generate compile_commands.json from makefile for clangd
Basically, it iterates makefile to find every target, run make target --print-all GEN_COMPILE_COMMANDS=true for each one, parse outputs to collect all the compile commands, and write each command into compile_commands.json with the format required by clangd
usage: gen_compile_commands.py [-h] [-f MAKEFILE] [-c [COMPILERS [COMPILERS ...]]]
generate compile_commands.json.
optional arguments:
-h, --help show this help message and exit
-f MAKEFILE, --makefile MAKEFILE
specify makefile, leave it empty to parse the makefile under current folder
-c [COMPILERS [COMPILERS ...]], --compilers [COMPILERS [COMPILERS ...]]
specify the compiler executable names