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Clarify -Cllvm-args forwarding to GCC in Readme #803

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Nov 23, 2025
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Clarify -Cllvm-args forwarding to GCC in Readme #803

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Clarify -Cllvm-args forwarding to GCC in Readme
harin-ramesh Nov 23, 2025
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docs: Move -Cllvm-args forwarding explanation to tips.md
harin-ramesh Nov 23, 2025
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2 changes: 1 addition & 1 deletion Readme.md
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Expand Up @@ -159,7 +159,7 @@ $ LIBRARY_PATH="[gcc-path value]" LD_LIBRARY_PATH="[gcc-path value]" rustc +$(ca

* _**CG_GCCJIT_DUMP_ALL_MODULES**_: Enables dumping of all compilation modules. When set to "1", a dump is created for each module during compilation and stored in `/tmp/reproducers/`.
* _**CG_GCCJIT_DUMP_MODULE**_: Enables dumping of a specific module. When set with the module name, e.g., `CG_GCCJIT_DUMP_MODULE=module_name`, a dump of that specific module is created in `/tmp/reproducers/`.
* _**CG_RUSTFLAGS**_: Send additional flags to rustc. Can be used to build the sysroot without unwinding by setting `CG_RUSTFLAGS=-Cpanic=abort`.
* _**CG_RUSTFLAGS**_: Send additional flags to rustc. Can be used to build the sysroot without unwinding by setting `CG_RUSTFLAGS=-Cpanic=abort`. Note that `-Cllvm-args` flags are forwarded to GCC.
* _**CG_GCCJIT_DUMP_TO_FILE**_: Dump a C-like representation to /tmp/gccjit_dumps and enable debug info in order to debug this C-like representation.
* _**CG_GCCJIT_DUMP_RTL**_: Dumps RTL (Register Transfer Language) for virtual registers.
* _**CG_GCCJIT_DUMP_RTL_ALL**_: Dumps all RTL passes.
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