_gallium_vdpau = false
422 dep_vdpau = dependency('vdpau', version : '>= 1.1', required : _vdpau == 'true')
424 dep_vdpau = declare_dependency(
425 compile_args : run_command(prog_pkgconfig, ['vdpau', '--cflags']).stdout().split()
427 with_gallium_vdpau = true
431 if with_gallium_vdpau
432 pre_args += '-DHAVE_ST_VDPAU'
434 vdpau_drivers_path = get_option('vdpau-libs-path')
435 if vdpau_drivers_path == ''
436 vdpau_drivers_path = join_paths(get_option('libdir'), 'vdpau')
439 _xvmc = get_option('gallium-xvmc')
440 if not system_has_kms_drm
442 error('XVMC state tracker can only be build on unix-like OSes.')
446 elif not with_platform_x11
448 error('XVMC state tracker requires X11 support.')
452 elif not (with_gallium_r600 or with_gallium_nouveau)
454 error('XVMC state tracker requires at least one of the following gallium drivers: r600, nouveau.')
460 with_gallium_xvmc = false
462 dep_xvmc = dependency('xvmc', version : '>= 1.0.6', required : _xvmc == 'true')
463 with_gallium_xvmc = dep_xvmc.found()
466 xvmc_drivers_path = get_option('xvmc-libs-path')
467 if xvmc_drivers_path == ''
468 xvmc_drivers_path = get_option('libdir')
471 _omx = get_option('gallium-omx')
472 if not system_has_kms_drm
473 if ['auto', 'disabled'].contains(_omx)
476 error('OMX state tracker can only be built on unix-like OSes.')
478 elif not (with_platform_x11 or with_platform_drm)
479 if ['auto', 'disabled'].contains(_omx)
482 error('OMX state tracker requires X11 or drm platform support.')
484 elif not (with_gallium_r600 or with_gallium_radeonsi or with_gallium_nouveau)
485 if ['auto', 'disabled'].contains(_omx)
488 error('OMX state tracker requires at least one of the following gallium drivers: r600, radeonsi, nouveau.')
491 with_gallium_omx = _omx
494 if ['auto', 'bellagio'].contains(_omx)
495 dep_omx = dependency(
496 'libomxil-bellagio', required : _omx == 'bellagio'
499 with_gallium_omx = 'bellagio'
502 if ['auto', 'tizonia'].contains(_omx)
503 if with_dri and with_egl
504 dep_omx = dependency(
505 'libtizonia', version : '>= 0.10.0',
506 required : _omx == 'tizonia',
509 dependency('libtizplatform', required : _omx == 'tizonia'),
510 dependency('tizilheaders', required : _omx == 'tizonia'),
512 if dep_omx.found() and dep_omx_other[0].found() and dep_omx_other[1].found()
513 with_gallium_omx = 'tizonia'
515 elif _omx == 'tizonia'
516 error('OMX-Tizonia state tracker requires dri and egl')
520 with_gallium_omx = 'disabled'
522 with_gallium_omx = _omx
526 '-DENABLE_ST_OMX_BELLAGIO=' + (with_gallium_omx == 'bellagio' ? '1' : '0'),
527 '-DENABLE_ST_OMX_TIZONIA=' + (with_gallium_omx == 'tizonia' ? '1' : '0'),
531 omx_drivers_path = get_option('omx-libs-path')
533 if with_gallium_omx != 'disabled'
534 # Figure out where to put the omx driver.
535 # FIXME: this could all be vastly simplified by adding a 'defined_variable'
536 # argument to meson's get_pkgconfig_variable method.
537 if omx_drivers_path == ''
538 _omx_libdir = dep_omx.get_pkgconfig_variable('libdir')
539 _omx_drivers_dir = dep_omx.get_pkgconfig_variable('pluginsdir')
540 if _omx_libdir == get_option('libdir')
541 omx_drivers_path = _omx_drivers_dir
544 # This will fail on windows. Does OMX run on windows?
545 _omx_libdir = _omx_libdir.split('/')
546 _omx_drivers_dir = _omx_drivers_dir.split('/')
547 foreach o : _omx_drivers_dir
548 if not _omx_libdir.contains(o)
552 omx_drivers_path = join_paths(get_option('libdir'), _omx_base_dir)
557 _va = get_option('gallium-va')
558 if not system_has_kms_drm
560 error('VA state tracker can only be built on unix-like OSes.')
564 elif not (with_platform_x11 or with_platform_drm)
566 error('VA state tracker requires X11 or drm or wayland platform support.')
