CONFIG: adjust csh compiler settings to be closer to sh version

- makes it easier to ensure consistent setups

etc/config.csh/compiler

+#----------------------------------*-sh-*--------------------------------------
+# =========                 |
+# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+#  \\    /   O peration     |
+#   \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+#    \\/     M anipulation  | Copyright (C) 2016 OpenCFD Ltd.
+#------------------------------------------------------------------------------
+# License
+#     This file is part of OpenFOAM.
+#
+#     OpenFOAM is free software: you can redistribute it and/or modify it
+#     under the terms of the GNU General Public License as published by
+#     the Free Software Foundation, either version 3 of the License, or
+#     (at your option) any later version.
+#
+#     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+#     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+#     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+#     for more details.
+#
+#     You should have received a copy of the GNU General Public License
+#     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+#
+# File
+#     etc/config.csh/compiler
+#
+# Description
+#     Startup file for custom compiler versions for OpenFOAM
+#     Sourced from OpenFOAM-<VERSION>/etc/config.csh/settings
+#
+#------------------------------------------------------------------------------
+
+switch ("$WM_COMPILER_TYPE")
+case OpenFOAM:
+case ThirdParty:
+    # Default versions of GMP, MPFR and MPC, override as necessary
+    set gmp_version=gmp-system
+    set mpfr_version=mpfr-system
+    set mpc_version=mpc-system
+
+    switch ("$WM_COMPILER")
+    case Gcc:
+    case Gcc48:
+        set gcc_version=gcc-4.8.5
+        breaksw
+    case Gcc45:
+        set gcc_version=gcc-4.5.4
+        breaksw
+    case Gcc46:
+        set gcc_version=gcc-4.6.4
+        breaksw
+    case Gcc47:
+        set gcc_version=gcc-4.7.4
+        breaksw
+    case Gcc49:
+        set gcc_version=gcc-4.9.3
+        breaksw
+    case Gcc51:
+        set gcc_version=gcc-5.1.0
+        breaksw
+    case Gcc52:
+        set gcc_version=gcc-5.2.0
+        breaksw
+    case Gcc53:
+        set gcc_version=gcc-5.3.0
+        breaksw
+    case Gcc54:
+        set gcc_version=gcc-5.4.0
+        breaksw
+    case Gcc61:
+        set gcc_version=gcc-6.1.0
+        breaksw
+    case Clang:
+        # Using clang - not gcc
+        setenv WM_CC 'clang'
+        setenv WM_CXX 'clang++'
+        set clang_version=llvm-3.7.0
+        # set clang_version=llvm-3.8.0
+        breaksw
+    default:
+        echo
+        echo "Warning in $WM_PROJECT_DIR/etc/config.csh/compiler:"
+        echo "    Unknown OpenFOAM compiler type '$WM_COMPILER'"
+        echo "    Please check your settings"
+        echo
+        breaksw
+    endsw
+endsw
+
+#------------------------------------------------------------------------------

etc/config.csh/settings

@@ -213,65 +213,21 @@ if ( ! $?WM_COMPILER_TYPE ) then
     echo "    WM_COMPILER_TYPE not set, using '$WM_COMPILER_TYPE'"
 endif
 
+# Load configured compiler versions, regardless of the compiler type
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+_foamSource `$WM_PROJECT_DIR/bin/foamEtcFile config.csh/compiler`
+
 switch ("$WM_COMPILER_TYPE")
+case system:
+    # Use system compiler
+    breaksw
+
 case OpenFOAM:
 case ThirdParty:
-    # Default versions of GMP, MPFR and MPC, overide as necessary
-    set gmp_version=gmp-system
-    set mpfr_version=mpfr-system
-    set mpc_version=mpc-system
-    switch ("$WM_COMPILER")
-    case Gcc:
-    case Gcc48:
-        set gcc_version=gcc-4.8.5
-        breaksw
-    case Gcc45:
-        set gcc_version=gcc-4.5.4
-        breaksw
-    case Gcc46:
-        set gcc_version=gcc-4.6.4
-        breaksw
-    case Gcc47:
-        set gcc_version=gcc-4.7.4
-        breaksw
-    case Gcc49:
-        set gcc_version=gcc-4.9.3
-        breaksw
-    case Gcc51:
-        set gcc_version=gcc-5.1.0
-        breaksw
-    case Gcc52:
-        set gcc_version=gcc-5.2.0
-        breaksw
-    case Gcc53:
-        set gcc_version=gcc-5.3.0
-        breaksw
-    case Gcc54:
-        set gcc_version=gcc-5.4.0
-        breaksw
-    case Gcc61:
-        set gcc_version=gcc-6.1.0
-        breaksw
-    case Clang:
-        # Using clang - not gcc
-        setenv WM_CC 'clang'
-        setenv WM_CXX 'clang++'
-        set clang_version=llvm-3.7.0
-        # set clang_version=llvm-3.8.0
-        breaksw
-    default:
-        echo
-        echo "Warning in $WM_PROJECT_DIR/etc/config.csh/settings:"
-        echo "    Unknown OpenFOAM compiler type '$WM_COMPILER'"
-        echo "    Please check your settings"
-        echo
-        breaksw
-    endsw
-
-    # Optional configuration tweaks:
-    _foamSource `$WM_PROJECT_DIR/bin/foamEtcFile config.csh/compiler`
-
     if ( $?gcc_version ) then
+        if ( ! $?gmp_version  ) set gmp_version=gmp-system
+        if ( ! $?mpfr_version ) set mpfr_version=mpfr-system
+        if ( ! $?mpc_version  ) set mpc_version=mpc-system
         set gccDir=$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER_ARCH/$gcc_version
         set gmpDir=$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER_ARCH/$gmp_version
         set mpfrDir=$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER_ARCH/$mpfr_version
@@ -333,14 +289,15 @@ case ThirdParty:
 
         _foamAddMan     $clangDir/man
         _foamAddPath    $clangDir/bin
+
+        if ($?FOAM_VERBOSE && $?prompt) then
+            echo "Using ThirdParty compiler"
+            echo "    ${clangDir:t}"
+        endif
     endif
     unset clang_version clangDir
     breaksw
 
-case system:
-    # Use system compiler
-    breaksw
-
 default:
     echo "Warn: WM_COMPILER_TYPE='$WM_COMPILER_TYPE' is unsupported"
     echo "   treating as 'system' instead"

etc/config.sh/compiler

@@ -86,3 +86,5 @@ OpenFOAM | ThirdParty)
     ;;
 
 esac
+
+#------------------------------------------------------------------------------

etc/config.sh/settings

@@ -214,8 +214,10 @@ fi
 _foamSource `$WM_PROJECT_DIR/bin/foamEtcFile config.sh/compiler`
 
 case "$WM_COMPILER_TYPE" in
+system)
+    # Use system compiler
+    ;;
 OpenFOAM | ThirdParty)
-
     if [ -n "$gcc_version" ]
     then
         gccDir=$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER_ARCH/$gcc_version
@@ -284,12 +286,15 @@ OpenFOAM | ThirdParty)
 
         _foamAddMan     $clangDir/share/man
         _foamAddPath    $clangDir/bin
+
+        if [ "$FOAM_VERBOSE" -a "$PS1" ]
+        then
+            echo "Using ThirdParty compiler"
+            echo "    ${clangDir##*/}"
+        fi
     fi
     unset clang_version clangDir
     ;;
-system)
-    # Use system compiler
-    ;;
 *)
     echo "Warn: WM_COMPILER_TYPE='$WM_COMPILER_TYPE' is unsupported" 1>&2
     echo "   treating as 'system' instead" 1>&2