aclocal.m4

PPP协议的实现演示

AC_TRY_LINK(dnl
[
#include<tiffio.h>
],
    [return (TIFFOpen( "", "r") == 0); ],
[
    kde_cv_libtiff_$1="-l$1 $LIBJPEG $LIBZ"
], [
    kde_cv_libtiff_$1=no
])

LIBS="$kde_save_LIBS"
CXXFLAGS="$kde_save_CXXFLAGS"

])

if test "$kde_cv_libtiff_$1" = "no"; then
    AC_MSG_RESULT(no)
    LIBTIFF=""
    $3
else
    LIBTIFF="$kde_cv_libtiff_$1"
    AC_MSG_RESULT(yes)
    AC_DEFINE_UNQUOTED(HAVE_LIBTIFF, 1, [Define if you have libtiff])
    $2
fi

])

AC_DEFUN(AC_FIND_TIFF,
[
AC_REQUIRE([K_PATH_X])
AC_REQUIRE([AC_FIND_ZLIB])
AC_REQUIRE([AC_FIND_JPEG])
AC_REQUIRE([KDE_CHECK_EXTRA_LIBS])

KDE_TRY_TIFFLIB(tiff, [],
   KDE_TRY_TIFFLIB(tiff34))

AC_SUBST(LIBTIFF)
])


AC_DEFUN(AC_FIND_PNG,
[
AC_REQUIRE([AC_FIND_ZLIB])
AC_REQUIRE([KDE_CHECK_EXTRA_LIBS])
AC_MSG_CHECKING([for libpng])
AC_CACHE_VAL(ac_cv_lib_png,
[
kde_save_LIBS="$LIBS"
LIBS="$LIBS $all_libraries $USER_LDFLAGS -lpng $LIBZ -lm -lX11 $LIBSOCKET"
kde_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $all_includes $USER_INCLUDES"
AC_LANG_C
AC_TRY_LINK(dnl
    [
    #include<png.h>
    ],
    [
    png_structp png_ptr = png_create_read_struct(  /* image ptr */
		PNG_LIBPNG_VER_STRING, 0, 0, 0 );
    return( png_ptr != 0 );
    ],
    eval "ac_cv_lib_png='-lpng $LIBZ -lm'",
    eval "ac_cv_lib_png=no"
)
LIBS="$kde_save_LIBS"
CFLAGS="$kde_save_CFLAGS"
])dnl
if eval "test ! \"`echo $ac_cv_lib_png`\" = no"; then
  AC_DEFINE_UNQUOTED(HAVE_LIBPNG, 1, [Define if you have libpng])
  LIBPNG="$ac_cv_lib_png"
  AC_SUBST(LIBPNG)
  AC_MSG_RESULT($ac_cv_lib_png)
else
  AC_MSG_RESULT(no)
  LIBPNG=""
  AC_SUBST(LIBPNG)
fi
])

AC_DEFUN(AC_CHECK_BOOL,
[
	AC_MSG_CHECKING([for bool])
        AC_CACHE_VAL(ac_cv_have_bool,
        [
		AC_LANG_CPLUSPLUS
          	AC_TRY_COMPILE([],
                 [bool aBool = true;],
                 [ac_cv_have_bool="yes"],
                 [ac_cv_have_bool="no"])
        ]) dnl end AC_CHECK_VAL
        AC_MSG_RESULT($ac_cv_have_bool)
        if test "$ac_cv_have_bool" = "yes"; then
        	AC_DEFINE(HAVE_BOOL, 1, [Define if the C++ compiler supports BOOL])
        fi
])

AC_DEFUN(AC_CHECK_GNU_EXTENSIONS,
[
AC_MSG_CHECKING(if you need GNU extensions)
AC_CACHE_VAL(ac_cv_gnu_extensions,
[
cat > conftest.c << EOF
#include <features.h>

#ifdef __GNU_LIBRARY__
yes
#endif
EOF

if (eval "$ac_cpp conftest.c") 2>&5 |
  egrep "yes" >/dev/null 2>&1; then
  rm -rf conftest*
  ac_cv_gnu_extensions=yes
else
  ac_cv_gnu_extensions=no
fi
])

AC_MSG_RESULT($ac_cv_gnu_extensions)
if test "$ac_cv_gnu_extensions" = "yes"; then
  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
fi
])