570 elif not (with_gallium_r600 or with_gallium_radeonsi or with_gallium_nouveau)
572 error('VA state tracker requires at least one of the following gallium drivers: r600, radeonsi, nouveau.')
577 with_gallium_va = false
580 dep_va = dependency('libva', version : '>= 0.38.0', required : _va == 'true')
582 dep_va_headers = declare_dependency(
583 compile_args : run_command(prog_pkgconfig, ['libva', '--cflags']).stdout().split()
585 with_gallium_va = true
589 va_drivers_path = get_option('va-libs-path')
590 if va_drivers_path == ''
591 va_drivers_path = join_paths(get_option('libdir'), 'dri')
594 _xa = get_option('gallium-xa')
595 if not system_has_kms_drm
597 error('XA state tracker can only be built on unix-like OSes.')
601 elif not (with_gallium_nouveau or with_gallium_freedreno or with_gallium_i915
602 or with_gallium_svga)
604 error('XA state tracker requires at least one of the following gallium drivers: nouveau, freedreno, i915, svga.')
609 with_gallium_xa = _xa != 'false'
611 d3d_drivers_path = get_option('d3d-drivers-path')
612 if d3d_drivers_path == ''
613 d3d_drivers_path = join_paths(get_option('libdir'), 'd3d')
616 with_gallium_st_nine = get_option('gallium-nine')
617 if with_gallium_st_nine
618 if not with_gallium_softpipe
619 error('The nine state tracker requires gallium softpipe/llvmpipe.')
620 elif not (with_gallium_radeonsi or with_gallium_nouveau or with_gallium_r600
621 or with_gallium_r300 or with_gallium_svga or with_gallium_i915)
622 error('The nine state tracker requires at least on non-swrast gallium driver.')
625 error('Using nine with wine requires dri3')
629 if get_option('power8') != 'false'
630 if host_machine.cpu_family() == 'ppc64le'
631 if cc.get_id() == 'gcc' and cc.version().version_compare('< 4.8')
632 error('Altivec is not supported with gcc version < 4.8.')
637 vector unsigned char r;
638 vector unsigned int v = vec_splat_u32 (1);
639 r = __builtin_vec_vgbbd ((vector unsigned char) v);
642 args : '-mpower8-vector',
643 name : 'POWER8 intrinsics')
644 pre_args += ['-D_ARCH_PWR8', '-mpower8-vector']
645 elif get_option('power8') == 'true'
646 error('POWER8 intrinsic support required but not found.')
651 _opencl = get_option('gallium-opencl')
652 if _opencl != 'disabled'
654 error('OpenCL Clover implementation requires at least one gallium driver.')
657 dep_clc = dependency('libclc')
658 with_gallium_opencl = true
659 with_opencl_icd = _opencl == 'icd'
662 with_gallium_opencl = false
663 with_gallium_icd = false
666 gl_pkgconfig_c_flags = []
668 if with_any_vk or with_egl or (with_glx == 'dri' and with_dri_platform == 'drm')
669 pre_args += '-DHAVE_X11_PLATFORM'
671 if with_glx == 'xlib' or with_glx == 'gallium-xlib'
672 pre_args += '-DUSE_XSHM'
674 pre_args += '-DGLX_INDIRECT_RENDERING'
676 pre_args += '-DGLX_DIRECT_RENDERING'
678 if with_dri_platform == 'drm'
679 pre_args += '-DGLX_USE_DRM'
680 elif with_dri_platform == 'apple'
681 pre_args += '-DGLX_USE_APPLEGL'
682 elif with_dri_platform == 'windows'
683 pre_args += '-DGLX_USE_WINDOWSGL'
687 pre_args += '-DMESA_EGL_NO_X11_HEADERS'
688 gl_pkgconfig_c_flags += '-DMESA_EGL_NO_X11_HEADERS'
691 if with_egl and not with_gbm
692 error('EGL drm platform requires gbm')
694 pre_args += '-DHAVE_DRM_PLATFORM'
696 if with_platform_surfaceless
697 pre_args += '-DHAVE_SURFACELESS_PLATFORM'
699 if with_platform_android
701 dependency('cutils'),
702 dependency('hardware'),
705 pre_args += '-DHAVE_ANDROID_PLATFORM'
707 if with_platform_haiku
708 pre_args += '-DHAVE_HAIKU_PLATFORM'
711 prog_python = import('python3').find_python()
712 has_mako = run_command(
715 from distutils.version import StrictVersion
717 assert StrictVersion(mako.__version__) > StrictVersion("0.8.0")
719 if has_mako.returncode() != 0
720 error('Python (3.x) mako module >= 0.8.0 required to build mesa.')
