Add extra logic for C std flags on PGI, XL, and Cray (#11635)

lib/spack/spack/compilers/cce.py

@@ -3,10 +3,11 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import spack.compiler
+from spack.compiler import Compiler, UnsupportedCompilerFlag
+from spack.version import ver
 
 
-class Cce(spack.compiler.Compiler):
+class Cce(Compiler):
     """Cray compiler environment compiler."""
     # Subclasses use possible names of C compiler
     cc_names = ['cc']
@@ -44,7 +45,23 @@ def cxx11_flag(self):
 
     @property
     def c99_flag(self):
-        return "-h c99"
+        if self.version >= ver('8.4'):
+            return '-h stc=c99,noconform,gnu'
+        if self.version >= ver('8.1'):
+            return '-h c99,noconform,gnu'
+        raise UnsupportedCompilerFlag(self,
+                                      'the C99 standard',
+                                      'c99_flag',
+                                      '< 8.1')
+
+    @property
+    def c11_flag(self):
+        if self.version >= ver('8.5'):
+            return '-h std=c11,noconform,gnu'
+        raise UnsupportedCompilerFlag(self,
+                                      'the C11 standard',
+                                      'c11_flag',
+                                      '< 8.5')
 
     @property
     def pic_flag(self):

lib/spack/spack/compilers/pgi.py

@@ -3,10 +3,11 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import spack.compiler
+from spack.compiler import Compiler, UnsupportedCompilerFlag
+from spack.version import ver
 
 
-class Pgi(spack.compiler.Compiler):
+class Pgi(Compiler):
     # Subclasses use possible names of C compiler
     cc_names = ['pgcc']
 
@@ -46,3 +47,21 @@ def cxx11_flag(self):
     @property
     def pic_flag(self):
         return "-fpic"
+
+    @property
+    def c99_flag(self):
+        if self.version >= ver('12.10'):
+            return '-c99'
+        raise UnsupportedCompilerFlag(self,
+                                      'the C99 standard',
+                                      'c99_flag',
+                                      '< 12.10')
+
+    @property
+    def c11_flag(self):
+        if self.version >= ver('15.3'):
+            return '-c11'
+        raise UnsupportedCompilerFlag(self,
+                                      'the C11 standard',
+                                      'c11_flag',
+                                      '< 15.3')

lib/spack/spack/compilers/xl.py

@@ -45,11 +45,25 @@ def cxx11_flag(self):
 
     @property
     def c99_flag(self):
-        return '-std=c99'
+        if self.version >= ver('13.1.1'):
+            return '-std=gnu99'
+        if self.version >= ver('10.1'):
+            return '-qlanglvl=extc99'
+        raise UnsupportedCompilerFlag(self,
+                                      'the C99 standard',
+                                      'c99_flag',
+                                      '< 10.1')
 
     @property
     def c11_flag(self):
-        return '-std=c11'
+        if self.version >= ver('13.1.2'):
+            return '-std=gnu11'
+        if self.version >= ver('12.1'):
+            return '-qlanglvl=extc1x'
+        raise UnsupportedCompilerFlag(self,
+                                      'the C11 standard',
+                                      'c11_flag',
+                                      '< 12.1')
 
     @property
     def pic_flag(self):