configure.in

tcl是工具命令语言

#	The check below checks whether <sys/wait.h> defines the type
#	"union wait" correctly.  It's needed because of weirdness in
#	HP-UX where "union wait" is defined in both the BSD and SYS-V
#	environments.  Checking the usability of WIFEXITED seems to do
#	the trick.
#--------------------------------------------------------------------

AC_MSG_CHECKING([union wait])
AC_CACHE_VAL(tcl_cv_union_wait,
    AC_TRY_LINK([#include <sys/types.h> 
#include <sys/wait.h>], [
union wait x;
WIFEXITED(x);		/* Generates compiler error if WIFEXITED
			 * uses an int. */
    ], tcl_cv_union_wait=yes, tcl_cv_union_wait=no))
AC_MSG_RESULT($tcl_cv_union_wait)
if test $tcl_cv_union_wait = no; then
    AC_DEFINE(NO_UNION_WAIT)
fi

#--------------------------------------------------------------------
#	Check whether there is an strncasecmp function on this system.
#	This is a bit tricky because under SCO it's in -lsocket and
#	under Sequent Dynix it's in -linet.
#--------------------------------------------------------------------

AC_CHECK_FUNC(strncasecmp, tcl_ok=1, tcl_ok=0)
if test "$tcl_ok" = 0; then
    AC_CHECK_LIB(socket, strncasecmp, tcl_ok=1, tcl_ok=0)
fi
if test "$tcl_ok" = 0; then
    AC_CHECK_LIB(inet, strncasecmp, tcl_ok=1, tcl_ok=0)
fi
if test "$tcl_ok" = 0; then
    LIBOBJS="$LIBOBJS strncasecmp.o"
fi

#--------------------------------------------------------------------
#	The code below deals with several issues related to gettimeofday:
#	1. Some systems don't provide a gettimeofday function at all
#	   (set NO_GETTOD if this is the case).
#	2. SGI systems don't use the BSD form of the gettimeofday function,
#	   but they have a BSDgettimeofday function that can be used instead.
#	3. See if gettimeofday is declared in the <sys/time.h> header file.
#	   if not, set the GETTOD_NOT_DECLARED flag so that tclPort.h can
#	   declare it.
#--------------------------------------------------------------------

AC_CHECK_FUNC(BSDgettimeofday,
    [AC_DEFINE(HAVE_BSDGETTIMEOFDAY)], [
    AC_CHECK_FUNC(gettimeofday, , [AC_DEFINE(NO_GETTOD)])
])
AC_MSG_CHECKING([for gettimeofday declaration])
AC_CACHE_VAL(tcl_cv_grep_gettimeofday,
    AC_EGREP_HEADER(gettimeofday, sys/time.h,
	tcl_cv_grep_gettimeofday=present, tcl_cv_grep_gettimeofday=missing))
AC_MSG_RESULT($tcl_cv_grep_gettimeofday)
if test $tcl_cv_grep_gettimeofday = missing ; then
    AC_DEFINE(GETTOD_NOT_DECLARED)
fi

#--------------------------------------------------------------------
#	The following code checks to see whether it is possible to get
#	signed chars on this platform.  This is needed in order to
#	properly generate sign-extended ints from character values.
#--------------------------------------------------------------------

AC_C_CHAR_UNSIGNED
AC_MSG_CHECKING([signed char declarations])
AC_CACHE_VAL(tcl_cv_char_signed,
    AC_TRY_COMPILE(, [
	signed char *p;
	p = 0;
	], tcl_cv_char_signed=yes, tcl_cv_char_signed=no))
AC_MSG_RESULT($tcl_cv_char_signed)
if test $tcl_cv_char_signed = yes; then
    AC_DEFINE(HAVE_SIGNED_CHAR)
fi

#--------------------------------------------------------------------
#  Does putenv() copy or not?  We need to know to avoid memory leaks.
#--------------------------------------------------------------------

AC_MSG_CHECKING([for a putenv() that copies the buffer])
AC_CACHE_VAL(tcl_cv_putenv_copy,
    AC_TRY_RUN([
	#include <stdlib.h>
	#define OURVAR "havecopy=yes"
	int main (int argc, char *argv[])
	{
	    char *foo, *bar;
	    foo = (char *)strdup(OURVAR);
	    putenv(foo);
	    strcpy((char *)(strchr(foo, '=') + 1), "no");
	    bar = getenv("havecopy");
	    if (!strcmp(bar, "no")) {
		/* doesnt copy */
		return 0;
	    } else {
		/* does copy */
		return 1;
	    }
	}
    ],
    tcl_cv_putenv_copy=no,
    tcl_cv_putenv_copy=yes,
    tcl_cv_putenv_copy=no)
)
AC_MSG_RESULT($tcl_cv_putenv_copy)
if test $tcl_cv_putenv_copy = yes; then
    AC_DEFINE(HAVE_PUTENV_THAT_COPIES)
fi

