configure.ac

AC_PREREQ([2.68])
AC_INIT([telegram-cli], [1.0])
AC_CONFIG_SRCDIR([config.h.in])
AC_CONFIG_HEADERS([config.h])

m4_include([m4_ax_check_openssl.m4])
m4_include([m4_ax_check_zlib.m4])

# Checks for programs.
AC_PROG_CC
AC_CHECK_TOOL(AR, ar, [AC_MSG_ERROR([No ar found.  Huh?])])

# BSD locations for headers and libraries from packages, Linux locations for self-compiled stuff.
CPPFLAGS="$CPPFLAGS -I/usr/local/include"
LDFLAGS="$LDFLAGS -L/usr/local/lib"

# Checks for libraries.
AC_SEARCH_LIBS([clock_gettime], [rt])

EVENT_VER=""
EXTRA_OBJECTS=""

#     OPENSSL_INCLUDES to the include directives required
#     OPENSSL_LIBS to the -l directives required
#     OPENSSL_LDFLAGS to the -L or -R flags required

AC_ARG_ENABLE(openssl,[  --disable-openssl	  disables OpenSSL, and don't link against it
			  (this can't read *.pub files, though.)],
  [ 
  if test "x$enableval" = "xno" ; then    
  	AC_DEFINE([TGL_AVOID_OPENSSL],[1],[avoid OpenSSL entirely, use libgcrypt instead (this can't read *.pub files, though.)])
    AC_CHECK_LIB([gcrypt], [gcry_mpi_snatch], [], [AC_MSG_ERROR(["Need libgcrypt >= 1.60"])])
  else
    # Don't be annoying, so don't inform the user about --disable-openssl
    AX_CHECK_OPENSSL(,[AC_MSG_ERROR([No openssl found.])])
  fi 
  ],[
  AX_CHECK_OPENSSL(,[AC_MSG_ERROR([No openssl found. With --disable-openssl, libtgl will use libgcrypt instead.])])
  ])

AX_CHECK_ZLIB(, [AC_MSG_ERROR([No zlib found])])

AC_ARG_ENABLE(extf,[  --enable-extf		  enables extended queries system],
  [ 
  if test "x$enableval" = "xno" ; then    
    AC_DEFINE([DISABLE_EXTF],[1],[disable extf queries])
  fi 
  ],[
  ])

AC_ARG_ENABLE(libevent,[  --enable-libevent	  include libevent-based net and timers],
  [ 
  if test "x$enableval" = "xyes" ; then
    AC_CHECK_LIB([event], [event_base_new], [], [AC_MSG_ERROR([no libevent found])])
    AC_CHECK_HEADER(event2/event.h, [AC_DEFINE([EVENT_V2], [1], [Use libevent v2])], [
      AC_CHECK_HEADER(event.h, [AC_DEFINE([EVENT_V1], [1], [Use libevent v1])], [AC_MSG_ERROR([no libevent found])])
    ])
    EXTRA_OBJECTS="${EXTRA_OBJECTS} objs/tgl-net.o objs/tgl-timers.o"
  fi
  ],[
  ])

AC_ARG_ENABLE(valgrind,[  --enable-valgrind	  fixes for correct valgrind work],
  [ 
  if test "x$enableval" = "xyes" ; then
    AC_CHECK_HEADER(valgrind/memcheck.h, [AC_DEFINE([VALGRIND_FIXES], [1], [fixed for correct valgrind work])], [
    ])
  fi
  ],[
  ])
    
# Checks for header files.
AC_CHECK_HEADERS([fcntl.h malloc.h netdb.h stdlib.h string.h unistd.h arpa/inet.h mach/mach.h netinet/in.h sys/file.h sys/socket.h termios.h])

# FreeBSD needs -lexecinfo
AC_CHECK_HEADERS([execinfo.h], [tgl_found_execinfo_header=yes; break;])
AS_IF([test "x$tgl_found_execinfo_header" = "xyes"],
	[AC_SEARCH_LIBS([backtrace_symbols_fd], [execinfo])])


# Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_SIZE_T
AC_TYPE_UID_T
AC_C_INLINE

# Checks for library functions.
AC_CHECK_FUNCS([alarm endpwent malloc memset memmove mkdir realloc select socket strdup strndup uname])

AC_SUBST(EXTRA_LIBS)
AC_SUBST(EXTRA_OBJECTS)
AC_CONFIG_FILES([Makefile])
AC_OUTPUT