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https://issues.apache.org/jira/browse/TS-3?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12772576#action_12772576
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Dossy Shiobara commented on TS-3:
---------------------------------

You might care if you're trying to build TS using a Tcl other than the system 
installed one.

Sourcing or even grep/awk'ing tclConfig.sh is fine, but define an AC arg for 
--with-tcl to override the path and filename to the tclConfig.sh, defaulting to 
/usr/lib/tclConfig.sh if not specified.

> Finding TCL library
> -------------------
>
>                 Key: TS-3
>                 URL: https://issues.apache.org/jira/browse/TS-3
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: Build
>            Reporter: Leif Hedstrom
>            Assignee: Leif Hedstrom
>            Priority: Minor
>
> And make the checks have some teeth. tcl.h is in /usr/lib/tclx.y on Ubuntu at 
> least. This assumed TCL >= 8.4, but that's ancient already.
> Index: configure.ac
> ===================================================================
> --- configure.ac        (revision 831451)
> +++ configure.ac        (working copy)
> @@ -376,8 +376,13 @@
>  # 
> -----------------------------------------------------------------------------
>  # 5. CHECK FOR HEADER FILES
>  
> -AC_CHECK_HEADER([execinfo.h],[],[])
> +AC_CHECK_HEADER([execinfo.h],[],[AC_MSG_FAILURE(Cannot find execinfo.h)])
>  
> +SC_PATH_TCLCONFIG
> +source $TCL_BIN_DIR/tclConfig.sh
> +CPPFLAGS="$CPPFLAGS $TCL_INCLUDE_SPEC"
> +AC_CHECK_HEADER([tcl.h],[],[AC_MSG_FAILURE(Cannot find tcl.h)])
> +
>  #
>  # use modular IOCORE 
>  #
> --
> Stephane Belmon

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