220239 2021-01-04 06:01:59 -0800 WebKit IPC is slow to develop because changing .messages.in or the generator will cause rebuild 2021-01-05 13:00:58 -0800 1 1 1 Unclassified WebKit WebKit2 WebKit Local Build All All RESOLVED WONTFIX P2 Normal --- 217211 1 kkinnunen kkinnunen ap darin oldest_to_newest 1717104 0 kkinnunen 2021-01-04 06:01:59 -0800 WebKit IPC is slow to develop because changing .messages.in or the generator will cause rebuild. It will rebuild all the files that depend on the generated content, even if the generated content has not changed. 1717105 1 416937 kkinnunen 2021-01-04 06:22:14 -0800 Created attachment 416937 Patch 1717143 2 416937 ap 2021-01-04 09:41:03 -0800 Comment on attachment 416937 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=416937&action=review > Source/WebKit/ChangeLog:8 > + Write the generated IPC files only if their content has changed. Does this mean that the generated IPC files will be re-generated every time forever? If timestamps on the generated files are not updated, they will always be considered out of date by the build system. 1717237 3 kkinnunen 2021-01-05 00:16:55 -0800 (In reply to Alexey Proskuryakov from comment #2) > > Source/WebKit/ChangeLog:8 > > + Write the generated IPC files only if their content has changed. > > Does this mean that the generated IPC files will be re-generated every time > forever? If timestamps on the generated files are not updated, they will > always be considered out of date by the build system. Yes, you're right it does. My head was at stamp files.. Yeah, probably does not make sense to fix this with the current build system structure. 1717443 4 416937 darin 2021-01-05 13:00:58 -0800 Comment on attachment 416937 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=416937&action=review >> Source/WebKit/ChangeLog:8 >> + Write the generated IPC files only if their content has changed. > > Does this mean that the generated IPC files will be re-generated every time forever? If timestamps on the generated files are not updated, they will always be considered out of date by the build system. This is a recurring problem/pattern in make files. It’s surprisingly difficult to update files only if they are modified but avoid regenerating them every time we build; but if we could figure out how to do it, it’s the behavior we’d prefer for all generated files! 416937 2021-01-04 06:22:14 -0800 2021-01-05 08:43:57 -0800 Patch bug-220239-20210104162212.patch text/plain 6253 kkinnunen U3VidmVyc2lvbiBSZXZpc2lvbjogMjcxMTI3CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViS2l0L0No YW5nZUxvZyBiL1NvdXJjZS9XZWJLaXQvQ2hhbmdlTG9nCmluZGV4IGY4Y2ZmMWM1ZjJhMDIyZWNj Nzg2MTg0YzRhZjMxZDg0ZGE4MzhkN2EuLjE1NzhmN2VjN2MxOThlYWZlZjMwYzAxOGYxOTEwZTBj ZjAyYzc3YmYgMTAwNjQ0Ci0tLSBhL1NvdXJjZS9XZWJLaXQvQ2hhbmdlTG9nCisrKyBiL1NvdXJj ZS9XZWJLaXQvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsMjMgQEAKKzIwMjEtMDEtMDQgIEtpbW1vIEtp bm51bmVuICA8a2tpbm51bmVuQGFwcGxlLmNvbT4KKworICAgICAgICBXZWJLaXQgSVBDIGlzIHNs b3cgdG8gZGV2ZWxvcCBiZWNhdXNlIGNoYW5naW5nIC5tZXNzYWdlcy5pbiBvciB0aGUgZ2VuZXJh dG9yIHdpbGwgY2F1c2UgcmVidWlsZAorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9z 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