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On Tue, Oct 14, 2014 at 5:28 PM,  <jon@ringle.org> wrote:
> From: Jon Ringle <jringle@gridpoint.com>
>
> Install a wrapper touch that will strip --no-dereference from the args
> if the host installed touch does not support it
>
> Signed-off-by: Jon Ringle <jringle@gridpoint.com>
> ---
>  Makefile.in  | 14 ++++++++++++++
>  configure.ac |  8 ++++++++
>  2 files changed, 22 insertions(+)
>
> diff --git a/Makefile.in b/Makefile.in
> index 64dc808..5787699 100644
> --- a/Makefile.in
> +++ b/Makefile.in
> @@ -39,6 +39,18 @@ kconfig:
>                 conf mconf $(NCONF)
>         @echo "done."
>
> +define touch_wrapper
> +#!/bin/bash
> +
> +declare -a args
> +args=($${@})
> +
> +[ -n "@TOUCH_NO_DEREFERENCE@" ] || args=($${@//--no-dereference/})
> +
> +@GNU_touch@ $${args[*]}
> +endef
> +export touch_wrapper
> +
>  environment:
>         @echo -n "preparing PTXdist environment ..."
>         @ln -sf @AWK@ "$(abs_srcdir)/bin/awk"
> @@ -69,6 +81,8 @@ environment:
>         @ln -sf @BASH@  "$(abs_srcdir)/bin/bash"
>         @ln -sf @SYSCTL@ "$(abs_srcdir)/bin/sysctl"
>         @ln -sf @MAKE@ "$(abs_srcdir)/bin/make"
> +       @echo "$$touch_wrapper" > "$(abs_srcdir)/bin/touch"
> +       @chmod +x "$(abs_srcdir)/bin/touch"
>         @echo " done"
>
>  clean:
> diff --git a/configure.ac b/configure.ac
> index 22c8df0..5fed6c9 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -158,6 +158,7 @@ GNU_TOOL(sort, coreutils)
>  GNU_TOOL(cat, coreutils)
>  GNU_TOOL(tty, coreutils)
>  GNU_TOOL(readlink, coreutils)
> +GNU_TOOL(touch, coreutils)
>  GNU_TOOL(tar, tar)
>  GNU_TOOL(find, findutils)
>  GNU_TOOL(xargs, findutils)
> @@ -278,6 +279,13 @@ if test -z "$MSGFMT"; then
>         AC_MSG_ERROR([gettext could not be found, please install])
>  fi
>
> +dnl Check for touch --no-dereference support
> +AC_CACHE_CHECK([for touch that supports --no-dereference], [ac_cv_path_TOUCH_NO_DEREFERENCE],
> +                  [AC_PATH_PROGS_FEATURE_CHECK([TOUCH_NO_DEREFERENCE], [touch],
> +                    [[$ac_path_TOUCH_NO_DEREFERENCE --no-dereference /dev/null 2> /dev/null && \
> +                        ac_cv_path_TOUCH_NO_DEREFERENCE=$ac_path_TOUCH_NO_DEREFERENCE ac_path_TOUCH_NO_DEREFERENCE_found=:]])])
> +AC_SUBST([TOUCH_NO_DEREFERENCE], [$ac_cv_path_TOUCH_NO_DEREFERENCE])
> +
>  dnl
>  dnl Checks for Python, needed for ipkg-utils
>  dnl
> --
> 1.8.5.4
>