From: Brian Behlendorf <behlendorf1@llnl.gov>
Date: Fri, 30 Nov 2012 04:19:25 +0000 (-0800)
Subject: Verify --with-linux source directory exists
X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=commitdiff_plain;h=56a517ae3ab9b2d848a5e671d276396970ed4718;p=zfs.git

Verify --with-linux source directory exists

Previously this check was only performed when ./configure was
attempting to autodetect your kernel source directory.  But we
should also handle the case where --with-linux was provided
and is obviously wrong.  This way we catch the error before
invoking make and compiling the source with an incorrect
autoconf results.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes zfsonlinux/spl#162
---

diff --git a/config/kernel.m4 b/config/kernel.m4
index 34969c3..2312730 100644
--- a/config/kernel.m4
+++ b/config/kernel.m4
@@ -146,11 +146,7 @@ AC_DEFUN([ZFS_AC_KERNEL], [
 		AS_IF([test -n "$sourcelink" && test -e ${sourcelink}], [
 			kernelsrc=`readlink -f ${sourcelink}`
 		], [
-			AC_MSG_RESULT([Not found])
-			AC_MSG_ERROR([
-	*** Please make sure the kernel devel package for your distribution
-	*** is installed then try again.  If that fails you can specify the
-	*** location of the kernel source with the '--with-linux=PATH' option.])
+			kernelsrc="[Not found]"
 		])
 	], [
 		AS_IF([test "$kernelsrc" = "NONE"], [
@@ -159,6 +155,13 @@ AC_DEFUN([ZFS_AC_KERNEL], [
 	])
 
 	AC_MSG_RESULT([$kernelsrc])
+	AS_IF([test ! -d "$kernelsrc"], [
+		AC_MSG_ERROR([
+	*** Please make sure the kernel devel package for your distribution
+	*** is installed then try again.  If that fails you can specify the
+	*** location of the kernel source with the '--with-linux=PATH' option.])
+	])
+
 	AC_MSG_CHECKING([kernel build directory])
 	AS_IF([test -z "$kernelbuild"], [
 		AS_IF([test -e "/lib/modules/$(uname -r)/build"], [