mirror of
https://github.com/espressif/esp-idf.git
synced 2026-04-27 11:03:11 +00:00
Frantisek Hrbata
0505ced81d
In CMake v2's recursive component evaluation model, when a component
triggers the inclusion of another component via idf_component_include(),
the child component's directory scope inherits variables from the
caller's scope chain through the idf_component_include() function scope
and add_subdirectory().
The vfs component's Linux target block used list(APPEND ...) without
first initializing the srcs, inc, and priv_inc variables. This was
harmless when vfs was evaluated before esp_stdio, but after commit
5fac0b7386 ("feat(console): Move IO initialization outside of the
console component"), esp_stdio became a real component for the Linux
target and started calling idf_component_include(vfs). When esp_stdio
is evaluated first, its srcs variable (containing stdio_port.c and
linux/esp_stdio_linux.c) leaks into vfs's scope, causing the build
to fail with "Cannot find source file: components/vfs/stdio_port.c".
Fix by explicitly initializing all local variables at the top of the
Linux target block before appending to them.
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>