Flang Fortran compiler added.

docs/markdown/Reference-tables.md

@@ -13,6 +13,7 @@ These are return values of the `get_id` (Compiler family) and
 | clang     | The Clang compiler               | gcc                            |
 | clang-cl  | The Clang compiler (MSVC compatible driver) | msvc                |
 | dmd       | D lang reference compiler        |                                |
+| flang     | Flang Fortran compiler           |                                |
 | g95       | The G95 Fortran compiler         |                                |
 | gcc       | The GNU Compiler Collection      | gcc                            |
 | intel     | Intel compiler                   | msvc on windows, otherwise gcc |

mesonbuild/compilers/__init__.py

@@ -62,6 +62,7 @@ __all__ = [
     'GnuDCompiler',
     'GnuFortranCompiler',
     'ElbrusFortranCompiler',
+    'FlangFortranCompiler',
     'GnuObjCCompiler',
     'GnuObjCPPCompiler',
     'IntelCompiler',
@@ -153,6 +154,7 @@ from .fortran import (
     G95FortranCompiler,
     GnuFortranCompiler,
     ElbrusFortranCompiler,
+    FlangFortranCompiler,
     IntelFortranCompiler,
     NAGFortranCompiler,
     Open64FortranCompiler,

mesonbuild/compilers/compilers.py

@@ -1311,6 +1311,8 @@ class CompilerType(enum.Enum):
 
     PGI_STANDARD = 50
 
+    FLANG_STANDARD = 60
+
     @property
     def is_standard_compiler(self):
         return self.name in ('GCC_STANDARD', 'CLANG_STANDARD', 'ICC_STANDARD')
@@ -1619,6 +1621,27 @@ class PGICompiler:
         def openmp_flags(self):
             return ['-fopenmp']
 
+
+class FlangCompiler:
+    def __init__(self, compiler_type):
+        self.id = 'flang'
+        self.compiler_type = compiler_type
+
+        default_warn_args = ['-Minform=inform']
+        self.warn_args = {'1': default_warn_args,
+                          '2': default_warn_args,
+                          '3': default_warn_args}
+
+        def get_module_incdir_args(self):
+            return ('-module', )
+
+        def get_no_warn_args(self):
+            return ['-silent']
+
+        def openmp_flags(self):
+            return ['-fopenmp']
+
+
 class ElbrusCompiler(GnuCompiler):
     # Elbrus compiler is nearly like GCC, but does not support
     # PCH, LTO, sanitizers and color output as of version 1.21.x.

mesonbuild/compilers/fortran.py

@@ -22,6 +22,7 @@ from .compilers import (
     clike_debug_args,
     Compiler,
     GnuCompiler,
+    FlangCompiler,
     ElbrusCompiler,
     IntelCompiler,
     PGICompiler
@@ -382,6 +383,12 @@ class PGIFortranCompiler(FortranCompiler):
         return val
 
 
+class FlangFortranCompiler(FortranCompiler):
+    def __init__(self, exelist, version, is_cross, exe_wrapper=None, **kwags):
+        FortranCompiler.__init__(self, exelist, version, is_cross, exe_wrapper, **kwags)
+        FlangCompiler.__init__(self, CompilerType.FLANG_STANDARD)
+
+
 class Open64FortranCompiler(FortranCompiler):
     def __init__(self, exelist, version, is_cross, exe_wrapper=None, **kwags):
         FortranCompiler.__init__(self, exelist, version, is_cross, exe_wrapper, **kwags)

mesonbuild/environment.py

@@ -44,6 +44,7 @@ from .compilers import (
     ClangObjCPPCompiler,
     ClangClCCompiler,
     ClangClCPPCompiler,
+    FlangFortranCompiler,
     G95FortranCompiler,
     GnuCCompiler,
     GnuCPPCompiler,
@@ -782,6 +783,9 @@ class Environment:
                 if 'PGI Compilers' in out:
                     return PGIFortranCompiler(compiler, version, is_cross, exe_wrap, full_version=full_version)
 
+                if 'flang' in out or 'clang' in out:
+                    return FlangFortranCompiler(compiler, version, is_cross, exe_wrap, full_version=full_version)
+
                 if 'Open64 Compiler Suite' in err:
                     return Open64FortranCompiler(compiler, version, is_cross, exe_wrap, full_version=full_version)