#--------------------------------------------------------------------
# Check for support of nl_langinfo function
#--------------------------------------------------------------------

SC_ENABLE_LANGINFO

#--------------------------------------------------------------------
# Look for libraries that we will need when compiling the Tcl shell
#--------------------------------------------------------------------

SC_TCL_LINK_LIBS

# Add the threads support libraries

LIBS="$LIBS$THREADS_LIBS"

SC_ENABLE_SHARED

#--------------------------------------------------------------------
# The statements below define a collection of compile flags.  This
# macro depends on the value of SHARED_BUILD, and should be called
# after SC_ENABLE_SHARED checks the configure switches.
#--------------------------------------------------------------------

SC_CONFIG_CFLAGS

SC_ENABLE_SYMBOLS

TCL_DBGX=${DBGX}

#--------------------------------------------------------------------
#	The statements below check for systems where POSIX-style
#	non-blocking I/O (O_NONBLOCK) doesn't work or is unimplemented. 
#	On these systems (mostly older ones), use the old BSD-style
#	FIONBIO approach instead.
#--------------------------------------------------------------------

SC_BLOCKING_STYLE

#--------------------------------------------------------------------
#	The statements below define a collection of symbols related to
#	building libtcl as a shared library instead of a static library.
#--------------------------------------------------------------------

TCL_UNSHARED_LIB_SUFFIX=${UNSHARED_LIB_SUFFIX}
TCL_SHARED_LIB_SUFFIX=${SHARED_LIB_SUFFIX}
eval "TCL_LIB_FILE=libtcl${LIB_SUFFIX}"

SC_ENABLE_FRAMEWORK

# tclConfig.sh needs a version of the _LIB_SUFFIX that has been eval'ed
# so that the backslashes quoting the DBX braces are dropped.

# Trick to replace DBGX with TCL_DBGX
DBGX='${TCL_DBGX}'
eval "TCL_LIB_FILE=${TCL_LIB_FILE}"

# Note:  in the following variable, it's important to use the absolute
# path name of the Tcl directory rather than "..":  this is because
# AIX remembers this path and will attempt to use it at run-time to look
# up the Tcl library.

if test "$FRAMEWORK_BUILD" = "1" ; then
    TCL_BUILD_LIB_SPEC="-F`pwd` -framework Tcl"
    TCL_LIB_SPEC="-framework Tcl"
    TCL_LIB_FILE="Tcl"
elif test "$SHARED_BUILD" = "0" || test "$TCL_NEEDS_EXP_FILE" = "0"; then
    if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
        TCL_LIB_FLAG="-ltcl${TCL_VERSION}\${TCL_DBGX}"
    else
        TCL_LIB_FLAG="-ltcl`echo ${TCL_VERSION} | tr -d .`\${TCL_DBGX}"
    fi
    TCL_BUILD_LIB_SPEC="-L`pwd` ${TCL_LIB_FLAG}"
    TCL_LIB_SPEC="-L${libdir} ${TCL_LIB_FLAG}"
else
    TCL_BUILD_EXP_FILE="lib.exp"
    eval "TCL_EXP_FILE=libtcl${TCL_EXPORT_FILE_SUFFIX}"

    # Replace DBGX with TCL_DBGX
    eval "TCL_EXP_FILE=\"${TCL_EXP_FILE}\""
    
    if test "$GCC" = "yes" ; then
	TCL_BUILD_LIB_SPEC="-Wl,-bI:`pwd`/${TCL_BUILD_EXP_FILE} -L`pwd`"
	TCL_LIB_SPEC="-Wl,-bI:${libdir}/${TCL_EXP_FILE} -L`pwd`"
    else
	TCL_BUILD_LIB_SPEC="-bI:`pwd`/${TCL_BUILD_EXP_FILE}"
	TCL_LIB_SPEC="-bI:${libdir}/${TCL_EXP_FILE}"
    fi
fi
VERSION='${VERSION}'
eval "CFG_TCL_SHARED_LIB_SUFFIX=${TCL_SHARED_LIB_SUFFIX}"
eval "CFG_TCL_UNSHARED_LIB_SUFFIX=${TCL_UNSHARED_LIB_SUFFIX}"
eval "CFG_TCL_EXPORT_FILE_SUFFIX=${TCL_EXPORT_FILE_SUFFIX}"
VERSION=${TCL_VERSION}

