fix: harden build against empty toolchain output

On some Windows systems, antivirus, endpoint-security or DLP/encryption
software intercepts short-lived toolchain processes and strips their
stdout when the build captures it through a pipe, while the same command
prints its output normally when run by hand. The tool exits successfully
but returns nothing, and each build step that reads toolchain output then
failed with a different, cryptic error far from the real cause:

- CMake configuration aborted with "Unknown arguments specified" in
  components/xtensa/project_include.cmake, or "check_expected_tool_version
  invoked with incorrect arguments" in components/esp_common.
- ldgen turned the empty objdump output into an opaque pyparsing
  "Expected 'In archive'" traceback.
- idf_tools.py silently reported the compiler/debugger version as
  "unknown", sending users into a fruitless reinstall loop.

Detect the empty result at each consumer and fail (or warn) with an
actionable message that names the likely cause and the remedy:

- tools/cmake/compiler_query.cmake: new __compiler_query() helper runs a
  compiler query and fails with a clear error on empty or failed output.
  It is a standalone module included by both the cmakev1 and cmakev2
  utilities, since the esp_common and xtensa project_include.cmake that
  call it are shared by both build systems. The xtensa if() arguments are
  now quoted so an empty result no longer collapses into a parse error.
- tools/ldgen/ldgen.py: _run_objdump() rejects empty objdump output, and
  non-empty-but-unparsable section info is caught and re-raised as a clear
  LdGenFailure instead of a raw pyparsing traceback.
- tools/idf_tools.py: empty version output now warns with the cause and
  returns UNKNOWN_VERSION instead of silently reporting "unknown".

Closes https://github.com/espressif/esp-idf/issues/18727

Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
This commit is contained in:
Frantisek Hrbata
2026-08-05 20:58:36 +08:00
committed by BOT
parent 6498d81eb4
commit 5c5d15cfc7
7 changed files with 122 additions and 20 deletions
+4
View File
@@ -7,6 +7,10 @@
# used by toolchain CMake files.
include(${CMAKE_CURRENT_LIST_DIR}/../cmake/deduplicate_flags.cmake)
# __compiler_query is shared with cmakev1. The esp_common and xtensa
# project_include.cmake files that call it are used by both build systems.
include(${CMAKE_CURRENT_LIST_DIR}/../cmake/compiler_query.cmake)
# Note: CMake does not support nested lists. The functions idf_die, idf_warn,
# idf_msg, and idf_dbg use ARGV# values because this is the only way to prevent
# arguments from being altered by CMake. ARGV and ARGN contain a flattened list