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b3view/build.sh

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#!/bin/bash
# This file should be identical in all projects. See documentation
# under "usage" below.
usage(){
cat <<END
build.sh
(c) 2021 Poikilos
License of this file: [MIT License](https://opensource.org/licenses/MIT)
This is a modular script to build C++ programs without any make or build tools.
This script is designed to run using a build-settings.rc file containing settings,
or by having all of the settings set in the environment.
To run this script without bash, your shell must be able to process bash-style "if" syntax as used here.
Settings:
SRC_PATH is the full path to the repository's source code.
IN_FILES should be a space-separated list of cpp files not including the extension.
The full path to each file must not include spaces, but the path must be
relative to the SRC_PATH (since the filenames are collected in a bash
string then used as the input param for g++).
If the file is in a subdirectory, you must also specify the name of the
directory in OTHER_DIRS so a corresponding directory under the objects
directory gets created (or you simply do that and not specify the subdir
here, and that option will cause the file to be found--see OTHER_DIRS
below).
BIN_NAME is the filename for the binary to compile.
OTHER_DIRS (optional) is a list of other subdirectories where files may exist.
The filenames (without extension) must not be the same as in any other
folder (since this script places all o files in the same directory).
Each directory must be free of spaces since it is iterated based on spaces.
Any matching file in such a directory will override the file in the SRC_PATH
directory if the file name is the same, so there will be no conflict in that
case, but the file in the SRC_PATH will be ignored.
DIST_FILES (optional) is a space-separated list of files or directories that should
be copied to the build directory along with the binary. This is for
required files that should be distributed with the program.
BUILD_DIR (optional, default is "build") is the directory to place the binary
executable and DIST_FILES if any.
Example build-settings.rc:
SRC_PATH="$REPO_PATH/src"
IN_FILES="Application ApplicationDelegate IrrlichtEventReceiver main SaveFileDialog"
BIN_NAME=my_program
#OTHER_DIRS="extlib"
#DIST_FILES="media"
With the correct use of a build-settings.rc file,
This script is identical in every project.
For examples, see the following repos by Poikilos on GitHub:
- b3view
- irrPaint3D
END
}
if [ -z "$REPO_PATH" ]; then
REPO_PATH="`pwd`"
fi
HAS_ALL=false
if [ ! -z "$SRC_PATH" ]; then
if [ ! -z "$IN_FILES" ]; then
if [ ! -z "$BIN_NAME" ]; then
HAS_ALL=true
fi
fi
fi
if [ "@$HAS_ALL" != "@true" ]; then
. build-settings.rc
if [ ! -f build-settings.rc ]; then
usage
echo "Error: build-settings.rc is missing."
exit 1
fi
else
echo "INFO: The variables are in the environment, so checking for build-settings.rc was skipped."
fi
if [ -z "$SRC_PATH" ]; then
cat <<END
Error: You must set SRC_PATH in build-settings.rc or the environment.
END
exit 1
fi
if [ -z "$IN_FILES" ]; then
cat <<END
Error: You must set IN_FILES in build-settings.rc or the environment.
END
exit 1
fi
if [ -z "$BIN_NAME" ]; then
cat <<END
Error: You must set BIN_NAME in build-settings.rc or the environment.
END
exit 1
fi
if [ -z "$PREFIX" ]; then
PREFIX="/usr"
fi
mkdir -p $PREFIX
if [ $? -ne 0 ]; then
echo "Error: 'mkdir -p $PREFIX' failed."
exit 1
fi
if [ -z "$DEBUG" ]; then
DEBUG=false
fi
RUN_DEBUG=false
for arg in "$@"
do
if [ "@$arg" == "@--debug" ]; then
DEBUG=true
elif [ "@$arg" == "@--run-debug" ]; then
DEBUG=true
RUN_DEBUG=true
fi
done
OPTION1="-O2"
OPTION2=
OPTION3=
if [ -z "$BUILD_DIR" ]; then
BUILD_DIR="build"
fi
OUT_BIN="$BUILD_DIR/$BIN_NAME"
OUT_BIN_PATH="`realpath $OUT_BIN`"
OUT_BIN_CWD="`realpath $BUILD_DIR`"
if [ "@$DEBUG" = "@true" ]; then
OPTION1="-g"
#OPTION2="-DQT_QML_DEBUG"
OPTION3="-DDEBUG=true"
OUT_BIN=build/debug/$BIN_NAME
mkdir -p "build/debug"
echo "* build:Debug (`pwd`/$OUT_BIN)"
else
echo "* build:Release (`pwd`/$OUT_BIN)"
fi
SYSTEM_INCDIR=$PREFIX/include
#IRR_INCDIR=
#IRR_LIBDIR=
# FT2_INCDIR=$PREFIX/include/freetype2
FT2_INCDIR=$PREFIX/include/freetype2
#FT2_LIBDIR=
OBJDIR="./build/tmp"
# ^ build is in .gitignore
if [ ! -d "$OBJDIR" ]; then
mkdir -p "$OBJDIR"
fi
for extra_dir in $OTHER_DIRS
do
mkdir -p $OBJDIR/$extra_dir
done
_O_FILES=""
_I_FILES=""
for fn in $IN_FILES
do
echo "* [$0] compiling $fn..."
