Autotools build fails

[nurupo]

When building using the autotools build system, Alut fails to link against OpenAL installed in a custom directory.

I have followed the instructions from README for how to let Alut know of OpenAL installed in non-system-wide manner, specifically

To build and run ALUT, you need an OpenAL somewhere (and a sound card, of course
:-). If OpenAL is not installed in a standard place (let's say ${OPENAL_PREFIX})
you'll have to tell the build system about it:

CPPFLAGS="-I${OPENAL_PREFIX}/include"
LDFLAGS="-L${OPENAL_PREFIX}/lib"
export CPPFLAGS LDFLAGS

I build OpenAL and Alut on a clean Debian Jessie system like this

# Create a clean Debian Jessie system in a container
sudo docker run -it --rm debian:jessie-slim /bin/bash


# Setup

apt-get update
apt-get install build-essential autoconf cmake libtool pkg-config libpulse-dev libasound2-dev git -y

cd ~

mkdir prefix_openal
cd prefix_openal
OPENAL_DIR=$(pwd)
cd ..

mkdir prefix_alut
cd prefix_alut
ALUT_DIR=$(pwd)
cd ..


# OpenAL

git clone https://github.com/kcat/openal-soft
cd openal*
git checkout openal-soft-1.18.0
cd build

cmake -DCMAKE_INSTALL_PREFIX=$OPENAL_DIR \
      -DCMAKE_BUILD_TYPE=Release \
      -DALSOFT_UTILS=OFF \
      -DALSOFT_EXAMPLES=OFF \
      -DCMAKE_C_FLAGS="-fPIC" \
      -DLIBTYPE=STATIC \
      ..

make
make install

cd ../..


# Alut

git clone https://github.com/vancegroup/freealut
cd freealut

CPPFLAGS="-I${OPENAL_DIR}/include"
LDFLAGS="-L${OPENAL_DIR}/lib"
export CPPFLAGS LDFLAGS

./autogen.sh
./configure --prefix="${ALUT_DIR}" --disable-shared --enable-static

make
make install

The build fails with

Making all in examples
make[2]: Entering directory '/root/freealut/examples'
gcc -DHAVE_CONFIG_H -I. -I..  -I../include -I/root/prefix_openal/include -fvisibility=hidden -g -O2 -MT hello_world.o -MD -MP -MF .deps/hello_world.Tpo -c -o hello_world.o hello_world.c
mv -f .deps/hello_world.Tpo .deps/hello_world.Po
/bin/bash ../libtool  --tag=CC   --mode=link gcc -fvisibility=hidden -g -O2  -L/root/prefix_openal/lib -o hello_world hello_world.o ../src/libalut.la
libtool: link: gcc -fvisibility=hidden -g -O2 -o hello_world hello_world.o  -L/root/prefix_openal/lib ../src/.libs/libalut.a -lm
hello_world.o: In function `main':
/root/freealut/examples/hello_world.c:17: undefined reference to `alGenSources'
/root/freealut/examples/hello_world.c:18: undefined reference to `alSourcei'
/root/freealut/examples/hello_world.c:19: undefined reference to `alSourcePlay'
../src/.libs/libalut.a(libalut_la-alutInit.o): In function `_alutSanityCheck':
/root/freealut/src/alutInit.c:27: undefined reference to `alcGetCurrentContext'
/root/freealut/src/alutInit.c:34: undefined reference to `alGetError'
/root/freealut/src/alutInit.c:40: undefined reference to `alcGetContextsDevice'
/root/freealut/src/alutInit.c:40: undefined reference to `alcGetError'
../src/.libs/libalut.a(libalut_la-alutInit.o): In function `alutInit':
/root/freealut/src/alutInit.c:67: undefined reference to `alcOpenDevice'
/root/freealut/src/alutInit.c:74: undefined reference to `alcCreateContext'
/root/freealut/src/alutInit.c:82: undefined reference to `alcMakeContextCurrent'
/root/freealut/src/alutInit.c:84: undefined reference to `alcDestroyContext'
/root/freealut/src/alutInit.c:85: undefined reference to `alcCloseDevice'
/root/freealut/src/alutInit.c:77: undefined reference to `alcCloseDevice'
../src/.libs/libalut.a(libalut_la-alutInit.o): In function `alutExit':
/root/freealut/src/alutInit.c:136: undefined reference to `alcMakeContextCurrent'
/root/freealut/src/alutInit.c:142: undefined reference to `alcGetContextsDevice'
/root/freealut/src/alutInit.c:143: undefined reference to `alcDestroyContext'
/root/freealut/src/alutInit.c:144: undefined reference to `alcGetError'
/root/freealut/src/alutInit.c:150: undefined reference to `alcCloseDevice'
../src/.libs/libalut.a(libalut_la-alutBufferData.o): In function `generateBuffer':
/root/freealut/src/alutBufferData.c:99: undefined reference to `alGenBuffers'
/root/freealut/src/alutBufferData.c:100: undefined reference to `alGetError'
../src/.libs/libalut.a(libalut_la-alutBufferData.o): In function `passBufferData':
/root/freealut/src/alutBufferData.c:122: undefined reference to `alBufferData'
/root/freealut/src/alutBufferData.c:124: undefined reference to `alGetError'
collect2: error: ld returned 1 exit status
Makefile:348: recipe for target 'hello_world' failed
make[2]: *** [hello_world] Error 1
make[2]: Leaving directory '/root/freealut/examples'

Here is a tree $OPENAL_DIR, just in case you think OpenAL is improperly installed

/root/prefix_openal
|-- bin
|   `-- altonegen
|-- include
|   `-- AL
|       |-- al.h
|       |-- alc.h
|       |-- alext.h
|       |-- efx-creative.h
|       |-- efx-presets.h
|       `-- efx.h
|-- lib
|   |-- cmake
|   |   `-- OpenAL
|   |       |-- OpenALConfig-release.cmake
|   |       `-- OpenALConfig.cmake
|   |-- libopenal.a
|   `-- pkgconfig
|       `-- openal.pc
`-- share
    `-- openal
        |-- alsoftrc.sample
        |-- hrtf
        |   |-- default-44100.mhr
        |   `-- default-48000.mhr
        `-- presets
            |-- 3D7.1.ambdec
            |-- hexagon.ambdec
            |-- itu5.1.ambdec
            |-- presets.txt
            |-- rectangle.ambdec
            `-- square.ambdec

11 directories, 20 files