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https://bugs.gentoo.org/881841
https://github.com/garrigue/labltk/pull/17
From e1e850972c4190686a040574b91d61948cc559b5 Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Sat, 19 Nov 2022 01:14:25 +0000
Subject: [PATCH] config: Fix -Wimplicit-int, -Wstrict-prototypes (Clang 16)
Followup to be8c977d320ed40cacb322658d4ceba5e583b3a6.
Clang 16 makes -Wimplicit-int error by default.
Unfortunately, this can lead to misconfiguration or miscompilation of software as configure
tests may then return the wrong result.
We also fix -Wstrict-prototypes while here as it's easy to do and it prepares
us for C23.
For more information, see LWN.net [0] or LLVM's Discourse [1], the Gentoo wiki [2],
or the (new) c-std-porting mailing list [3].
[0] https://lwn.net/Articles/913505/
[1] https://discourse.llvm.org/t/configure-script-breakage-with-the-new-werror-implicit-function-declaration/65213
[2] https://wiki.gentoo.org/wiki/Modern_C_porting
[3] hosted at lists.linux.dev.
Signed-off-by: Sam James <sam@gentoo.org>
--- a/config/auto-aux/hasgot
+++ b/config/auto-aux/hasgot
@@ -31,7 +31,7 @@ while : ; do
done
(for f in $*; do echo "int $f();"; done
- echo "int main() {"
+ echo "int main(void) {"
for f in $*; do echo " $f();"; done
echo "}") >> hasgot.c
--- a/config/auto-aux/tclversion.c
+++ b/config/auto-aux/tclversion.c
@@ -18,7 +18,7 @@
#include <tcl.h>
#include <tk.h>
-main ()
+int main (void)
{
puts(TCL_VERSION);
}
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