diff --git a/rpm/fedora/zfs-kmod.spec.in b/rpm/fedora/zfs-kmod.spec.in
index 6a8e570a6a..88ab3b24b1 100644
--- a/rpm/fedora/zfs-kmod.spec.in
+++ b/rpm/fedora/zfs-kmod.spec.in
@@ -44,7 +44,7 @@ BuildRequires:  spl-devel-kmod = %{version}-%{release}
 # Kmodtool does its magic here.  A patched version of kmodtool is shipped
 # with the source rpm until kmod development packages are supported upstream.
 # https://bugzilla.rpmfusion.org/show_bug.cgi?id=2714
-%{expand:%(sh %{SOURCE10} --target %{_target_cpu} --repo %{repo} --kmodname %{name} --devel %{?prefix:--prefix "%{?prefix}"} %{?buildforkernels:--%{buildforkernels}} %{?kernels:--for-kernels "%{?kernels}"} 2>/dev/null) }
+%{expand:%(sh %{SOURCE10} --target %{_target_cpu} --repo %{repo} --kmodname %{name} --devel %{?prefix:--prefix "%{?prefix}"} %{?buildforkernels:--%{buildforkernels}} %{?kernels:--for-kernels "%{?kernels}"} %{?kernelbuildroot:--buildroot "%{?kernelbuildroot}"} 2>/dev/null) }
 
 
 %description
@@ -55,7 +55,7 @@ This package contains the ZFS kernel modules.
 %{?kmodtool_check}
 
 # Print kmodtool output for debugging purposes:
-sh %{SOURCE10}  --target %{_target_cpu}  --repo %{repo} --kmodname %{name} --devel %{?buildforkernels:--%{buildforkernels}} %{?kernels:--for-kernels "%{?kernels}"} 2>/dev/null
+sh %{SOURCE10}  --target %{_target_cpu}  --repo %{repo} --kmodname %{name} --devel %{?buildforkernels:--%{buildforkernels}} %{?kernels:--for-kernels "%{?kernels}"} %{?kernelbuildroot:--buildroot "%{?kernelbuildroot}"} 2>/dev/null
 
 %if %{with debug}
     %define debug --enable-debug
@@ -69,6 +69,28 @@ sh %{SOURCE10}  --target %{_target_cpu}  --repo %{repo} --kmodname %{name} --dev
     %define debug_dmu_tx --disable-debug-dmu-tx
 %endif
 
+#
+# Allow the overriding of spl locations
+#
+%if %{defined require_splver}
+%define splver %{require_splver}
+%else
+%define splver %{version}
+%endif
+
+%if %{defined require_spldir}
+%define spldir %{require_spldir}
+%else
+%define spldir %{_usrsrc}/spl-%{splver}
+%endif
+
+%if %{defined require_splobj}
+%define splobj %{require_splobj}
+%else
+%define splobj %{spldir}/${kernel_version%%___*}
+%endif
+
+
 # Leverage VPATH from configure to avoid making multiple copies.
 %define _configure ../%{module}-%{version}/configure
 
@@ -85,8 +107,8 @@ for kernel_version in %{?kernel_versions}; do
         --with-config=kernel \
         --with-linux="${kernel_version##*___}" \
         --with-linux-obj="${kernel_version##*___}" \
-        --with-spl="/usr/src/spl-%{version}" \
-        --with-spl-obj="/usr/src/spl-%{version}/${kernel_version%%___*}" \
+        --with-spl="%{spldir}" \
+        --with-spl-obj="%{splobj}" \
         %{debug} \
         %{debug_dmu_tx}
     make %{?_smp_mflags}
diff --git a/rpm/generic/zfs-kmod.spec.in b/rpm/generic/zfs-kmod.spec.in
index 9c427f76f5..cec3f3f71d 100644
--- a/rpm/generic/zfs-kmod.spec.in
+++ b/rpm/generic/zfs-kmod.spec.in
@@ -47,7 +47,7 @@ BuildRequires:             spl-devel-kmod = %{version}
 # Kmodtool does its magic here.  A patched version of kmodtool is shipped
 # with the source rpm until kmod development packages are supported upstream.
 # https://bugzilla.rpmfusion.org/show_bug.cgi?id=2714
-%{expand:%(bash %{SOURCE10} --target %{_target_cpu} --kmodname %{name} --devel %{?prefix:--prefix "%{?prefix}"} %{?kernels:--for-kernels "%{?kernels}"} 2>/dev/null) }
+%{expand:%(bash %{SOURCE10} --target %{_target_cpu} --kmodname %{name} --devel %{?prefix:--prefix "%{?prefix}"} %{?kernels:--for-kernels "%{?kernels}"} %{?kernelbuildroot:--buildroot "%{?kernelbuildroot}"} 2>/dev/null) }
 
