tcl.m4

来自网络的iaxclient的协议栈源码

])

#--------------------------------------------------------------------
# TEA_CONFIG_CFLAGS
#
#	Try to determine the proper flags to pass to the compiler
#	for building shared libraries and other such nonsense.
#
# Arguments:
#	none
#
# Results:
#
#	Defines and substitutes the following vars:
#
#       DL_OBJS -       Name of the object file that implements dynamic
#                       loading for Tcl on this system.
#       DL_LIBS -       Library file(s) to include in tclsh and other base
#                       applications in order for the "load" command to work.
#       LDFLAGS -      Flags to pass to the compiler when linking object
#                       files into an executable application binary such
#                       as tclsh.
#       LD_SEARCH_FLAGS-Flags to pass to ld, such as "-R /usr/local/tcl/lib",
#                       that tell the run-time dynamic linker where to look
#                       for shared libraries such as libtcl.so.  Depends on
#                       the variable LIB_RUNTIME_DIR in the Makefile. Could
#                       be the same as CC_SEARCH_FLAGS if ${CC} is used to link.
#       CC_SEARCH_FLAGS-Flags to pass to ${CC}, such as "-Wl,-rpath,/usr/local/tcl/lib",
#                       that tell the run-time dynamic linker where to look
#                       for shared libraries such as libtcl.so.  Depends on
#                       the variable LIB_RUNTIME_DIR in the Makefile.
#       SHLIB_CFLAGS -  Flags to pass to cc when compiling the components
#                       of a shared library (may request position-independent
#                       code, among other things).
#       SHLIB_LD -      Base command to use for combining object files
#                       into a shared library.
#       SHLIB_LD_LIBS - Dependent libraries for the linker to scan when
#                       creating shared libraries.  This symbol typically
#                       goes at the end of the "ld" commands that build
#                       shared libraries. The value of the symbol is
#                       "${LIBS}" if all of the dependent libraries should
#                       be specified when creating a shared library.  If
#                       dependent libraries should not be specified (as on
#                       SunOS 4.x, where they cause the link to fail, or in
#                       general if Tcl and Tk aren't themselves shared
#                       libraries), then this symbol has an empty string
#                       as its value.
#       SHLIB_SUFFIX -  Suffix to use for the names of dynamically loadable
#                       extensions.  An empty string means we don't know how
#                       to use shared libraries on this platform.
#       LIB_SUFFIX -    Specifies everything that comes after the "libfoo"
#                       in a static or shared library name, using the $VERSION variable
#                       to put the version in the right place.  This is used
#                       by platforms that need non-standard library names.
#                       Examples:  ${VERSION}.so.1.1 on NetBSD, since it needs
#                       to have a version after the .so, and ${VERSION}.a
#                       on AIX, since a shared library needs to have
#                       a .a extension whereas shared objects for loadable
#                       extensions have a .so extension.  Defaults to
#                       ${VERSION}${SHLIB_SUFFIX}.
#       TCL_NEEDS_EXP_FILE -
#                       1 means that an export file is needed to link to a
#                       shared library.
#       TCL_EXP_FILE -  The name of the installed export / import file which
#                       should be used to link to the Tcl shared library.
#                       Empty if Tcl is unshared.
#       TCL_BUILD_EXP_FILE -
#                       The name of the built export / import file which
#                       should be used to link to the Tcl shared library.
#                       Empty if Tcl is unshared.
#	CFLAGS_DEBUG -
#			Flags used when running the compiler in debug mode
#	CFLAGS_OPTIMIZE -
#			Flags used when running the compiler in optimize mode
#	CFLAGS -	Additional CFLAGS added as necessary (usually 64-bit)
#
#--------------------------------------------------------------------

AC_DEFUN(TEA_CONFIG_CFLAGS, [
    dnl Make sure we are initialized
    AC_REQUIRE([TEA_INIT])

