#!/bin/sh -e

export DESTDIR="$1"

cd clang
cmake -B build \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_BUILD_TYPE=Release \
    -DLLVM_ENABLE_RTTI=ON \
    -DLLVM_ENABLE_EH=ON \
    -DLLVM_ENABLE_LIBXML2=OFF \
    -DLLVM_INCLUDE_TESTS=OFF \
    -DCLANG_BUILD_EXAMPLES=OFF \
    -DCLANG_INCLUDE_DOCS=OFF \
    -DCLANG_INCLUDE_TESTS=OFF \
    -DLIBCLANG_BUILD_STATIC=ON \
    -Wno-dev

cmake --build   build
cmake --install build

# Fix up libexec location. This can't be done during
# the configure stage of the build as it is hardcoded.
{
    mv -f \
        "$1/usr/libexec/"*analyze* \
        "$1/usr/libexec/"*intercept* \
        "$1/usr/lib/clang"

    rmdir "$1/usr/libexec"

    sed 's|libexec|lib/clang|' "$1/usr/bin/scan-build" > _
    mv -f _ "$1/usr/bin/scan-build"
    chmod +x "$1/usr/bin/scan-build"
}