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fix: add RISC-V toolchain paths to build env for ESP32-C3 compilation 

_build_env() on Linux only set IDF_TOOLS_PATH but never added the tool
binary directories to PATH, so cmake could not find riscv32-esp-elf-g++
when compiling for ESP32-C3. Also improve ninja failure logging to show
stdout (where build errors actually appear) instead of empty stderr.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
master
David Montero 2026-04-05 20:55:38 +02:00
parent 0d83b09dd9
commit 1298be72b2
1 changed files with 20 additions and 2 deletions
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22
backend/app/services/espidf_compiler.py
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@ -368,9 +368,26 @@ class ESPIDFCompiler:
for tc_dir in Path(tools_path).glob('tools/riscv32-esp-elf/*/riscv32-esp-elf/bin'):
env['PATH'] = str(tc_dir) + os.pathsep + env['PATH']
else:
# Linux/Docker: source export.sh environment
# Linux/Docker: explicitly add toolchain bin dirs to PATH so cmake
# can find the cross-compilers even when the process wasn't started
# with export.sh (e.g. after a uvicorn restart or in tests).
tools_path = os.environ.get('IDF_TOOLS_PATH', os.path.expanduser('~/.espressif'))
env['IDF_TOOLS_PATH'] = tools_path
if os.path.isdir(tools_path):
extra_paths: list[str] = []
# Xtensa toolchain (ESP32, ESP32-S3)
for tc_dir in Path(tools_path).glob('tools/xtensa-esp32-elf/*/xtensa-esp32-elf/bin'):
extra_paths.append(str(tc_dir))
for tc_dir in Path(tools_path).glob('tools/xtensa-esp-elf/*/xtensa-esp-elf/bin'):
extra_paths.append(str(tc_dir))
# RISC-V toolchain (ESP32-C3)
for tc_dir in Path(tools_path).glob('tools/riscv32-esp-elf/*/riscv32-esp-elf/bin'):
extra_paths.append(str(tc_dir))
# ESP-IDF host tools (esptool, partition_table, etc.)
for tool_dir in Path(tools_path).glob('tools/*/*/bin'):
extra_paths.append(str(tool_dir))
if extra_paths:
env['PATH'] = os.pathsep.join(extra_paths) + os.pathsep + env.get('PATH', '')
return env
@ -584,7 +601,8 @@ class ESPIDFCompiler:
all_stderr = '\n'.join(filtered_stderr_lines)
if ninja_result.returncode != 0:
logger.error(f'[espidf] ninja build failed:\n{ninja_result.stderr}')
logger.error(f'[espidf] ninja build failed (stdout):\n{ninja_result.stdout[-4000:]}')
logger.error(f'[espidf] ninja build failed (stderr):\n{ninja_result.stderr[-2000:]}')
return {
'success': False,
'error': 'ESP-IDF build failed',