AC_DEFUN(KDE_CHECK_COMPILER_FLAG,
[
AC_REQUIRE([AC_CHECK_COMPILERS])
AC_MSG_CHECKING(whether $CXX supports -$1)
kde_cache=`echo $1 | sed 'y%.=/+-%___p_%'`
AC_CACHE_VAL(kde_cv_prog_cxx_$kde_cache,
[
echo 'void f(){}' >conftest.cc
if test -z "`$CXX -$1 -c conftest.cc 2>&1`"; then
  eval "kde_cv_prog_cxx_$kde_cache=yes"
else
  eval "kde_cv_prog_cxx_$kde_cache=no"
fi
rm -f conftest*
])
if eval "test \"`echo '$kde_cv_prog_cxx_'$kde_cache`\" = yes"; then
 AC_MSG_RESULT(yes)
 :
 $2
else
 AC_MSG_RESULT(no)
 :
 $3
fi
])

AC_DEFUN(AC_CHECK_COMPILERS,
[
  dnl this is somehow a fat lie, but prevents other macros from double checking
  AC_PROVIDE([AC_PROG_CC])
  AC_PROVIDE([AC_PROG_CPP])
  AC_ARG_ENABLE(debug,[  --enable-debug          creates debugging code [default=no]],
  [
   if test $enableval = "no"; dnl
     then
       kde_use_debug_code="no"
       kde_use_debug_define=yes
     else
       kde_use_debug_code="yes"
       kde_use_debug_define=no
   fi
  ], [kde_use_debug_code="no"
      kde_use_debug_define=no
    ])

  AC_ARG_ENABLE(strict,[  --enable-strict         compiles with strict compiler options (may not work!)],
   [
    if test $enableval = "no"; then
         kde_use_strict_options="no"
       else
         kde_use_strict_options="yes"
    fi
   ], [kde_use_strict_options="no"])

dnl this was AC_PROG_CC. I had to include it manualy, since I had to patch it
  AC_MSG_CHECKING(for a C-Compiler)
  dnl if there is one, print out. if not, don't matter
  AC_MSG_RESULT($CC)

  if test -z "$CC"; then AC_CHECK_PROG(CC, gcc, gcc) fi
  if test -z "$CC"; then AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) fi
  if test -z "$CC"; then AC_CHECK_PROG(CC, xlc, xlc) fi
  test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])

  AC_PROG_CC_WORKS
  AC_PROG_CC_GNU

  if test $ac_cv_prog_gcc = yes; then
    GCC=yes
  else
    GCC=
  fi

  if test -z "$CFLAGS"; then
    if test "$kde_use_debug_code" = "yes"; then
      AC_PROG_CC_G
      if test $ac_cv_prog_cc_g = yes; then
        CFLAGS="-g"
      fi
    else
      if test "$GCC" = "yes"; then
        CFLAGS="-O2"
      else
        CFLAGS=""
      fi
      if test "$kde_use_debug_define" = "yes"; then
         CFLAGS="$CFLAGS -DNDEBUG"
      fi
    fi

    if test "$GCC" = "yes"; then
     CFLAGS="$CFLAGS"

     if test "$kde_use_strict_options" = "yes"; then
	CFLAGS="$CFLAGS -W -Wall -ansi -pedantic -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings"
     fi
    fi

  fi

  case "$host" in
  *-*-sysv4.2uw*) CFLAGS="$CFLAGS -D_UNIXWARE";;
  esac

  if test -z "$LDFLAGS" && test "$kde_use_debug_code" = "no" && test "$GCC" = "yes"; then
     LDFLAGS="-s"
  fi


dnl this is AC_PROG_CPP. I had to include it here, since autoconf checks
dnl dependecies between AC_PROG_CPP and AC_PROG_CC (or is it automake?)

  AC_MSG_CHECKING(how to run the C preprocessor)
  # On Suns, sometimes $CPP names a directory.
  if test -n "$CPP" && test -d "$CPP"; then
    CPP=
  fi
  if test -z "$CPP"; then
  AC_CACHE_VAL(ac_cv_prog_CPP,
  [  # This must be in double quotes, not single quotes, because CPP may get
    # substituted into the Makefile and "${CC-cc}" will confuse make.
    CPP="${CC-cc} -E"
    # On the NeXT, cc -E runs the code through the compiler's parser,
    # not just through cpp.
    dnl Use a header file that comes with gcc, so configuring glibc
    dnl with a fresh cross-compiler works.
    AC_TRY_CPP([#include <assert.h>
    Syntax Error], ,
    CPP="${CC-cc} -E -traditional-cpp"
    AC_TRY_CPP([#include <assert.h>
    Syntax Error], , CPP=/lib/cpp))
    ac_cv_prog_CPP="$CPP"])dnl
    CPP="$ac_cv_prog_CPP"
  else
    ac_cv_prog_CPP="$CPP"
  fi
  AC_MSG_RESULT($CPP)
  AC_SUBST(CPP)dnl


