meson: move libfdt together with other dependencies
Move the libfdt detection code together with other dependencies instead
of keeping it with subprojects. This has the disadvantage of performing
the detection even if no target requires libfdt; but it has the advantage
that Kconfig will be able to observe the availability of the library.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/meson.build b/meson.build
index ab1f44b..dd4a28f 100644
--- a/meson.build
+++ b/meson.build
@@ -1858,6 +1858,34 @@
endif
endif
+fdt = not_found
+fdt_opt = get_option('fdt')
+if fdt_opt == 'enabled' and get_option('wrap_mode') == 'nodownload'
+ fdt_opt = 'system'
+endif
+if fdt_opt in ['enabled', 'system'] or (fdt_opt == 'auto' and have_system)
+ fdt = cc.find_library('fdt', required: fdt_opt == 'system')
+ if fdt.found() and cc.links('''
+ #include <libfdt.h>
+ #include <libfdt_env.h>
+ int main(void) { fdt_find_max_phandle(NULL, NULL); return 0; }''',
+ dependencies: fdt)
+ fdt_opt = 'system'
+ elif fdt_opt != 'system'
+ fdt_opt = get_option('wrap_mode') == 'nodownload' ? 'disabled' : 'internal'
+ fdt = not_found
+ else
+ error('system libfdt is too old (1.5.1 or newer required)')
+ endif
+endif
+if fdt_opt == 'internal'
+ assert(not fdt.found())
+ libfdt_proj = subproject('dtc', required: true,
+ default_options: ['tools=false', 'yaml=disabled',
+ 'python=disabled', 'default_library=static'])
+ fdt = libfdt_proj.get_variable('libfdt_dep')
+endif
+
rdma = not_found
if not get_option('rdma').auto() or have_system
libumad = cc.find_library('ibumad', required: get_option('rdma'))
@@ -2199,6 +2227,7 @@
config_host_data.set('CONFIG_CAPSTONE', capstone.found())
config_host_data.set('CONFIG_COCOA', cocoa.found())
config_host_data.set('CONFIG_DARWIN', host_os == 'darwin')
+config_host_data.set('CONFIG_FDT', fdt.found())
config_host_data.set('CONFIG_FUZZ', get_option('fuzzing'))
config_host_data.set('CONFIG_GCOV', get_option('b_coverage'))
config_host_data.set('CONFIG_LIBUDEV', libudev.found())
@@ -3024,14 +3053,16 @@
error('No accelerator available for target @0@'.format(target))
endif
- actual_target_dirs += target
config_target += keyval.load('configs/targets' / target + '.mak')
config_target += { 'TARGET_' + config_target['TARGET_ARCH'].to_upper(): 'y' }
- if 'TARGET_NEED_FDT' in config_target
+ if 'TARGET_NEED_FDT' in config_target and not fdt.found()
fdt_required += target
+ continue
endif
+ actual_target_dirs += target
+
# Add default keys
if 'TARGET_BASE_ARCH' not in config_target
config_target += {'TARGET_BASE_ARCH': config_target['TARGET_ARCH']}
@@ -3119,6 +3150,10 @@
command: [find_program('scripts/make-config-poison.sh'),
target_configs_h])
+if fdt_required.length() > 0
+ error('fdt disabled but required by targets ' + ', '.join(fdt_required))
+endif
+
###############
# Subprojects #
###############
@@ -3129,44 +3164,6 @@
libvfio_user_dep = libvfio_user_proj.get_variable('libvfio_user_dep')
endif
-fdt = not_found
-fdt_opt = get_option('fdt')
-if fdt_required.length() > 0 or fdt_opt == 'enabled'
- if fdt_opt == 'disabled'
- error('fdt disabled but required by targets ' + ', '.join(fdt_required))
- endif
-
- if fdt_opt in ['enabled', 'auto', 'system']
- if get_option('wrap_mode') == 'nodownload'
- fdt_opt = 'system'
- endif
- fdt = cc.find_library('fdt', required: fdt_opt == 'system')
- if fdt.found() and cc.links('''
- #include <libfdt.h>
- #include <libfdt_env.h>
- int main(void) { fdt_find_max_phandle(NULL, NULL); return 0; }''',
- dependencies: fdt)
- fdt_opt = 'system'
- elif fdt_opt == 'system'
- error('system libfdt requested, but it is too old (1.5.1 or newer required)')
- else
- fdt_opt = 'internal'
- fdt = not_found
- endif
- endif
- if not fdt.found()
- assert(fdt_opt == 'internal')
- libfdt_proj = subproject('dtc', required: true,
- default_options: ['tools=false', 'yaml=disabled',
- 'python=disabled', 'default_library=static'])
- fdt = libfdt_proj.get_variable('libfdt_dep')
- endif
-else
- fdt_opt = 'disabled'
-endif
-
-config_host_data.set('CONFIG_FDT', fdt.found())
-
vhost_user = not_found
if host_os == 'linux' and have_vhost_user
libvhost_user = subproject('libvhost-user')
@@ -4417,7 +4414,7 @@
summary_info += {'Linux io_uring support': linux_io_uring}
summary_info += {'ATTR/XATTR support': libattr}
summary_info += {'RDMA support': rdma}
-summary_info += {'fdt support': fdt_opt == 'disabled' ? false : fdt_opt}
+summary_info += {'fdt support': fdt_opt == 'internal' ? 'internal' : fdt}
summary_info += {'libcap-ng support': libcap_ng}
summary_info += {'bpf support': libbpf}
summary_info += {'rbd support': rbd}
