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build-example.sh
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build-example.sh
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#!/bin/bash -eu
# Copyright 2018 The Wuffs Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ----------------
# See build-all.sh for commentary.
if [ ! -e wuffs-root-directory.txt ]; then
echo "$0 should be run from the Wuffs root directory."
exit 1
fi
CC=${CC:-gcc}
CXX=${CXX:-g++}
LDFLAGS=${LDFLAGS:-}
# The "-fdata-sections -ffunction-sections -Wl,--gc-sections" produces smaller
# binaries. See commit 41fce8a8 "Strip examples of unused data and functions".
CFLAGS=${CFLAGS:--O3 -fdata-sections -ffunction-sections -Wl,--gc-sections}
CXXFLAGS=${CXXFLAGS:--O3 -fdata-sections -ffunction-sections -Wl,--gc-sections}
mkdir -p gen/bin
sources=$@
if [ $# -eq 0 ]; then
sources=example/*
fi
for f in $sources; do
f=${f%/}
f=${f##*/}
if [ -z $f ]; then
continue
fi
if [ $f = imageviewer ]; then
# example/imageviewer is unusual in that needs additional libraries.
echo "Building (C++) gen/bin/example-$f"
$CXX $CXXFLAGS example/$f/*.cc \
$LDFLAGS -lxcb -lxcb-image -lxcb-render -lxcb-render-util \
-o gen/bin/example-$f
elif [ $f = "sdl-imageviewer" ]; then
# example/sdl-imageviewer is unusual in that needs additional libraries.
echo "Building (C++) gen/bin/example-$f"
$CXX $CXXFLAGS example/$f/*.cc \
$LDFLAGS -lSDL2 -lSDL2_image \
-o gen/bin/example-$f
elif [ $f = "toy-genlib" ]; then
# example/toy-genlib is unusual in that it uses separately compiled
# libraries (built by "wuffs genlib", e.g. by running build-all.sh) instead
# of directly #include'ing Wuffs' .c files.
if [ -e gen/lib/c/$CC-static/libwuffs.a ]; then
echo "Building (C) gen/bin/example-$f"
$CC $CFLAGS -static -I.. example/$f/*.c gen/lib/c/$CC-static/libwuffs.a \
$LDFLAGS -o gen/bin/example-$f
else
echo "Skipping gen/bin/example-$f; run \"wuffs genlib\" first"
fi
elif [ -e example/$f/*.c ]; then
echo "Building (C) gen/bin/example-$f"
$CC $CFLAGS example/$f/*.c $LDFLAGS -o gen/bin/example-$f
elif [ $f = "jsonfindptrs" ]; then
echo "Building (C++) gen/bin/example-$f"
$CXX $CXXFLAGS -std=c++17 example/$f/*.cc $LDFLAGS -o gen/bin/example-$f
elif [ -e example/$f/*.cc ]; then
echo "Building (C++) gen/bin/example-$f"
$CXX $CXXFLAGS example/$f/*.cc $LDFLAGS -o gen/bin/example-$f
fi
done