[all] allow disable of backtrace support during build

common/CMakeLists.txt

@@ -5,6 +5,10 @@ include_directories(
 	${PROJECT_SOURCE_DIR}/include
 )
 
+if(ENABLE_BACKTRACE)
+  add_definitions(-DENABLE_BACKTRACE)
+endif()
+
 set(COMMON_SOURCES
   src/stringutils.c
   src/stringlist.c
@@ -27,7 +31,9 @@ if(WIN32)
 else()
   set(SOURCES ${COMMON_SOURCES} ${LINUX_SOURCES})
   add_library(lg_common STATIC ${SOURCES})
-  target_link_libraries(lg_common bfd)
+  if(ENABLE_BACKTRACE)
+    target_link_libraries(lg_common bfd)
+  endif()
 endif()
 
 target_include_directories(lg_common

common/src/crash.linux.c

@@ -21,6 +21,8 @@ Place, Suite 330, Boston, MA 02111-1307 USA
 #include "common/crash.h"
 #include "common/debug.h"
 
+#if defined(ENABLE_BACKTRACE)
+
 #include <execinfo.h>
 #include <signal.h>
 #include <stdio.h>
@@ -219,4 +221,13 @@ bool installCrashHandler(const char * exe)
   }
 
   return true;
-}
+}
+
+#else //ENABLE_BACKTRACE
+
+bool installCrashHandler(const char * exe)
+{
+  return true;
+}
+
+#endif