python: use CFLAGS=-fp-model=strict with %oneapi (#23575)

var/spack/repos/builtin/packages/python/package.py

@@ -383,6 +383,7 @@ def flag_handler(self, name, flags):
     def configure_args(self):
         spec = self.spec
         config_args = []
+        cflags = []
 
         # setup.py needs to be able to read the CPPFLAGS and LDFLAGS
         # as it scans for the library and headers to build
@@ -444,7 +445,7 @@ def configure_args(self):
             config_args.append('--without-ensurepip')
 
         if '+pic' in spec:
-            config_args.append('CFLAGS={0}'.format(self.compiler.cc_pic_flag))
+            cflags.append(self.compiler.cc_pic_flag)
 
         if '+ssl' in spec:
             if spec.satisfies('@3.7:'):
@@ -479,6 +480,12 @@ def configure_args(self):
         if spec.satisfies('@3.2: +sqlite3'):
             config_args.append('--enable-loadable-sqlite-extensions')
 
+        if spec.satisfies('%oneapi'):
+            cflags.append('-fp-model=strict')
+
+        if cflags:
+            config_args.append('CFLAGS={0}'.format(' '.join(cflags)))
+
         return config_args
 
     @run_after('install')