default_pre_build        &&
cd  "$SOURCE_DIRECTORY"  &&

# fix X11 lib path
sed -i  "s|/usr/X11R6|\"$INSTALL_ROOT/usr\"|"  Makefile  &&

# fix broken linking
sed -i  "s|-lm|-lm -ldl -lpthread -lXau -lXdmcp|"  Makefile  &&

# insert own compiler flags
sed -i  "s|-m486 -O3 -ffast-math -fforce-mem -fomit-frame-pointer|$CFLAGS|"  \
        Makefile                                                             &&

# fix M_PI usage
sed -i  "s|PI|M_PI|g"  *.c  &&

# define custom sample rate
if (( XSYNTH_RATE > 0 && XSYNTH_RATE != 44100 ))
then
  sed -i  "s|44100|$XSYNTH_RATE|"  synth.h
fi
