acinclude.m4

fdisk 实现源码,可以查询Linux下系统的分区信息

# library paths for libparted
# written by Damien Genet <[e-mail]>

dnl Usage:
dnl CHECK_LIBPARTED([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl where MINIMUM-VERSION must be >= 1.2.8 and != 1.3.0
dnl
dnl Example:
dnl CHECK_LIBPARTED(1.2.8, , [AC_MSG_ERROR([*** libparted >= 1.2.8 not installed - please install first ***])])
dnl
dnl Adds the required libraries to $PARTED_LIBS and does an
dnl AC_SUBST(PARTED_LIBS)
dnl


AC_DEFUN([CHECK_LIBPARTED],
[
AC_REQUIRE([AC_CANONICAL_HOST])

dnl save LIBS
saved_LIBS="$LIBS"

dnl Check for headers and library
AC_CHECK_HEADER(parted/parted.h, ,
		[AC_MSG_ERROR([<parted/parted.h> not found; install GNU/Parted])]
		$3)
AC_CHECK_LIB(uuid, uuid_generate, ,
	     [AC_MSG_ERROR([libuuid not found; install e2fsprogs available at http://web.mit.edu/tytso/www/linux/e2fsprogs.html])]
             $3)
AC_CHECK_LIB(parted,ped_device_read, ,
             [AC_MSG_ERROR([libparted not found; install GNU/Parted available at http://www.gnu.org/software/parted/parted.html])]
             $3)

case "$host_os" in
	gnu*)	# The Hurd requires some special system libraries
		# with very generic names, which is why we special
		# case these tests.

		AC_CHECK_LIB(shouldbeinlibc,lcm, ,
                	[AC_MSG_ERROR([libshouldbeinlibc not found; install the Hurd development libraries.])]
                $3)

		AC_CHECK_LIB(store,store_open, ,
                	[AC_MSG_ERROR([libstore not found; install the Hurd development libraries.])]
                $3)
		;;
	*)	;;
esac

AC_MSG_CHECKING(for libparted - version >= $1)

AC_TRY_LINK_FUNC(ped_get_version,,
                 AC_MSG_RESULT(failed)
                 AC_MSG_ERROR([*** libparted < 1.2.8 or == 1.3.0 can't execute test ***]))

dnl Get major, minor, and micro version from arg MINIMUM-VERSION
parted_config_major_version=`echo $1 | \
    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
parted_config_minor_version=`echo $1 | \
    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
parted_config_micro_version=`echo $1 | \
    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`

dnl Compare MINIMUM-VERSION with libparted version
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <parted/parted.h>

int main ()
{
	int		major, minor, micro;
	const char	*version;    
	
	if ( !(version = ped_get_version ()) )
		exit(1);
	if (sscanf(version, "%d.%d.%d", &major, &minor, &micro) != 3) {
		printf("%s, bad version string\n", version);
		exit(1);
	}
	
	if ((major > $parted_config_major_version) ||
	   ((major == $parted_config_major_version) && (minor > $parted_config_minor_version)) ||
	   ((major == $parted_config_major_version) && (minor == $parted_config_minor_version) && (micro >= $parted_config_micro_version))) {
		return 0;
	} else {
		printf("\n*** An old version of libparted (%s) was found.\n",
		       version);
		printf("*** You need a version of libparted equal to or newer than %d.%d.%d.\n",
			$parted_config_major_version, 
			$parted_config_minor_version,
			$parted_config_micro_version);
		printf("*** You can get it at - ftp://ftp.gnu.org/gnu/parted/\n");
		return 1;
	}
}
], 
    AC_MSG_RESULT(yes); $2,
    AC_MSG_RESULT(no) ; $3,
    [echo $ac_n "cross compiling; assumed OK... $ac_c"])

dnl restore orignial LIBS and set @PARTED_LIBS@
PARTED_LIBS="$LIBS"
LIBS="$saved_LIBS"
AC_SUBST(PARTED_LIBS)

dnl Execute ACTION-IF-FOUND
$2

])

dnl Usage:
dnl CHECK_CHECK([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl
dnl Adds the required libraries to $CHECK_LIBS and $CHECK_CFLAGS does an
dnl AC_SUBST(CHECK_LIBS) and AC_SUBST(CHECK_CFLAGS)
dnl


AC_DEFUN([CHECK_CHECK],
[
AC_REQUIRE([AC_CANONICAL_HOST])


AC_ARG_WITH(check,
	AS_HELP_STRING([--with-check=PATH],
	               [prefix where check is installed [default=auto]]))

if test x$with_check = xno; then

$3

else



dnl save LIBS
saved_LIBS="$LIBS"
saved_CFGLAGS="$CFLAGS"

if test x$with_check != x; then
	CFLAGS="$CFLAGS -I$with_check/include"
	LIBS="$LIBS -L$with_check/lib -lcheck"
fi

