db: ignore implicit-int and implicit-function-declaration issues fatal with gcc-14

* many configure tests (which might not fail before) are failing with gcc-14:
  # grep implicit build/config.log
  conftest.c:47:1: error: return type defaults to 'int' [-Wimplicit-int]
  conftest.c:47:1: error: return type defaults to 'int' [-Wimplicit-int]
  conftest.c:47:1: error: return type defaults to 'int' [-Wimplicit-int]
  conftest.c:47:1: error: return type defaults to 'int' [-Wimplicit-int]
  conftest.c:47:1: error: return type defaults to 'int' [-Wimplicit-int]
  conftest.c:47:1: error: return type defaults to 'int' [-Wimplicit-int]
  conftest.c:50:17: error: implicit declaration of function 'exit' [-Wimplicit-function-declaration]
  conftest.c:50:17: warning: incompatible implicit declaration of built-in function 'exit' [-Wbuiltin-declaration-mismatch]
  conftest.c:53:9: error: implicit declaration of function 'msem_init' [-Wimplicit-function-declaration]
  conftest.c:54:9: error: implicit declaration of function 'msem_lock' [-Wimplicit-function-declaration]
  conftest.c:55:9: error: implicit declaration of function 'msem_unlock' [-Wimplicit-function-declaration]
  conftest.c:56:9: error: implicit declaration of function 'exit' [-Wimplicit-function-declaration]
  conftest.c:56:9: warning: incompatible implicit declaration of built-in function 'exit' [-Wbuiltin-declaration-mismatch]
  conftest.c:50:9: error: implicit declaration of function '_spin_lock_try' [-Wimplicit-function-declaration]
  conftest.c:51:9: error: implicit declaration of function '_spin_unlock' [-Wimplicit-function-declaration]

* I have noticed this on db-native build on host with gcc-14
  where it caused fatal do_configure error:
  http://errors.yoctoproject.org/Errors/Details/784164/

  checking for mutexes... UNIX/fcntl
  configure: error: Support for FCNTL mutexes was removed in BDB 4.8.

  the config.log confirms it's because implicit-int:

  configure:22798: checking for mutexes
  configure:22925: gcc  -o conftest -isystem/OE/build/oe-core/tmp-glibc/work/x86_64-linux/db-native/5.3.28/recipe-sysroot-native/usr/include -O2 -pipe  -isystem/OE/build/oe-core/tmp-glibc/work/x86_64-linux/db-native/5.3.28/recipe-sysroot-native/usr/include -D_GNU_SOURCE -D_REENTRANT -L/OE/build/oe-core/tmp-glibc/work/x86_64-linux/db-native/5.3.28/recipe-sysroot-native/usr/lib                         -L/OE/build/oe-core/tmp-glibc/work/x86_64-linux/db-native/5.3.28/recipe-sysroot-native/lib                         -Wl,--enable-new-dtags                         -Wl,-rpath-link,/OE/build/oe-core/tmp-glibc/work/x86_64-linux/db-native/5.3.28/recipe-sysroot-native/usr/lib                         -Wl,-rpath-link,/OE/build/oe-core/tmp-glibc/work/x86_64-linux/db-native/5.3.28/recipe-sysroot-native/lib                         -Wl,-rpath,/OE/build/oe-core/tmp-glibc/work/x86_64-linux/db-native/5.3.28/recipe-sysroot-native/usr/lib                         -Wl,-rpath,/OE/build/oe-core/tmp-glibc/work/x86_64-linux/db-native/5.3.28/recipe-sysroot-native/lib                         -Wl,-O1 conftest.c  -lpthread >&5
  conftest.c:47:1: error: return type defaults to 'int' [-Wimplicit-int]
     47 | main() {
        | ^~~~
  configure:22925: $? = 1
  configure: program exited with status 1

* comparing target db with and without this change shows following diff
  in log.do_configure:

  db $ diff 5.3.28*/temp/log.do_configure
  268c268
  < checking for mutexes... POSIX/pthreads/library
  ---
  > checking for mutexes... POSIX/pthreads/library/x86_64/gcc-assembly
  271c271
  < checking for atomic operations... no
  ---
  > checking for atomic operations... x86/gcc-assembly

(From OE-Core rev: 4d3ce333c10fadf746b6d8b55a88777c97e11ffa)

Signed-off-by: Martin Jansa <martin.jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 6108da955e7c553247ff5356cf1c990b3d334edf)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/meta/recipes-support/db/db_5.3.28.bb b/meta/recipes-support/db/db_5.3.28.bb
index a99d5cea62..a7d061e0da 100644
--- a/meta/recipes-support/db/db_5.3.28.bb
+++ b/meta/recipes-support/db/db_5.3.28.bb
@@ -116,3 +116,7 @@ INSANE_SKIP:${PN} = "dev-so"
 INSANE_SKIP:${PN}-cxx = "dev-so"
 
 BBCLASSEXTEND = "native nativesdk"
+
+# many configure tests are failing with gcc-14
+CFLAGS += "-Wno-error=implicit-int -Wno-error=implicit-function-declaration"
+BUILD_CFLAGS += "-Wno-error=implicit-int -Wno-error=implicit-function-declaration"