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meson: Only use cairo fallbacks when needed

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On Visual Studio builds, since Cairo builds tend not to generate
pkg-config files for us, look for the headers and .lib's, before
attempting to download the Cairo repo (which is quite large) and
building it.

We can simplify this process when Meson gains the ability to check
for the dependencies in a declarative fashion, but before that, this
is what must be done.
This commit is contained in:
Chun-wei Fan 2019-03-13 12:13:22 +08:00 committed by Christoph Reiter
parent 8dc95560e2
commit 2d2ad0a997
1 changed files with 40 additions and 7 deletions
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47
meson.build
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@ -307,10 +307,35 @@ if os_unix
endif
gmodule_dep = dependency('gmodule-2.0', version: glib_req,
fallback : ['glib', 'libgmodule_dep'])
cairo_dep = dependency('cairo', version: cairo_req,
fallback : ['cairo', 'libcairo_dep'])
cairogobj_dep = dependency('cairo-gobject', version: cairo_req,
fallback : ['cairo', 'libcairogobject_dep'])
# Update when we can find depedencies in a declarative manner
cairo_dep = dependency('cairo', version: cairo_req, required: cc.get_id() != 'msvc')
cairogobj_dep = dependency('cairo-gobject', version: cairo_req, required: cc.get_id() != 'msvc')
# Remove when we can find depedencies in a declarative manner
if not cairo_dep.found() and cc.get_id() == 'msvc'
if cc.has_header('cairo.h') and cc.has_header('cairo-win32.h')
cairo_dep = cc.find_library('cairo', required: false)
endif
endif
if not cairo_dep.found()
cairo_dep = dependency('cairo', version: cairo_req,
fallback : ['cairo', 'libcairo_dep'])
endif
# Remove when we can find depedencies in a declarative manner
if not cairogobj_dep.found() and cc.get_id() == 'msvc'
if cc.has_header('cairo-gobject.h')
cairogobj_dep = cc.find_library('cairo-gobject', required: false)
endif
endif
if not cairogobj_dep.found()
cairogobj_dep = dependency('cairo-gobject', version: cairo_req,
fallback : ['cairo', 'libcairogobject_dep'])
endif
pango_dep = dependency('pango', version: pango_req,
fallback : ['pango', 'libpango_dep'])
@ -370,6 +395,8 @@ if cairo_found_type == 'internal'
cairo_features = subproject('cairo').get_variable('built_features')
endif
cairogobj_found_type = cairogobj_dep.type_name()
cairo_backends = []
foreach backend: [ ['cairo-xlib', cairo_req, x11_enabled],
['cairo-win32', cairo_req, win32_enabled],
@ -383,12 +410,14 @@ foreach backend: [ ['cairo-xlib', cairo_req, x11_enabled],
if dependency(cairo_backend, version: cairo_backend_req, required : cc.get_id() != 'msvc').found()
cairo_backends += cairo_backend
endif
else
elif cairo_found_type == 'internal'
foreach f: cairo_features
if f['name'] == cairo_backend
cairo_backends += cairo_backend
endif
endforeach
elif cc.get_id() == 'msvc' and cairo_dep.found()
cairo_backends += 'cairo-win32'
endif
endif
endforeach
@ -396,10 +425,10 @@ endforeach
cairo_pkg_found = false
cairogobj_pkg_found = false
if cairo_dep.found()
if cairo_found_type == 'internal' or cairo_found_type == 'pkgconfig'
cairo_pkg_found = true
endif
if cairogobj_dep.found()
if cairogobj_found_type == 'internal' or cairogobj_found_type == 'pkgconfig'
cairogobj_pkg_found = true
endif
@ -613,9 +642,13 @@ gdk_packages = ' '.join([ pango_pkgname, pango_req,
if cairo_pkg_found
gdk_packages += ' '.join([ ' cairo', cairo_req ])
elif cc.get_id() == 'msvc' and cairo_dep.found()
gdk_packages += ' '.join([ ' -lcairo' ])
endif
if cairogobj_pkg_found
gdk_packages += ' '.join([ ' cairo-gobject', cairo_req ])
elif cc.get_id() == 'msvc' and cairogobj_dep.found()
gdk_packages += ' '.join([ ' -lcairo-gobject' ])
endif
pkgconf.set('GDK_PACKAGES', gdk_packages)