build: standard-module Makefile.in use @srcdir@ substitution

Switch the 21 standard modules from the defs.mak srcdir derivation to
configure-provided substitution (same template as tiles):
  srcdir   = @srcdir@
  VPATH    = @srcdir@
  MAGICDIR = @top_builddir@
defs.mak's dual-mode guard sees `srcdir` already set (origin=file) and
skips the srcdir derivation for these modules.

Verified out-of-tree: config.status writes srcdir=<src>/<mod> into each
build/<mod>/Makefile; `make modules libs` builds all 33 module libraries
(lib*.o + lib*.a, rc=0).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

bplane/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = bplane
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS	  = bpDump.c bpUtils.c bpBins.c bpEnum.c bpMain.c bpStat.c
 
 include ${MAGICDIR}/defs.mak

calma/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE =    calma
-MAGICDIR =  ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS =      CalmaRead.c CalmaRdcl.c CalmaRdio.c CalmaRdpt.c CalmaWrite.c CalmaWriteZ.c
 
 include ${MAGICDIR}/defs.mak

cif/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE   =  cif
-MAGICDIR =  ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS     =  CIFgen.c CIFhier.c CIFmain.c CIFrdcl.c CIFrdpt.c CIFrdpoly.c \
             CIFrdtech.c CIFrdutils.c CIFsee.c CIFtech.c CIFwrite.c
 

cmwind/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE   =  cmwind
-MAGICDIR =  ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS     =  CMWmain.c CMWcmmnds.c CMWundo.c CMWrgbhsv.c
 
 include ${MAGICDIR}/defs.mak

dbwind/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = dbwind
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = DBWcommands.c DBWdisplay.c DBWbuttons.c DBWelement.c \
 	    DBWfdback.c DBWhlights.c DBWprocs.c DBWtools.c DBWundo.c
 

debug/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = debug
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = debugFlags.c hist.c
 
 include ${MAGICDIR}/defs.mak

drc/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = drc
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = DRCarray.c DRCbasic.c DRCcif.c DRCcontin.c DRCmain.c \
 	    DRCsubcell.c DRCtech.c DRCprint.c DRCextend.c
 

extflat/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = extflat
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = EFargs.c EFbuild.c EFdef.c EFerr.c EFflat.c EFhier.c EFname.c \
             EFread.c EFsym.c EFvisit.c EFantenna.c
 

extract/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = extract
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = ExtArray.c ExtBasic.c ExtCell.c ExtCouple.c ExtHard.c \
             ExtHier.c ExtLength.c ExtMain.c ExtNghbors.c ExtPerim.c \
             ExtRegion.c ExtSubtree.c ExtTech.c ExtTest.c ExtTimes.c ExtYank.c \

garouter/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = garouter
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = gaChannel.c gaMain.c gaMaze.c gaSimple.c gaStem.c \
             gaTest.c
 

gcr/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = gcr
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = gcrChannel.c gcrColl.c gcrDebug.c gcrEdge.c gcrFeas.c \
             gcrFlags.c gcrInit.c gcrLib.c gcrRiver.c gcrRoute.c gcrShwFlgs.c \
             gcrUnsplit.c

grouter/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = grouter
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = grouteChan.c grouteCrss.c grouteDens.c grouteMain.c \
             grouteMult.c grouteMaze.c groutePath.c groutePen.c grouteTest.c
 

irouter/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = irouter
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = irCommand.c irMain.c irRoute.c irTestCmd.c irUtils.c
 
 include ${MAGICDIR}/defs.mak

mzrouter/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = mzrouter
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = mzBlock.c mzDebug.c mzEstimate.c mzXtndDown.c \
             mzXtndLeft.c mzXtndRght.c mzXtndUp.c mzHint.c mzInit.c mzNumLine.c \
             mzMain.c mzSearch.c mzStart.c mzSubrs.c mzTech.c mzTestCmd.c \

netmenu/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = netmenu
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = NMbutton.c NMcmdAK.c NMcmdLZ.c NMlabel.c NMmain.c \
             NMnetlist.c NMshowpt.c NMshowcell.c NMundo.c NMwiring.c
 

plow/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = plow
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = PlowCmd.c PlowJogs.c PlowMain.c PlowQueue.c PlowRandom.c \
             PlowRules1.c PlowRules2.c PlowRules3.c PlowSearch.c PlowTech.c \
             PlowTest.c PlowWidth.c PlowYank.c

resis/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = resis
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = ResMain.c ResJunct.c ResMakeRes.c ResSimple.c ResPrint.c \
             ResReadExt.c ResRex.c ResBasic.c ResMerge.c ResChecks.c \
             ResFract.c ResUtils.c ResDebug.c

select/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = select
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = selCreate.c selDisplay.c selEnum.c selOps.c selUndo.c \
             selUnselect.c
 

sim/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = sim
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = SimDBstuff.c SimSelect.c SimRsim.c SimExtract.c
 
 include ${MAGICDIR}/defs.mak

textio/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = textio
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = txCommands.c txInput.c txMain.c txMore.c txOutput.c
 
 include ${MAGICDIR}/defs.mak

wiring/Makefile.in

@@ -3,7 +3,11 @@
 #
 
 MODULE    = wiring
-MAGICDIR  = ..
+# Provided by configure: the module's source dir + the build top.
+# defs.mak sees `srcdir` already set and skips its own srcdir derivation.
+srcdir    = @srcdir@
+VPATH     = @srcdir@
+MAGICDIR  = @top_builddir@
 SRCS      = wireOps.c wireTech.c wireUndo.c
 
 include ${MAGICDIR}/defs.mak