pmaports/main/devicepkg-dev/downstreamkernel_prepare.sh

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#!/bin/sh
# Replace compiler-gcc.h with one that works with newer GCC versions.
# Set REPLACE_GCCH=0 to avoid replacing an existing compiler-gcc.h file.
install_gcc_h() {
# shellcheck disable=SC2154
_gcch="$builddir/include/linux/compiler-gcc.h"
if [ -f "$_gcch" ]; then
if [ "$REPLACE_GCCH" = "0" ]; then
echo "NOTE: *not* replacing $_gcch, because of REPLACE_GCCH=0"
return
else
echo "NOTE: replacing $_gcch! If your build breaks with 'Please"
echo "don't include <linux/compiler-gcc.h> directly' or a similar"
echo "compiler-gcc.h related error, then set"
echo " REPLACE_GCCH=0"
echo "in your kernel APKBUILD at the start of the"
echo "downstreamkernel_prepare.sh line."
fi
fi
cp -v "/usr/share/devicepkg-dev/compiler-gcc.h" "$_gcch"
}
if [ "$#" -ne 0 ]; then
echo "ERROR: downstreamkernel_prepare should be sourced in APKBUILDs."
echo "Related: https://postmarketos.org/downstreamkernel-prepare"
exit 1
fi
# Set _outdir to "." if not set
if [ -z "$_outdir" ]; then
_outdir="."
fi
# Set _hostcc when HOSTCC is set
[ -z "$HOSTCC" ] || _hostcc="HOSTCC=$HOSTCC"
# Support newer GCC versions
install_gcc_h
# Remove -Werror from all makefiles
makefiles="$(find "$builddir" -type f -name Makefile)
$(find "$builddir" -type f -name Makefile.common)
$(find "$builddir" -type f -name Kbuild)"
for i in $makefiles; do
sed -i 's/-Werror-/-W/g' "$i"
sed -i 's/-Werror=/-W/g' "$i"
sed -i 's/-Werror//g' "$i"
done
# Prepare kernel config ('yes ""' for kernels lacking olddefconfig)
mkdir -p "$builddir/$_outdir"
# shellcheck disable=SC2154
cp "$srcdir/$_config" "$builddir"/"$_outdir"/.config
# shellcheck disable=SC2086,SC2154
yes "" | make -C "$builddir" ARCH="$_carch" O="$_outdir" \
$_hostcc oldconfig