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meson: parse lua version when the binary is unversioned. 

I had the case on my machine where `lua` was version 5.4.4 and the
lua-lgi test succeeded fine, but then the demo plug-in would fail to run
with the error message from #11876.

Let's parse the output of `lua -v` to detect the version ourselves and
therefore be able to output proper error messages for packagers not to
assume that the Lua interpreter they are using will work fine.
This commit is contained in:
Jehan 2024-08-09 17:08:36 +02:00
parent 1c08f08e97
commit 9c3884c605
1 changed files with 31 additions and 8 deletions
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31
meson.build
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@ -1126,12 +1126,35 @@ if get_option('lua').allowed()
lua = find_program(lua_bin, required: false) lua = find_program(lua_bin, required: false)
if lua.found() and meson.can_run_host_binaries() if lua.found() and meson.can_run_host_binaries()
if lua_bin == 'lua'
is_supported_lua = false
lua_cmd = run_command(lua, '-v', check: false)
if lua_cmd.returncode() == 0
message('Found Lua: @0@'.format(lua_cmd.stdout().strip()))
lua_stdout = lua_cmd.stdout().split()
if lua_stdout[0].to_lower() == lua_bin
message('Parsed Lua version: @0@'.format(lua_stdout[1]))
# We only want any lua version 5.1.x
if lua_stdout[1].version_compare('>=5.1.0') and lua_stdout[1].version_compare('<5.2.0')
is_supported_lua = true
else
warning('Unsupported Lua version (!= 5.1): @0@'.format(lua_stdout[1]))
endif
endif
else
warning('Failed to run `lua -v`')
endif
else
is_supported_lua = true
endif
if is_supported_lua
have_lua_lgi = run_command(lua, '-e', have_lua_lgi = run_command(lua, '-e',
''' '''
local lgi = require 'lgi' local lgi = require 'lgi'
''', ''',
check: false check: false).returncode() == 0
).returncode() == 0 endif
if have_lua_lgi if have_lua_lgi
break break
@ -1142,8 +1165,8 @@ if get_option('lua').allowed()
have_lua = get_option('lua').enabled() or have_lua_lgi have_lua = get_option('lua').enabled() or have_lua_lgi
if have_lua and not have_lua_lgi if have_lua and not have_lua_lgi
lua_warning = ''' lua_warning = '''
Neither Luajit nor Lua, with lua-lgi support, was found. Or you are Neither Luajit nor Lua 5.1, with lua-lgi support, was found.
cross-compiling so we couldn't test lua-lgi support. Or you are cross-compiling so we couldn't test lua-lgi support.
Lua plug-ins will be installed anyway but you should make sure that Lua plug-ins will be installed anyway but you should make sure that
luajit or lua and that LGI are available at installation, otherwise luajit or lua and that LGI are available at installation, otherwise
installed plug-ins won't be usable. installed plug-ins won't be usable.