ENH: Identify Fortran compilers with fixed format

This enhances the Fortran compiler id detection by using a source that
can compile either as free or fixed format.  As long as the compiler
knows it should preprocess the source file (.F) the identification can
work.  Even free-format compilers may try fixed-format parsing if the
user specifies certain flags, so we must support both.

Modules/CMakeDetermineFortranCompiler.cmake

@@ -120,7 +120,7 @@ IF(NOT CMAKE_Fortran_COMPILER_ID_RUN)
   # Try to identify the compiler.
   SET(CMAKE_Fortran_COMPILER_ID)
   INCLUDE(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake)
-  CMAKE_DETERMINE_COMPILER_ID(Fortran FFLAGS CMakeFortranCompilerId.F90)
+  CMAKE_DETERMINE_COMPILER_ID(Fortran FFLAGS CMakeFortranCompilerId.F)
 
   # Fall back to old is-GNU test.
   IF(NOT CMAKE_Fortran_COMPILER_ID)

Modules/CMakeFortranCompilerId.F.in

@@ -0,0 +1,92 @@
+      PROGRAM CMakeFortranCompilerId
+#if 0
+! Identify the compiler
+#endif
+#if defined(__INTEL_COMPILER) || defined(__ICC)
+        PRINT *, 'INFO:compiler[Intel]'
+#elif defined(__SUNPRO_F90) || defined(__SUNPRO_F95)
+        PRINT *, 'INFO:compiler[SunPro]'
+#elif defined(__GNUC__)
+        PRINT *, 'INFO:compiler[GNU]'
+#elif defined(__IBM__) || defined(__IBMC__)
+        PRINT *, 'INFO:compiler[VisualAge]'
+#elif defined(__PGI)
+        PRINT *, 'INFO:compiler[PGI]'
+#elif defined(_COMPILER_VERSION)
+        PRINT *, 'INFO:compiler[MIPSpro]'
+#       if 0
+!       This compiler is either not known or is too old to define an
+!       identification macro.  Try to identify the platform and guess that
+!       it is the native compiler.
+#       endif
+#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__)
+        PRINT *, 'INFO:compiler[VisualAge]'
+#elif defined(__sgi) || defined(__sgi__) || defined(_SGI)
+        PRINT *, 'INFO:compiler[MIPSpro]'
+#elif defined(__hpux) || defined(__hpux__)
+        PRINT *, 'INFO:compiler[HP]'
+#else
+        PRINT *, 'INFO:compiler[]'
+#endif
+
+#if 0
+! Identify the platform
+#endif
+#if defined(__linux) || defined(__linux__) || defined(linux)
+        PRINT *, 'INFO:platform[Linux]'
+#elif defined(__CYGWIN__)
+        PRINT *, 'INFO:platform[Cygwin]'
+#elif defined(__MINGW32__)
+        PRINT *, 'INFO:platform[MinGW]'
+#elif defined(__APPLE__)
+        PRINT *, 'INFO:platform[Darwin]'
+#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
+        PRINT *, 'INFO:platform[Windows]'
+#elif defined(__FreeBSD__) || defined(__FreeBSD)
+        PRINT *, 'INFO:platform[FreeBSD]'
+#elif defined(__NetBSD__) || defined(__NetBSD)
+        PRINT *, 'INFO:platform[NetBSD]'
+#elif defined(__OpenBSD__) || defined(__OPENBSD)
+        PRINT *, 'INFO:platform[OpenBSD]'
+#elif defined(__sun) || defined(sun)
+        PRINT *, 'INFO:platform[SunOS]'
+#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__)
+        PRINT *, 'INFO:platform[AIX]'
+#elif defined(__sgi) || defined(__sgi__) || defined(_SGI)
+        PRINT *, 'INFO:platform[IRIX]'
+#elif defined(__hpux) || defined(__hpux__)
+        PRINT *, 'INFO:platform[HP-UX]'
+#elif defined(__HAIKU) || defined(__HAIKU__) || defined(_HAIKU)
+        PRINT *, 'INFO:platform[Haiku]'
+#       if 0
+!       Haiku also defines __BEOS__ so we must
+!       put it prior to the check for __BEOS__
+#       endif
+#elif defined(__BeOS) || defined(__BEOS__) || defined(_BEOS)
+        PRINT *, 'INFO:platform[BeOS]'
+#elif defined(__QNX__) || defined(__QNXNTO__)
+        PRINT *, 'INFO:platform[QNX]'
+#elif defined(__tru64) || defined(_tru64) || defined(__TRU64__)
+        PRINT *, 'INFO:platform[Tru64]'
+#elif defined(__riscos) || defined(__riscos__)
+        PRINT *, 'INFO:platform[RISCos]'
+#elif defined(__sinix) || defined(__sinix__) || defined(__SINIX__)
+        PRINT *, 'INFO:platform[SINIX]'
+#elif defined(__UNIX_SV__)
+        PRINT *, 'INFO:platform[UNIX_SV]'
+#elif defined(__bsdos__)
+        PRINT *, 'INFO:platform[BSDOS]'
+#elif defined(_MPRAS) || defined(MPRAS)
+        PRINT *, 'INFO:platform[MP-RAS]'
+#elif defined(__osf) || defined(__osf__)
+        PRINT *, 'INFO:platform[OSF1]'
+#elif defined(_SCO_SV) || defined(SCO_SV) || defined(sco_sv)
+        PRINT *, 'INFO:platform[SCO_SV]'
+#elif defined(__ultrix) || defined(__ultrix__) || defined(_ULTRIX)
+        PRINT *, 'INFO:platform[ULTRIX]'
+#elif defined(__XENIX__) || defined(_XENIX) || defined(XENIX)
+        PRINT *, 'INFO:platform[Xenix]'
+#else
+        PRINT *, 'INFO:platform[]'
+#endif
+      END

