m4/execinfo.m4

   1 # Check for GNU-style execinfo.h.
   2
   3 dnl Copyright 2012-2014 Free Software Foundation, Inc.
   4 dnl This file is free software; the Free Software Foundation
   5 dnl gives unlimited permission to copy and/or distribute it,
   6 dnl with or without modifications, as long as this notice is preserved.
   7
   8 AC_DEFUN([gl_EXECINFO_H],
   9 [
  10   AC_CHECK_HEADERS_ONCE([execinfo.h])
  11
  12   LIB_EXECINFO=''
  13   EXECINFO_H='execinfo.h'
  14
  15   if test $ac_cv_header_execinfo_h = yes; then
  16     gl_saved_libs=$LIBS
  17       AC_SEARCH_LIBS([backtrace_symbols_fd], [execinfo],
  18         [test "$ac_cv_search_backtrace_symbols_fd" = "none required" ||
  19          LIB_EXECINFO=$ac_cv_search_backtrace_symbols_fd])
  20     LIBS=$gl_saved_libs
  21     test "$ac_cv_search_backtrace_symbols_fd" = no || EXECINFO_H=''
  22   fi
  23
  24   if test -n "$EXECINFO_H"; then
  25     AC_LIBOBJ([execinfo])
  26   fi
  27
  28   AC_SUBST([EXECINFO_H])
  29   AC_SUBST([LIB_EXECINFO])
  30   AM_CONDITIONAL([GL_GENERATE_EXECINFO_H], [test -n "$EXECINFO_H"])
  31 ])