Add PathScale shared library flags on Linux

We add platform-specific compiler information files

  Platform/Linux-PathScale-<lang>.cmake

to enable -fPIC and -shared flags for shared libraries.

Modules/Platform/Linux-PathScale-C.cmake

@@ -0,0 +1,2 @@
+include(Platform/Linux-PathScale)
+__linux_compiler_pathscale(C)

Modules/Platform/Linux-PathScale-CXX.cmake

@@ -0,0 +1,2 @@
+include(Platform/Linux-PathScale)
+__linux_compiler_pathscale(CXX)

Modules/Platform/Linux-PathScale-Fortran.cmake

@@ -0,0 +1,2 @@
+include(Platform/Linux-PathScale)
+__linux_compiler_pathscale(Fortran)

Modules/Platform/Linux-PathScale.cmake

@@ -0,0 +1,25 @@
+
+#=============================================================================
+# Copyright 2002-2010 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distributed this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+# This module is shared by multiple languages; use include blocker.
+if(__LINUX_COMPILER_PATHSCALE)
+  return()
+endif()
+set(__LINUX_COMPILER_PATHSCALE 1)
+
+macro(__linux_compiler_pathscale lang)
+  # Shared library compile and link flags.
+  set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC")
+  set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared")
+endmacro()