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pigweed / pigweed / pigweed / a1858e3730f30bfc4734d3a790d2057d534efff6
commita1858e3730f30bfc4734d3a790d2057d534efff6[log] [tgz]
authorDennis Kormalev <denk@google.com>Thu Jun 23 21:18:37 2022 +0000
committerCQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu Jun 23 21:18:37 2022 +0000
treebb47da2df0ebaf309e71653d3b6ae07b76c39197
parent39336b04b15040237cc298da9756a16945054d57 [diff]
pw_span: Include system span header only if fresh enough

Before this CL polyfill span was always included and relied on the
__cpp_lib_span define. Some older standard libraries could have this one
not defined which leads to ambiguity during compilation.
This CL fetches __cpp_lib_span version first and includes system span
header only if version is good enough, otherwise it fall backs to custom
implementation.

Change-Id: Ia20e649a2893259929f500154e2d74366feb2ca4
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/99540
Reviewed-by: Wyatt Hepler <hepler@google.com>
Pigweed-Auto-Submit: Dennis Kormalev <denk@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
1 file changed
tree: bb47da2df0ebaf309e71653d3b6ae07b76c39197
  1. build_overrides/
  2. docker/
  3. docs/
  4. pw_allocator/
  5. pw_analog/
  6. pw_android_toolchain/
  7. pw_arduino_build/
  8. pw_assert/
  9. pw_assert_basic/
  10. pw_assert_log/
  11. pw_assert_tokenized/
  12. pw_assert_zephyr/
  13. pw_base64/
  14. pw_bloat/
  15. pw_blob_store/
  16. pw_bluetooth/
  17. pw_bluetooth_hci/
  18. pw_boot/
  19. pw_boot_cortex_m/
  20. pw_build/
  21. pw_build_info/
  22. pw_build_mcuxpresso/
  23. pw_bytes/
  24. pw_checksum/
  25. pw_chrono/
  26. pw_chrono_embos/
  27. pw_chrono_freertos/
  28. pw_chrono_stl/
  29. pw_chrono_threadx/
  30. pw_chrono_zephyr/
  31. pw_cli/
  32. pw_console/
  33. pw_containers/
  34. pw_cpu_exception/
  35. pw_cpu_exception_cortex_m/
  36. pw_crypto/
  37. pw_digital_io/
  38. pw_docgen/
  39. pw_doctor/
  40. pw_env_setup/
  41. pw_file/
  42. pw_function/
  43. pw_fuzzer/
  44. pw_hdlc/
  45. pw_hex_dump/
  46. pw_i2c/
  47. pw_i2c_mcuxpresso/
  48. pw_interrupt/
  49. pw_interrupt_cortex_m/
  50. pw_interrupt_zephyr/
  51. pw_kvs/
  52. pw_libc/
  53. pw_log/
  54. pw_log_android/
  55. pw_log_basic/
  56. pw_log_null/
  57. pw_log_rpc/
  58. pw_log_string/
  59. pw_log_tokenized/
  60. pw_log_zephyr/
  61. pw_malloc/
  62. pw_malloc_freelist/
  63. pw_metric/
  64. pw_minimal_cpp_stdlib/
  65. pw_module/
  66. pw_multisink/
  67. pw_package/
  68. pw_persistent_ram/
  69. pw_polyfill/
  70. pw_preprocessor/
  71. pw_presubmit/
  72. pw_protobuf/
  73. pw_protobuf_compiler/
  74. pw_random/
  75. pw_result/
  76. pw_ring_buffer/
  77. pw_router/
  78. pw_rpc/
  79. pw_snapshot/
  80. pw_software_update/
  81. pw_span/
  82. pw_spi/
  83. pw_status/
  84. pw_stm32cube_build/
  85. pw_stream/
  86. pw_string/
  87. pw_symbolizer/
  88. pw_sync/
  89. pw_sync_baremetal/
  90. pw_sync_embos/
  91. pw_sync_freertos/
  92. pw_sync_stl/
  93. pw_sync_threadx/
  94. pw_sync_zephyr/
  95. pw_sys_io/
  96. pw_sys_io_arduino/
  97. pw_sys_io_baremetal_lm3s6965evb/
  98. pw_sys_io_baremetal_stm32f429/
  99. pw_sys_io_emcraft_sf2/
  100. pw_sys_io_mcuxpresso/
  101. pw_sys_io_stdio/
  102. pw_sys_io_stm32cube/
  103. pw_sys_io_zephyr/
  104. pw_system/
  105. pw_target_runner/
  106. pw_thread/
  107. pw_thread_embos/
  108. pw_thread_freertos/
  109. pw_thread_stl/
  110. pw_thread_threadx/
  111. pw_tls_client/
  112. pw_tls_client_boringssl/
  113. pw_tls_client_mbedtls/
  114. pw_tokenizer/
  115. pw_tool/
  116. pw_toolchain/
  117. pw_trace/
  118. pw_trace_tokenized/
  119. pw_transfer/
  120. pw_unit_test/
  121. pw_varint/
  122. pw_watch/
  123. pw_web_ui/
  124. pw_work_queue/
  125. targets/
  126. third_party/
  127. zephyr/
  128. .dockerignore ⇨ .gitignore
  129. activate.sh ⇨ bootstrap.sh
  130. .bazelignore
  131. .bazelrc
  132. .clang-format
  133. .clang-tidy
  134. .eslintrc.json
  135. .gitattributes
  136. .gitignore
  137. .gn
  138. .prettierrc.js
  139. .pylintrc
  140. activate.bat
  141. Android.bp
  142. AUTHORS
  143. bootstrap.bat
  144. bootstrap.sh
  145. BUILD.bazel
  146. BUILD.gn
  147. BUILDCONFIG.gn
  148. CMakeLists.txt
  149. Kconfig.zephyr
  150. LICENSE
  151. modules.gni
  152. OWNERS
  153. package.json
  154. PIGWEED_MODULES
  155. PW_PLUGINS
  156. README.md
  157. rollup.config.js
  158. tsconfig.json
  159. tsconfig.rollup.json
  160. WORKSPACE
  161. yarn.lock
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