mkvtoolnix/ac/matroska.m4

dnl
dnl Test for libEBML and libMatroska, and define MATROSKA_CFLAGS and MATROSKA_LIBS
dnl

EBML_MATROSKA_INTERNAL=no
PKG_CHECK_MODULES([EBML],[libebml >= 1.4.2],[],[EBML_MATROSKA_INTERNAL=yes])
PKG_CHECK_MODULES([MATROSKA],[libmatroska >= 1.6.3],[],[EBML_MATROSKA_INTERNAL=yes])

if test x"$EBML_MATROSKA_INTERNAL" = xyes; then
  if ! test -f lib/libebml/ebml/EbmlTypes.h ; then
    echo '*** The internal version of the libEBML library is supposed to be used,'
    echo '*** but it was not found in "lib/libebml. If this is a clone from the'
    echo '*** git repository then submodules have to be initialized with the'
    echo '*** following two commands:'
    echo '***'
    echo '*** git submodule init'
    echo '*** git submodule update'
    exit 1
  fi

  if ! test -f lib/libmatroska/matroska/KaxVersion.h ; then
    echo '*** The internal version of the libMatroska library is supposed to be used,'
    echo '*** but it was not found in "lib/libmatroska". If this is a clone from the'
    echo '*** git repository then submodules have to be initialized with the'
    echo '*** following two commands:'
    echo '***'
    echo '*** git submodule init'
    echo '*** git submodule update'
    exit 1
  fi
fi

AC_SUBST(EBML_MATROSKA_INTERNAL)
AC_SUBST(EBML_CFLAGS)
AC_SUBST(EBML_LIBS)
AC_SUBST(MATROSKA_CFLAGS)
AC_SUBST(MATROSKA_LIBS)