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mk: Document current build options in config.mk.example

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Signed-off-by: Felix Walter <felix.walter@d3tn.com>
This commit is contained in:
Felix Walter 2023-09-29 09:15:57 +02:00
parent e6ed75f77b
commit ab00791f2a
2 changed files with 29 additions and 8 deletions
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36
config.mk.example
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@ -1,20 +1,42 @@
# Example for Makefile configuration options
# Copy this to config.mk and either download the required software packages
# and extract them to an arbitrary directory or install them
# with your package manager. The variables show the defaults applied by the
# build system automatically.
# Example for build-time configuration options.
# Copy this to `config.mk` and adjust as needed. The values shown below are
# usage examples, whereas the first one is always the default value.
# Toolchain to be used. `gcc` or `clang` can be selected
#####################
# Toolchain options #
#####################
# Toolchain to be used. `gcc` or `clang` can be selected. Note that this can
# also be specified on the command line, e.g.: `make TOOLCHAIN=clang`
#TOOLCHAIN := gcc
# Toolchain prefix for local posix target
# Toolchain prefix, useful for cross-compilation.
# can be left empy most of the time (default: search in $PATH)
#TOOLCHAIN_POSIX :=
#TOOLCHAIN_POSIX := arm-linux-gnueabihf-
# Prefix for the Clang compiler
#CLANG_PREFIX :=
#CLANG_PREFIX := /opt/my-clang-installation/
# --sysroot provided to the Clang compiler, useful for providing the path to
# the embedded toolchain so the proper headers are found.
# If left empty, the option is not provided to the compiler.
#CLANG_SYSROOT_POSIX :=
# Value passed to the compiler via `-march`. If not specified, will use
# `-march=native` on x86/x86_64 platforms and not pass the parameter on others.
#ARCH :=
#ARCH := armv7-m
# Use flags suitable for the macOS linker. If not specified, autodetect.
#EXPECT_MACOS_LINKER := 0
# Additional compiler flags.
#CPPFLAGS +=
# Additional linker flags.
#LDFLAGS +=
# Additional flags passed to compiler and linker.
#ARCH_FLAGS +=

1
mk/posix.mk
View file

@ -5,7 +5,6 @@ GCC_TOOLCHAIN_PREFIX ?= $(TOOLCHAIN_POSIX)
CLANG_PREFIX ?=
CLANG_SYSROOT_POSIX ?=
CLANG_SYSROOT ?= $(CLANG_SYSROOT_POSIX)
CPU ?=
# COMPILER AND LINKER FLAGS