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[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)
This commit is contained in:
Khaled Hosny 2021-09-15 14:02:52 +02:00 committed by Behdad Esfahbod
parent 60a38d7988
commit a59e7ec993
2 changed files with 7 additions and 3 deletions
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2
meson_options.txt
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@ -34,5 +34,7 @@ option('icu_builtin', type: 'boolean', value: false,
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')

8
src/meson.build
View File

@ -291,10 +291,12 @@ hb_gobject_headers = files(
)
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')