| #!/bin/bash |
| # |
| # Build protoc |
| set -evux -o pipefail |
| |
| # ARCH is 64 bit unless otherwise specified. |
| ARCH="${ARCH:-64}" |
| DOWNLOAD_DIR=/tmp/source |
| INSTALL_DIR="/tmp/protobuf-$PROTOBUF_VERSION/$(uname -s)-$(uname -p)-x86_$ARCH" |
| mkdir -p $DOWNLOAD_DIR |
| |
| # Start with a sane default |
| NUM_CPU=4 |
| if [[ $(uname) == 'Linux' ]]; then |
| NUM_CPU=$(nproc) |
| fi |
| if [[ $(uname) == 'Darwin' ]]; then |
| NUM_CPU=$(sysctl -n hw.ncpu) |
| fi |
| |
| # Make protoc |
| # Can't check for presence of directory as cache auto-creates it. |
| if [ -f ${INSTALL_DIR}/bin/protoc ]; then |
| echo "Not building protobuf. Already built" |
| # TODO(ejona): swap to `brew install --devel protobuf` once it is up-to-date |
| else |
| if [[ ! -d "$DOWNLOAD_DIR"/protobuf-"${PROTOBUF_VERSION}" ]]; then |
| wget -O - https://github.com/google/protobuf/archive/v${PROTOBUF_VERSION}.tar.gz | tar xz -C $DOWNLOAD_DIR |
| fi |
| pushd $DOWNLOAD_DIR/protobuf-${PROTOBUF_VERSION} |
| ./autogen.sh |
| # install here so we don't need sudo |
| ./configure CFLAGS=-m"$ARCH" CXXFLAGS=-m"$ARCH" --disable-shared \ |
| --prefix="$INSTALL_DIR" |
| # the same source dir is used for 32 and 64 bit builds, so we need to clean stale data first |
| make clean |
| make -j$NUM_CPU |
| make install |
| popd |
| fi |
| |
| # If /tmp/protobuf exists then we just assume it's a symlink created by us. |
| # It may be that it points to the wrong arch, so we idempotently set it now. |
| if [[ -L /tmp/protobuf ]]; then |
| rm /tmp/protobuf |
| fi |
| ln -s "$INSTALL_DIR" /tmp/protobuf |