restructure makefiles, scripts to factor out O= logic.

remove a few hardcoded paths elsewhere too.

R=r,gri
DELTA=123  (44 added, 15 deleted, 64 changed)
OCL=29914
CL=29945

doc/progs/run

@@ -3,7 +3,14 @@
 # Use of this source code is governed by a BSD-style
 # license that can be found in the LICENSE file.
 
-rm -f *.6
+. $GOROOT/src/Make.$GOARCH
+
+if [ -z "$O" ]; then
+	echo 'missing $O - maybe no Make.$GOARCH?' 1>&2
+	exit 1
+fi
+
+rm -f *.$O
 
 for i in \
 	file.go \
@@ -23,12 +30,12 @@ for i in \
 ; do
 	BASE=$(basename $i .go)
 
-	6g $i
+	$GC $i
 done
 
 function testit {
-	6l $1.6
-	x=$(echo $(./6.out $2 2>&1))  # extra echo canonicalizes
+	$LD $1.$O
+	x=$(echo $(./$O.out $2 2>&1))  # extra echo canonicalizes
 	if [ "$x" != "$3" ]
 	then
 		echo $1 failed: '"'$x'"' is not '"'$3'"'
@@ -36,8 +43,8 @@ function testit {
 }
 
 function testitpipe {
-	6l $1.6
-	x=$(echo $(./6.out | $2 2>&1))  # extra echo canonicalizes
+	$LD $1.$O
+	x=$(echo $(./$O.out | $2 2>&1))  # extra echo canonicalizes
 	if [ "$x" != "$3" ]
 	then
 		echo $1 failed: '"'$x'"' is not '"'$3'"'
@@ -65,7 +72,7 @@ testitpipe sieve "sed 10q" "2 3 5 7 11 13 17 19 23 29"
 testitpipe sieve "sed 10q" "2 3 5 7 11 13 17 19 23 29"
 
 # server hangs; don't run it, just compile it
-6g server.go
+$GC server.go
 testit server1 "" ""
 
-rm -f 6.out *.6
+rm -f $O.out *.$O

src/Make.386

@@ -0,0 +1,9 @@
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+O=8
+AS=${O}a
+CC=${O}c
+GC=${O}g
+LD=${O}l

src/Make.amd64

@@ -0,0 +1,9 @@
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+O=6
+AS=${O}a
+CC=${O}c
+GC=${O}g
+LD=${O}l

src/Make.arm

@@ -0,0 +1,9 @@
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+O=5
+AS=${O}a
+CC=${O}c
+GC=${O}g
+LD=${O}l

src/cmd/gc/mkbuiltin

@@ -4,11 +4,18 @@
 # license that can be found in the LICENSE file.
 
 set -e
+
+. $GOROOT/src/Make.$GOARCH
+if [ -z "$GC" ]; then
+	echo 'missing $GC - maybe no Make.$GOARCH?' 1>&2
+	exit 1
+fi
+
 gcc -o mkbuiltin1 mkbuiltin1.c
 rm -f _builtin.c
 for i in sys unsafe
 do
-	6g $i.go
+	$GC $i.go
 	./mkbuiltin1 $i >>_builtin.c
 done
 

src/cmd/gotest/gotest

@@ -8,18 +8,20 @@
 # tests.
 # If files are named on the command line, use them instead of test*.go.
 
