Arc-39-theme/m4/arc-gnome-shell.m4

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# ARC_GNOME_SHELL()
# ---------------
AC_DEFUN([ARC_GNOME_SHELL], [
GNOME_SHELL_DIR="$srcdir/common/gnome-shell"
AC_ARG_WITH(
[gnome-shell],
[AS_HELP_STRING(
[--with-gnome-shell],
[gnome-shell minor version]
)],
[GNOME_SHELL_VERSION="$withval"],
[AC_CHECK_PROG(
[GNOME_SHELL_FOUND],
[gnome-shell],
[yes],
[no]
)
AS_IF(
# Couldn't find gnome-shell from $PATH
[test "x$GNOME_SHELL_FOUND" = xyes],
[GNOME_SHELL_VERSION=`gnome-shell --version | cut -d' ' -f3`],
[AC_MSG_ERROR([Could not determine GNOME Shell version. Install gnome-shell, or specify the version using '--with-gnome-shell=<version>' option.])]
)
AS_IF(
# Found gnome-shell, but couldn't determine the version
[test -z "$GNOME_SHELL_VERSION"],
[AC_MSG_ERROR([Could not determine GNOME Shell version. Try specifying the version using '--with-gnome-shell=<version>' option.])]
)]
)
# Trim version extras
GNOME_SHELL_VERSION=`echo $GNOME_SHELL_VERSION | cut -d. -f-2`
# Extra major and minor version components
GNOME_SHELL_VERSMJR=`echo $GNOME_SHELL_VERSION | cut -d. -f1`
GNOME_SHELL_VERSMNR=`echo $GNOME_SHELL_VERSION | cut -d. -f2`
# Evenize the minor version for stable versions
AS_IF(
[test `expr $GNOME_SHELL_VERSMNR % 2` != "0"],
[GNOME_SHELL_VERSION="$GNOME_SHELL_VERSMJR.`expr $GNOME_SHELL_VERSMNR + 1`"]
)
AS_IF(
[! test -e "$GNOME_SHELL_DIR/$GNOME_SHELL_VERSION"],
[AC_MSG_ERROR([Invalid gnome-shell version: $GNOME_SHELL_VERSION])]
)
AC_SUBST([GNOME_SHELL_VERSION])
AC_MSG_RESULT([Building for gnome-shell $GNOME_SHELL_VERSION])
])