723 if cc.get_id() == 'gcc' and cc.version().version_compare('< 4.4.6')
724 error('When using GCC, version 4.4.6 or later is required.')
727 # Define DEBUG for debug builds only (debugoptimized is not included on this one)
728 if get_option('buildtype') == 'debug'
729 pre_args += '-DDEBUG'
732 if get_option('shader-cache')
733 pre_args += '-DENABLE_SHADER_CACHE'
735 error('Radv requires shader cache support')
738 # Check for GCC style builtins
739 foreach b : ['bswap32', 'bswap64', 'clz', 'clzll', 'ctz', 'expect', 'ffs',
740 'ffsll', 'popcount', 'popcountll', 'unreachable']
741 if cc.has_function(b)
742 pre_args += '-DHAVE___BUILTIN_@0@'.format(b.to_upper())
746 # check for GCC __attribute__
747 foreach a : ['const', 'flatten', 'malloc', 'pure', 'unused',
748 'warn_unused_result', 'weak',]
749 if cc.compiles('int foo(void) __attribute__((@0@));'.format(a),
750 name : '__attribute__((@0@))'.format(a))
751 pre_args += '-DHAVE_FUNC_ATTRIBUTE_@0@'.format(a.to_upper())
754 if cc.compiles('int foo(const char *p, ...) __attribute__((format(printf, 1, 2)));',
755 name : '__attribute__((format(...)))')
756 pre_args += '-DHAVE_FUNC_ATTRIBUTE_FORMAT'
758 if cc.compiles('struct __attribute__((packed)) foo { int bar; };',
759 name : '__attribute__((packed))')
760 pre_args += '-DHAVE_FUNC_ATTRIBUTE_PACKED'
762 if cc.compiles('int *foo(void) __attribute__((returns_nonnull));',
763 name : '__attribute__((returns_nonnull))')
764 pre_args += '-DHAVE_FUNC_ATTRIBUTE_RETURNS_NONNULL'
766 if cc.compiles('''int foo_def(void) __attribute__((visibility("default")));
767 int foo_hid(void) __attribute__((visibility("hidden")));
768 int foo_int(void) __attribute__((visibility("internal")));
769 int foo_pro(void) __attribute__((visibility("protected")));''',
770 name : '__attribute__((visibility(...)))')
771 pre_args += '-DHAVE_FUNC_ATTRIBUTE_VISIBILITY'
773 if cc.compiles('int foo(void) { return 0; } int bar(void) __attribute__((alias("foo")));',
774 name : '__attribute__((alias(...)))')
775 pre_args += '-DHAVE_FUNC_ATTRIBUTE_ALIAS'
777 if cc.compiles('int foo(void) __attribute__((__noreturn__));',
778 name : '__attribute__((__noreturn__))')
779 pre_args += '-DHAVE_FUNC_ATTRIBUTE_NORETURN'
782 # TODO: this is very incomplete
783 if ['linux', 'cygwin'].contains(host_machine.system())
784 pre_args += '-D_GNU_SOURCE'
787 # Check for generic C arguments
789 foreach a : ['-Werror=implicit-function-declaration',
790 '-Werror=missing-prototypes', '-Werror=return-type',
792 '-fno-trapping-math', '-Qunused-arguments']
793 if cc.has_argument(a)
798 foreach a : ['missing-field-initializers', 'format-truncation']
799 if cc.has_argument('-W' + a)
800 c_args += '-Wno-' + a
805 if cc.has_argument('-fvisibility=hidden')
806 c_vis_args += '-fvisibility=hidden'
809 # Check for generic C++ arguments
811 foreach a : ['-Werror=return-type',
812 '-fno-math-errno', '-fno-trapping-math',
813 '-Qunused-arguments']
814 if cpp.has_argument(a)
819 # For some reason, the test for -Wno-foo always succeeds with gcc, even if the
820 # option is not supported. Hence, check for -Wfoo instead.