    # Step 0.a: Enable 64 bit support?

    AC_MSG_CHECKING([if 64bit support is requested])
    AC_ARG_ENABLE(64bit,
	AC_HELP_STRING([--enable-64bit],
	    [enable 64bit support (default: off)]),
	[do64bit=$enableval], [do64bit=no])
    AC_MSG_RESULT([$do64bit])

    # Step 0.b: Enable Solaris 64 bit VIS support?

    AC_MSG_CHECKING([if 64bit Sparc VIS support is requested])
    AC_ARG_ENABLE(64bit-vis,
	AC_HELP_STRING([--enable-64bit-vis],
	    [enable 64bit Sparc VIS support (default: off)]),
	[do64bitVIS=$enableval], [do64bitVIS=no])
    AC_MSG_RESULT([$do64bitVIS])

    if test "$do64bitVIS" = "yes"; then
	# Force 64bit on with VIS
	do64bit=yes
    fi

    # Step 0.c: Cross-compiling options for Windows/CE builds?

    if test "${TEA_PLATFORM}" = "windows" ; then
	AC_MSG_CHECKING([if Windows/CE build is requested])
	AC_ARG_ENABLE(wince,[  --enable-wince          enable Win/CE support (where applicable)], [doWince=$enableval], [doWince=no])
	AC_MSG_RESULT([$doWince])
    fi

    # Step 1: set the variable "system" to hold the name and version number
    # for the system.

    TEA_CONFIG_SYSTEM

    # Step 2: check for existence of -ldl library.  This is needed because
    # Linux can use either -ldl or -ldld for dynamic loading.

    AC_CHECK_LIB(dl, dlopen, have_dl=yes, have_dl=no)

    # Require ranlib early so we can override it in special cases below.

    AC_REQUIRE([AC_PROG_RANLIB])

    # Step 3: set configuration options based on system name and version.
    # This is similar to Tcl's unix/tcl.m4 except that we've added a
    # "windows" case.

    do64bit_ok=no
    LDFLAGS_ORIG="$LDFLAGS"
    # When ld needs options to work in 64-bit mode, put them in
    # LDFLAGS_ARCH so they eventually end up in LDFLAGS even if [load]
    # is disabled by the user. [Bug 1016796]
    LDFLAGS_ARCH=""
    TCL_EXPORT_FILE_SUFFIX=""
    UNSHARED_LIB_SUFFIX=""
    TCL_TRIM_DOTS='`echo ${PACKAGE_VERSION} | tr -d .`'
    ECHO_VERSION='`echo ${PACKAGE_VERSION}`'
    TCL_LIB_VERSIONS_OK=ok
    CFLAGS_DEBUG=-g
    CFLAGS_OPTIMIZE=-O
    if test "$GCC" = "yes" ; then
	CFLAGS_OPTIMIZE=-O2
	CFLAGS_WARNING="-Wall -Wno-implicit-int"
    else
	CFLAGS_WARNING=""
    fi
    TCL_NEEDS_EXP_FILE=0
    TCL_BUILD_EXP_FILE=""
    TCL_EXP_FILE=""
dnl FIXME: Replace AC_CHECK_PROG with AC_CHECK_TOOL once cross compiling is fixed.
dnl AC_CHECK_TOOL(AR, ar)
    AC_CHECK_PROG(AR, ar, ar)
    STLIB_LD='${AR} cr'
    LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH"
    case $system in
	windows)
	    # This is a 2-stage check to make sure we have the 64-bit SDK
	    # We have to know where the SDK is installed.
	    # This magic is based on MS Platform SDK for Win2003 SP1 - hobbs
	    # MACHINE is IX86 for LINK, but this is used by the manifest,
	    # which requires x86|amd64|ia64.
	    MACHINE="X86"
	    if test "$do64bit" != "no" ; then
		if test "x${MSSDK}x" = "xx" ; then
		    MSSDK="C:/Progra~1/Microsoft Platform SDK"
		fi
		MSSDK=`echo "$MSSDK" | sed -e  's!\\\!/!g'`
		PATH64=""
		case "$do64bit" in
		    amd64|x64|yes)
			MACHINE="AMD64" ; # default to AMD64 64-bit build
			PATH64="${MSSDK}/Bin/Win64/x86/AMD64"
			;;
		    ia64)
			MACHINE="IA64"
			PATH64="${MSSDK}/Bin/Win64"
			;;
		esac
		if test ! -d "${PATH64}" ; then
		    AC_MSG_WARN([Could not find 64-bit $MACHINE SDK to enable 64bit mode])
		    AC_MSG_WARN([Ensure latest Platform SDK is installed])
		    do64bit="no"
		else
		    AC_MSG_RESULT([   Using 64-bit $MACHINE mode])
		    do64bit_ok="yes"
		fi
	    fi

