Files
magic/plot/tclplot.c
T
Darryl L. MilesandClaude Opus 4.8 b3d6540f13 build: isolate build-info defines into utils/buildinfo.c (ccache-friendly)
MAGIC_VERSION / MAGIC_REVISION / MAGIC_COMMIT / MAGIC_BUILDDATE were on the
global DFLAGS, so every object's compile command line carried them.  Because
the command line is part of ccache/sccache's hash key and MAGIC_BUILDDATE
changes every second, that meant a cache miss on every unit on every build;
it also smeared the baked-in date/commit across "whenever each file last
recompiled".

Move the four values into a single translation unit:
  * utils/magic_buildinfo.h -- extern MagicVersion/MagicRevision/MagicCommit/
    MagicCompileTime (MagicCommit is new; the other three moved here from
    utils/magic.h, which now includes this header).
  * utils/buildinfo.c -- the ONLY unit compiled with the version defines
    (target-specific `buildinfo.o: DFLAGS += ${DFLAGS_MAGICVERSION}` in
    utils/Makefile.in); it defines the four globals.  ${DFLAGS_MAGICVERSION}
    is removed from the global DFLAGS/DFLAGS_NOSTUB.

Consumers updated to read the runtime symbol instead of the compile-time
macro:
  * magicTop.c / tclmagic.c no longer define the globals (the MAGIC_WRAPPER
    duplicate-symbol guard is gone -- buildinfo.o owns them for every variant,
    including WASM, which links both mains).
  * Tcl_PkgProvide/PkgRequire in router/ext2spice/lef/ext2sim/plot/tclmagic
    now pass MagicVersion.
  * extflat: EFVersion (a static-initialized copy of MAGIC_VERSION) is dropped;
    EFread.c compares the .ext version against MagicVersion directly -- the same
    value ExtCell.c already *writes* into .ext files, so read and write are now
    consistent.

Verified: only buildinfo.o carries -DMAGIC_* (hash/DBio/windCmdSZ carry none);
Tcl (375 files) and --without-tcl builds rc=0, version/commit/date embedded in
tclmagic.so, magicTop.o no longer defines MagicVersion; in-tree source clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
2026-07-26 14:54:11 -04:00

75 lines
1.9 KiB
C

/*--------------------------------------------------------------*/
/* tclplot.c */
/* */
/* Allows the "plot" feature to be loaded as a module */
/* under the Tcl/Tk version of magic. Loading is */
/* automatic upon invoking the "plot" command. */
/*--------------------------------------------------------------*/
#ifdef PLOT_AUTO
#include <stdio.h>
#include <string.h>
#include "tcltk/tclmagic.h"
#include "utils/magic.h"
#include "utils/geometry.h"
#include "tiles/tile.h"
#include "utils/hash.h"
#include "database/database.h"
#include "windows/windows.h"
#include "commands/commands.h"
#include "utils/tech.h"
#include "plot/plot.h"
#include "dbwind/dbwind.h"
/* External routines */
extern void CmdPlot();
/*
* ----------------------------------------------------------------------------
*
* Tcl package initialization function
*
* ----------------------------------------------------------------------------
*/
int
Tclplot_Init(interp)
Tcl_Interp *interp;
{
int n;
SectionID invplot;
/* Sanity checks! */
if (interp == NULL) return TCL_ERROR;
if (Tcl_PkgRequire(interp, "Tclmagic", MagicVersion, 0) == NULL)
return TCL_ERROR;
if (Tcl_InitStubs(interp, Tclmagic_InitStubsVersion, 0) == NULL) return TCL_ERROR;
TxPrintf("Auto-loading PLOT module\n");
TxFlushOut();
/* Replace the auto-load function with the ones defined in */
/* this package in the command functions list. */
if (WindReplaceCommand(DBWclientID, "plot", CmdPlot) < 0)
return TCL_ERROR;
/* Now we need to do TechAddClient and reload the tech file */
TechAddClient("plot", PlotTechInit, PlotTechLine, PlotTechFinal,
(SectionID) 0, (SectionID *) 0, FALSE);
/* No initialization function to go here */
invplot = TechSectionGetMask("plot", NULL);
if (!TechLoad(NULL, invplot)) return TCL_ERROR;
Tcl_PkgProvide(interp, "Plot", MagicVersion);
return TCL_OK;
}
#endif /* PLOT_AUTO */