822 foreach a : ['non-virtual-dtor', 'missing-field-initializers', 'format-truncation']
823 if cpp.has_argument('-W' + a)
824 cpp_args += '-Wno-' + a
828 no_override_init_args = []
829 foreach a : ['override-init', 'initializer-overrides']
830 if cc.has_argument('-W' + a)
831 no_override_init_args += '-Wno-' + a
836 if cpp.has_argument('-fvisibility=hidden')
837 cpp_vis_args += '-fvisibility=hidden'
840 # Check for C and C++ arguments for MSVC2013 compatibility. These are only used
841 # in parts of the mesa code base that need to compile with old versions of
842 # MSVC, mainly common code
843 c_msvc_compat_args = []
844 cpp_msvc_compat_args = []
845 foreach a : ['-Werror=pointer-arith', '-Werror=vla']
846 if cc.has_argument(a)
847 c_msvc_compat_args += a
849 if cpp.has_argument(a)
850 cpp_msvc_compat_args += a
854 if host_machine.cpu_family().startswith('x86')
855 pre_args += '-DUSE_SSE41'
857 sse41_args = ['-msse4.1']
859 # GCC on x86 (not x86_64) with -msse* assumes a 16 byte aligned stack, but
860 # that's not guaranteed
861 if host_machine.cpu_family() == 'x86'
862 sse41_args += '-mstackrealign'
869 # Check for GCC style atomics
870 dep_atomic = null_dep
872 if cc.compiles('''#include <stdint.h>
877 return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE) &
878 (int)__atomic_add_fetch(x.v, (uint64_t)1, __ATOMIC_ACQ_REL);
881 name : 'GCC atomic builtins')
882 pre_args += '-DUSE_GCC_ATOMIC_BUILTINS'
884 # Not all atomic calls can be turned into lock-free instructions, in which
885 # GCC will make calls into the libatomic library. Check whether we need to
886 # link with -latomic.
888 # This can happen for 64-bit atomic operations on 32-bit architectures such
890 if not cc.links('''#include <stdint.h>
895 return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE) &
896 (int)__atomic_add_fetch(x.v, (uint64_t)1, __ATOMIC_ACQ_REL);
898 name : 'GCC atomic builtins required -latomic')
899 dep_atomic = cc.find_library('atomic')
902 if not cc.links('''#include <stdint.h>
905 return __sync_add_and_fetch(&v, (uint64_t)1);
907 dependencies : dep_atomic,
908 name : 'GCC 64bit atomics')
909 pre_args += '-DMISSING_64BIT_ATOMICS'
912 # TODO: shared/static? Is this even worth doing?
914 # When cross compiling we generally need to turn off the use of assembly,
915 # because mesa's assembly relies on building an executable for the host system,
916 # and running it to get information about struct sizes. There is at least one
917 # case of cross compiling where we can use asm, and that's x86_64 -> x86 when
918 # host OS == build OS, since in that case the build machine can run the host's
920 if with_asm and meson.is_cross_build()
921 if build_machine.system() != host_machine.system()
922 # TODO: It may be possible to do this with an exe_wrapper (like wine).
923 message('Cross compiling from one OS to another, disabling assembly.')
925 elif not (build_machine.cpu_family().startswith('x86') and host_machine.cpu_family() == 'x86')
926 # FIXME: Gentoo always sets -m32 for x86_64 -> x86 builds, resulting in an
927 # x86 -> x86 cross compile. We use startswith rather than == to handle this
929 # TODO: There may be other cases where the 64 bit version of the
930 # architecture can run 32 bit binaries (aarch64 and armv7 for example)
932 Cross compiling to different architectures, and the host cannot run
933 the build machine's binaries. Disabling assembly.