	    if test "$doWince" != "no" ; then
		if test "$do64bit" != "no" ; then
		    AC_MSG_ERROR([Windows/CE and 64-bit builds incompatible])
		fi
		if test "$GCC" = "yes" ; then
		    AC_MSG_ERROR([Windows/CE and GCC builds incompatible])
		fi
		TEA_PATH_CELIB
		# Set defaults for common evc4/PPC2003 setup
		# Currently Tcl requires 300+, possibly 420+ for sockets
		CEVERSION=420; 		# could be 211 300 301 400 420 ...
		TARGETCPU=ARMV4;	# could be ARMV4 ARM MIPS SH3 X86 ...
		ARCH=ARM;		# could be ARM MIPS X86EM ...
		PLATFORM="Pocket PC 2003"; # or "Pocket PC 2002"
		if test "$doWince" != "yes"; then
		    # If !yes then the user specified something
		    # Reset ARCH to allow user to skip specifying it
		    ARCH=
		    eval `echo $doWince | awk -F, '{ \
	    if (length([$]1)) { printf "CEVERSION=\"%s\"\n", [$]1; \
	    if ([$]1 < 400)   { printf "PLATFORM=\"Pocket PC 2002\"\n" } }; \
	    if (length([$]2)) { printf "TARGETCPU=\"%s\"\n", toupper([$]2) }; \
	    if (length([$]3)) { printf "ARCH=\"%s\"\n", toupper([$]3) }; \
	    if (length([$]4)) { printf "PLATFORM=\"%s\"\n", [$]4 }; \
		    }'`
		    if test "x${ARCH}" = "x" ; then
			ARCH=$TARGETCPU;
		    fi
		fi
		OSVERSION=WCE$CEVERSION;
	    	if test "x${WCEROOT}" = "x" ; then
			WCEROOT="C:/Program Files/Microsoft eMbedded C++ 4.0"
		    if test ! -d "${WCEROOT}" ; then
			WCEROOT="C:/Program Files/Microsoft eMbedded Tools"
		    fi
		fi
		if test "x${SDKROOT}" = "x" ; then
		    SDKROOT="C:/Program Files/Windows CE Tools"
		    if test ! -d "${SDKROOT}" ; then
			SDKROOT="C:/Windows CE Tools"
		    fi
		fi
		WCEROOT=`echo "$WCEROOT" | sed -e 's!\\\!/!g'`
		SDKROOT=`echo "$SDKROOT" | sed -e 's!\\\!/!g'`
		if test ! -d "${SDKROOT}/${OSVERSION}/${PLATFORM}/Lib/${TARGETCPU}" \
		    -o ! -d "${WCEROOT}/EVC/${OSVERSION}/bin"; then
		    AC_MSG_ERROR([could not find PocketPC SDK or target compiler to enable WinCE mode [$CEVERSION,$TARGETCPU,$ARCH,$PLATFORM]])
		    doWince="no"
		else
		    # We could PATH_NOSPACE these, but that's not important,
		    # as long as we quote them when used.
		    CEINCLUDE="${SDKROOT}/${OSVERSION}/${PLATFORM}/include"
		    if test -d "${CEINCLUDE}/${TARGETCPU}" ; then
			CEINCLUDE="${CEINCLUDE}/${TARGETCPU}"
		    fi
		    CELIBPATH="${SDKROOT}/${OSVERSION}/${PLATFORM}/Lib/${TARGETCPU}"
    		fi
	    fi

