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Overview
Comment:fix for [Bug 3281728]: Tcl sources from 2011-04-06 do not build on GCC9 (RH9)
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SHA1: e0421a23a8b45c67fb3015add23ac98f4acfcce3
User & Date: jan.nijtmans 2011-04-11 07:31:18
Context
2011-04-11
10:37
insure that 'coroutine eval' runs the initial command in the proper context, [Bug 3282869] check-in: 15f9fcba6e user: mig tags: trunk
07:31
fix for [Bug 3281728]: Tcl sources from 2011-04-06 do not build on GCC9 (RH9) check-in: e0421a23a8 user: jan.nijtmans tags: trunk
2011-04-09
09:40
oops, accidently checked in check-in: d550d19c7c user: jan tags: trunk
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Changes to ChangeLog. 






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2011-04-08  Jan Nijtmans  <[email protected]>

	* win/tclWinPort.h: fix for [Bug 3280043]: win2k: unresolved DLL imports
	* win/configure.in
	* win/configure

2011-04-06  Miguel Sofer  <[email protected]>

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2011-04-11  Jan Nijtmans  <[email protected]>
	* generic/tcl.h:    fix for [Bug 3281728]: Tcl sources from 2011-04-06 do
	* unix/tcl.m4:      not build on GCC9 (RH9)
	* unix/configure:

2011-04-08  Jan Nijtmans  <[email protected]>

	* win/tclWinPort.h: fix for [Bug 3280043]: win2k: unresolved DLL imports
	* win/configure.in
	* win/configure

2011-04-06  Miguel Sofer  <[email protected]>
︙︙

Changes to generic/tcl.h.

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#   else
#       define DLLIMPORT __declspec(dllimport)
#       define DLLEXPORT __declspec(dllexport)
#       define CRTIMPORT __declspec(dllimport)
#   endif
#else
#   define DLLIMPORT
#   if defined(__GNUC__) && !defined(NO_VIZ) && !defined(STATIC_BUILD)
#       define DLLEXPORT __attribute__ ((visibility("default")))
#   else
#       define DLLEXPORT
#   endif
#   define CRTIMPORT
#endif









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#   else
#       define DLLIMPORT __declspec(dllimport)
#       define DLLEXPORT __declspec(dllexport)
#       define CRTIMPORT __declspec(dllimport)
#   endif
#else
#   define DLLIMPORT
#   if defined(__GNUC__) && __GNUC__ > 3
#       define DLLEXPORT __attribute__ ((visibility("default")))
#   else
#       define DLLEXPORT
#   endif
#   define CRTIMPORT
#endif
︙︙

Changes to unix/configure.

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    echo "$as_me:$LINENO: checking if compiler supports visibility \"hidden\"" >&5
echo $ECHO_N "checking if compiler supports visibility \"hidden\"... $ECHO_C" >&6
if test "${tcl_cv_cc_visibility_hidden+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else

	    if test "$GCC" = yes -a "$SHARED_BUILD" = 1; then

		hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fvisibility=hidden -Werror"
		cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */

int
main ()
{




  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5








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    echo "$as_me:$LINENO: checking if compiler supports visibility \"hidden\"" >&5
echo $ECHO_N "checking if compiler supports visibility \"hidden\"... $ECHO_C" >&6
if test "${tcl_cv_cc_visibility_hidden+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else

	    if test "$SHARED_BUILD" = 1; then

		hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fvisibility=hidden -Werror"
		cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */

int
main ()
{
#if !defined(__GNUC__) || __GNUC__ < 4
#error visibility hidden is not supported for this compiler
#endif

  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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Changes to unix/tcl.m4.

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    AS_IF([test "$do64bitVIS" = "yes"], [do64bit=yes])

    # Step 0.c: Check if visibility support is available. Do this here so
    # that platform specific alternatives can be used below if this fails.

    AC_CACHE_CHECK([if compiler supports visibility "hidden"],
	tcl_cv_cc_visibility_hidden, [
	    AS_IF([test "$GCC" = yes -a "$SHARED_BUILD" = 1], [
		hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fvisibility=hidden -Werror"



		AC_TRY_COMPILE(,, tcl_cv_cc_visibility_hidden=yes,
		    tcl_cv_cc_visibility_hidden=no)
		CFLAGS=$hold_cflags
	    ], [
		tcl_cv_cc_visibility_hidden=no
	    ])
    ])
    AS_IF([test $tcl_cv_cc_visibility_hidden = yes], [








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    AS_IF([test "$do64bitVIS" = "yes"], [do64bit=yes])

    # Step 0.c: Check if visibility support is available. Do this here so
    # that platform specific alternatives can be used below if this fails.

    AC_CACHE_CHECK([if compiler supports visibility "hidden"],
	tcl_cv_cc_visibility_hidden, [
	    AS_IF([test "$SHARED_BUILD" = 1], [
		hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fvisibility=hidden -Werror"
		AC_TRY_COMPILE(,[#if !defined(__GNUC__) || __GNUC__ < 4
#error visibility hidden is not supported for this compiler
#endif
		], tcl_cv_cc_visibility_hidden=yes,
		    tcl_cv_cc_visibility_hidden=no)
		CFLAGS=$hold_cflags
	    ], [
		tcl_cv_cc_visibility_hidden=no
	    ])
    ])
    AS_IF([test $tcl_cv_cc_visibility_hidden = yes], [
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