-case "$GOARCH" in
-amd64)	O=6;;
-arm)	O=5;;
-386)	O=8;;
-*)	echo 'unknown $GOARCH' 1>&2
-esac
+_GC=$GC	# Make.$GOARCH will overwrite this
 
-GC=${GC:-${O}g}
-GL=${GL:-${O}l}
-export GC GL
+. $GOROOT/src/Make.$GOARCH
+if [ -z "$O" ]; then
+	echo 'missing $O - maybe no Make.$GOARCH?' 1>&2
+	exit 1
+fi
+
+# Allow overrides
+GC=${_GC:-$GC}
+GL=${GL:-$LD}
 GC="$GC -I _obj"
 GL="$GL -L _obj"
+export GC GL
 
 gofiles=""
 loop=true

src/cmd/ld/go.c

@@ -100,12 +100,12 @@ ldpkg(Biobuf *f, int64 len, char *filename)
 		return;
 
 	if((int)len != len) {
-		fprint(2, "6l: too much pkg data in %s\n", filename);
+		fprint(2, "%s: too much pkg data in %s\n", argv0, filename);
 		return;
 	}
 	data = mal(len+1);
 	if(Bread(f, data, len) != len) {
-		fprint(2, "6l: short pkg read %s\n", filename);
+		fprint(2, "%s: short pkg read %s\n", argv0, filename);
 		return;
 	}
 	data[len] = '\0';
@@ -121,13 +121,13 @@ ldpkg(Biobuf *f, int64 len, char *filename)
 	// second marks end of exports / beginning of local data
 	p1 = strstr(p0, "\n$$");
 	if(p1 == nil) {
-		fprint(2, "6l: cannot find end of exports in %s\n", filename);
+		fprint(2, "%s: cannot find end of exports in %s\n", argv0, filename);
 		return;
 	}
 	while(*p0 == ' ' || *p0 == '\t' || *p0 == '\n')
 		p0++;
 	if(strncmp(p0, "package ", 8) != 0) {
-		fprint(2, "6l: bad package section in %s\n", filename);
+		fprint(2, "%s: bad package section in %s\n", argv0, filename);
 		return;
 	}
 	p0 += 8;
@@ -147,7 +147,7 @@ ldpkg(Biobuf *f, int64 len, char *filename)
 	// local types end at next \n$$.
 	p1 = strstr(p0, "\n$$");
 	if(p1 == nil) {
-		fprint(2, "6l: cannot find end of local types in %s\n", filename);
+		fprint(2, "%s: cannot find end of local types in %s\n", argv0, filename);
 		return;
 	}
 
@@ -173,13 +173,13 @@ loadpkgdata(char *file, char *data, int len)
 			x->export = export;
 		} else {
 			if(strcmp(x->prefix, prefix) != 0) {
-				fprint(2, "6l: conflicting definitions for %s\n", name);
+				fprint(2, "%s: conflicting definitions for %s\n", argv0, name);
 				fprint(2, "%s:\t%s %s ...\n", x->file, x->prefix, name);
 				fprint(2, "%s:\t%s %s ...\n", file, prefix, name);
 				nerrors++;
 			}
 			else if(strcmp(x->def, def) != 0) {
-				fprint(2, "6l: conflicting definitions for %s\n", name);
+				fprint(2, "%s: conflicting definitions for %s\n", argv0, name);
 				fprint(2, "%s:\t%s %s %s\n", x->file, x->prefix, name, x->def);
 				fprint(2, "%s:\t%s %s %s\n", file, prefix, name, def);
 				nerrors++;
@@ -232,7 +232,7 @@ parsepkgdata(char *file, char **pp, char *ep, int *exportp, char **prefixp, char
 	else if(strncmp(p, "const ", 6) == 0)
 		p += 6;
 	else{
-		fprint(2, "6l: confused in pkg data near <<%.20s>>\n", p);
+		fprint(2, "%s: confused in pkg data near <<%.20s>>\n", argv0, p);
 		nerrors++;
 		return -1;
 	}
@@ -265,7 +265,7 @@ parsepkgdata(char *file, char **pp, char *ep, int *exportp, char **prefixp, char
 			// indented we could do something more complicated,
 			// but for now just diagnose the problem and assume
 			// 6g will keep indenting for us.
-			fprint(2, "6l: %s: expected methods to be indented %p %p %.10s\n",
+			fprint(2, "%s: %s: expected methods to be indented %p %p %.10s\n", argv0,
 				file, edef, meth, meth);
 			nerrors++;
 			return -1;
@@ -305,7 +305,7 @@ parsemethod(char **pp, char *ep, char **methp)
 	while(p < ep && *p != '\n')
 		p++;
 	if(p >= ep) {
-		fprint(2, "6l: lost end of line in method definition\n");
+		fprint(2, "%s: lost end of line in method definition\n", argv0);
 		*pp = ep;
 		return -1;
 	}

