AC_CHECK_LIB(hdf5, main, [hdf5=true], [hdf5=false], -lz)
AC_CHECK_LIB(fftw, fftw_one, [fftw=true; AC_DEFINE(HAVE_FFTW)], [fftw=false])
AC_CHECK_LIB(GL, main, [libgl=true], [libgl=false])
+AC_CHECK_LIB(pthread, main, [pthread=true], [pthread=false])
if test "$zlib" = "true" ; then
AC_CHECK_LIB(png, main, [png=true ; AC_DEFINE(HAVE_PNG)], [png=false])
AC_MSG_RESULT(no)
+if test "${pthread}" = "true" ; then
+ AC_ADD_GCC_CFLAGS([-pthread])
+fi
+
AC_ADD_GCC_CFLAGS([-Wall])
AC_MSG_CHECKING(whether to enable verbose warnings)
AC_ARG_ENABLE(verbose-warnings,