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|
dnl as-ac-expand.m4 0.2.0
dnl autostars m4 macro for expanding directories using configure's prefix
dnl thomas@apestaart.org
dnl AS_AC_EXPAND(VAR, CONFIGURE_VAR)
dnl example
dnl AS_AC_EXPAND(SYSCONFDIR, $sysconfdir)
dnl will set SYSCONFDIR to /usr/local/etc if prefix=/usr/local
AC_DEFUN([AS_AC_EXPAND],
[
EXP_VAR=[$1]
FROM_VAR=[$2]
dnl first expand prefix and exec_prefix if necessary
prefix_save=$prefix
exec_prefix_save=$exec_prefix
dnl if no prefix given, then use /usr/local, the default prefix
if test "x$prefix" = "xNONE"; then
prefix="$ac_default_prefix"
fi
dnl if no exec_prefix given, then use prefix
if test "x$exec_prefix" = "xNONE"; then
exec_prefix=$prefix
fi
full_var="$FROM_VAR"
dnl loop until it doesn't change anymore
while true; do
new_full_var="`eval echo $full_var`"
if test "x$new_full_var" = "x$full_var"; then break; fi
full_var=$new_full_var
done
dnl clean up
full_var=$new_full_var
AC_SUBST([$1], "$full_var")
dnl restore prefix and exec_prefix
prefix=$prefix_save
exec_prefix=$exec_prefix_save
])
dnl Checks for availability of various utmp fields
dnl
dnl Original code by Bernhard Rosenkraenzer (bero@linux.net.eu.org), 1998.
dnl Modifications by Timur Bakeyev (timur@gnu.org), 1999.
dnl Patched from http://bugzilla.gnome.org/show_bug.cgi?id=937
dnl
dnl GDM_CHECK_UTMP()
dnl Test for presence of the field and define HAVE_UT_UT_field macro
dnl Taken from vte/gnome-pty-helper's GPH_CHECK_UTMP
AC_DEFUN([GDM_CHECK_UTMP],[
AC_CHECK_HEADERS(sys/time.h utmp.h utmpx.h)
AC_HEADER_TIME
if test "$ac_cv_header_utmpx_h" = "yes"; then
AC_DEFINE(UTMP,[struct utmpx],[Define to the name of a structure which holds utmp data.])
else
AC_DEFINE(UTMP,[struct utmp],[Define to the name of a structure which holds utmp data.])
fi
dnl some systems (BSD4.4-like) require time.h to be included before utmp.h :/
AC_MSG_CHECKING(for ut_host field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; char *p; p=ut.ut_host;],result=yes,result=no)
if test "$result" = "yes"; then
AC_DEFINE(HAVE_UT_UT_HOST,1,[Define if your utmp struct contains a ut_host field.])
fi
AC_MSG_RESULT($result)
AC_MSG_CHECKING(for ut_pid field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; int i; i=ut.ut_pid;],result=yes,result=no)
if test "$result" = "yes"; then
AC_DEFINE(HAVE_UT_UT_PID,1,[Define if your utmp struct contains a ut_pid field.])
fi
AC_MSG_RESULT($result)
AC_MSG_CHECKING(for ut_id field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; char *p; p=ut.ut_id;],result=yes,result=no)
if test "$result" = "yes"; then
AC_DEFINE(HAVE_UT_UT_ID,1,[Define if your utmp struct contains a ut_id field.])
fi
AC_MSG_RESULT($result)
AC_MSG_CHECKING(for ut_name field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; char *p; p=ut.ut_name;],result=yes,result=no)
if test "$result" = "yes"; then
AC_DEFINE(HAVE_UT_UT_NAME,1,[Define if your utmp struct contains a ut_name field.])
fi
AC_MSG_RESULT($result)
AC_MSG_CHECKING(for ut_type field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; int i; i=(int) ut.ut_type;],result=yes,result=no)
if test "$result" = "yes"; then
AC_DEFINE(HAVE_UT_UT_TYPE,1,[Define if your utmp struct contains a ut_type field.])
fi
AC_MSG_RESULT($result)
AC_MSG_CHECKING(for ut_exit.e_termination field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; ut.ut_exit.e_termination=0;],result=yes,result=no)
if test "$result" = "yes"; then
AC_DEFINE(HAVE_UT_UT_EXIT_E_TERMINATION,1,[Define if your utmp struct contains a ut_exit.e_termination field.])
