sst_check_shm.m4

AC_DEFUN([SST_CHECK_SHM], [

  sst_check_shm_happy="yes"

  CPPFLAGS_saved="$CPPFLAGS"
  LDFLAGS_saved="$LDFLAGS"
  LIBS_saved="$LIBS"

  AC_LANG_PUSH(C)
  AC_SEARCH_LIBS([shm_open], [rt], [SHM_LIB="$LIBS"], [sst_check_shm_happy="no"])
  AC_LANG_POP(C)

  CPPFLAGS="$CPPFLAGS_saved"
  LDFLAGS="$LDFLAGS_saved"
  LIBS="$LIBS_saved"

  AC_SUBST([SHM_LIB])
  AM_CONDITIONAL([HAVE_SHM], [test "$sst_check_shm_happy" = "yes"])
  AS_IF([test "$sst_check_shm_happy" = "yes"],
        [AC_DEFINE([HAVE_SHM], [1], [Set to 1 if SHM was found])])

  AS_IF([test "$sst_check_shm_happy" = "yes"], [$1], [$2])
])