I have a Bazel-based C project and I want to compile it with both gcc and clang on Linux. To switch between compilers, I prefix the invocation with CC=<compiler, like so:
CC=clang bazel build //my-package:my-target
This works as expected, except I also invoke a Bazel rule with the copts parameter:
cc_binary(
name = "my-target",
srcs = [
"my-src.c",
],
copts = [
"-std=c89",
"-Wno-unused-label",
"-Wno-unused-variable",
"-Wno-unused-but-set-variable",
"-Wno-misleading-indentation",
],
)
This works, but I get "unknown warning option" messages from clang:
warning: unknown warning option '-Wno-unused-but-set-variable'; did you mean '-Wno-unused-const-variable'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-misleading-indentation'; did you mean '-Wno-binding-in-condition'? [-Wunknown-warning-option]
Is it possible to specify copts arguments conditional on the C compiler used for the specific Bazel invocation?