fi
AC_MSG_RESULT($result)
AC_MSG_CHECKING(for ut_user field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; char *p; p=ut.ut_user;],result=yes,result=no)
if test "$result" = "yes"; then
AC_DEFINE(HAVE_UT_UT_USER,1,[Define if your utmp struct contains a ut_user field.])
fi
AC_MSG_RESULT($result)
AC_MSG_CHECKING(for ut_time field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; ut.ut_time=0;],result=yes,result=no)
if test "$result" = "yes"; then
AC_DEFINE(HAVE_UT_UT_TIME,1,[Define if your utmp struct contains a ut_time field.])
fi
AC_MSG_RESULT($result)
AC_MSG_CHECKING(for ut_tv field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; ut.ut_tv.tv_sec=0; ut.ut_tv.tv_usec=0; ],result=yes,result=no)
if test "$result" = "yes"; then
AC_DEFINE(HAVE_UT_UT_TV,1,[Define if your utmp struct contains a ut_tv field.])
fi
AC_MSG_RESULT($result)
AC_MSG_CHECKING(for ut_syslen field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; ut.ut_syslen=0;],result=yes,result=no)
if test "$result" = "yes"; then
AC_DEFINE(HAVE_UT_UT_SYSLEN,1,[Define if your utmp struct contains a ut_syslen field.])
fi
AC_MSG_RESULT($result)
])
dnl EXTRA_COMPILE_WARNINGS
dnl Turn on many useful compiler warnings
dnl For now, only works on GCC
AC_DEFUN([EXTRA_COMPILE_WARNINGS],[
dnl ******************************
dnl More compiler warnings
dnl ******************************
AC_ARG_ENABLE(compile-warnings,
AC_HELP_STRING([--enable-compile-warnings=@<:@no/minimum/yes/maximum/error@:>@],
[Turn on compiler warnings]),,
[enable_compile_warnings="m4_default([$1],[yes])"])
warnCFLAGS=
if test "x$GCC" != xyes; then
enable_compile_warnings=no
fi
warning_flags=
realsave_CFLAGS="$CFLAGS"
case "$enable_compile_warnings" in
no)
warning_flags=
;;
minimum)
warning_flags="-Wall"
;;
yes)
warning_flags="-Wall -Wmissing-prototypes"
;;
maximum|error)
warning_flags="-Wall -Wmissing-prototypes -Wnested-externs -Wpointer-arith"
CFLAGS="$warning_flags $CFLAGS"
for option in -Wno-sign-compare; do
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $option"
AC_MSG_CHECKING([whether gcc understands $option])
AC_TRY_COMPILE([], [],
has_option=yes,
has_option=no,)
CFLAGS="$SAVE_CFLAGS"
AC_MSG_RESULT($has_option)
if test $has_option = yes; then
warning_flags="$warning_flags $option"
fi
unset has_option
unset SAVE_CFLAGS
done
unset option
if test "$enable_compile_warnings" = "error" ; then
warning_flags="$warning_flags -Werror"
fi
;;
*)
AC_MSG_ERROR(Unknown argument '$enable_compile_warnings' to --enable-compile-warnings)
;;
esac
CFLAGS="$realsave_CFLAGS"
AC_MSG_CHECKING(what warning flags to pass to the C compiler)
AC_MSG_RESULT($warning_flags)
AC_ARG_ENABLE(iso-c,
AC_HELP_STRING([--enable-iso-c],
[Try to warn if code is not ISO C ]),,
[enable_iso_c=no])
AC_MSG_CHECKING(what language compliance flags to pass to the C compiler)
complCFLAGS=
if test "x$enable_iso_c" != "xno"; then
if test "x$GCC" = "xyes"; then
case " $CFLAGS " in
*[\ \ ]-ansi[\ \ ]*) ;;
*) complCFLAGS="$complCFLAGS -ansi" ;;
esac
case " $CFLAGS " in
*[\ \ ]-pedantic[\ \ ]*) ;;
*) complCFLAGS="$complCFLAGS -pedantic" ;;
esac
fi
fi
AC_MSG_RESULT($complCFLAGS)
WARN_CFLAGS="$warning_flags $complCFLAGS"
AC_SUBST(WARN_CFLAGS)
])
|
