ctdb/lib/replace/dlfcn.m4

   1 dnl dummies provided by dlfcn.c if not available
   2 save_LIBS="$LIBS"
   3 LIBS=""
   4
   5 libreplace_cv_dlfcn=no
   6 AC_SEARCH_LIBS(dlopen, dl)
   7
   8 AC_CHECK_HEADERS(dlfcn.h)
   9 AC_CHECK_FUNCS([dlopen dlsym dlerror dlclose],[],[libreplace_cv_dlfcn=yes])
  10
  11 AC_VERIFY_C_PROTOTYPE([void *dlopen(const char* filename, unsigned int flags)],
  12         [
  13         return 0;
  14         ],[
  15         AC_DEFINE(DLOPEN_TAKES_UNSIGNED_FLAGS, 1, [Whether dlopen takes unsinged int flags])
  16         ],[],[
  17         #include <dlfcn.h>
  18         ])
  19
  20 if test x"${libreplace_cv_dlfcn}" = x"yes";then
  21         LIBREPLACEOBJ="${LIBREPLACEOBJ} dlfcn.o"
  22 fi
  23
  24 LIBDL="$LIBS"
  25 AC_SUBST(LIBDL)
  26 LIBS="$save_LIBS"