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ext/psych/extconf.rb: Fail when libyaml is unavailable

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WHen libyaml is not installed, make fails with the following cryptic
message:

```
gmake[2]: Entering directory '/home/chkbuild/chkbuild-crossruby/tmp/build/20220325T045825Z/ruby/ext/psych'
gmake[2]: *** No rule to make target 'yaml/yaml.h', needed by 'psych.o'.  Stop.
gmake[2]: Leaving directory '/home/chkbuild/chkbuild-crossruby/tmp/build/20220325T045825Z/ruby/ext/psych'
```

I think it should give up building psych with a clear message.
This commit is contained in:
Yusuke Endoh 2022-03-25 17:33:30 +09:00
parent 1b0f05168d
commit ca85f16a7d
Notes: git 2022-03-27 19:34:32 +09:00
1 changed files with 5 additions and 0 deletions
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5
ext/psych/extconf.rb
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@ -10,6 +10,11 @@ dir_config 'libyaml'
if enable_config("bundled-libyaml", false) || !pkg_config('yaml-0.1') && !(find_header('yaml.h') && find_library('yaml', 'yaml_get_version'))
# Embed libyaml since we could not find it.
unless File.exist?("#{$srcdir}/yaml")
puts "failed to build psych because no libyaml is available"
exit
end
$VPATH << "$(srcdir)/yaml"
$INCFLAGS << " -I$(srcdir)/yaml"