diff options
Diffstat (limited to 'net-irc/unrealircd/files/unrealircd-6.0.4.2-configure-clang16.patch')
| -rw-r--r-- | net-irc/unrealircd/files/unrealircd-6.0.4.2-configure-clang16.patch | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/net-irc/unrealircd/files/unrealircd-6.0.4.2-configure-clang16.patch b/net-irc/unrealircd/files/unrealircd-6.0.4.2-configure-clang16.patch new file mode 100644 index 000000000000..d884a1000b52 --- /dev/null +++ b/net-irc/unrealircd/files/unrealircd-6.0.4.2-configure-clang16.patch @@ -0,0 +1,64 @@ +https://github.com/unrealircd/unrealircd/pull/242 + +From 3246e472842237ac9e655e254380c4dd8fea7abc Mon Sep 17 00:00:00 2001 +From: Sam James <sam@gentoo.org> +Date: Sun, 18 Dec 2022 06:18:51 +0000 +Subject: [PATCH] configure.ac: fix -Wimplicit-function-declaration + +Clang 16 makes -Wimplicit-function-declaration 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. + +Fixes the following: +``` +configure:6250: checking if your system has IPv6 support +configure:6275: x86_64-pc-linux-gnu-gcc -o conftest -O2 -pipe -march=native -fdiagnostics-color=always -frecord-gcc-switches -Wreturn-type -ggdb3 -Werror=implicit-function-declaration -Werror=implicit-int -fno-strict-aliasing -fno-common -funsigned-char -Wall -Wextra -Waggregate-return -Wformat-nonliteral -Wduplicated-cond -Wduplicated-branches -Wparentheses -Wno-pointer-sign -Wno-format-zero-length -Wno-format-truncation -Wno-format-overflow -Wno-unused -Wno-unused-parameter -Wno-unused-but-set-parameter -Wno-char-subscripts -Wno-sign-compare -Wno-empty-body -Wno-pragmas -Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0 -Wl,-z,pack-relative-relocs conftest.c >&5 +conftest.c: In function 'main': +conftest.c:30:1: error: implicit declaration of function 'exit' [-Werror=implicit-function-declaration] + 30 | exit(0); /* We only check if the code compiles, that's enough. We can deal with missing runtime IPv6 */ + | ^~~~ +conftest.c:28:1: note: include '<stdlib.h>' or provide a declaration of 'exit' + 27 | #include <sys/socket.h> + +++ |+#include <stdlib.h> + 28 | int main() { +conftest.c:30:1: warning: incompatible implicit declaration of built-in function 'exit' [-Wbuiltin-declaration-mismatch] + 30 | exit(0); /* We only check if the code compiles, that's enough. We can deal with missing runtime IPv6 */ + | ^~~~ +conftest.c:30:1: note: include '<stdlib.h>' or provide a declaration of 'exit' +cc1: some warnings being treated as errors +configure:6275: $? = 1 +``` + +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. +--- a/configure.ac ++++ b/configure.ac +@@ -326,7 +326,7 @@ fi + ]) + AC_CACHE_CHECK(if your system prepends an underscore on symbols,ac_cv_underscore,[ + cat >uscore.c << __EOF__ +-int main() { ++int main(void) { + return 0; + } + __EOF__ +@@ -354,7 +354,8 @@ AC_CACHE_CHECK([if your system has IPv6 support], [ac_cv_ip6], [ + AC_TRY_RUN([ + #include <sys/types.h> + #include <sys/socket.h> +-int main() { ++#include <stdlib.h> ++int main(void) { + int s = socket(AF_INET6, SOCK_STREAM, 0); + exit(0); /* We only check if the code compiles, that's enough. We can deal with missing runtime IPv6 */ + } + |