Allow testing without native wchar_t

This helps discovering problems for other platforms.

Signed-off-by: Michal Čihař <michal@cihar.com>

.travis.yml

@@ -66,6 +66,9 @@ matrix:
     - os: linux
       compiler: gcc
       env: ARGS="-DENABLE_GETOPT=OFF"
+    - os: linux
+      compiler: gcc
+      env: ARGS="-DUSE_WCHAR_T=OFF"
 services:
   - mysql
   - postgresql

CMakeLists.txt

@@ -107,6 +107,7 @@ check_function_exists (scandir HAVE_SCANDIR)
 check_function_exists (alphasort HAVE_ALPHASORT)
 
 set (ENABLE_GETOPT ON CACHE BOOL "Enable getopt usage")
+set (USE_WCHAR_T ON CACHE BOOL "Use native wchar_t type")
 if (ENABLE_GETOPT)
 check_symbol_exists (getopt "unistd.h" HAVE_GETOPT)
 check_symbol_exists (getopt_long "getopt.h" HAVE_GETOPT_LONG)

cmake/templates/gammu-config.h.cmake

@@ -282,7 +282,7 @@
 #endif
 /* Size of wchar_t needs to be 4 bytes to store supplementary plan unicode */
 #if @WCHAR_T@ >= 4
-#define USE_WCHAR_T
+#cmakedefine USE_WCHAR_T
 #endif
 #ifndef HAVE_WCHAR_T
 #cmakedefine HAVE_WCHAR_T