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Fix detection of GCC versions, avoid AC_EGREP_CPP (J.P. Larocque)

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This commit is contained in:
gbeauche 2005-07-06 05:26:01 +00:00
parent 43c8792b6e
commit 4cb11c7c9f
1 changed files with 12 additions and 10 deletions
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22
SheepShaver/src/Unix/configure.ac
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@ -1175,20 +1175,22 @@ fi
dnl Check for GCC 2.7 or higher.
HAVE_GCC27=no
AC_MSG_CHECKING(for GCC 2.7 or higher)
AC_EGREP_CPP(xyes,
[#if __GNUC__ - 1 > 1 || __GNUC_MINOR__ - 1 > 5
xyes
#endif
], [AC_MSG_RESULT(yes); HAVE_GCC27=yes], AC_MSG_RESULT(no))
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#if ! (__GNUC__ - 1 > 1 || __GNUC_MINOR__ - 1 > 5)
# error gcc < 2.7
#endif
]])],
[AC_MSG_RESULT(yes); HAVE_GCC27=yes],
[AC_MSG_RESULT(no)])
dnl Check for GCC 3.0 or higher.
HAVE_GCC30=no
AC_MSG_CHECKING(for GCC 3.0 or higher)
AC_EGREP_CPP(xyes,
[#if __GNUC__ >= 3
xyes
#endif
], [AC_MSG_RESULT(yes); HAVE_GCC30=yes], AC_MSG_RESULT(no))
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#if ! (__GNUC__ >= 3)
# error gcc < 3
#endif
]])],
[AC_MSG_RESULT(yes); HAVE_GCC30=yes],
[AC_MSG_RESULT(no)])
dnl Check for ICC.
AC_MSG_CHECKING(for ICC)