commit 40ea7b163e15d70788aa7a8189f9000109a7b931
from: Omar Polo <op@omarpolo.com>
date: Wed Apr 03 14:03:42 2024 UTC

use -Werror=implicit-function-declaration for function detection

the previous -Werror triggers too easily: on NixOS for example the
FORTIFY_SOURCE #warning about a missing optimization level breaks all
the checks when using -O0 (which is the default for non-release builds).

commit - be265175c65f1b5425e294b06874e87aa900bde1
commit + 40ea7b163e15d70788aa7a8189f9000109a7b931
blob - 9f0dc5475fc5ce63eadc8648e8a908c52d52bb9f
blob + ae7fc40abe2957fbf05f3359c32c9c379d64ac78
--- configure
+++ configure
@@ -146,7 +146,7 @@ NEED_OPENBSD_SOURCE=0
 NEED_LIBBSD_OPENBSD_VIS=0
 
 COMPATS=
-COMP="${CC} ${CFLAGS} -Wno-unused -Werror"
+COMP="${CC} ${CFLAGS} -Werror=implicit-function-declaration"
 
 # singletest name var extra-cflags extra-libs msg
 singletest() {