[LEDE-DEV] [PATCH v2] package-ipkg: Do not fail build without base-files

[Florian Fainelli]

If the base-files package is not selected, we will fail executing the
very first postinst script:

make[3]: Leaving directory `/local/users/fainelli/openwrt/trunk'
cp -fpR
/local/users/fainelli/openwrt/trunk/build_dir/target-arm_xscale_musl-1.1.15_eabi/root-orion
/local/users/fainelli/openwrt/trunk/build_dir/target-arm_xscale_musl-1.1.15_eabi/root.orig-orion
./usr/lib/opkg/info/busybox.postinst: line 3:
/local/users/fainelli/openwrt/trunk/build_dir/target-arm_xscale_musl-1.1.15_eabi/root-orion/lib/functions.sh:
No such file or directory
./usr/lib/opkg/info/busybox.postinst: line 4: default_postinst: command
not found
postinst script ./usr/lib/opkg/info/busybox.postinst has failed with
exit code 127
make[2]: *** [package/install] Error 1

Check for the existence of lib/functions.sh, and if it does not exist,
just bail out gracefully.

Signed-off-by: Florian Fainelli <f.fainelli at gmail.com>
---
Changes in v2:

- be less intrusive, just bail out if function.sh cannot be found/executed

 include/package-ipkg.mk | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/package-ipkg.mk b/include/package-ipkg.mk
index afd2d4ef7a21..a8871ec71620 100644
--- a/include/package-ipkg.mk
+++ b/include/package-ipkg.mk
@@ -200,11 +200,13 @@ $(_endef)
 		( \
 			echo "#!/bin/sh"; \
 			echo "[ \"\$$$${IPKG_NO_SCRIPT}\" = \"1\" ] && exit 0"; \
+			echo "[ -x "\$$$${IPKG_INSTROOT}/lib/functions.sh" ] || exit 0"; \
 			echo ". \$$$${IPKG_INSTROOT}/lib/functions.sh"; \
 			echo "default_postinst \$$$$0 \$$$$@"; \
 		) > postinst; \
 		( \
 			echo "#!/bin/sh"; \
+			echo "[ -x "\$$$${IPKG_INSTROOT}/lib/functions.sh" ] || exit 0"; \
 			echo ". \$$$${IPKG_INSTROOT}/lib/functions.sh"; \
 			echo "default_prerm \$$$$0 \$$$$@"; \
 		) > prerm; \
-- 
2.10.2