  AC_MSG_CHECKING(for a C++-Compiler)
  dnl if there is one, print out. if not, don't matter
  AC_MSG_RESULT($CXX)

  if test -z "$CXX"; then AC_CHECK_PROG(CXX, g++, g++) fi
  if test -z "$CXX"; then AC_CHECK_PROG(CXX, CC, CC) fi
  if test -z "$CXX"; then AC_CHECK_PROG(CXX, xlC, xlC) fi
  if test -z "$CXX"; then AC_CHECK_PROG(CXX, DCC, DCC) fi
  test -z "$CXX" && AC_MSG_ERROR([no acceptable C++-compiler found in \$PATH])

  AC_PROG_CXX_WORKS
  AC_PROG_CXX_GNU

  if test $ac_cv_prog_gxx = yes; then
    GXX=yes
  fi

  if test -z "$CXXFLAGS"; then
    if test "$kde_use_debug_code" = "yes"; then
      AC_PROG_CXX_G
      if test $ac_cv_prog_cxx_g = yes; then
        CXXFLAGS="-g"
      fi
    else
      if test "$GXX" = "yes"; then
         CXXFLAGS="-O2"
      fi
      if test "$kde_use_debug_define" = "yes"; then
         CXXFLAGS="$CXXFLAGS -DNDEBUG"
      fi
    fi

    KDE_CHECK_COMPILER_FLAG(fno-exceptions,
	[
	  CXXFLAGS="$CXXFLAGS -fno-exceptions"
	])

    KDE_CHECK_COMPILER_FLAG(fno-rtti,
	[
	  CXXFLAGS="$CXXFLAGS -fno-rtti"
	])

    KDE_CHECK_COMPILER_FLAG(fno-check-new,
	[
	  CXXFLAGS="$CXXFLAGS -fno-check-new"
	])

    if test "$GXX" = "yes"; then
       CXXFLAGS="$CXXFLAGS"

       if test "$kde_use_debug_code" = "yes"; then
	 CXXFLAGS="$CXXFLAGS -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings"

         KDE_CHECK_COMPILER_FLAG(Wno-long-long,
	 [
	   CXXFLAGS="$CXXFLAGS -Wno-long-long"
	 ])
         KDE_CHECK_COMPILER_FLAG(fno-builtin,
         [
           CXXFLAGS="$CXXFLAGS -fno-builtin"
         ])
	
       fi

       if test "$kde_use_strict_options" = "yes"; then
	CXXFLAGS="$CXXFLAGS -Wcast-qual -Wbad-function-cast -Wshadow -Wcast-align -Woverloaded-virtual"
       fi

       if test "$kde_very_strict" = "yes"; then
         CXXFLAGS="$CXXFLAGS -Wold-style-cast -Wredundant-decls -Wconversion"
       fi
    fi
  fi

    KDE_CHECK_COMPILER_FLAG(fexceptions,
	[
	  USE_EXCEPTIONS="-fexceptions"
	],
	  USE_EXCEPTIONS=
	)
    AC_SUBST(USE_EXCEPTIONS)

    KDE_CHECK_COMPILER_FLAG(frtti,
	[
	  USE_RTTI="-frtti"
	],
	  USE_RTTI=
	)
    AC_SUBST(USE_RTTI)

    case "$host" in
      *-*-sysv4.2uw*) CXXFLAGS="$CXXFLAGS -D_UNIXWARE";;
    esac

    AC_PROVIDE(AC_PROG_CXXCPP)

    AC_MSG_CHECKING(how to run the C++ preprocessor)
    if test -z "$CXXCPP"; then
      AC_CACHE_VAL(ac_cv_prog_CXXCPP,
      [
         AC_LANG_SAVE[]dnl
         AC_LANG_CPLUSPLUS[]dnl
         CXXCPP="${CXX-g++} -E"
         AC_TRY_CPP([#include <stdlib.h>], , CXXCPP=/lib/cpp)
         ac_cv_prog_CXXCPP="$CXXCPP"
         AC_LANG_RESTORE[]dnl
     ])dnl
     CXXCPP="$ac_cv_prog_CXXCPP"
     fi
    AC_MSG_RESULT($CXXCPP)
    AC_SUBST(CXXCPP)dnl