Modules/CMakeFortranCompilerId.F90.in

@@ -1,84 +0,0 @@
-PROGRAM CMakeFortranCompilerId
-!     Identify the compiler
-#if defined(__INTEL_COMPILER) || defined(__ICC)
-   PRINT *, 'INFO:compiler[Intel]'
-#elif defined(__SUNPRO_F90) || defined(__SUNPRO_F95)
-   PRINT *, 'INFO:compiler[SunPro]'
-#elif defined(__GNUC__)
-   PRINT *, 'INFO:compiler[GNU]'
-#elif defined(__IBM__) || defined(__IBMC__)
-   PRINT *, 'INFO:compiler[VisualAge]'
-#elif defined(__PGI)
-   PRINT *, 'INFO:compiler[PGI]'
-#elif defined(_COMPILER_VERSION)
-   PRINT *, 'INFO:compiler[MIPSpro]'
-!     This compiler is either not known or is too old to define an
-!     identification macro.  Try to identify the platform and guess that
-!     it is the native compiler.
-#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__)
-   PRINT *, 'INFO:compiler[VisualAge]'
-#elif defined(__sgi) || defined(__sgi__) || defined(_SGI)
-   PRINT *, 'INFO:compiler[MIPSpro]'
-#elif defined(__hpux) || defined(__hpux__)
-   PRINT *, 'INFO:compiler[HP]'
-#else
-   PRINT *, 'INFO:compiler[]'
-#endif
-
-!     Identify the platform
-#if defined(__linux) || defined(__linux__) || defined(linux)
-   PRINT *, 'INFO:platform[Linux]'
-#elif defined(__CYGWIN__)
-   PRINT *, 'INFO:platform[Cygwin]'
-#elif defined(__MINGW32__)
-   PRINT *, 'INFO:platform[MinGW]'
-#elif defined(__APPLE__)
-   PRINT *, 'INFO:platform[Darwin]'
-#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
-   PRINT *, 'INFO:platform[Windows]'
-#elif defined(__FreeBSD__) || defined(__FreeBSD)
-   PRINT *, 'INFO:platform[FreeBSD]'
-#elif defined(__NetBSD__) || defined(__NetBSD)
-   PRINT *, 'INFO:platform[NetBSD]'
-#elif defined(__OpenBSD__) || defined(__OPENBSD)
-   PRINT *, 'INFO:platform[OpenBSD]'
-#elif defined(__sun) || defined(sun)
-   PRINT *, 'INFO:platform[SunOS]'
-#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__)
-   PRINT *, 'INFO:platform[AIX]'
-#elif defined(__sgi) || defined(__sgi__) || defined(_SGI)
-   PRINT *, 'INFO:platform[IRIX]'
-#elif defined(__hpux) || defined(__hpux__)
-   PRINT *, 'INFO:platform[HP-UX]'
-#elif defined(__HAIKU) || defined(__HAIKU__) || defined(_HAIKU)
-   PRINT *, 'INFO:platform[Haiku]'
-! Haiku also defines __BEOS__ so we must 
-! put it prior to the check for __BEOS__
-#elif defined(__BeOS) || defined(__BEOS__) || defined(_BEOS)
-   PRINT *, 'INFO:platform[BeOS]'
-#elif defined(__QNX__) || defined(__QNXNTO__)
-   PRINT *, 'INFO:platform[QNX]'
-#elif defined(__tru64) || defined(_tru64) || defined(__TRU64__)
-   PRINT *, 'INFO:platform[Tru64]'
-#elif defined(__riscos) || defined(__riscos__)
-   PRINT *, 'INFO:platform[RISCos]'
-#elif defined(__sinix) || defined(__sinix__) || defined(__SINIX__)
-   PRINT *, 'INFO:platform[SINIX]'
-#elif defined(__UNIX_SV__)
-   PRINT *, 'INFO:platform[UNIX_SV]'
-#elif defined(__bsdos__)
-   PRINT *, 'INFO:platform[BSDOS]'
-#elif defined(_MPRAS) || defined(MPRAS)
-   PRINT *, 'INFO:platform[MP-RAS]'
-#elif defined(__osf) || defined(__osf__)
-   PRINT *, 'INFO:platform[OSF1]'
-#elif defined(_SCO_SV) || defined(SCO_SV) || defined(sco_sv)
-   PRINT *, 'INFO:platform[SCO_SV]'
-#elif defined(__ultrix) || defined(__ultrix__) || defined(_ULTRIX)
-   PRINT *, 'INFO:platform[ULTRIX]'
-#elif defined(__XENIX__) || defined(_XENIX) || defined(XENIX)
-   PRINT *, 'INFO:platform[Xenix]'
-#else
-   PRINT *, 'INFO:platform[]'
-#endif
-END PROGRAM