bazel: Build with both C++17 and C++20

Move the C++ standard version configuration from on-each-target to the
.bazelrc. The on-target settings have the highest precedence and cannot
be overridden. The .bazelrc settings have the _lowest_ precedence and
can be overridden, either on the command line or on individual targets.

Use this flexibility to build with both C++17 and C++20 in presubmit.

Bug: 268249509
Change-Id: I6399e4d95acbedc9549c2074eceb9c31c8118e00
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/128373
Commit-Queue: Ted Pudlik <tpudlik@google.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
Reviewed-by: Fernando Garcia Bermudez <fgb@google.com>
4 files changed
tree: 246e0e2bae9df4692a7f1448b3a5449f769c426d
  1. .allstar/
  2. .vscode/
  3. build_overrides/
  4. docker/
  5. docs/
  6. pw_allocator/
  7. pw_analog/
  8. pw_android_toolchain/
  9. pw_arduino_build/
  10. pw_assert/
  11. pw_assert_basic/
  12. pw_assert_log/
  13. pw_assert_tokenized/
  14. pw_assert_zephyr/
  15. pw_async/
  16. pw_base64/
  17. pw_bloat/
  18. pw_blob_store/
  19. pw_bluetooth/
  20. pw_bluetooth_hci/
  21. pw_bluetooth_profiles/
  22. pw_boot/
  23. pw_boot_cortex_m/
  24. pw_build/
  25. pw_build_info/
  26. pw_build_mcuxpresso/
  27. pw_bytes/
  28. pw_checksum/
  29. pw_chrono/
  30. pw_chrono_embos/
  31. pw_chrono_freertos/
  32. pw_chrono_stl/
  33. pw_chrono_threadx/
  34. pw_chrono_zephyr/
  35. pw_cli/
  36. pw_compilation_testing/
  37. pw_console/
  38. pw_containers/
  39. pw_cpu_exception/
  40. pw_cpu_exception_cortex_m/
  41. pw_crypto/
  42. pw_digital_io/
  43. pw_docgen/
  44. pw_doctor/
  45. pw_env_setup/
  46. pw_file/
  47. pw_function/
  48. pw_fuzzer/
  49. pw_hdlc/
  50. pw_hex_dump/
  51. pw_i2c/
  52. pw_i2c_mcuxpresso/
  53. pw_ide/
  54. pw_interrupt/
  55. pw_interrupt_cortex_m/
  56. pw_interrupt_zephyr/
  57. pw_intrusive_ptr/
  58. pw_kvs/
  59. pw_libc/
  60. pw_log/
  61. pw_log_android/
  62. pw_log_basic/
  63. pw_log_null/
  64. pw_log_rpc/
  65. pw_log_string/
  66. pw_log_tokenized/
  67. pw_log_zephyr/
  68. pw_malloc/
  69. pw_malloc_freelist/
  70. pw_metric/
  71. pw_minimal_cpp_stdlib/
  72. pw_module/
  73. pw_multisink/
  74. pw_package/
  75. pw_perf_test/
  76. pw_persistent_ram/
  77. pw_polyfill/
  78. pw_preprocessor/
  79. pw_presubmit/
  80. pw_protobuf/
  81. pw_protobuf_compiler/
  82. pw_random/
  83. pw_result/
  84. pw_ring_buffer/
  85. pw_router/
  86. pw_rpc/
  87. pw_rust/
  88. pw_snapshot/
  89. pw_software_update/
  90. pw_span/
  91. pw_spi/
  92. pw_status/
  93. pw_stm32cube_build/
  94. pw_stream/
  95. pw_string/
  96. pw_symbolizer/
  97. pw_sync/
  98. pw_sync_baremetal/
  99. pw_sync_embos/
  100. pw_sync_freertos/
  101. pw_sync_stl/
  102. pw_sync_threadx/
  103. pw_sync_zephyr/
  104. pw_sys_io/
  105. pw_sys_io_arduino/
  106. pw_sys_io_baremetal_lm3s6965evb/
  107. pw_sys_io_baremetal_stm32f429/
  108. pw_sys_io_emcraft_sf2/
  109. pw_sys_io_mcuxpresso/
  110. pw_sys_io_pico/
  111. pw_sys_io_stdio/
  112. pw_sys_io_stm32cube/
  113. pw_sys_io_zephyr/
  114. pw_system/
  115. pw_target_runner/
  116. pw_thread/
  117. pw_thread_embos/
  118. pw_thread_freertos/
  119. pw_thread_stl/
  120. pw_thread_threadx/
  121. pw_tls_client/
  122. pw_tls_client_boringssl/
  123. pw_tls_client_mbedtls/
  124. pw_tokenizer/
  125. pw_tool/
  126. pw_toolchain/
  127. pw_trace/
  128. pw_trace_tokenized/
  129. pw_transfer/
  130. pw_unit_test/
  131. pw_varint/
  132. pw_watch/
  133. pw_web/
  134. pw_work_queue/
  135. seed/
  136. targets/
  137. third_party/
  138. ts/
  139. zephyr/
  140. .bazelignore
  141. .bazelrc
  142. .black.toml
  143. .clang-format
  144. .clang-tidy
  145. .eslintrc.json
  146. .git-blame-ignore-revs
  147. .gitattributes
  148. .gitignore
  149. .gn
  150. .mypy.ini
  151. .prettierrc.js
  152. .pw_ide.yaml
  153. .pylintrc
  154. activate.bat
  155. Android.bp
  156. AUTHORS
  157. bootstrap.bat
  158. bootstrap.sh
  159. BUILD.bazel
  160. BUILD.gn
  161. BUILDCONFIG.gn
  162. CMakeLists.txt
  163. jest.config.ts
  164. Kconfig.zephyr
  165. LICENSE
  166. modules.gni
  167. OWNERS
  168. package-lock.json
  169. package.json
  170. PIGWEED_MODULES
  171. PW_PLUGINS
  172. README.md
  173. rollup.config.js
  174. tsconfig.json
  175. WORKSPACE
README.md

Pigweed

Pigweed is an open source collection of embedded-targeted libraries–or as we like to call them, modules. These modules are building blocks and infrastructure that enable faster and more reliable development on small-footprint MMU-less 32-bit microcontrollers like the STMicroelectronics STM32L452 or the Nordic nRF52832.

For more information please see our website: https://pigweed.dev/.

Links