Cscope
Linux Source Code on macOS
wget https://cdn.kernel.org/pub/linux/kernel/v2.6/linux-2.6.11.tar.xz
tar xf linux-2.6.11.tar.xz
cd linux-2.6.11
find . \
-path "./arch/*" ! -path "./arch/x86*" -prune -o \
-path "./Documentation*" -prune -o \
-path "./scripts*" -prune -o \
-path "./drivers*" -prune -o \
-name "*.[chxsS]" -print >./cscope.files
cscope -b -q -k
Since macOS’s file system is case-insensitive and Linux kernel has some files whose have the same case-insensitive file names. The following files can’t exist on macOS.
include/linux/netfilter_ipv4/ipt_connmark.h
include/linux/netfilter_ipv4/ipt_TOS.h
include/linux/netfilter_ipv4/ipt_TCPMSS.h
include/linux/netfilter_ipv4/ipt_MARK.h
include/linux/netfilter_ipv4/ipt_ECN.h
include/linux/netfilter_ipv4/ipt_DSCP.h
include/linux/netfilter_ipv6/ip6t_MARK.h
net/ipv4/netfilter/ipt_tcpmss.c
net/ipv4/netfilter/ipt_ecn.c
net/ipv4/netfilter/ipt_dscp.c
net/ipv4/netfilter/ipt_connmark.c
net/ipv4/netfilter/ipt_TOS.c
net/ipv4/netfilter/ipt_MARK.c
net/ipv6/netfilter/ip6t_MARK.c
C++ Hacking
rm -fr *cscope*;find -name '*.h' -or -name '*.cc' > cscope.files; cscope -b -q;rm cscope.files;