# based on qtcreator's build after clean (see contributing.md; some options are unclear):
THIS_NAME=$fn.cpp
THIS_PATH=$SRC_PATH/$THIS_NAME
THIS_OBJ_PATH="$OBJDIR/$fn.o"
for extra_dir in $OTHER_DIRS
do
if [ -f "$SRC_PATH/$extra_dir/$fn.cpp" ]; then
THIS_NAME=$extra_dir/$fn.cpp
THIS_PATH=$SRC_PATH/$THIS_NAME
break
fi
done
_I_FILES="$_I_FILES $THIS_PATH"
g++ -c -pipe $OPTION1 $OPTION2 $OPTION3 -fPIC -I$REPO_PATH -I$FT2_INCDIR -o $THIS_OBJ_PATH $THIS_PATH
if [ $? -ne 0 ]; then echo "Error: building $fn failed."; exit 1; fi
#-w: suppress warning
# -I.: include the current directory (suppresses errors when using include < instead of include "
#-pipe: "Use pipes rather than intermediate files."
#Options starting with -g, -f, -m, -O, -W, or --param are automatically
# passed on to the various sub-processes invoked by g++. In order to pass
# other options on to these processes the -W<letter> options must be used.
_O_FILES="$_O_FILES $THIS_OBJ_PATH"
done
# only for pc file if exists for irrlicht:
#if [ -z "$PKG_CONFIG_PATH" ]; then
# PKG_CONFIG_PATH=$IRR_PATH
#else
# PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$IRR_PATH
#fi
#gcc -o build/$BIN_NAME $_I_FILES $(pkg-config --libs --cflags irrlicht --cflags freetype2)
#^ can't find a pc file
# gcc -o build/$BIN_NAME $_I_FILES -I$FT2_INCDIR
if [ -f "$$OUT_BIN" ]; then
mv "$OUT_BIN" "$OUT_BIN.BAK"
if [ $? -ne 0 ]; then
echo "Error: 'mv \"$OUT_BIN\" \"$OUT_BIN.BAK\"' failed.."
exit 1
fi
fi
g++ -o $OUT_BIN $_O_FILES -lIrrlicht -lX11 -lGL -lXxf86vm -lXcursor -lstdc++fs -lfreetype
if [ $? -ne 0 ]; then
cat <<END
Error: Linking failed. Ensure you have installed:
- irrlicht-devel and its dependencies: mesa-libGL-devel (requires libglvnd-devel which requires libX11-devel) libXxf86vm-devel
- libXcursor-devel
- freetype-devel
END
exit 1
else
echo "* linking succeeded."
fi
if [ ! -f "$OUT_BIN" ]; then
echo "Error: $OUT_BIN couldn't be built."
exit 1
else
echo "Building $OUT_BIN is complete."
fi
if [ ! -z "$DIST_FILES" ]; then
echo "* copying dist files..."
for fn in $DIST_FILES
do
printf " * $fn..."
if [ -d "$fn" ]; then
cp -R "$fn" $BUILD_DIR/
if [ $? -ne 0 ]; then
echo "Error: 'cp -R \"$fn\" $BUILD_DIR/' failed in \"`pwd`\"."
exit 1
else
echo "OK"
fi
else
cp -f "$fn" $BUILD_DIR/
if [ $? -ne 0 ]; then
echo "Error: 'cp -f \"$fn\" $BUILD_DIR/' failed in \"`pwd`\"."
exit 1
else
echo "OK"
fi
fi
done
fi
INSTALLED_BIN="$HOME/.local/bin/$BIN_NAME"
if [ "@$RUN_DEBUG" = "@true" ]; then
if [ "@$DEBUG" = "@true" ]; then
./debug-and-show-tb.sh
else
echo "Error: you specified the run option but debug mode is not enabled so ./debug-and-show-tb.sh will not work as expected. Try:"
echo " $0 --debug --run-debug"
exit 1
fi
else
echo " (add the --run-debug option to run it automatically)"
fi
if [ "@$DEBUG" != "@true" ]; then
if [ -f "$INSTALLED_BIN" ]; then
echo "* updating $INSTALLED_BIN..."
./$OUT_BIN --test-and-exit
if [ $? -eq 0 ]; then
# if no errors occur, install it
rm "$INSTALLED_BIN"
cp -f "$OUT_BIN" "$INSTALLED_BIN"
if [ $? -eq 0 ]; then
echo "* installed $INSTALLED_BIN successfully."
else
echo "* FAILED to install $INSTALLED_BIN."
fi
else
echo "* skipping install since './$OUT_BIN' failed."
echo
if [ "@$DEBUG" != "@true" ]; then
echo "* Build with debugging symbols like:"
echo " $0 --debug"
echo " # then:"
fi
echo " # (See ./debug-and-show-tb.sh)"
# cat ./debug-and-show-tb.sh
# echo " gdb \"$OUT_BIN\""
fi
else
echo "* skipping \"$INSTALLED_BIN\" update since it doesn't exist"
fi
fi
echo "Done"
echo "You can now make a shortcut to:"
echo " Exec=$OUT_BIN_PATH"
echo " Path=$OUT_BIN_CWD"
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