#--------------------------------------------------------------------
#	The statements below define the symbol TCL_PACKAGE_PATH, which
#	gives a list of directories that may contain packages.  The list
#	consists of one directory for machine-dependent binaries and
#	another for platform-independent scripts.
#--------------------------------------------------------------------

if test "$FRAMEWORK_BUILD" = "1" ; then
    TCL_PACKAGE_PATH="${libdir}/Resources/Scripts"
elif test "$prefix" != "$exec_prefix"; then
    TCL_PACKAGE_PATH="${libdir} ${prefix}/lib"
else
    TCL_PACKAGE_PATH="${prefix}/lib"
fi

#--------------------------------------------------------------------
#       The statements below define various symbols relating to Tcl
#       stub support.
#--------------------------------------------------------------------

# Replace ${VERSION} with contents of ${TCL_VERSION}
eval "TCL_STUB_LIB_FILE=libtclstub${TCL_UNSHARED_LIB_SUFFIX}"
# Replace DBGX with TCL_DBGX
eval "TCL_STUB_LIB_FILE=\"${TCL_STUB_LIB_FILE}\""

if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
    TCL_STUB_LIB_FLAG="-ltclstub${TCL_VERSION}\${TCL_DBGX}"
else
    TCL_STUB_LIB_FLAG="-ltclstub`echo ${TCL_VERSION} | tr -d .`\${TCL_DBGX}"
fi

TCL_BUILD_STUB_LIB_SPEC="-L`pwd` ${TCL_STUB_LIB_FLAG}"
TCL_STUB_LIB_SPEC="-L${libdir} ${TCL_STUB_LIB_FLAG}"
TCL_BUILD_STUB_LIB_PATH="`pwd`/${TCL_STUB_LIB_FILE}"
TCL_STUB_LIB_PATH="${libdir}/${TCL_STUB_LIB_FILE}"

# Install time header dir can be set via --includedir
eval "TCL_INCLUDE_SPEC=\"-I${includedir}\""

#------------------------------------------------------------------------
# tclConfig.sh refers to this by a different name
#------------------------------------------------------------------------

TCL_SHARED_BUILD=${SHARED_BUILD}

AC_SUBST(TCL_VERSION)
AC_SUBST(TCL_MAJOR_VERSION)
AC_SUBST(TCL_MINOR_VERSION)
AC_SUBST(TCL_PATCH_LEVEL)

AC_SUBST(TCL_LIB_FILE)
AC_SUBST(TCL_LIB_FLAG)
AC_SUBST(TCL_LIB_SPEC)
AC_SUBST(TCL_STUB_LIB_FILE)
AC_SUBST(TCL_STUB_LIB_FLAG)
AC_SUBST(TCL_STUB_LIB_SPEC)
AC_SUBST(TCL_STUB_LIB_PATH)
AC_SUBST(TCL_INCLUDE_SPEC)
AC_SUBST(TCL_BUILD_STUB_LIB_SPEC)
AC_SUBST(TCL_BUILD_STUB_LIB_PATH)

AC_SUBST(TCL_SRC_DIR)
AC_SUBST(TCL_DBGX)
AC_SUBST(CFG_TCL_SHARED_LIB_SUFFIX)
AC_SUBST(CFG_TCL_UNSHARED_LIB_SUFFIX)
AC_SUBST(CFG_TCL_EXPORT_FILE_SUFFIX)

AC_SUBST(TCL_SHARED_BUILD)
AC_SUBST(LD_LIBRARY_PATH_VAR)

AC_SUBST(TCL_BUILD_LIB_SPEC)
AC_SUBST(TCL_NEEDS_EXP_FILE)
AC_SUBST(TCL_BUILD_EXP_FILE)
AC_SUBST(TCL_EXP_FILE)

AC_SUBST(TCL_LIB_VERSIONS_OK)
AC_SUBST(TCL_SHARED_LIB_SUFFIX)
AC_SUBST(TCL_UNSHARED_LIB_SUFFIX)

AC_SUBST(TCL_HAS_LONGLONG)

AC_SUBST(BUILD_DLTEST)
AC_SUBST(TCL_PACKAGE_PATH)

AC_OUTPUT(Makefile dltest/Makefile tclConfig.sh)