jool: fix PKG_BUILD_DIR to avoid kernel ABI mismatch

As jool builds a kernel module, a PKG_BUILD_DIR under KERNEL_BUILD_DIR must
be used to avoid reusing build artifacts when switching to a different
target of the same architecture. Otherwise, kernel ABI mismatches may
result, leading to an unusuable module, or build failures like the
following:

    Package kmod-jool is missing dependencies for the following libraries:
    crypto_hash.ko

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>

diff --git a/net/jool/Makefile b/net/jool/Makefile
index aa0e1b97703f61e91f2bfdb4cba6b00d1ad39ebb..0a6d69156869d13cc06627dad0e711f569cf8e3f 100644 (file)
--- a/net/jool/Makefile
+++ b/net/jool/Makefile
@@ -8,7 +8,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=jool
 PKG_VERSION:=2016.12.17
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_LICENSE:=GPL-3.0
 PKG_LICENSE_FILES:=COPYING
@@ -19,7 +19,7 @@ PKG_SOURCE_VERSION:=66a791c90751d7941b08c142babe1deec73d0996
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_SOURCE_VERSION)
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_SOURCE_VERSION).tar.xz
 
-PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_SOURCE_SUBDIR)
+PKG_BUILD_DIR=$(KERNEL_BUILD_DIR)/$(PKG_SOURCE_SUBDIR)
 PKG_BUILD_PARALLEL:=1
 PKG_BUILD_DEPENDS:=USE_UCLIBC:argp-standalone USE_MUSL:argp-standalone