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synced 2024-11-27 04:04:23 +08:00
meson: fix warnings about comparing unlike types
In the old days (0.42.x), when mesa's meson system was written the
recommendation for handling conditional dependencies was to define them
as empty lists. When meson would evaluate the dependencies of a target
it would recursively flatten all of the arguments, and empty lists would
be removed. There are some problems with this, among them that lists and
dependencies have different methods (namely .found()), so the
recommendation changed to use `dependency('', required : false)` for
such cases. This has the advantage of providing a .found() method, so
there is no need to do things like `dep_foo != [] and dep_foo.found()`,
such a dependency should never exist.
I've tested this with 0.42 (the minimum we claim to support) and 0.45.
On 0.45 this removes warnings about comparing unlike types, such as:
meson.build:1337: WARNING: Trying to compare values of different types
(DependencyHolder, list) using !=.
v2: - Use dependency('', required : false) instead of
declare_dependency(), the later will always report that it is
found, which is not what we want.
Signed-off-by: Dylan Baker <dylan.c.baker@intel.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
This commit is contained in:
Dylan Baker
parent
81ed629b38
commit
b5f92b6fd4
89
meson.build
89
meson.build
@ -29,6 +29,8 @@ project(
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default_options : ['buildtype=debugoptimized', 'c_std=c99', 'cpp_std=c++11']
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)
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null_dep = dependency('', required : false)
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system_has_kms_drm = ['openbsd', 'netbsd', 'freebsd', 'dragonfly', 'linux'].contains(host_machine.system())
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# Arguments for the preprocessor, put these in a separate array from the C and
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@ -422,7 +424,7 @@ elif _vdpau == 'auto'
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_vdpau = 'true'
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endif
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with_gallium_vdpau = _vdpau == 'true'
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dep_vdpau = []
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dep_vdpau = null_dep
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if with_gallium_vdpau
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dep_vdpau = dependency('vdpau', version : '>= 1.1')
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dep_vdpau = declare_dependency(
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@ -461,7 +463,7 @@ elif _xvmc == 'auto'
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_xvmc = 'true'
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endif
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with_gallium_xvmc = _xvmc == 'true'
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dep_xvmc = []
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dep_xvmc = null_dep
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if with_gallium_xvmc
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dep_xvmc = dependency('xvmc', version : '>= 1.0.6')
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endif
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@ -491,7 +493,8 @@ elif not (with_gallium_r600 or with_gallium_radeonsi or with_gallium_nouveau)
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error('OMX state tracker requires at least one of the following gallium drivers: r600, radeonsi, nouveau.')
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endif
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endif
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dep_omx = []
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with_gallium_omx = _omx
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dep_omx = null_dep
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dep_omx_other = []
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if ['auto', 'bellagio'].contains(_omx)
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dep_omx = dependency(
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@ -579,7 +582,7 @@ elif _va == 'auto'
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_va = 'true'
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endif
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with_gallium_va = _va == 'true'
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dep_va = []
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dep_va = null_dep
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if with_gallium_va
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dep_va = dependency('libva', version : '>= 0.38.0')
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dep_va_headers = declare_dependency(
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@ -638,7 +641,7 @@ if _opencl != 'disabled'
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with_gallium_opencl = true
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with_opencl_icd = _opencl == 'icd'
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else
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dep_clc = []
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dep_clc = null_dep
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with_gallium_opencl = false
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with_gallium_icd = false
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endif
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@ -831,7 +834,7 @@ else
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endif
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# Check for GCC style atomics
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dep_atomic = declare_dependency()
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dep_atomic = null_dep
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if cc.compiles('int main() { int n; return __atomic_load_n(&n, __ATOMIC_ACQUIRE); }',
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name : 'GCC atomic builtins')
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@ -976,7 +979,7 @@ endif
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# check for dl support
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if cc.has_function('dlopen')
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dep_dl = []
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dep_dl = null_dep
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else
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dep_dl = cc.find_library('dl')
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endif
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@ -995,7 +998,7 @@ endif
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# Determine whether or not the rt library is needed for time functions
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if cc.has_function('clock_gettime')
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dep_clock = []
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dep_clock = null_dep
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else
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dep_clock = cc.find_library('rt')
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endif
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@ -1013,7 +1016,7 @@ if with_amd_vk or with_gallium_radeonsi or with_gallium_r600 or with_gallium_ope
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dep_elf = cc.find_library('elf')
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endif
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else
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dep_elf = []
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dep_elf = null_dep
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endif
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dep_expat = dependency('expat')
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# this only exists on linux so either this is linux and it will be found, or
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@ -1024,12 +1027,12 @@ dep_m = cc.find_library('m', required : false)
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# but we always want to use the same version for all libdrm modules. That means
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# even if driver foo requires 2.4.0 and driver bar requires 2.4.3, if foo and
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# bar are both on use 2.4.3 for both of them
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dep_libdrm_amdgpu = []
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dep_libdrm_radeon = []
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dep_libdrm_nouveau = []
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dep_libdrm_etnaviv = []
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dep_libdrm_freedreno = []
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dep_libdrm_intel = []
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dep_libdrm_amdgpu = null_dep
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dep_libdrm_radeon = null_dep
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dep_libdrm_nouveau = null_dep
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dep_libdrm_etnaviv = null_dep
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dep_libdrm_freedreno = null_dep
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dep_libdrm_intel = null_dep
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_drm_amdgpu_ver = '2.4.91'
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_drm_radeon_ver = '2.4.71'
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@ -1114,7 +1117,7 @@ elif _llvm == 'true'
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dep_llvm = dependency('llvm', version : _llvm_version, modules : llvm_modules)
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with_llvm = true
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else
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dep_llvm = []
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dep_llvm = null_dep
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with_llvm = false
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endif
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if with_llvm
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@ -1144,7 +1147,7 @@ elif with_amd_vk or with_gallium_radeonsi or with_gallium_swr
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error('The following drivers require LLVM: Radv, RadeonSI, SWR. One of these is enabled, but LLVM is disabled.')
