package/autofs/0003-configure-add-cache-variable-for-Linux-proc-filesyst.patch

   1 From bb5cc9cee1963362fe56b4fac65fed4912da4215 Mon Sep 17 00:00:00 2001
   2 From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
   3 Date: Sat, 30 Jul 2016 22:30:01 +0200
   4 Subject: [PATCH] configure: add cache variable for Linux proc filesystem check
   5
   6 When cross-compiling, whether the /proc filesystem is available in the
   7 build environment does not give any indication as to whether it will
   8 be available in the execution environment.
   9
  10 This commit therefore adjust the AF_LINUX_PROCFS macro to use
  11 AC_CACHE_CHECK(), so that an ac_cv_linux_procfs variable can be
  12 preseeded in the environment to force the result of this check.
  13
  14 Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
  15 ---
  16  aclocal.m4 | 15 +++++----------
  17  1 file changed, 5 insertions(+), 10 deletions(-)
  18
  19 diff --git a/aclocal.m4 b/aclocal.m4
  20 index 2115204..333699c 100644
  21 --- a/aclocal.m4
  22 +++ b/aclocal.m4
  23 @@ -80,16 +80,11 @@ dnl
  24  dnl Check for the Linux /proc filesystem
  25  dnl --------------------------------------------------------------------------
  26  AC_DEFUN(AF_LINUX_PROCFS,
  27 -[AC_MSG_CHECKING(for Linux proc filesystem)
  28 -if test "x`cat /proc/sys/kernel/ostype 2>&-`" = "xLinux"
  29 -then
  30 -       linux_procfs=yes
  31 -else
  32 -       linux_procfs=no
  33 -fi
  34 -AC_MSG_RESULT($linux_procfs)
  35 -if test $linux_procfs = yes
  36 -then
  37 +[AC_CACHE_CHECK([for Linux proc filesystem], [ac_cv_linux_procfs],
  38 +       [ac_cv_linux_procfs=no
  39 +        test "x`cat /proc/sys/kernel/ostype 2>&-`" = "xLinux" && ac_cv_linux_procfs=yes])
  40 + if test $ac_cv_linux_procfs = yes
  41 + then
  42         AC_DEFINE(HAVE_LINUX_PROCFS, 1,
  43                 [Define if you have the Linux /proc filesystem.])
  44  fi])
  45 --
  46 2.7.4
  47