From: Rouven Czerwinski <[email protected]>

Disable -Werror using OECMAKE_C_FLAGS on x86-64. This ensures that json-c can
build on newer distributions where the host compiler is new enough to treat
implicit fallthrough warnings as errors:
  | NOTE: VERBOSE=1 cmake --build 
/…/work/x86_64-linux/json-c-native/0.15-r0/build --target all --
  | [1/34] 
/…/work/x86_64-linux/json-c-native/0.15-r0/recipe-sysroot-native/usr/bin/ice/gcc
 -D_GNU_SOURCE -Djson_c_EXPORTS 
-I/…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15 
-I/…/work/x86_64-linux/json-c-native/0.15-r0/build 
-isystem/…/work/x86_64-linux/j
  son-c-native/0.15-r0/recipe-sysroot-native/usr/include -O2 -pipe 
-ffunction-sections -fdata-sections -Werror -Wall -Wcast-qual 
-Wno-error=deprecated-declarations -Wextra -Wwrite-strings 
-Wno-unused-parameter -Wstrict-prototypes -g -fPIC -D_REENTRANT -MD -MT 
CMakeFiles/json-c.dir/linkhash.c.o -MF CMakeFiles/json-c.dir/linkhash.c.o.d -o 
CMakeFiles/json-c.dir/linkhash.c.o -c 
/…/work/x86_64-linux/json-c-native/0.15-r0/json-c
  -0.15/linkhash.c
  | FAILED: CMakeFiles/json-c.dir/linkhash.c.o
  | 
/…/work/x86_64-linux/json-c-native/0.15-r0/recipe-sysroot-native/usr/bin/ice/gcc
 -D_GNU_SOURCE -Djson_c_EXPORTS 
-I/…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15 
-I/…/work/x86_64-linux/json-c-native/0.15-r0/build 
-isystem/…/work/x86_64-linux/json-c-n
  ative/0.15-r0/recipe-sysroot-native/usr/include -O2 -pipe -ffunction-sections 
-fdata-sections -Werror -Wall -Wcast-qual -Wno-error=deprecated-declarations 
-Wextra -Wwrite-strings -Wno-unused-parameter -Wstrict-prototypes -g -fPIC 
-D_REENTRANT -MD -MT CMakeFiles/json-c.dir/linkhash.c.o -MF 
CMakeFiles/json-c.dir/linkhash.c.o.d -o CMakeFiles/json-c.dir/linkhash.c.o -c 
/…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/l
  inkhash.c
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c: In 
function 'hashlittle':
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:367:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:368:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:372:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:373:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:376:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:377:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:380:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:381:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:383:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:384:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:420:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:421:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:421:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:422:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:422:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:423:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:423:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:424:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:424:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:425:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:425:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:426:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:426:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:427:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:427:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:428:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:428:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:429:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:429:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:430:3: 
note: here
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:430:13: 
error: this statement may fall through [-Werror=implicit-fallthrough=]
  | /…/work/x86_64-linux/json-c-native/0.15-r0/json-c-0.15/linkhash.c:431:3: 
note: here
  | cc1: all warnings being treated as errors

Passing -Wno-error x86-64 is the minimal invasive fix for older kirkstone
releases.

Signed-off-by: Rouven Czerwinski <[email protected]>
---
 meta/recipes-devtools/json-c/json-c_0.15.bb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/meta/recipes-devtools/json-c/json-c_0.15.bb 
b/meta/recipes-devtools/json-c/json-c_0.15.bb
index 7cbed55b3b..749eb078f8 100644
--- a/meta/recipes-devtools/json-c/json-c_0.15.bb
+++ b/meta/recipes-devtools/json-c/json-c_0.15.bb
@@ -18,6 +18,8 @@ RPROVIDES:${PN} = "libjson"
 
 inherit cmake ptest
 
+OECMAKE_C_FLAGS:append:x86-64 = " -Wno-error"
+
 do_install_ptest() {
     install -d ${D}/${PTEST_PATH}/tests
     install ${B}/tests/test* ${D}/${PTEST_PATH}/tests
-- 
2.39.2

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