941 if host_machine.cpu_family() == 'x86'
942 if system_has_kms_drm
943 with_asm_arch = 'x86'
944 pre_args += ['-DUSE_X86_ASM', '-DUSE_MMX_ASM', '-DUSE_3DNOW_ASM',
947 if with_glx_read_only_text
948 pre_args += ['-DGLX_X86_READONLY_TEXT']
951 elif host_machine.cpu_family() == 'x86_64'
952 if system_has_kms_drm
953 with_asm_arch = 'x86_64'
954 pre_args += ['-DUSE_X86_64_ASM']
956 elif host_machine.cpu_family() == 'arm'
957 if system_has_kms_drm
958 with_asm_arch = 'arm'
959 pre_args += ['-DUSE_ARM_ASM']
961 elif host_machine.cpu_family() == 'aarch64'
962 if system_has_kms_drm
963 with_asm_arch = 'aarch64'
964 pre_args += ['-DUSE_AARCH64_ASM']
966 elif host_machine.cpu_family() == 'sparc64'
967 if system_has_kms_drm
968 with_asm_arch = 'sparc'
969 pre_args += ['-DUSE_SPARC_ASM']
971 elif host_machine.cpu_family() == 'ppc64le'
972 if system_has_kms_drm
973 with_asm_arch = 'ppc64le'
974 pre_args += ['-DUSE_PPC64LE_ASM']
979 # Check for standard headers and functions
980 if cc.has_header_symbol('sys/sysmacros.h', 'major')
981 pre_args += '-DMAJOR_IN_SYSMACROS'
982 elif cc.has_header_symbol('sys/mkdev.h', 'major')
983 pre_args += '-DMAJOR_IN_MKDEV'
986 foreach h : ['xlocale.h', 'sys/sysctl.h', 'linux/futex.h', 'endian.h', 'dlfcn.h']
987 if cc.compiles('#include <@0@>'.format(h), name : '@0@'.format(h))
988 pre_args += '-DHAVE_@0@'.format(h.to_upper().underscorify())
992 foreach f : ['strtof', 'mkostemp', 'posix_memalign', 'timespec_get', 'memfd_create']
993 if cc.has_function(f)
994 pre_args += '-DHAVE_@0@'.format(f.to_upper())
998 # strtod locale support
1003 #ifdef HAVE_XLOCALE_H
1004 #include <xlocale.h>
1007 locale_t loc = newlocale(LC_CTYPE_MASK, "C", NULL);
1008 const char *s = "1.0";
1010 double d = strtod_l(s, end, loc);
1011 float f = strtof_l(s, end, loc);
1016 name : 'strtod has locale support')
1017 pre_args += '-DHAVE_STRTOD_L'
1020 # Check for some linker flags
1021 ld_args_bsymbolic = []
1022 if cc.links('int main() { return 0; }', args : '-Wl,-Bsymbolic', name : 'Bsymbolic')
1023 ld_args_bsymbolic += '-Wl,-Bsymbolic'
1025 ld_args_gc_sections = []
1026 if cc.links('static char unused() { return 5; } int main() { return 0; }',
1027 args : '-Wl,--gc-sections', name : 'gc-sections')
1028 ld_args_gc_sections += '-Wl,--gc-sections'
1030 with_ld_version_script = false
1031 if cc.links('int main() { return 0; }',
1032 args : '-Wl,--version-script=@0@'.format(
1033 join_paths(meson.source_root(), 'build-support/conftest.map')),
1034 name : 'version-script')
1035 with_ld_version_script = true
1037 with_ld_dynamic_list = false
1038 if cc.links('int main() { return 0; }',
1039 args : '-Wl,--dynamic-list=@0@'.format(
1040 join_paths(meson.source_root(), 'build-support/conftest.dyn')),
1041 name : 'dynamic-list')
1042 with_ld_dynamic_list = true
1044 ld_args_build_id = []
1045 if build_machine.system() != 'darwin'
1046 ld_args_build_id += '-Wl,--build-id=sha1'
1049 # check for dl support
1050 if cc.has_function('dlopen')
1053 dep_dl = cc.find_library('dl')
1055 if cc.has_function('dladdr', dependencies : dep_dl)
1056 # This is really only required for megadrivers
1057 pre_args += '-DHAVE_DLADDR'
1060 if cc.has_function('dl_iterate_phdr')
1061 pre_args += '-DHAVE_DL_ITERATE_PHDR'
1063 error('Intel "Anvil" Vulkan driver requires the dl_iterate_phdr function')
1064 elif with_dri_i965 and get_option('shader-cache')
1065 error('Intel i965 GL driver requires dl_iterate_phdr when built with shader caching.')
