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meson: properly handle readline if it's explicitly disabled

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If readline is detected using pkg-config it would ignore the readline
option.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This commit is contained in:
Pavel Hrdina 2020-10-08 13:24:55 +02:00
parent c8be9ccc36
commit fc125d7e5c
1 changed files with 20 additions and 16 deletions
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36
meson.build
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@ -1243,26 +1243,30 @@ endif
# readline 7.0 is the first version which includes pkg-config support
readline_version = '7.0'
readline_dep = dependency('readline', version: '>=' + readline_version, required: false)
if not readline_dep.found()
readline_dep = cc.find_library('readline', required: get_option('readline'))
if not get_option('readline').disabled()
readline_dep = dependency('readline', version: '>=' + readline_version, required: false)
if not readline_dep.found()
readline_dep = cc.find_library('readline', required: get_option('readline'))
if readline_dep.found()
# This variable is present in all reasonable (5.0+) readline versions;
# however, the macOS base system contains a library called libedit which
# takes over the readline name despite lacking many of its features. We
# want to make sure we only enable readline support when linking against
# the actual readline library, and the availability of this specific
# variable is as good a witness for that fact as any.
correct_rl = cc.has_header_symbol('readline/readline.h', 'rl_completion_quote_character', prefix: '#include <stdio.h>')
if not correct_rl
if get_option('readline').enabled()
error('readline is missing rl_completion_quote_character')
else
readline_dep = dependency('', required: false)
if readline_dep.found()
# This variable is present in all reasonable (5.0+) readline versions;
# however, the macOS base system contains a library called libedit which
# takes over the readline name despite lacking many of its features. We
# want to make sure we only enable readline support when linking against
# the actual readline library, and the availability of this specific
# variable is as good a witness for that fact as any.
correct_rl = cc.has_header_symbol('readline/readline.h', 'rl_completion_quote_character', prefix: '#include <stdio.h>')
if not correct_rl
if get_option('readline').enabled()
error('readline is missing rl_completion_quote_character')
else
readline_dep = dependency('', required: false)
endif
endif
endif
endif
else
readline_dep = dependency('', required: false)
endif
if readline_dep.found()
# Gross kludge for readline include path obtained through pkg-config.