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clangclangd

How to add OS-specific complier flags in .clangd file?

I configured clangd using nvim-lspconfig. Now I would like to enable AVX support for certain projects in Linux.

How can I detect OS type in .clangd file, and then add -mavx flag only when it is Linux?

CompileFlags:
  Add: [-xavx]
Solution

  • I think it would be good to do that by leveraging an external script or a build system which is able to detect OS and construct if. As for Makefile:

    arch := $(shell uname -m)

ifeq ($(arch), arm64)
define CLANG_FLAGS
CompileFlags:
    Add: [-Wall]
endef
else
define CLANG_FLAGS
CompileFlags:
    Add: [-Wall, -mavx]
endef
endif

config:
    @$(file > .clangd,$(CLANG_FLAGS))

    To generate an OS-specific .clangd, just run make config.