Issue #18666 has been updated by hsbt (Hiroshi SHIBATA). Status changed from Assigned to Feedback @duerst This issue may cause with your environment. ---------------------------------------- Bug #18666: No rule to make target 'yaml/yaml.h', needed by 'api.o' https://bugs.ruby-lang.org/issues/18666#change-101366 * Author: duerst (Martin Dürst) * Status: Feedback * Priority: Normal * Assignee: hsbt (Hiroshi SHIBATA) * ruby -v: ruby 3.1.0dev (2021-06-03T06:59:33Z master 7e14762159) [x86_64-linux] * Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN ---------------------------------------- When updating my Ruby compilation with `make up; make`, I hit the following error: ``` make[2]: Entering directory '/home/duerst/14ruby/ext/psych' make[2]: *** No rule to make target 'yaml/yaml.h', needed by 'api.o'. Stop. make[2]: Leaving directory '/home/duerst/14ruby/ext/psych' make[1]: *** [exts.mk:262: ext/psych/all] Error 2 make[1]: Leaving directory '/home/duerst/14ruby' make: *** [uncommon.mk:307: build-ext] Error 2 ``` `./ruby -v` is `ruby 3.2.0dev (2022-03-22T19:51:05Z master 0140e6c41e) [x86_64-linux]` All of this is on Ubuntu 20.04 on WSL2 on Windows 10. My guess is that this bug is related to recent changes in psych/yaml/... ---Files-------------------------------- mkmf.log (14.8 KB) mkmf.log (2.57 KB) -- https://bugs.ruby-lang.org/