[meson] Add ragel_subproject option
Add an option to build fallback ragel subproject when no suitable ragel
version is found, and make it off by default since most builder don’t
need ragel at all.
Fixes https://github.com/harfbuzz/harfbuzz/issues/3208 (hopefully)
diff --git a/meson_options.txt b/meson_options.txt
index 602d053..cd4526b 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -34,5 +34,7 @@
description: 'Don\'t separate ICU support as harfbuzz-icu module')
option('experimental_api', type: 'boolean', value: false,
description: 'Enable experimental APIs')
+option('ragel_subproject', type: 'boolean', value: false,
+ description: 'Build Ragel subproject if no suitable version is found')
option('fuzzer_ldflags', type: 'string',
description: 'Extra LDFLAGS used during linking of fuzzing binaries')
diff --git a/src/meson.build b/src/meson.build
index 444e614..e15da3a 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -291,10 +291,12 @@
)
ragel = find_program('ragel', version: '6.10', required: false)
-if not ragel.found() and meson.can_run_host_binaries() and cpp.get_id() != 'msvc'
- ragel = subproject('ragel').get_variable('ragel')
+has_ragel = ragel.found()
+if not has_ragel and get_option('ragel_subproject')
+ ragel = subproject('ragel').get_variable('ragel')
+ has_ragel = true
endif
-if not ragel.found()
+if not has_ragel
warning('You have to install ragel if you are going to develop HarfBuzz itself')
else
ragel_helper = find_program('gen-ragel-artifacts.py')
