From 0fb5175af83fe538df3734570988d2efb1544c74 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juhani=20Krekel=C3=A4?= <juhani@krekelä.fi>
Date: Sun, 18 Apr 2021 19:59:51 +0300
Subject: [PATCH] Get bc(1) to build

---
 .gitignore |  3 +++
 Makefile   | 27 +++++++++++++++++++++------
 2 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/.gitignore b/.gitignore
index edbbc9a..3b22bf9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,4 @@
 dc/dc
+bc/bc
+bc/y.tab.c
+bc/bc.c
diff --git a/Makefile b/Makefile
index d9f781b..f56e142 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+SED ?= sed
+
 DESTDIR ?=
 PREFIX ?= /usr/local
 EXEC_PREFIX ?= $(PREFIX)
@@ -5,9 +7,11 @@ BINDIR ?= $(EXEC_PREFIX)/bin
 LIBEXECDIR ?= $(EXEC_PREFIX)/libexec
 DATAROOTDIR ?= $(PREFIX)/share
 MANDIR ?= $(DATAROOTDIR)/man
+BCDATADIR ?= $(DATAROOTDIR)/bc
 
-BINS := dc/dc
-MAN1S := dc/dc.1
+BINS := dc/dc bc/bc
+MAN1S := dc/dc.1 bc/bc.1
+BCDATAS := bc/lib.b
 
 .SUFFIXES:
 .SUFFIXES: .c .o
@@ -19,18 +23,29 @@ all: $(BINS)
 dc/dc: dc/dc.c dc/dc.h
 	$(CC) -o $@ $(CFLAGS) $(CPPFLAGS) $< $(LDFLAGS)
 
+bc/bc: bc/bc.c
+	$(CC) -o $@ $(CFLAGS) $(CPPFLAGS) -DDC='"$(BINDIR)/dc"' -DLIBB='"$(BCDATADIR)/lib.b"' $< $(LDFLAGS)
+
+bc/bc.c: bc/y.tab.c bc/yyval.sed
+	$(SED) -f bc/yyval.sed $< > $@
+
+bc/y.tab.c: bc/bc.y
+	cd bc && yacc bc.y
+
 .c.o:
 	$(CC) -c $(CFLAGS) $(CPPFLAGS) -o $@ $<
 
-install: $(BINS) $(MAN1S)
+install: $(BINS) $(MAN1S) $(BCDATAS)
 	install -D -m 755 -t '$(DESTDIR)$(BINDIR)' $(BINS)
 	install -D -m 644 -t '$(DESTDIR)$(MANDIR)/man1' $(MAN1S)
+	install -D -m 644 -t '$(DESTDIR)$(BCDATADIR)' $(BCDATAS)
 
 uninstall:
-	cd $(DESTDIR)$(BINDIR) && rm $(BINS)
-	cd $(DESTDIR)$(MANDIR)/man1 && rm $(MAN1S)
+	cd '$(DESTDIR)$(BINDIR)' && rm $(BINS)
+	cd '$(DESTDIR)$(MANDIR)/man1' && rm $(MAN1S)
+	cd '$(DESTDIR)$(BCDATADIR)' && rm $(BCDATAS)
 
 clean:
-	rm -f $(BINS)
+	rm -f $(BINS) bc/y.tab.c bc/bc.c
 
 distclean: clean