buildtools/gcc/isl/m4/ax_submodule.m4
Fredrik Holmqvist 0b514caa50 Move isl inside gcc dir
Moving it inside gcc dir allows gcc to detect and build isl while
building gcc. It has dependencies on other libraries that would
need to be prebuilt if we build it ourselves.

This is one of a few steps in building gcc with isl and allowing graphite
optimization flags.
2018-07-04 20:20:55 +02:00

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AC_DEFUN([AX_SUBMODULE],
[
m4_if(m4_bregexp($2,|,choice),choice,
[AC_ARG_WITH($1,
[AS_HELP_STRING([--with-$1=$2],
[Which $1 to use [default=$3]])])])
case "system" in
$2)
AC_ARG_WITH($1_prefix,
[AS_HELP_STRING([--with-$1-prefix=DIR],
[Prefix of $1 installation])])
AC_ARG_WITH($1_exec_prefix,
[AS_HELP_STRING([--with-$1-exec-prefix=DIR],
[Exec prefix of $1 installation])])
esac
m4_if(m4_bregexp($2,build,build),build,
[AC_ARG_WITH($1_builddir,
[AS_HELP_STRING([--with-$1-builddir=DIR],
[Location of $1 builddir])])])
if test "x$with_$1_prefix" != "x" -a "x$with_$1_exec_prefix" = "x"; then
with_$1_exec_prefix=$with_$1_prefix
fi
if test "x$with_$1_prefix" != "x" -o "x$with_$1_exec_prefix" != "x"; then
if test "x$with_$1" != "x" -a "x$with_$1" != "xyes" -a "x$with_$1" != "xsystem"; then
AC_MSG_ERROR([Setting $with_$1_prefix implies use of system $1])
fi
with_$1="system"
fi
if test "x$with_$1_builddir" != "x"; then
if test "x$with_$1" != "x" -a "x$with_$1" != "xyes" -a "x$with_$1" != "xbuild"; then
AC_MSG_ERROR([Setting $with_$1_builddir implies use of build $1])
fi
with_$1="build"
$1_srcdir=`echo @abs_srcdir@ | $with_$1_builddir/config.status --file=-`
AC_MSG_NOTICE($1 sources in $$1_srcdir)
fi
if test "x$with_$1_exec_prefix" != "x"; then
export PKG_CONFIG_PATH="$with_$1_exec_prefix/lib/pkgconfig${PKG_CONFIG_PATH+:$PKG_CONFIG_PATH}"
fi
case "$with_$1" in
$2)
;;
*)
case "$3" in
bundled)
if test -d $srcdir/.git -a \
-d $srcdir/$1 -a \
! -d $srcdir/$1/.git; then
AC_MSG_WARN([git repo detected, but submodule $1 not initialized])
AC_MSG_WARN([You may want to run])
AC_MSG_WARN([ git submodule init])
AC_MSG_WARN([ git submodule update])
AC_MSG_WARN([ sh autogen.sh])
fi
if test -f $srcdir/$1/configure; then
with_$1="bundled"
else
with_$1="no"
fi
;;
*)
with_$1="$3"
;;
esac
;;
esac
AC_MSG_CHECKING([which $1 to use])
AC_MSG_RESULT($with_$1)
])