From c10d52595688e2e2c21637461912fb8d621c790a Mon Sep 17 00:00:00 2001
From: eugeneswalker <38933153+eugeneswalker@users.noreply.github.com>
Date: Sat, 29 Oct 2022 05:13:54 -0700
Subject: json-c %oneapi: add -Wno-error=implicit-function-declaration (#33585)

---
 var/spack/repos/builtin/packages/json-c/package.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/var/spack/repos/builtin/packages/json-c/package.py b/var/spack/repos/builtin/packages/json-c/package.py
index a62e0323ea..d13bddecb8 100644
--- a/var/spack/repos/builtin/packages/json-c/package.py
+++ b/var/spack/repos/builtin/packages/json-c/package.py
@@ -42,6 +42,13 @@ class JsonC(CMakePackage, AutotoolsPackage):
     def patch(self):
         filter_file("-Werror", "", "CMakeLists.txt")
 
+    def flag_handler(self, name, flags):
+        iflags = []
+        if name == "cflags":
+            if self.spec.satisfies("%oneapi"):
+                iflags.append("-Wno-error=implicit-function-declaration")
+        return (iflags, None, None)
+
     @run_after("install")
     def darwin_fix(self):
         # The shared library is not installed correctly on Darwin; fix this
-- 
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