1068 # Determine whether or not the rt library is needed for time functions
1069 if cc.has_function('clock_gettime')
1070 dep_clock = null_dep
1072 dep_clock = cc.find_library('rt')
1075 # TODO: some of these may be conditional
1076 dep_zlib = dependency('zlib', version : '>= 1.2.3')
1077 pre_args += '-DHAVE_ZLIB'
1078 dep_thread = dependency('threads')
1079 if dep_thread.found() and host_machine.system() != 'windows'
1080 pre_args += '-DHAVE_PTHREAD'
1082 'pthread_setaffinity_np',
1083 dependencies : dep_thread,
1084 prefix : '#include <pthread.h>',
1085 args : '-D_GNU_SOURCE')
1086 pre_args += '-DHAVE_PTHREAD_SETAFFINITY'
1089 dep_expat = dependency('expat')
1090 # this only exists on linux so either this is linux and it will be found, or
1091 # its not linux and and wont
1092 dep_m = cc.find_library('m', required : false)
1094 # Check for libdrm. various drivers have different libdrm version requirements,
1095 # but we always want to use the same version for all libdrm modules. That means
1096 # even if driver foo requires 2.4.0 and driver bar requires 2.4.3, if foo and
1097 # bar are both on use 2.4.3 for both of them
1098 dep_libdrm_amdgpu = null_dep
1099 dep_libdrm_radeon = null_dep
1100 dep_libdrm_nouveau = null_dep
1101 dep_libdrm_etnaviv = null_dep
1102 dep_libdrm_intel = null_dep
1104 _drm_amdgpu_ver = '2.4.95'
1105 _drm_radeon_ver = '2.4.71'
1106 _drm_nouveau_ver = '2.4.66'
1107 _drm_etnaviv_ver = '2.4.89'
1108 _drm_intel_ver = '2.4.75'
1112 ['intel', with_dri_i915 or with_gallium_i915],
1113 ['amdgpu', with_amd_vk or with_gallium_radeonsi],
1114 ['radeon', (with_gallium_radeonsi or with_dri_r100 or with_dri_r200 or
1115 with_gallium_r300 or with_gallium_r600)],
1116 ['nouveau', (with_gallium_nouveau or with_dri_nouveau)],
1117 ['etnaviv', with_gallium_etnaviv],
1120 # VC4 only needs core libdrm support of this version, not a libdrm_vc4
1126 # Loop over the enables versions and get the highest libdrm requirement for all
1129 foreach d : _libdrm_checks
1130 ver = get_variable('_drm_@0@_ver'.format(d[0]))
1131 if d[1] and ver.version_compare('>' + _drm_ver)
1137 message('libdrm @0@ needed because @1@ has the highest requirement'.format(_drm_ver, _drm_blame))
1140 # Then get each libdrm module
1141 foreach d : _libdrm_checks
1144 'dep_libdrm_' + d[0],
1145 dependency('libdrm_' + d[0], version : '>=' + _drm_ver)
1150 with_gallium_drisw_kms = false
1151 dep_libdrm = dependency(
1152 'libdrm', version : '>=' + _drm_ver,
1153 required : with_dri2 or with_dri3
1155 if dep_libdrm.found()
1156 pre_args += '-DHAVE_LIBDRM'
1157 if with_dri_platform == 'drm' and with_dri
1158 with_gallium_drisw_kms = true
1162 llvm_modules = ['bitwriter', 'engine', 'mcdisassembler', 'mcjit']
1163 llvm_optional_modules = []
1164 if with_amd_vk or with_gallium_radeonsi or with_gallium_r600
1165 llvm_modules += ['amdgpu', 'bitreader', 'ipo']
1166 if with_gallium_r600
1167 llvm_modules += 'asmparser'
1170 if with_gallium_opencl
1172 'all-targets', 'linker', 'coverage', 'instrumentation', 'ipo', 'irreader',
1173 'lto', 'option', 'objcarcopts', 'profiledata',
1175 llvm_optional_modules += ['coroutines']
1178 if with_amd_vk or with_gallium_radeonsi
1179 _llvm_version = '>= 6.0.0'
1180 elif with_gallium_swr
1181 _llvm_version = '>= 6.0.0'
1182 elif with_gallium_opencl or with_gallium_r600
1183 _llvm_version = '>= 3.9.0'
1185 _llvm_version = '>= 3.3.0'
1188 _shared_llvm = get_option('shared-llvm')
1190 _llvm = get_option('llvm')
1194 dep_llvm = dependency(
1196 version : _llvm_version,
1197 modules : llvm_modules,
1198 optional_modules : llvm_optional_modules,
1200 with_amd_vk or with_gallium_radeonsi or with_gallium_swr or
1201 with_gallium_opencl or _llvm == 'true'
1203 static : not _shared_llvm,
1205 with_llvm = dep_llvm.found()
1208 _llvm_version = dep_llvm.version().split('.')
1210 # 3 digits versions in LLVM only started from 3.4.1 on
1211 if dep_llvm.version().version_compare('>= 3.4.1')
1212 _llvm_patch = _llvm_version[2]
1218 '-DHAVE_LLVM=0x0@0@0@1@'.format(_llvm_version[0], _llvm_version[1]),
1219 '-DMESA_LLVM_VERSION_PATCH=@0@'.format(_llvm_patch),
1222 # LLVM can be built without rtti, turning off rtti changes the ABI of C++
1223 # programs, so we need to build all C++ code in mesa without rtti as well to
1224 # ensure that linking works.
