sane-backends: fix usbid file generation

On some build systems (build bots, Debian Buster for example) the
current mechanism in the Build/Install define doesn't run. Replace it
with shell fu that works.

Issue was reported, see [1].

[1] https://github.com/openwrt/packages/issues/16085

Signed-off-by: Sebastian Kemper <redacted>

diff --git a/utils/sane-backends/Makefile b/utils/sane-backends/Makefile
index 214e2269d6cf2c9383abc79c5508f0a57f546eec..7bac49fc7b8d4f89d1e28909974d2a4f7f83b525 100644 (file)
--- a/utils/sane-backends/Makefile
+++ b/utils/sane-backends/Makefile
@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=sane-backends
 PKG_VERSION:=1.0.32
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://gitlab.com/sane-project/backends/uploads/104f09c07d35519cc8e72e604f11643f
@@ -194,12 +194,12 @@ endef
 define Build/Install
        $(call Build/Install/Default)
        mkdir -p $(PKG_INSTALL_DIR)/usr/share/sane
-       $(foreach file, $(filter-out %/unsupported.desc ,$(wildcard $(PKG_BUILD_DIR)/doc/descriptions/*.desc)),
-               sed -rn -e '/^:usbid[[:blank:]]+"?0x(....)"?[[:blank:]]+"?0x(....)"?.*/{s//\1 \2/;p}' $(file) | \
-                       sort -u > $(PKG_INSTALL_DIR)/usr/share/sane/$(basename $(notdir $(file))).usbid; \
-               awk '{ print $$$$2 > "$(PKG_INSTALL_DIR)/usr/share/sane/"$$$$1"-$(basename $(notdir $(file))).usbid" }' \
-                       $(PKG_INSTALL_DIR)/usr/share/sane/$(basename $(notdir $(file))).usbid ;
-       )
+       cd $(PKG_BUILD_DIR)/doc/descriptions && for file in *.desc; do \
+               sed -rn -e '/^:usbid[[:blank:]]+"?0x(....)"?[[:blank:]]+"?0x(....)"?.*/{s//\1 \2/;p}' $$$$file | \
+                       sort -u > $(PKG_INSTALL_DIR)/usr/share/sane/$$$${file/\.desc/}.usbid; \
+               awk -v path=$(PKG_INSTALL_DIR)/usr/share/sane -v file=$$$${file/\.desc/}.usbid '{ print $$$$2 > path"/"$$$$1"-"file }' \
+                       $(PKG_INSTALL_DIR)/usr/share/sane/$$$${file/\.desc/}.usbid ; \
+       done
 endef
 
 define Package/libsane/install