The main motivation is to drop and stop maintaining
"100-debian_shared_lib.patch". It lacks the logic to include custom
implementation of several functions like pcap_strlcpy() which can cause
build failures when glibc is used [2]
CAN and CAN-USB support related symbols are now handled by general linux
support, see [1]
"-ffunction-sections -fdata-sections" were removed as they should help
much for shared libraries
Size comparison before and after the change
-rw-r--r-- 1 yunion yunion 238042 Oct 18 11:42 ipkg-x86_64/libpcap/usr/lib/libpcap.so.1
lrwxrwxrwx 1 yunion yunion 16 Oct 18 13:03 ipkg-x86_64/libpcap/usr/lib/libpcap.so.1 -> libpcap.so.1.9.1
-rwxr-xr-x 1 yunion yunion 229867 Oct 18 13:03 ipkg-x86_64/libpcap/usr/lib/libpcap.so.1.9.1
[1] On Linux, handle all CAN captures with pcap-linux.c, in cooked mode,
93ca5ff703
[2] https://github.com/openwrt/packages/issues/10270
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