	    if test "$GCC" != "yes" ; then
	        if test "${SHARED_BUILD}" = "0" ; then
		    runtime=-MT
	        else
		    runtime=-MD
	        fi

                if test "$do64bit" != "no" ; then
		    # All this magic is necessary for the Win64 SDK RC1 - hobbs
		    CC="\"${PATH64}/cl.exe\""
		    CFLAGS="${CFLAGS} -I\"${MSSDK}/Include\" -I\"${MSSDK}/Include/crt\" -I\"${MSSDK}/Include/crt/sys\""
		    RC="\"${MSSDK}/bin/rc.exe\""
		    lflags="-nologo -MACHINE:${MACHINE} -LIBPATH:\"${MSSDK}/Lib/${MACHINE}\""
		    LINKBIN="\"${PATH64}/link.exe\""
		    CFLAGS_DEBUG="-nologo -Zi -Od -W3 ${runtime}d"
		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
		    # Avoid 'unresolved external symbol __security_cookie'
		    # errors, c.f. http://support.microsoft.com/?id=894573
		    TEA_ADD_LIBS([bufferoverflowU.lib])
		elif test "$doWince" != "no" ; then
		    CEBINROOT="${WCEROOT}/EVC/${OSVERSION}/bin"
		    if test "${TARGETCPU}" = "X86"; then
			CC="\"${CEBINROOT}/cl.exe\""
		    else
			CC="\"${CEBINROOT}/cl${ARCH}.exe\""
		    fi
		    CFLAGS="$CFLAGS -I\"${CELIB_DIR}/inc\" -I\"${CEINCLUDE}\""
		    RC="\"${WCEROOT}/Common/EVC/bin/rc.exe\""
		    arch=`echo ${ARCH} | awk '{print tolower([$]0)}'`
		    defs="${ARCH} _${ARCH}_ ${arch} PALM_SIZE _MT _WINDOWS"
		    if test "${SHARED_BUILD}" = "1" ; then
			# Static CE builds require static celib as well
		    	defs="${defs} _DLL"
		    fi
		    for i in $defs ; do
			AC_DEFINE_UNQUOTED($i, 1, [WinCE def ]$i)
		    done
		    AC_DEFINE_UNQUOTED(_WIN32_WCE, $CEVERSION, [_WIN32_WCE version])
		    AC_DEFINE_UNQUOTED(UNDER_CE, $CEVERSION, [UNDER_CE version])
		    CFLAGS_DEBUG="-nologo -Zi -Od"
		    CFLAGS_OPTIMIZE="-nologo -Ox"
		    lversion=`echo ${CEVERSION} | sed -e 's/\(.\)\(..\)/\1\.\2/'`
		    lflags="-MACHINE:${ARCH} -LIBPATH:\"${CELIBPATH}\" -subsystem:windowsce,${lversion} -nologo"
		    LINKBIN="\"${CEBINROOT}/link.exe\""
		    AC_SUBST(CELIB_DIR)
		else
		    RC="rc"
		    lflags="-nologo"
    		    LINKBIN="link"
		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
		fi
	    fi

	    if test "$GCC" = "yes"; then
		# mingw gcc mode
		RC="windres"
		CFLAGS_DEBUG="-g"
		CFLAGS_OPTIMIZE="-O2 -fomit-frame-pointer"
		SHLIB_LD="$CC -shared"
		UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
		LDFLAGS_CONSOLE="-wl,--subsystem,console ${lflags}"
		LDFLAGS_WINDOW="-wl,--subsystem,windows ${lflags}"
	    else
		SHLIB_LD="${LINKBIN} -dll ${lflags}"
		# link -lib only works when -lib is the first arg
		STLIB_LD="${LINKBIN} -lib ${lflags}"
		UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.lib'
		PATHTYPE=-w
		# For information on what debugtype is most useful, see:
		# http://msdn.microsoft.com/library/en-us/dnvc60/html/gendepdebug.asp
		# This essentially turns it all on.
		LDFLAGS_DEBUG="-debug:full -debugtype:both -warn:2"
		LDFLAGS_OPTIMIZE="-release"
		if test "$doWince" != "no" ; then
		    LDFLAGS_CONSOLE="-link ${lflags}"
		    LDFLAGS_WINDOW=${LDFLAGS_CONSOLE}
		else
		    LDFLAGS_CONSOLE="-link -subsystem:console ${lflags}"
		    LDFLAGS_WINDOW="-link -subsystem:windows ${lflags}"
		fi
	    fi

