*** m4/curl-compilers.m4.orig	2015-05-19 17:55:00.037568333 +0300
--- m4/curl-compilers.m4	2015-05-19 17:56:34.514570488 +0300
***************
*** 175,181 ****
  AC_DEFUN([CURL_CHECK_COMPILER_HPUX_C], [
    AC_MSG_CHECKING([if compiler is HP-UX C])
    CURL_CHECK_DEF([__HP_cc], [], [silent])
!   if test "$curl_cv_have_def___HP_cc" = "yes"; then
      AC_MSG_RESULT([yes])
      compiler_id="HP_UX_C"
      flags_dbg_all="-g -s"
--- 175,183 ----
  AC_DEFUN([CURL_CHECK_COMPILER_HPUX_C], [
    AC_MSG_CHECKING([if compiler is HP-UX C])
    CURL_CHECK_DEF([__HP_cc], [], [silent])
!   CURL_CHECK_DEF([__hpux], [], [silent])
!   if test "$curl_cv_have_def___HP_cc" = "yes" ||
!     test "$curl_cv_have_def___hpux" = "yes"; then
      AC_MSG_RESULT([yes])
      compiler_id="HP_UX_C"
      flags_dbg_all="-g -s"