src/cmd/make.bash

@@ -7,14 +7,11 @@ set -e
 
 bash clean.bash
 
-case "$GOARCH" in
-386)	O=8;;
-amd64)	O=6;;
-arm)	O=5;;
-*)
-	echo 'unknown $GOARCH' 1>&2
+. $GOROOT/src/Make.$GOARCH
+if [ -z "$O" ]; then
+	echo 'missing $O - maybe no Make.$GOARCH?' 1>&2
 	exit 1
-esac
+fi
 
 cd ${O}l
 bash mkenam

src/lib/Makefile

@@ -11,8 +11,6 @@
 
 all: install
 
-GC=6g
-
 DIRS=\
 	bignum\
 	bufio\

usr/gri/pretty/Makefile

@@ -2,19 +2,18 @@
 # Use of this source code is governed by a BSD-style
 # license that can be found in the LICENSE file.
 
-G=6g
-L=6l
+include $(GOROOT)/src/Make.$(GOARCH)
 
 all: untab godoc pretty
 
-untab: untab.6
-	$(L) -o untab untab.6
+untab: untab.$O
+	$(LD) -o untab untab.$O
 
-godoc: godoc.6
-	$(L) -o godoc godoc.6
+godoc: godoc.$O
+	$(LD) -o godoc godoc.$O
 
-pretty: pretty.6
-	$(L) -o pretty pretty.6
+pretty: pretty.$O
+	$(LD) -o pretty pretty.$O
 
 test: pretty
 	./test.sh
@@ -28,11 +27,11 @@ install: pretty godoc untab
 	cp untab $(HOME)/bin/untab
 
 clean:
-	rm -f pretty untab godoc *.6 *.a 6.out *~
+	rm -f pretty untab godoc *.$O *.a 6.out *~
 
-godoc.6:	astprinter.6
+godoc.$O:	astprinter.$O
 
-pretty.6:	 astprinter.6
+pretty.$O:	 astprinter.$O
 
-%.6:	%.go
-	$(G) $(F) $<
+%.$O:	%.go
+	$(GC) $(F) $<

usr/gri/pretty/test.sh

@@ -4,6 +4,12 @@
 
 #!/bin/bash
 
+. $GOROOT/src/Make.$GOARCH
+if [ -z "$O" ]; then
+	echo 'missing $O - maybe no Make.$GOARCH?' 1>&2
+	exit 1
+fi
+
 CMD="./pretty -format=ast.txt"
 TMP1=test_tmp1.go
 TMP2=test_tmp2.go
@@ -73,7 +79,7 @@ idempotent() {
 		echo "Error (step 1 of idempotency test): test.sh $1"
 		exit 1
 	fi
-	
+
 	$CMD $TMP1 > $TMP2
 	if [ $? != 0 ]; then
 		echo "Error (step 2 of idempotency test): test.sh $1"
@@ -103,7 +109,7 @@ valid() {
 		exit 1
 	fi
 
-	6g -o /dev/null $TMP1
+	$GC -o /dev/null $TMP1
 	if [ $? != 0 ]; then
 		echo "Error (step 2 of validity test): test.sh $1"
 		exit 1
@@ -125,7 +131,7 @@ runtest() {
 runtests() {
 	if [ $# == 0 ]; then
 		runtest apply
-		# verify the pretty-printed files can be compiled with 6g again
+		# verify the pretty-printed files can be compiled with $GC again
 		# do it in local directory only because of the prerequisites required
 		#echo "Testing validity"
 		cleanup