On Wed, 22 Jan 2025 21:39:55 +0100, Aurelien Jarno <aure...@debian.org> wrote: > It's actually quite noticeable on fast machines for the rtpengine > package, and even with the latest dpkg mitigations. The build time on > fast machine increased on average by a factor ~30, for instance: > amd64: 5m => 2h39 > arm64: 5m => 3h4 > ppc64el: 4m => 1h45
Indeed. What’s happening here is that all the $(shell pkg-config) invocations in various Makefiles cause all the flags to be re-evaluated every time Make starts and for every command invocation, which ends up taking forever. A quick workaround for rtpengine is to add CFLAGS := $(CFLAGS) and LDLIBS := $(LDLIBS) after their construction in daemon/Makefile etc. The seemingly obvious fix in dpkg would be to declare the variables in Makefile snippets using :=, but that would technically be a change in semantics. Regards, Stephen
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