1225 if dep_llvm.get_configtool_variable('has-rtti') == 'NO'
1226 cpp_args += '-fno-rtti'
1228 elif with_amd_vk or with_gallium_radeonsi or with_gallium_swr
1229 error('The following drivers require LLVM: Radv, RadeonSI, SWR. One of these is enabled, but LLVM is disabled.')
1232 if (with_amd_vk or with_gallium_radeonsi or with_gallium_opencl or
1233 (with_gallium_r600 and with_llvm))
1234 dep_elf = dependency('libelf', required : false)
1235 if not dep_elf.found()
1236 dep_elf = cc.find_library('elf')
1242 dep_glvnd = null_dep
1244 dep_glvnd = dependency('libglvnd', version : '>= 0.2.0')
1245 pre_args += '-DUSE_LIBGLVND=1'
1248 if with_valgrind != 'false'
1249 dep_valgrind = dependency('valgrind', required : with_valgrind == 'true')
1250 if dep_valgrind.found()
1251 pre_args += '-DHAVE_VALGRIND'
1254 dep_valgrind = null_dep
1257 # pthread stubs. Lets not and say we didn't
1259 prog_bison = find_program('bison', required : with_any_opengl)
1260 prog_flex = find_program('flex', required : with_any_opengl)
1262 dep_selinux = null_dep
1263 if get_option('selinux')
1264 dep_selinux = dependency('libselinux')
1265 pre_args += '-DMESA_SELINUX'
1268 if with_libunwind != 'false'
1269 dep_unwind = dependency('libunwind', required : with_libunwind == 'true')
1270 if dep_unwind.found()
1271 pre_args += '-DHAVE_LIBUNWIND'
1274 dep_unwind = null_dep
1277 if with_osmesa != 'none'
1278 if with_osmesa == 'classic' and not with_dri_swrast
1279 error('OSMesa classic requires dri (classic) swrast.')
1281 if with_osmesa == 'gallium' and not with_gallium_softpipe
1282 error('OSMesa gallium requires gallium softpipe or llvmpipe.')
1284 osmesa_lib_name = 'OSMesa'
1285 osmesa_bits = get_option('osmesa-bits')
1286 if osmesa_bits != '8'
1287 if with_dri or with_glx != 'disabled'
1288 error('OSMesa bits must be 8 if building glx or dir based drivers')
1290 osmesa_lib_name = osmesa_lib_name + osmesa_bits
1292 '-DCHAN_BITS=@0@'.format(osmesa_bits), '-DDEFAULT_SOFTWARE_DEPTH_BITS=31'
1297 # TODO: symbol mangling
1299 if with_platform_wayland
1300 dep_wl_scanner = dependency('wayland-scanner', native: true)
1301 prog_wl_scanner = find_program(dep_wl_scanner.get_pkgconfig_variable('wayland_scanner'))
1302 if dep_wl_scanner.version().version_compare('>= 1.15')
1303 wl_scanner_arg = 'private-code'
1305 wl_scanner_arg = 'code'
1307 dep_wl_protocols = dependency('wayland-protocols', version : '>= 1.8')
1308 dep_wayland_client = dependency('wayland-client', version : '>=1.11')
1309 dep_wayland_server = dependency('wayland-server', version : '>=1.11')
1311 dep_wayland_egl = dependency('wayland-egl-backend', version : '>= 3')
1312 dep_wayland_egl_headers = declare_dependency(
1313 compile_args : run_command(prog_pkgconfig, ['wayland-egl-backend', '--cflags']).stdout().split())
1315 wayland_dmabuf_xml = join_paths(
1316 dep_wl_protocols.get_pkgconfig_variable('pkgdatadir'), 'unstable',
1317 'linux-dmabuf', 'linux-dmabuf-unstable-v1.xml'
1319 pre_args += ['-DHAVE_WAYLAND_PLATFORM', '-DWL_HIDE_DEPRECATED']
1324 dep_xdamage = null_dep
1325 dep_xfixes = null_dep
1326 dep_x11_xcb = null_dep
1328 dep_xcb_glx = null_dep
1329 dep_xcb_dri2 = null_dep
1330 dep_xcb_dri3 = null_dep
1331 dep_dri2proto = null_dep
1332 dep_glproto = null_dep
