pryre opened a new pull request, #16102:
URL: https://github.com/apache/nuttx/pull/16102
## Summary
This pull request adds CMakeLists.txt files required to build for the
`stm32l4` arch, specifically the `stm32l476rg` board.
## Impact
There should be no adverse effects from this. Build details and flags were
adapted from the existing Makefiles, using the `stm32f7` platform as a
reference.
## Testing
### Host
* OS: Arch Linux
* CPU: amd64
* Toolchain: `arm-none-eabi-*`
### Target
* Arch: STM32L4
* Board: `nucleo-l476rg`
* Config: `nsh`
### Before Changes
This target did not exist for CMake builds. I can provide Make results on
request.
### Setup
```sh
[pryre@ren] pms-r01> mkdir build
[pryre@ren] pms-r01> set -x NUTTX_DIR platform/nuttx
```
### CMake
```sh
[pryre@ren] pms-r01> cmake $NUTTX_DIR -B build
-DBOARD_CONFIG=nucleo-l476rg:nsh -GNinja
-- Initializing NuttX
Select HOST_LINUX=y
-- CMake: 3.31.6
-- Ninja: 1.12.1
-- Board: nucleo-l476rg
-- Config: nsh
-- Appdir: /---/pms-r01/platform/nuttx-apps
-- The C compiler identification is GNU 14.2.0
-- The CXX compiler identification is GNU 14.2.0
-- The ASM compiler identification is GNU
-- Found assembler: /usr/bin/arm-none-eabi-gcc
-- Configuring done (6.0s)
-- Generating done (1.0s)
-- Build files have been written to: /---/pms-r01/build
```
### Build
```sh
[pryre@ren] pms-r01> ninja -C build
ninja: Entering directory `build'
[26/1135] Building C object
arch/CMakeFiles/arch.dir/arm/src/stm32l4/stm32l4_gpio.c.obj
/---/pms-r01/platform/nuttx/arch/arm/src/stm32l4/stm32l4_gpio.c:46:11: note:
'#pragma message: CONFIG_STM32L4_USE_LEGACY_PINMAP will be deprecated migrate
board.h see tools/stm32_pinmap_tool.py'
46 | # pragma message "CONFIG_STM32L4_USE_LEGACY_PINMAP will be
deprecated migrate board.h see tools/stm32_pinmap_tool.py"
| ^~~~~~~
[1132/1135] Linking CXX executable nuttx
Memory region Used Size Region Size %age Used
flash: 215300 B 512 KB 41.07%
sram: 9676 B 96 KB 9.84%
[1135/1135] Generating System.map
```
### Run
Device can be flashed and presents a prompt as expected.
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