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#!/usr/bin/env bash
export COMPILATIONDB_INCLUDE_TOOLCHAIN=true
# Compile the project
pio run -t compiledb
# Clean up existing define files
rm -f _compiler_defines.h compiler_defines.h clang_defines.h
# Generate defines for clang
gcc -dM -xc++ /dev/null -c -v -E 2>/dev/null | sed "s/\([^[:space:]]\+[[:space:]]\+[^[:space:]]\+\)\(.*\)/\1/;s/#define/#undef/" >clang_defines.h
# Iterate through compile_commands.json and extract compiler defines
for comp in $(cat compile_commands.json | grep -E "\"command\": \"[^[:space:]]* -o" | sed 's:"command"\: "::g; s:-o.*::g' | sort | uniq); do
set -x
$comp -dM -E -xc++ /dev/null >>_compiler_defines.h
set +x
done
# Combine defines from clang and extracted defines
cat clang_defines.h > compiler_defines.h
cat _compiler_defines.h | sort | uniq >> compiler_defines.h
# Clean up temporary define files
rm -f _compiler_defines.h clang_defines.h
# Update compile_commands.json with additional include flags
sed -i "s:.cpp\",:.cpp -include $${PWD}/compiler_defines.h\",:" compile_commands.json
sed -i "s:.c\",:.c -include $${PWD}/compiler_defines.h\",:" compile_commands.json
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