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61 lines
984 B
Plaintext
61 lines
984 B
Plaintext
---
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sidebar_label: Environment variables
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---
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# Environment Variables
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## DCR_COMPILER
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Overrides the compiler for all languages. **Highest priority.**
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```bash
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export DCR_COMPILER=clang
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dcr build
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```
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Compiler resolution priority:
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1. `DCR_COMPILER` (env)
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2. `DCR_CC` / `DCR_CXX` / `DCR_AS` (env)
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3. `[toolchain]` (dcr.toml)
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4. `build.compiler` (dcr.toml)
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5. `PATH`
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## DCR_CC / DCR_CXX / DCR_AS
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Per-language override (lower priority than `DCR_COMPILER`, higher than `[toolchain]`).
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```bash
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export DCR_CC=gcc-14
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export DCR_CXX=g++-14
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export DCR_AS=arm-linux-gnueabihf-as
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```
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## DCR_LD / DCR_AR
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Override linker and archiver.
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```bash
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export DCR_LD=ld.lld
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export DCR_AR=llvm-ar
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```
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## DCR_DEBUG
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Enables debug mode — prints all compilation commands to stderr before execution.
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```bash
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export DCR_DEBUG=1
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dcr build
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```
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## DCR_INDEX_PATH
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Overrides the path to the registry `index.json`.
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```bash
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export DCR_INDEX_PATH=/custom/path/index.json
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```
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Default: `~/.dcr/index.json`.
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