	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".dll"
	    SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.dll'

	    TCL_LIB_VERSIONS_OK=nodots
	    # Bogus to avoid getting this turned off
	    DL_OBJS="tclLoadNone.obj"
    	    ;;
	AIX-*)
	    if test "${TCL_THREADS}" = "1" -a "$GCC" != "yes" ; then
		# AIX requires the _r compiler when gcc isn't being used
		case "${CC}" in
		    *_r)
			# ok ...
			;;
		    *)
			CC=${CC}_r
			;;
		esac
		AC_MSG_RESULT([Using $CC for compiling with threads])
	    fi
	    LIBS="$LIBS -lc"
	    SHLIB_CFLAGS=""
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"

	    DL_OBJS="tclLoadDl.o"
	    LD_LIBRARY_PATH_VAR="LIBPATH"

	    # Check to enable 64-bit flags for compiler/linker on AIX 4+
	    if test "$do64bit" = "yes" -a "`uname -v`" -gt "3" ; then
		if test "$GCC" = "yes" ; then
		    AC_MSG_WARN([64bit mode not supported with GCC on $system])
		else 
		    do64bit_ok=yes
		    CFLAGS="$CFLAGS -q64"
		    LDFLAGS_ARCH="-q64"
		    RANLIB="${RANLIB} -X64"
		    AR="${AR} -X64"
		    SHLIB_LD_FLAGS="-b64"
		fi
	    fi

	    if test "`uname -m`" = "ia64" ; then
		# AIX-5 uses ELF style dynamic libraries on IA-64, but not PPC
		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
		# AIX-5 has dl* in libc.so
		DL_LIBS=""
		if test "$GCC" = "yes" ; then
		    CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
		else
		    CC_SEARCH_FLAGS='-R${LIB_RUNTIME_DIR}'
		fi
		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
	    else
		if test "$GCC" = "yes" ; then
		    SHLIB_LD="gcc -shared"
		else
		    SHLIB_LD="/bin/ld -bhalt:4 -bM:SRE -bE:lib.exp -H512 -T512 -bnoentry"
		fi
		SHLIB_LD="${TCL_SRC_DIR}/unix/ldAix ${SHLIB_LD} ${SHLIB_LD_FLAGS}"
		DL_LIBS="-ldl"
		CC_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
		TCL_NEEDS_EXP_FILE=1
		TCL_EXPORT_FILE_SUFFIX='${PACKAGE_VERSION}.exp'
	    fi

	    # AIX v<=4.1 has some different flags than 4.2+
	    if test "$system" = "AIX-4.1" -o "`uname -v`" -lt "4" ; then
		AC_LIBOBJ([tclLoadAix])
		DL_LIBS="-lld"
	    fi

	    # On AIX <=v4 systems, libbsd.a has to be linked in to support
	    # non-blocking file IO.  This library has to be linked in after
	    # the MATH_LIBS or it breaks the pow() function.  The way to
	    # insure proper sequencing, is to add it to the tail of MATH_LIBS.
	    # This library also supplies gettimeofday.
	    #
	    # AIX does not have a timezone field in struct tm. When the AIX
	    # bsd library is used, the timezone global and the gettimeofday
	    # methods are to be avoided for timezone deduction instead, we
	    # deduce the timezone by comparing the localtime result on a
	    # known GMT value.