configure.in

# see /usr/share/info/standards.info,autoconf.info (autoconf 2.57)
dnl Process this file with autoconf to produce a configure script.
dnl obsolete: AC_INIT(src/pgm2asc.c)
AC_INIT(gocr,0.50,,)
AC_PREREQ(2.50)
AC_CONFIG_HEADERS([include/config.h])
dnl AC_EXEEXT is obsolete now

dnl Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_MAKE_SET
dnl only needed for libPgm2asc.a, not for the rpm/ebuild
dnl AC_PROG_RANLIB
dnl AC_CHECK_PROG(AR,ar,ar)
dnl needed for developpers to make examples, not for the rpm/ebuild
dnl AC_CHECK_PROG(FIG2DEV,fig2dev,fig2dev)

dnl Check for optional debug mode
dnl debug makes program slow, but is very useful for developper
dnl ToDo: how to check that c-flags are available?
AC_ARG_WITH(debug,
 [  --with-debug            switching on debugging (more verbose output)],
 [ CPPFLAGS="-Wall -g -fexceptions -DDO_DEBUG=1 $CPPFLAGS" ])
if test "$with_debug"; then echo "debugging enabled"; fi

dnl Check for optional netpbm PACKAGE: --with-netpbm=no == --without-netpbm
dnl LDFLAGS+=-R$withval/lib compiles the search path into the file ???
AC_ARG_WITH(netpbm,
 [  --with-netpbm=PATH      enter the PATH to netpbm package],
 [ if test "$withval" != "no"; then
    LDFLAGS="-L$withval/lib $LDFLAGS";\
    CPPFLAGS="-I$withval/include $CPPFLAGS";\
   fi ])
if test -n "$with_netpbm"; then echo "option: with_netpbm $with_netpbm"; fi

dnl Checks for libraries.
if test "$with_netpbm" != "no"; then
# netpbm-10.26 + SuSE-10.0: netpbm needs mathlib -lm
# netpbm-10    : libnetpbm + pam.h (+ p[bgpn]m.h, libp[bgpn]m.so as links)
# netpbm-9     : libpnm    + pnm.h (+ p[bgp]m.h)
# pnm_readpaminit (netpbm-10)
# pnm_readpnminit (netpbm-9,10)
# ToDo: how to check that -lm is needed?
LDFLAGS="-lm $LDFLAGS"
AC_SEARCH_LIBS(pnm_readpnminit,[netpbm pnm],[check_netpbm_h="pam.h pnm.h"],
 [ echo " * * * try option --with-netpbm=PATH"])
fi

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([unistd.h wchar.h ${check_netpbm_h}])

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
dnl AC_CHECK_TYPE(wchar_t,unsigned)

dnl Checks for library functions.
dnl this macro produces a warning: AC_TRY_RUN called without default ...
dnl The message can be ignored as long as you don't configure gOCR for 
dnl cross-compiling.
AC_FUNC_SETVBUF_REVERSED
AC_CHECK_FUNCS(wcschr wcsdup gettimeofday popen)

dnl Checks for system services

dnl obsolete: AC_OUTPUT(Makefile src/Makefile doc/Makefile man/Makefile)
dnl the light weight version of package comes without src/api
AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile man/Makefile])
dnl AC_CONFIG_COMMANDS([default],,)
AC_OUTPUT