    # the following is to allow programs, that are known to
    # have problems when compiled with -O2
    if test -n "$CXXFLAGS"; then
      kde_safe_IFS=$IFS
      IFS=" "
      NOOPT_CXXFLAGS=""
      for i in $CXXFLAGS; do
        if test ! "$i" = "-O2"; then
          NOOPT_CXXFLAGS="$NOOPT_CXXFLAGS $i"
        fi
      done
      IFS=$kde_safe_IFS
    fi
    AC_SUBST(NOOPT_CXXFLAGS)

    KDE_CHECK_FINAL

    ifdef([AM_DEPENDENCIES], AC_REQUIRE([KDE_ADD_DEPENDENCIES]), [])

    KDE_CXXFLAGS=
    AC_SUBST(KDE_CXXFLAGS)
])

AC_DEFUN(KDE_ADD_DEPENDENCIES,
[
   [A]M_DEPENDENCIES(CC)
   [A]M_DEPENDENCIES(CXX)
])

dnl just a wrapper to clean up configure.in
AC_DEFUN(KDE_PROG_LIBTOOL,
[
AC_REQUIRE([AC_CHECK_COMPILERS])
AC_REQUIRE([AC_ENABLE_SHARED])
AC_REQUIRE([AC_ENABLE_STATIC])

if test -z "$LIBTOOL"; then
  dnl libtool is only for C, so I must force him
  dnl to find the correct flags for C++
  kde_save_cc=$CC
  kde_save_cflags="$CFLAGS"
  CC=$CXX
  CFLAGS="$CXXFLAGS"
  AC_LANG_SAVE
  AC_LANG_C
  AC_LIBTOOL_DLOPEN
  AM_PROG_LIBTOOL
#  LIBTOOL="$LIBTOOL --silent"
  dnl AC_SUBST(LIBTOOL)
  AC_LANG_RESTORE
  CC=$kde_save_cc
  CFLAGS="$kde_save_cflags"
  LIBTOOL_SHELL='/bin/sh ./libtool'
else
  LIBTOOL_SHELL=$LIBTOOL
fi
])

AC_DEFUN(KDE_DO_IT_ALL,
[
AC_CANONICAL_SYSTEM
AC_ARG_PROGRAM
AM_INIT_AUTOMAKE($1, $2)
AM_DISABLE_LIBRARIES
AC_PREFIX_DEFAULT(${KDEDIR:-/usr/local/kde})
AC_CHECK_COMPILERS
KDE_PROG_LIBTOOL
AM_KDE_WITH_NLS
AC_PATH_KDE
])

AC_DEFUN(AC_CHECK_RPATH,
[
AC_MSG_CHECKING(for rpath)
AC_ARG_ENABLE(rpath,
      [  --disable-rpath         do not use the rpath feature of ld],
      USE_RPATH=$enableval, USE_RPATH=yes)

if test -z "$KDE_RPATH" && test "$USE_RPATH" = "yes"; then

  KDE_RPATH="-rpath \$(kde_libraries)"

  if test -n "$qt_libraries"; then
    KDE_RPATH="$KDE_RPATH -rpath \$(qt_libraries)"
  fi
  dnl $x_libraries is set to /usr/lib in case
  if test -n "$X_LDFLAGS"; then
    KDE_RPATH="$KDE_RPATH -rpath \$(x_libraries)"
  fi
  if test -n "$KDE_EXTRA_RPATH"; then
    KDE_RPATH="$KDE_RPATH \$(KDE_EXTRA_RPATH)"
  fi
fi
AC_SUBST(KDE_EXTRA_RPATH)
AC_SUBST(KDE_RPATH)
AC_MSG_RESULT($USE_RPATH)
])

dnl Check for the type of the third argument of getsockname
AC_DEFUN(AC_CHECK_KSIZE_T,
[AC_MSG_CHECKING(for the third argument of getsockname)
AC_CACHE_VAL(ac_cv_ksize_t,
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
[AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
socklen_t a=0;
getsockname(0,(struct sockaddr*)0, &a);
],
ac_cv_ksize_t=socklen_t,
ac_cv_ksize_t=)
if test -z "$ac_cv_ksize_t"; then
ac_safe_cxxflags="$CXXFLAGS"
if test "$GCC" = "yes"; then
  CXXFLAGS="-Werror $CXXFLAGS"
fi
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
int a=0;
getsockname(0,(struct sockaddr*)0, &a);
],
ac_cv_ksize_t=int,
ac_cv_ksize_t=size_t)
CXXFLAGS="$ac_safe_cxxflags"
fi
AC_LANG_RESTORE
])

if test -z "$ac_cv_ksize_t"; then