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endif
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dep_glvnd = []
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dep_glvnd = null_dep
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if with_glvnd
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dep_glvnd = dependency('libglvnd', version : '>= 0.2.0')
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pre_args += '-DUSE_LIBGLVND=1'
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@ -1156,7 +1159,7 @@ if with_valgrind != 'false'
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pre_args += '-DHAVE_VALGRIND'
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endif
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else
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dep_valgrind = []
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dep_valgrind = null_dep
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endif
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# pthread stubs. Lets not and say we didn't
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@ -1164,7 +1167,7 @@ endif
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prog_bison = find_program('bison', required : with_any_opengl)
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prog_flex = find_program('flex', required : with_any_opengl)
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dep_selinux = []
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dep_selinux = null_dep
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if get_option('selinux')
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dep_selinux = dependency('libselinux')
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pre_args += '-DMESA_SELINUX'
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@ -1178,7 +1181,7 @@ if with_libunwind != 'false'
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pre_args += '-DHAVE_LIBUNWIND'
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endif
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else
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dep_unwind = []
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dep_unwind = null_dep
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endif
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# TODO: gallium-hud
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@ -1217,29 +1220,29 @@ if with_platform_wayland
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pre_args += ['-DHAVE_WAYLAND_PLATFORM', '-DWL_HIDE_DEPRECATED']
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else
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prog_wl_scanner = []
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dep_wl_protocols = []
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dep_wayland_client = []
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dep_wayland_server = []
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dep_wl_protocols = null_dep
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dep_wayland_client = null_dep
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dep_wayland_server = null_dep
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wayland_dmabuf_xml = ''
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endif
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dep_x11 = []
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dep_xext = []
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dep_xdamage = []
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dep_xfixes = []
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dep_x11_xcb = []
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dep_xcb = []
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dep_xcb_glx = []
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dep_xcb_dri2 = []
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dep_xcb_dri3 = []
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dep_dri2proto = []
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dep_glproto = []
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dep_xxf86vm = []
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dep_xcb_dri3 = []
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dep_xcb_present = []
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dep_xcb_sync = []
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dep_xcb_xfixes = []
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dep_xshmfence = []
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dep_x11 = null_dep
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dep_xext = null_dep
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dep_xdamage = null_dep
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dep_xfixes = null_dep
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dep_x11_xcb = null_dep
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dep_xcb = null_dep
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dep_xcb_glx = null_dep
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dep_xcb_dri2 = null_dep
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dep_xcb_dri3 = null_dep
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dep_dri2proto = null_dep
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dep_glproto = null_dep
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dep_xxf86vm = null_dep
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dep_xcb_dri3 = null_dep
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dep_xcb_present = null_dep
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dep_xcb_sync = null_dep
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dep_xcb_xfixes = null_dep
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dep_xshmfence = null_dep
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if with_platform_x11
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if with_glx == 'xlib' or with_glx == 'gallium-xlib'
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dep_x11 = dependency('x11')
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@ -1299,7 +1302,7 @@ if _sensors != 'false'
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pre_args += '-DHAVE_LIBSENSORS=1'
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endif
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else
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dep_lmsensors = []
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dep_lmsensors = null_dep
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endif
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# TODO: gallium tests
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@ -1334,7 +1337,7 @@ gl_priv_reqs = [
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if dep_libdrm.found()
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gl_priv_reqs += 'libdrm >= 2.4.75'
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endif
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if dep_xxf86vm != [] and dep_xxf86vm.found()
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if dep_xxf86vm.found()
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gl_priv_reqs += 'xxf86vm'
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endif
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if with_dri_platform == 'drm'
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@ -1348,7 +1351,7 @@ endif
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if dep_m.found()
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gl_priv_libs += '-lm'
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endif
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if dep_dl != [] and dep_dl.found()
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if dep_dl.found()
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gl_priv_libs += '-ldl'
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endif
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@ -339,7 +339,7 @@ files_libgallium = files(
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'nir/tgsi_to_nir.h',
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)
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if dep_libdrm != [] and dep_libdrm.found()
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if dep_libdrm.found()
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files_libgallium += files(
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'renderonly/renderonly.c',
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'renderonly/renderonly.h',
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@ -46,7 +46,7 @@ files_libappleglx = files(
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'glx_empty.c',
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)
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dep_xplugin = []
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dep_xplugin = null_dep
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if with_dri_platform == 'apple'
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dep_xplugin = meson.get_compiler('c').find_library('Xplugin')
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endif
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@ -137,7 +137,7 @@ gl_lib_cargs = [
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'-DDEFAULT_DRIVER_DIR="@0@"'.format(dri_search_path),
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]
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if dep_xxf86vm != [] and dep_xxf86vm.found()
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if dep_xxf86vm.found()
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gl_lib_cargs += '-DHAVE_XF86VIDMODE'
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endif
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