[LyX/2.3.0-alpha1-x] Cmake build: Correct suffixing on non-gcc-compilers

[Scott Kostyshak]

commit 5c7df3cc3b286e3737630f361babdb0f74dd7ee6
Author: Kornel Benko <kor...@lyx.org>
Date:   Tue May 2 08:16:00 2017 +0200

    Cmake build: Correct suffixing on non-gcc-compilers
    
    If the value LYX_PROGRAM_SUFFIX is not handled, we have to use
    LYX_PACKAGE_SUFFIX.
    The naming 'PACKAGE' in our sources is misleading, as it is used
    for the name of the debian/rpm packages as well.
    
    (cherry picked from commit 0935f94f0d448c1a9b521e4825b30b94fe0521ff)
---
 CMakeLists.txt |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f9fe759..250e26b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -463,14 +463,22 @@ else()
   set(SYSTEM_DATADIR "${CMAKE_INSTALL_PREFIX}")
 endif()
 
-# The define below allows lyx-executable to find its default configuration 
files
+if(CMAKE_COMPILER_IS_GNUCXX)
+  message(STATUS "CMAKE_COMPILER_IS_GNUCXX = ${CMAKE_COMPILER_IS_GNUCXX}")
+  set(suffixing ${LYX_PROGRAM_SUFFIX})
+else()
+  # Not a GCC compiler, programs do not have a suffix
+  set(suffixing ${LYX_PACKAGE_SUFFIX})
+endif()
+
+# The define PACKAGE below allows lyx-executable to find its default 
configuration files
 # see routines
 #    Package::messages_file()
 #    get_default_user_support_dir()
 #    relative_system_support_dir()
 # in src/support/Package.cpp
 #
-if(LYX_PROGRAM_SUFFIX)
+if(suffixing)
        set(PACKAGE ${PACKAGE_BASE}${LYX_INSTALL_SUFFIX})
 else()
        set(PACKAGE ${PACKAGE_BASE})