AC_MSG_CHECKING(for check >= $1)

dnl Get major, minor, and micro version from arg MINIMUM-VERSION
check_config_major_version=`echo $1 | \
    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
check_config_minor_version=`echo $1 | \
    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
check_config_micro_version=`echo $1 | \
    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`

dnl Compare MINIMUM-VERSION with libparted version
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <check.h>

int main ()
{
	int		major = CHECK_MAJOR_VERSION,
			minor = CHECK_MINOR_VERSION,
			micro = CHECK_MICRO_VERSION;
	const char	*version;    
	

	if ((major > $check_config_major_version) ||
	   ((major == $check_config_major_version) && (minor > $check_config_minor_version)) ||
	   ((major == $check_config_major_version) && (minor == $check_config_minor_version) && (micro >= $check_config_micro_version))) {

		return 0;
	} else {
		printf(" *** Looked for check version >= %d.%d.%d, found %d.%d.%d\n",
			$check_config_major_version, $check_config_minor_version,
			$check_config_micro_version, major, minor, micro);
		return 1;
	}
}
], 
    AC_MSG_RESULT(yes),
    AC_MSG_RESULT(no) ; $3,
    [echo $ac_n "cross compiling; assumed OK... $ac_c"])

dnl restore orignial LIBS and set @CHECK_LIBS@

if test x$with_check != x; then
	CHECK_CFLAGS="-I$with_check/include"
	CHECK_LIBS="-L$with_check/lib -lcheck"
else
	CHECK_LIBS="-lcheck"
	CHECK_CFLAGS=""
fi
AC_SUBST(CHECK_LIBS)
AC_SUBST(CHECK_CFLAGS)
LIBS="$saved_LIBS"


dnl Execute ACTION-IF-FOUND
$2

fi

])


dnl Usage:
dnl CHECK_CHECK([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl
dnl Adds the required libraries to $CHECK_LIBS and $CHECK_CFLAGS does an
dnl AC_SUBST(CHECK_LIBS) and AC_SUBST(CHECK_CFLAGS)
dnl


AC_DEFUN([CHECK_CHECK],
[
AC_REQUIRE([AC_CANONICAL_HOST])


AC_ARG_WITH(check,
	AS_HELP_STRING([--with-check=PATH],
	               [prefix where check is installed [default=auto]]))

if test x$with_check = xno; then

$3

else



dnl save LIBS
saved_LIBS="$LIBS"
saved_CFGLAGS="$CFLAGS"

if test x$with_check != x; then
	CFLAGS="$CFLAGS -I$with_check/include"
	LIBS="$LIBS -L$with_check/lib -lcheck"
fi

AC_MSG_CHECKING(for check >= $1)

dnl Get major, minor, and micro version from arg MINIMUM-VERSION
check_config_major_version=`echo $1 | \
    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
check_config_minor_version=`echo $1 | \
    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
check_config_micro_version=`echo $1 | \
    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`

dnl Compare MINIMUM-VERSION with libparted version
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <check.h>

int main ()
{
	int		major = CHECK_MAJOR_VERSION,
			minor = CHECK_MINOR_VERSION,
			micro = CHECK_MICRO_VERSION;
	const char	*version;    
	

	if ((major > $check_config_major_version) ||
	   ((major == $check_config_major_version) && (minor > $check_config_minor_version)) ||
	   ((major == $check_config_major_version) && (minor == $check_config_minor_version) && (micro >= $check_config_micro_version))) {

		return 0;
	} else {
		printf(" *** Looked for check version >= %d.%d.%d, found %d.%d.%d\n",
			$check_config_major_version, $check_config_minor_version,
			$check_config_micro_version, major, minor, micro);
		return 1;
	}
}
], 
    AC_MSG_RESULT(yes),
    AC_MSG_RESULT(no) ; $3,
    [echo $ac_n "cross compiling; assumed OK... $ac_c"])

dnl restore orignial LIBS and set @CHECK_LIBS@

if test x$with_check != x; then
	CHECK_CFLAGS="-I$with_check/include"
	CHECK_LIBS="-L$with_check/lib -lcheck"
else
	CHECK_LIBS="-lcheck"
	CHECK_CFLAGS=""
fi
AC_SUBST(CHECK_LIBS)
AC_SUBST(CHECK_CFLAGS)
LIBS="$saved_LIBS"

fi

])


dnl Usage:
dnl CHECK_CURSES([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
dnl
dnl Example:
dnl CHECK_CURSES(, AC_MSG_ERROR([ncurses not installed; please install it first]))
dnl
dnl Adds the required libraries to $CURSES_LIBS and does an
dnl AC_SUBST(CURSES_LIBS)
dnl

AC_DEFUN([CHECK_CURSES],
[
AC_REQUIRE([AC_CANONICAL_HOST])

dnl save LIBS
saved_LIBS="$LIBS"
LIBS=""


dnl Check for headers and library
AC_CHECK_HEADER(ncurses.h, have_ncurses_h=true
		AC_DEFINE(HAVE_NCURSES_H, 1, [We have the ncurses.h header.]),
		[AC_CHECK_HEADER(curses.h, 
		have_ncurses_h=false
		AC_DEFINE(HAVE_CURSES_H, 1, [We have the curses.h header.]),
		$2)])
if test x$have_ncurses_h == xtrue; then
	AC_CHECK_LIB(ncurses, getch, LIBS="-lncurses"
		$1 ,
		$2)
else
	AC_CHECK_LIB(curses, getch, LIBS="-lcurses"
		$1 ,
		$2)
fi



dnl restore orignial LIBS and set @CURSES_LIBS@
CURSES_LIBS="$LIBS"
LIBS="$saved_LIBS"
AC_SUBST(CURSES_LIBS)


])