1# Copyright 2022 The Pigweed Authors 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); you may not 4# use this file except in compliance with the License. You may obtain a copy of 5# the License at 6# 7# https://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12# License for the specific language governing permissions and limitations under 13# the License. 14 15import("//build_overrides/pi_pico.gni") 16import("//build_overrides/pigweed.gni") 17 18import("$dir_pw_build/target_types.gni") 19 20# TODO(amontanez): This can go away if the GN build can be upstreamed to the 21# Pi Pico repo. 22_CWD = "${PICO_SRC_DIR}/src/rp2_common/pico_stdio" 23 24import("${PICO_ROOT}/src/common/pico_stdlib/pico_stdio.gni") 25 26config("public_include_dirs") { 27 include_dirs = [ "${_CWD}/include" ] 28 defines = [ "${PICO_STDIO}=1" ] 29} 30 31config("printf_wrappers") { 32 ldflags = [ 33 "-Wl,--wrap=printf", 34 "-Wl,--wrap=vprintf", 35 "-Wl,--wrap=puts", 36 "-Wl,--wrap=putchar", 37 "-Wl,--wrap=getchar", 38 ] 39} 40 41# TODO(amontanez): This is definitely a facade. For now, just have header and 42# header+impl build targets to simulate. 43pw_source_set("headers") { 44 public_configs = [ 45 ":public_include_dirs", 46 "${PICO_ROOT}/gn:disable_warnings", 47 ] 48 public_deps = [ 49 "${PICO_ROOT}/src/common/pico_base", 50 "${PICO_ROOT}/src/rp2_common/pico_platform", 51 ] 52 53 public = [ 54 "${_CWD}/include/pico/stdio.h", 55 "${_CWD}/include/pico/stdio/driver.h", 56 ] 57} 58 59pw_source_set("pico_stdio") { 60 public_configs = [ "${PICO_ROOT}/gn:disable_warnings" ] 61 all_dependent_configs = [ ":printf_wrappers" ] 62 public_deps = [ ":headers" ] 63 deps = [ 64 "${PICO_ROOT}/src/common/pico_sync", 65 "${PICO_ROOT}/src/common/pico_time", 66 "${PICO_ROOT}/src/rp2_common/pico_printf", 67 ] 68 if (PICO_STDIO == ENUM_LIB_PICO_STDIO.UART) { 69 deps += [ "${PICO_ROOT}/src/rp2_common/pico_stdio_uart" ] 70 } else if (PICO_STDIO == ENUM_LIB_PICO_STDIO.USB) { 71 deps += [ "${PICO_ROOT}/src/rp2_common/pico_stdio_usb" ] 72 } else if (PICO_STDIO == ENUM_LIB_PICO_STDIO.SEMIHOSTING) { 73 deps += [ "${PICO_ROOT}/src/rp2_common/pico_stdio_semihosting" ] 74 } 75 sources = [ "${_CWD}/stdio.c" ] 76 77 # Due to disabling CRLF support. 78 cflags = [ "-Wno-unused-parameter" ] 79} 80