AX_CFLAGS_IRIX_OPTION(-go_for_it) would show a message as like
"checking CFLAGS for irix/cc -go_for_it ... yes" and adds the
optionflag to CFLAGS if it is understood. You can override the
shellvar-default of CFLAGS of course. The order of arguments stems
from the explicit macros like AX_CFLAGS_WARN_ALL.
The cousin AX_CXXFLAGS_IRIX_OPTION would check for an option to add
to CXXFLAGS - and it uses the autoconf setup for C++ instead of C
(since it is possible to use different compilers for C and C++).
The macro is a lot simpler than any special AX_CFLAGS_* macro (or
ac_cxx_rtti.m4 macro) but allows to check for arbitrary options.
However, if you use this macro in a few places, it would be great
if you would make up a new function-macro and submit it to the
ac-archive.
- $1 option-to-check-for : required ("-option" as non-value)
- $2 shell-variable-to-add-to : CFLAGS (or CXXFLAGS in the other case)
- $3 action-if-found : add value to shellvariable
- $4 action-if-not-found : nothing
note: in earlier versions, $1-$2 were swapped. We try to detect the
situation and accept a $2=~/-/ as being the old
option-to-check-for.
see also: AX_CFLAGS_GCC_OPTION for the widely used original
variant.
AC_DEFUN([AX_CFLAGS_IRIX_OPTION_OLD], [dnl
AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_irix_option_$2])dnl
AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for irix/cc m4_ifval($2,$2,-option)],
VAR,[VAR="no, unknown"
AC_LANG_SAVE
AC_LANG_C
ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
in "-fullwarn -use_readonly_const % m4_ifval($2,$2,-option)" dnl IRIX C
#
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
AC_TRY_COMPILE([],[return 0;],
[VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
done
FLAGS="$ac_save_[]FLAGS"
AC_LANG_RESTORE
])
case ".$VAR" in
.ok|.ok,*) m4_ifvaln($3,$3) ;;
.|.no|.no,*) m4_ifvaln($4,$4) ;;
*) m4_ifvaln($3,$3,[
if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
AS_VAR_POPDEF([FLAGS])dnl
])
dnl the only difference - the LANG selection... and the default FLAGS
AC_DEFUN([AX_CXXFLAGS_IRIX_OPTION_OLD], [dnl
AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_irix_option_$2])dnl
AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for irix/cc m4_ifval($2,$2,-option)],
VAR,[VAR="no, unknown"
AC_LANG_SAVE
AC_LANG_CXX
ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
in "-fullwarn -use_readonly_const % m4_ifval($2,$2,-option)" dnl IRIX C
#
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
AC_TRY_COMPILE([],[return 0;],
[VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
done
FLAGS="$ac_save_[]FLAGS"
AC_LANG_RESTORE
])
case ".$VAR" in
.ok|.ok,*) m4_ifvaln($3,$3) ;;
.|.no|.no,*) m4_ifvaln($4,$4) ;;
*) m4_ifvaln($3,$3,[
if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
AS_VAR_POPDEF([FLAGS])dnl
])
dnl --------------------------------------------------------------------------
AC_DEFUN([AX_CFLAGS_IRIX_OPTION_NEW], [dnl
AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_irix_option_$1])dnl
AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for irix/cc m4_ifval($1,$1,-option)],
VAR,[VAR="no, unknown"
AC_LANG_SAVE
AC_LANG_C
ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
in "-fullwarn -use_readonly_const % m4_ifval($1,$1,-option)" dnl IRIX C
#
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
AC_TRY_COMPILE([],[return 0;],
[VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
done
FLAGS="$ac_save_[]FLAGS"
AC_LANG_RESTORE
])
case ".$VAR" in
.ok|.ok,*) m4_ifvaln($3,$3) ;;
.|.no|.no,*) m4_ifvaln($4,$4) ;;
*) m4_ifvaln($3,$3,[
if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
AS_VAR_POPDEF([FLAGS])dnl
])
dnl the only difference - the LANG selection... and the default FLAGS
AC_DEFUN([AX_CXXFLAGS_IRIX_OPTION_NEW], [dnl
AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_irix_option_$1])dnl
AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for irix/cc m4_ifval($1,$1,-option)],
VAR,[VAR="no, unknown"
AC_LANG_SAVE
AC_LANG_CXX
ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
in "-fullwarn -use_readonly_const % m4_ifval($1,$1,-option)" dnl IRIX C
#
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
AC_TRY_COMPILE([],[return 0;],
[VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
done
FLAGS="$ac_save_[]FLAGS"
AC_LANG_RESTORE
])
case ".$VAR" in
.ok|.ok,*) m4_ifvaln($3,$3) ;;
.|.no|.no,*) m4_ifvaln($4,$4) ;;
*) m4_ifvaln($3,$3,[
if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
AS_VAR_POPDEF([FLAGS])dnl
])
AC_DEFUN([AX_CFLAGS_IRIX_OPTION],[ifelse(m4_regexp([$2],[-]),-1,
[AX_CFLAGS_IRIX_OPTION_NEW($@)],[AX_CFLAGS_IRIX_OPTION_OLD($@)])])
AC_DEFUN([AX_CXXFLAGS_IRIX_OPTION],[ifelse(m4_regexp([$2],[-]),-1,
[AX_CXXFLAGS_IRIX_OPTION_NEW($@)],[AX_CXXFLAGS_IRIX_OPTION_OLD($@)])])