For the Linux target, we currently attempt to fallback to older C/CXX
lagnuage standards in the __build_set_lang_version() function. The
language standard support is checked using CMake's language-specific
functions, such as check_c_compiler_flag(). These functions require the
language to be enabled[1] in CMake beforehand, which is done by calling
project() or by enabling the languages later with enable_language(). At
present, we use enable_language() to enable C and CXX languages in
CMake, allowing us to set the standard early, before invoking project().
However, newer CMake versions (>3.29) issue a warning[2] if
enable_language() is called before project(), as noted in CMP0165[3].
It should generally be acceptable to call __build_set_lang_version()
after __project(), but doing so would alter the behavior of the
COMPILE_OPTIONS also for non-Linux targets. Currently, users can
add to COMPILE_OPTIONS even before calling project() in the project's
CMakeLists.txt and the options will be in the desired order. In other
words, appending to COMPILE_OPTIONS can occur either before or after
calling project() in the project's CMakeLists.txt, with the outcome
remaining consistent. This means the user's settings will appear later
and take priority. However, if __build_set_lang_version() is called
after __project(), the user's COMPILE_OPTIONS settings would be
overridden if set before calling project(). Our documentation[4] explicitly
states that COMPILE_OPTIONS and similar properties should be modified
using idf_build_set_property() after calling project() to prevent
default values from overwriting them.
Even with this guidance, some existing components that modify
COMPILE_OPTIONS before invoking project() might be impacted by this
change. Therefore, separate the language standard settings for non-Linux
and Linux targets. For non-Linux targets, these settings are applied in
__build_set_default_build_specifications(), maintaining the current
behavior. For the Linux target, the language standard is set with
__linux_build_set_lang_version() after calling __project(), ensuring the
languages are already enabled in CMake and no warning is issued. Since the Linux
target is still in preview, this approach should be acceptable,
especially with the existing documentation[4].
Closes https://github.com/espressif/esp-idf/issues/15488
[1] https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html#languages
[2] https://gitlab.kitware.com/cmake/cmake/-/merge_requests/9396
[3] https://cmake.org/cmake/help/latest/policy/CMP0165.html#policy:CMP0165
[4] https://docs.espressif.com/projects/esp-idf/en/v5.4/esp32/api-guides/
build-system.html#overriding-default-build-specifications
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
This feature is useful for 3rd-party software to run GDB with predefined
options that described in project_description.json file
allow to pass custom options to "idf.py gdb":
--gdb-commands: command line arguments for gdb. (without changes)
-ex: pass command to gdb.
-x: pass gdbinit file to gdb. Alias for old --gdbinit command
By default, esp-idf-size.ng displays all sections individually. This can
be confusing, especially if CONFIG_SOC_MEM_NON_CONTIGUOUS_SRAM is
enabled, resulting in sections like .dram0.data and .dram1.data being
abbreviated as two .data sections in the size report. To avoid confusion
for idf.py and cmake users, pass the --unify option to the underlying
esp_idf_size.ng by default.
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
For Linux builds if the embedded data length exceeded 16-bit value then
the build used to fail with following error:
build/x509_crt_bundle.S: Assembler messages:
build/x509_crt_bundle.S:4201: Warning: value 0x1056e truncated to 0x56e
GNU ASM for X86 systems treats .word attribute as of size 2 bytes, this commit
uses .long attribute to take the size to 4 bytes.
This commit enables the standad VERSION argument for the project() macro
in ESP-IDF. The VERSION argument is compilant with the requirements of
cmake 3.16. This commit also adds new test cases for verifying the
validity of the version argument.
Merges https://github.com/espressif/esp-idf/pull/12461
Co-authored-by: Sudeep Mohanty <sudeep.mohanty@espressif.com>
Add new "all_component_info" dictionary into the
project_description.json file. It contains information about all
registered components presented in the __COMPONENT_TARGETS list.
Since components in this list are not fully evaluated, because only the first
stage of cmakefiles processing is done, it does not contain the same information
as the "build_component_info" dictionary. The "type", "file" and "sources" variables
are missing.
Most of the properties are already attached to the component target, so
this only adds INCLUDE_DIRS property to the target during the first cmakefiles
processing stage.
The "all_component_info" dict is generated in a separate function, even
though the original function for "build_component_info" could be
adjusted. This introduces a little bit of boilerplate, but keeps it
logically separated and probably easier if we want to extend it in the
future.
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
This extends information provided in the project_description.json file.
Newly added information can be used in the SBOM generating tool and
also to improve hints regarding the the component dependency issues.
Added fields
version:
This adds versioning to the project_description.json file,
so it's easy to identify if it contains the required information.
project_version:
Can be used as a version for the resulting binary e.g. `hello_world.bin`.
idf_path:
This one is probably not necessary, but it allows tools to run even without
esp-idf environment exported(e.g. export.sh).
c_compiler:
The `CMAKE_C_COMPILER` value with full path to the compiler binary. This can
be used to get information about toolchain, which was used to build the project.
common_component_reqs:
List of common components as presented in cmake's __COMPONENT_REQUIRES_COMMON
and set in tools/cmake/build.cmake:__build_init().
build_component_info:
Detailed information about components used during build. It's a
dictionary with the component name as a key and each component has
a dictionary with detailed information. Following is an example for
the efuse component.
"efuse": {
"alias": "idf::efuse",
"target": "___idf_efuse",
"prefix": "idf",
"dir": "/home/fhrbata/work/esp-idf/components/efuse",
"type": "LIBRARY",
"lib": "__idf_efuse",
"reqs": [],
"priv_reqs": [ "bootloader_support", "soc", "spi_flash" ],
"managed_reqs": [],
"managed_priv_reqs": [],
"file": "/home/fhrbata/work/blink/build/esp-idf/efuse/libefuse.a",
"sources": [ "/home/fhrbata/work/esp-idf/components/efuse/esp32s3/esp_efuse_table.c", ... ],
"include_dirs": [ "include", "esp32s3/include" ]
}
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
Currently make_json_list() returns '[ "" ]' for empty cmake list. Fix this
so empty json list is returned instead.
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
* reverted old faulty mechanism to set different
standard according to the toolchain
* Using -std=gnu++2b now for both gcc and clang
* Added a build test app to check the C++ standard in IDF
* Updated english docs to reflect the change to C++23
ADDITIONAL_MAKE_CLEAN_FILES is deprecated and only worked with make.
Replaced with the new ADDITIONAL_CLEAN_FILES (CMake 3.15) which also works with ninja.
