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54 lines
1.4 KiB
54 lines
1.4 KiB
8 months ago
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# Copyright 2021 The Pigweed Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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import("//build_overrides/pigweed.gni")
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import("clang_config.gni")
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cortex_m_common_flags = [
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"-mabi=aapcs",
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"-mthumb",
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]
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cortex_m_software_fpu_flags = [ "-mfloat-abi=soft" ]
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cortex_m_hardware_fpu_flags = [
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"-mfloat-abi=hard",
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"-mfpu=fpv4-sp-d16",
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# Used by some pigweed tests/targets to correctly handle hardware FPU
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# behavior.
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"-DPW_ARMV7M_ENABLE_FPU=1",
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]
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config("enable_float_printf") {
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ldflags = [ "-Wl,-u_printf_float" ]
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}
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pw_clang_arm_config("cortex_m3") {
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cflags = [ "-mcpu=cortex-m3" ]
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cflags += cortex_m_common_flags
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cflags += cortex_m_software_fpu_flags
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asmflags = cflags
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ldflags = cflags
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}
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pw_clang_arm_config("cortex_m4f") {
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cflags = [ "-mcpu=cortex-m4" ]
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cflags += cortex_m_common_flags
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cflags += cortex_m_hardware_fpu_flags
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asmflags = cflags
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ldflags = cflags
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}
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