cmake/modules/FindExecInfo.cmake

   1 # Set up execinfo
   2
   3 # The problem with this library is that it is built-in in the Linux glib,
   4 # while on systems like FreeBSD, it is installed separately and thus needs to be linked to.
   5 # Therefore, we search for the header to see if the it's available in the first place.
   6 # If it is available, we try to locate the library to figure out whether it is built-in or not.
   7
   8 find_path(EXECINFO_INCLUDES "execinfo.h")
   9
  10 if(EXECINFO_INCLUDES STREQUAL "EXECINFO_INCLUDES-NOTFOUND")
  11   set(EXECINFO_INCLUDES "")
  12 else(EXECINFO_INCLUDES STREQUAL "EXECINFO_INCLUDES-NOTFOUND")
  13   # We found the header file's include dir.
  14
  15   # Now determine if it's built-in or not, by searching the library file.
  16   find_library(EXECINFO_LIBRARIES "execinfo")
  17
  18   if(EXECINFO_LIBRARIES STREQUAL "EXECINFO_LIBRARIES-NOTFOUND")
  19     # Built-in, no further action is needed
  20     set(EXECINFO_LIBRARIES "")
  21     message(STATUS "Found execinfo (built-in)")
  22   else(EXECINFO_LIBRARIES STREQUAL "EXECINFO_LIBRARIES-NOTFOUND")
  23     # It's an external library.
  24     message(STATUS "Found execinfo: ${EXECINFO_LIBRARIES}")
  25   endif(EXECINFO_LIBRARIES STREQUAL "EXECINFO_LIBRARIES-NOTFOUND")
  26
  27   set(EXECINFO_FOUND true)
  28
  29 endif(EXECINFO_INCLUDES STREQUAL "EXECINFO_INCLUDES-NOTFOUND")