1333 dep_xxf86vm = null_dep
1334 dep_xcb_dri3 = null_dep
1335 dep_xcb_present = null_dep
1336 dep_xcb_sync = null_dep
1337 dep_xcb_xfixes = null_dep
1338 dep_xshmfence = null_dep
1339 dep_xcb_xrandr = null_dep
1340 dep_xlib_xrandr = null_dep
1341 if with_platform_x11
1342 if with_glx == 'xlib' or with_glx == 'gallium-xlib'
1343 dep_x11 = dependency('x11')
1344 dep_xext = dependency('xext')
1345 dep_xcb = dependency('xcb')
1346 elif with_glx == 'dri'
1347 dep_x11 = dependency('x11')
1348 dep_xext = dependency('xext')
1349 dep_xdamage = dependency('xdamage', version : '>= 1.1')
1350 dep_xfixes = dependency('xfixes')
1351 dep_xcb_glx = dependency('xcb-glx', version : '>= 1.8.1')
1352 dep_xxf86vm = dependency('xxf86vm')
1354 if (with_any_vk or with_glx == 'dri' or
1355 (with_gallium_vdpau or with_gallium_xvmc or with_gallium_va or
1356 with_gallium_omx != 'disabled'))
1357 dep_xcb = dependency('xcb')
1358 dep_x11_xcb = dependency('x11-xcb')
1360 if with_any_vk or with_egl or (with_glx == 'dri' and with_dri_platform == 'drm')
1361 dep_xcb_dri2 = dependency('xcb-dri2', version : '>= 1.8')
1364 pre_args += '-DHAVE_DRI3'
1365 dep_xcb_dri3 = dependency('xcb-dri3')
1366 dep_xcb_present = dependency('xcb-present')
1367 # until xcb-dri3 has been around long enough to make a hard-dependency:
1368 if (dep_xcb_dri3.version().version_compare('>= 1.13') and
1369 dep_xcb_present.version().version_compare('>= 1.13'))
1370 pre_args += '-DHAVE_DRI3_MODIFIERS'
1372 dep_xcb_sync = dependency('xcb-sync')
1373 dep_xshmfence = dependency('xshmfence', version : '>= 1.1')
1376 if with_glx == 'dri'
1377 if with_dri_platform == 'drm'
1378 dep_dri2proto = dependency('dri2proto', version : '>= 2.8')
1380 dep_glproto = dependency('glproto', version : '>= 1.4.14')
1383 with_gallium_vdpau or with_gallium_xvmc or with_gallium_xa or
1384 with_gallium_omx != 'disabled'))
1385 dep_xcb_xfixes = dependency('xcb-xfixes')
1388 dep_xcb_xrandr = dependency('xcb-randr', version : '>= 1.12')
1389 dep_xlib_xrandr = dependency('xrandr', version : '>= 1.3')
1393 if get_option('gallium-extra-hud')
1394 pre_args += '-DHAVE_GALLIUM_EXTRA_HUD=1'
1397 _sensors = get_option('lmsensors')
1398 if _sensors != 'false'
1399 dep_lmsensors = cc.find_library('libsensors', required : _sensors == 'true')
1400 if dep_lmsensors.found()
1401 pre_args += '-DHAVE_LIBSENSORS=1'
1404 dep_lmsensors = null_dep
1407 foreach a : pre_args
1408 add_project_arguments(a, language : ['c', 'cpp'])
1411 add_project_arguments(a, language : ['c'])
1413 foreach a : cpp_args
1414 add_project_arguments(a, language : ['cpp'])
1417 inc_include = include_directories('include')
1421 if with_glx == 'xlib' or with_glx == 'gallium-xlib'
1422 gl_priv_reqs += ['x11', 'xext', 'xcb']
1423 elif with_glx == 'dri'
1425 'x11', 'xext', 'xdamage >= 1.1', 'xfixes', 'x11-xcb', 'xcb',
1427 if with_dri_platform == 'drm'
1428 gl_priv_reqs += 'xcb-dri2 >= 1.8'
1430 gl_priv_reqs += 'xxf86vm'
1432 if dep_libdrm.found()
1433 gl_priv_reqs += 'libdrm >= 2.4.75'
1437 if dep_thread.found()
1438 gl_priv_libs += ['-lpthread', '-pthread']
1441 gl_priv_libs += '-lm'
1444 gl_priv_libs += '-ldl'
1447 pkg = import('pkgconfig')
1449 env_test = environment()
1450 env_test.set('NM', find_program('nm').path())