 
 %description
@@ -58,7 +58,7 @@ This package contains the ZFS kernel modules.
 %{?kmodtool_check}
 
 # Print kmodtool output for debugging purposes:
-bash %{SOURCE10}  --target %{_target_cpu}  --repo %{repo} --kmodname %{name} --devel %{?prefix:--prefix "%{?prefix}"} %{?kernels:--for-kernels "%{?kernels}"} 2>/dev/null
+bash %{SOURCE10}  --target %{_target_cpu}  --repo %{repo} --kmodname %{name} --devel %{?prefix:--prefix "%{?prefix}"} %{?kernels:--for-kernels "%{?kernels}"} %{?kernelbuildroot:--buildroot "%{?kernelbuildroot}"} 2>/dev/null
 
 %if %{with debug}
     %define debug --enable-debug
@@ -72,6 +72,28 @@ bash %{SOURCE10}  --target %{_target_cpu}  --repo %{repo} --kmodname %{name} --d
     %define debug_dmu_tx --disable-debug-dmu-tx
 %endif
 
+#
+# Allow the overriding of spl locations
+#
+%if %{defined require_splver}
+%define splver %{require_splver}
+%else
+%define splver %{version}
+%endif
+
+%if %{defined require_spldir}
+%define spldir %{require_spldir}
+%else
+%define spldir %{_usrsrc}/spl-%{splver}
+%endif
+
+%if %{defined require_splobj}
+%define splobj %{require_splobj}
+%else
+%define splobj %{spldir}/${kernel_version%%___*}
+%endif
+
+
 # Leverage VPATH from configure to avoid making multiple copies.
 %define _configure ../%{module}-%{version}/configure
 
@@ -98,8 +120,8 @@ for kernel_version in %{?kernel_versions}; do
         fi)" \
         --with-linux-obj="/lib/modules/${kernel_version%%___*}/build" \
 %endif
-        --with-spl="/usr/src/spl-%{version}" \
-        --with-spl-obj="/usr/src/spl-%{version}/${kernel_version%%___*}" \
+        --with-spl="%{spldir}" \
+        --with-spl-obj="%{splobj}" \
         %{debug} \
         %{debug_dmu_tx}
     make %{?_smp_mflags}
diff --git a/scripts/kmodtool b/scripts/kmodtool
index 2fe014c7f0..6b73780980 100755
--- a/scripts/kmodtool
+++ b/scripts/kmodtool
@@ -37,6 +37,7 @@ kernel_versions_to_build_for=
 prefix=
 filterfile=
 target=
+buildroot=
 
 error_out()
 {
@@ -305,9 +306,9 @@ print_customrpmtemplate ()
 {
 	for kernel in ${1}
 	do
-		if 	[[ -e "/usr/src/kernels/${kernel}" ]] ; then
+		if [[ -e "${buildroot}/usr/src/kernels/${kernel}" ]] ; then
 			# this looks like a Fedora/RH kernel -- print a normal template (which includes the proper BR) and be happy :)
-			kernel_versions="${kernel_versions}${kernel}___%{_usrsrc}/kernels/${kernel} "
+			kernel_versions="${kernel_versions}${kernel}___${buildroot}%{_usrsrc}/kernels/${kernel} "
 
 			# parse kernel versions string and print template
 			local kernel_verrelarch=${kernel%%${kernels_known_variants}}
@@ -382,7 +383,6 @@ myprog_help ()
 	echo "Usage: $(basename ${0}) [OPTIONS]"
 	echo $'\n'"Creates a template to be used during kmod building"
 	echo $'\n'"Available options:"
-	# FIXME	echo " --datadir <dir>     -- look for our shared files in <dir>"
 	echo " --filterfile <file>  -- filter the results with grep --file <file>"
 	echo " --for-kernels <list> -- created templates only for these kernels"
 	echo " --kmodname <file>    -- name of the kmod (required)"
@@ -390,6 +390,7 @@ myprog_help ()
 	echo " --noakmod            -- no akmod package"
 	echo " --repo <name>        -- use buildsys-build-<name>-kerneldevpkgs"
 	echo " --target <arch>      -- target-arch (required)"
+	echo " --buildroot <dir>    -- Build root (place to look for build files)"
 }
 
 while [ "${1}" ] ; do
@@ -478,6 +479,11 @@ while [ "${1}" ] ; do
 			shift
 			build_kernels="current"
 			;;
+		--buildroot)
+			shift
+			buildroot="${1}"
+			shift
+			;;
 		--help)
 			myprog_help
 			exit 0