sodium.cr/build/env.sh

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#!/bin/sh
# Overridable.
[ -z "$LIBSODIUM_BUILD_DIR" ] && LIBSODIUM_BUILD_DIR=`pwd`/build
# Upgraded from time to time.
export MIN_LIBSODIUM_VERSION=1.0.18
export LIBSODIUM_SHA256=6f504490b342a4f8a4c4a02fc9b866cbef8622d5df4e5452b46be121e46636c1
[ ! -z "$SODIUM_BUILD_DEBUG" ] && export SODIUM_BUILD_VERBOSE=1
function version { echo "$@" | awk -F. '{ printf("%d%03d%03d%03d\n", $1,$2,$3,$4); }'; }
if `pkg-config libsodium --exists`; then
PKG_VER=`pkg-config libsodium --modversion`
if [ $(version "$PKG_VER") -ge $(version "$MIN_LIBSODIUM_VERSION") ]; then
[ ! -z "$SODIUM_BUILD_VERBOSE" ] && echo "Using packaged libsodium." 1>&2
else
[ ! -z "$SODIUM_BUILD_VERBOSE" ] && echo "System packaged libsodium is too old." 1>&2
export LIBSODIUM_INSTALL=1
fi
else
[ ! -z "$SODIUM_BUILD_VERBOSE" ] && echo "Missing libsodium system package." 1>&2
export LIBSODIUM_INSTALL=1
fi
if [ "$LIBSODIUM_INSTALL" = "1" ]; then
export LIBSODIUM_INSTALL_PATH="$LIBSODIUM_BUILD_DIR"/libsodium
export PKG_CONFIG_PATH="$LIBSODIUM_INSTALL_PATH"/lib/pkgconfig
fi