esp-idf/make/build_examples.sh

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#!/bin/bash
#
# Build all examples from the examples directory, out of tree to
# ensure they can run when copied to a new directory.
#
# Runs as part of CI process.
#
# Assumes CWD is an out-of-tree build directory, and will copy examples to individual subdirectories, one by one.
#
[ -z ${IDF_PATH} ] && echo "IDF_PATH is not set" && exit 1
EXAMPLE_NUM=1
RESULT=0
RESULT_WARNINGS=22 # magic number result code for "warnings found"
set -e
for example in ${IDF_PATH}/examples/*; do
[ -f ${example}/Makefile ] || continue
echo "Building ${example} as ${EXAMPLE_NUM}..."
mkdir -p example_builds/${EXAMPLE_NUM}
cp -r ${example} example_builds/${EXAMPLE_NUM}
pushd example_builds/${EXAMPLE_NUM}/`basename ${example}`
# be stricter in the CI build than the default IDF settings
export EXTRA_CFLAGS="-Werror -Werror=deprecated-declarations"
export EXTRA_CXXFLAGS=${EXTRA_CFLAGS}
# build non-verbose first
BUILDLOG=$(mktemp -t examplebuild.XXXX.log)
(
set -e
make clean defconfig
make all 2>&1 | tee $BUILDLOG
) || (RESULT=$?; make V=1) # only build verbose if there's an error
popd
EXAMPLE_NUM=$(( $EXAMPLE_NUM + 1 ))
if [ $RESULT -eq 0 ] && grep -q ": warning:" $BUILDLOG; then
echo "Build will fail, due to warnings in this example"
RESULT=$RESULT_WARNINGS
fi
rm -f $BUILDLOG
done
if [ $RESULT -eq $RESULT_WARNINGS ]; then
echo "Build would have passed, except for warnings."
fi
exit $RESULT