[openwrt/openwrt] u-boot.mk: fix pkg-config usage

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/f262d2aae136d2fe60c3b7314a4a0c5f30d79062

commit f262d2aae136d2fe60c3b7314a4a0c5f30d79062
Author: Andre Heider <a.heider at gmail.com>
AuthorDate: Wed Oct 13 12:51:22 2021 +0200

    u-boot.mk: fix pkg-config usage
    
    Using Host/Exports doesn't work as intended, explicitly add the
    required vars so that u-boot finds the required libraries when building
    its tools.
    
    Signed-off-by: Andre Heider <a.heider at gmail.com>
---
 include/u-boot.mk                    | 3 +++
 package/boot/uboot-mediatek/Makefile | 2 --
 package/boot/uboot-mvebu/Makefile    | 2 --
 package/boot/uboot-mxs/Makefile      | 2 --
 package/boot/uboot-zynq/Makefile     | 2 --
 5 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/include/u-boot.mk b/include/u-boot.mk
index c0a1e87bf3..8c6941b88a 100644
--- a/include/u-boot.mk
+++ b/include/u-boot.mk
@@ -45,6 +45,9 @@ UBOOT_MAKE_FLAGS = \
 	HOSTCC="$(HOSTCC)" \
 	HOSTCFLAGS="$(HOST_CFLAGS) $(HOST_CPPFLAGS) -std=gnu11" \
 	HOSTLDFLAGS="$(HOST_LDFLAGS)" \
+	STAGING_PREFIX="$(STAGING_DIR_HOST)" \
+	PKG_CONFIG_PATH="$(STAGING_DIR_HOST)/lib/pkgconfig" \
+	PKG_CONFIG_LIBDIR="$(STAGING_DIR_HOST)/lib/pkgconfig" \
 	$(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='')
 
 define Build/U-Boot/Target
diff --git a/package/boot/uboot-mediatek/Makefile b/package/boot/uboot-mediatek/Makefile
index a5801afa2d..5d9459d461 100644
--- a/package/boot/uboot-mediatek/Makefile
+++ b/package/boot/uboot-mediatek/Makefile
@@ -111,8 +111,6 @@ UBOOT_TARGETS := \
 
 UBOOT_MAKE_FLAGS += $(UBOOT_IMAGE:.fip=.bin)
 
-Build/Exports:=$(Host/Exports)
-
 define Build/fip-image
 	$(STAGING_DIR_HOST)/bin/fiptool create \
 		--soc-fw $(STAGING_DIR_IMAGE)/$(BUILD_SUBTARGET)-$(BL2_BOOTDEV)-$(BL2_DDRBLOB)ddr-bl31.bin \
diff --git a/package/boot/uboot-mvebu/Makefile b/package/boot/uboot-mvebu/Makefile
index bf03fdd2b2..e2f2a2a382 100644
--- a/package/boot/uboot-mvebu/Makefile
+++ b/package/boot/uboot-mvebu/Makefile
@@ -53,8 +53,6 @@ UBOOT_TARGETS:= \
 	espressobin \
 	uDPU
 
-Build/Exports:=$(Host/Exports)
-
 define Build/Configure
 	# enable additional options beyond <device>_defconfig
 	echo CONFIG_CMD_SETEXPR=y >> $(PKG_BUILD_DIR)/configs/$(UBOOT_CONFIG)_defconfig
diff --git a/package/boot/uboot-mxs/Makefile b/package/boot/uboot-mxs/Makefile
index f4211d3a54..3c908874fa 100644
--- a/package/boot/uboot-mxs/Makefile
+++ b/package/boot/uboot-mxs/Makefile
@@ -38,8 +38,6 @@ UBOOT_TARGETS := \
 
 UBOOT_MAKE_FLAGS += $(UBOOT_IMAGE)
 
-Build/Exports:=$(Host/Exports)
-
 define Build/InstallDev
 	$(INSTALL_DIR) $(STAGING_DIR_IMAGE)
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/$(UBOOT_IMAGE) $(STAGING_DIR_IMAGE)/$(BUILD_VARIANT)-$(UBOOT_IMAGE)
diff --git a/package/boot/uboot-zynq/Makefile b/package/boot/uboot-zynq/Makefile
index b6b1dc8b85..c605cfaeb2 100644
--- a/package/boot/uboot-zynq/Makefile
+++ b/package/boot/uboot-zynq/Makefile
@@ -60,6 +60,4 @@ endef
 define Package/u-boot/install/default
 endef
 
-Build/Exports:=$(Host/Exports)
-
 $(eval $(call BuildPackage/U-Boot))