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57 lines
1.6 KiB
57 lines
1.6 KiB
#!/bin/bash
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#
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# Build protoc
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set -evux -o pipefail
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PROTOBUF_VERSION=3.5.1
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# ARCH is 64 bit unless otherwise specified.
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ARCH="${ARCH:-64}"
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DOWNLOAD_DIR=/tmp/source
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INSTALL_DIR="/tmp/protobuf-cache/$PROTOBUF_VERSION/$(uname -s)-$(uname -p)-x86_$ARCH"
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mkdir -p $DOWNLOAD_DIR
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# Start with a sane default
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NUM_CPU=4
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if [[ $(uname) == 'Linux' ]]; then
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NUM_CPU=$(nproc)
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fi
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if [[ $(uname) == 'Darwin' ]]; then
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NUM_CPU=$(sysctl -n hw.ncpu)
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fi
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# Make protoc
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# Can't check for presence of directory as cache auto-creates it.
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if [ -f ${INSTALL_DIR}/bin/protoc ]; then
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echo "Not building protobuf. Already built"
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# TODO(ejona): swap to `brew install --devel protobuf` once it is up-to-date
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else
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if [[ ! -d "$DOWNLOAD_DIR"/protobuf-"${PROTOBUF_VERSION}" ]]; then
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wget -O - https://github.com/google/protobuf/releases/download/v${PROTOBUF_VERSION}/protobuf-all-${PROTOBUF_VERSION}.tar.gz | tar xz -C $DOWNLOAD_DIR
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fi
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pushd $DOWNLOAD_DIR/protobuf-${PROTOBUF_VERSION}
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# install here so we don't need sudo
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./configure CFLAGS=-m"$ARCH" CXXFLAGS=-m"$ARCH" --disable-shared \
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--prefix="$INSTALL_DIR"
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# the same source dir is used for 32 and 64 bit builds, so we need to clean stale data first
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make clean
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make V=0 -j$NUM_CPU
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make install
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popd
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fi
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# If /tmp/protobuf exists then we just assume it's a symlink created by us.
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# It may be that it points to the wrong arch, so we idempotently set it now.
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if [[ -L /tmp/protobuf ]]; then
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rm /tmp/protobuf
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fi
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ln -s "$INSTALL_DIR" /tmp/protobuf
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cat <<EOF
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To compile with the build dependencies:
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export LDFLAGS=-L/tmp/protobuf/lib
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export CXXFLAGS=-I/tmp/protobuf/include
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export LD_LIBRARY_PATH=/tmp/protobuf/lib
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EOF
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