From 31e4c2917b05f10b5f9bd5ce429dbf42a8346b6d Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Sun, 2 Jul 2023 22:09:07 +0200
Subject: Make makefile portable
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Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 Makefile | 92 +++++++++++++++++++++++++++++++++-------------------------------
 1 file changed, 47 insertions(+), 45 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index cd71a99..93c0b1d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,17 +1,20 @@
-.NONPOSIX:
+.POSIX:
 
 CONFIGFILE = config.mk
 include $(CONFIGFILE)
 
 LIBEXECDIR = $(PREFIX)/$(LIBEXEC)
 
-BIN =\
+
+BIN_GENERIC =\
 	keccaksum\
+	sha3sum\
+
+BIN_SPECIFIC =\
 	keccak-224sum\
 	keccak-256sum\
 	keccak-384sum\
 	keccak-512sum\
-	sha3sum\
 	sha3-224sum\
 	sha3-256sum\
 	sha3-384sum\
@@ -23,48 +26,38 @@ BIN =\
 	shake256sum\
 	shake512sum
 
+BIN = $(BIN_GENERIC) $(BIN_SPECIFIC)
 MAN1 = $(BIN:=.1)
 HDR = arg.h common.h
 
-keccaksum = Keccak[]
-keccak-224sum = Keccak-224
-keccak-256sum = Keccak-256
-keccak-384sum = Keccak-384
-keccak-512sum = Keccak-512
-sha3sum = SHA3
-sha3-224sum = SHA3-224
-sha3-256sum = SHA3-256
-sha3-384sum = SHA3-384
-sha3-512sum = SHA3-512
-rawshake128sum = RawSHAKE128
-rawshake256sum = RawSHAKE256
-rawshake512sum = RawSHAKE512
-shake128sum = SHAKE128
-shake256sum = SHAKE256
-shake512sum = SHAKE512
-
 
 all: $(BIN) $(MAN1)
 mcb: sha3sum-mcb $(MAN1)
 
-sha3sum-mcb.c: commands.h
+sha3sum-mcb.o: commands.h
+$(BIN:=.o): $(HDR)
+$(BIN:=.bo): $(HDR)
+$(BIN): common.o
 
-%: %.o common.o
-	$(CC) -o $@ $< common.o $(LDFLAGS)
+.o:
+	$(CC) -o $@ $@.o common.o $(LDFLAGS)
 
-%.o: %.c $(HDR)
+.c.o:
 	$(CC) -c -o $@ $< $(CFLAGS) $(CPPFLAGS)
 
-%.bo: %.c $(HDR)
+.c.bo:
 	$(CC) -c -o $@ $< $(CFLAGS) $(CPPFLAGS) \
 	-Dmain="main_$$(printf '%s\n' $* | tr - _)(int, char *[]); int main_$$(printf '%s\n' $* | tr - _)"
 
-%.1: xsum.man
-	u=$$(printf '%s\n' $* | tr a-z A-Z); \
-	if test $* = sha3sum; then \
-		sed -e 's/xsum/$*/g' -e 's/XSUM/'"$$u"'/g' -e 's/Xsum/$($*)/g' -e 's/^\\# ONLY SHA3: //' < xsum.man > $@; \
+$(MAN1): xsum.man algorithm-map
+	set -e; \
+	f="$$(printf '%s\n' "$@" | sed 's/\.1$$//')"; \
+	u="$$(printf '%s\n' "$$f" | tr a-z A-Z)"; \
+	a="$$(sed -n 's/^'"$$f"'\s*=\s*//p' < algorithm-map | sed 's/\s*$$//')"; \
+	if test "$$f" = sha3sum; then \
+		sed -e "s/xsum/$$f/g" -e "s/XSUM/$$u/g" -e "s/Xsum/$$a/g" -e 's/^\\# ONLY SHA3: //' < xsum.man > $@; \
 	else \
-		sed -e 's/xsum/$*/g' -e 's/XSUM/'"$$u"'/g' -e 's/Xsum/$($*)/g' -e '/^\\# ONLY SHA3: /d' < xsum.man > $@; \
+		sed -e "s/xsum/$$f/g" -e "s/XSUM/$$u/g" -e "s/Xsum/$$a/g" -e '/^\\# ONLY SHA3: /d' < xsum.man > $@; \
 	fi
 
 commands.h: Makefile
@@ -74,18 +67,6 @@ commands.h: Makefile
 sha3sum-mcb: sha3sum-mcb.o common.o $(BIN:=.bo)
 	$(CC) -o $@ sha3sum-mcb.o common.o $(BIN:=.bo) $(LDFLAGS)
 
-keccak-%sum.c:
-	printf '%s\n' '#include "common.h"' 'KECCAK_MAIN($*)' > $@
-
-sha3-%sum.c:
-	printf '%s\n' '#include "common.h"' 'SHA3_MAIN($*)' > $@
-
-rawshake%sum.c:
-	printf '%s\n' '#include "common.h"' 'RAWSHAKE_MAIN($*)' > $@
-
-shake%sum.c:
-	printf '%s\n' '#include "common.h"' 'SHAKE_MAIN($*)' > $@
-
 check: $(BIN)
 	./test
 
@@ -103,7 +84,7 @@ install-mcb: sha3sum-mcb $(MAN1)
 	mkdir -p -- "$(DESTDIR)$(MANPREFIX)/man1"
 	mkdir -p -- "$(DESTDIR)$(PREFIX)/share/licenses/sha3sum"
 	set -e && cd "$(DESTDIR)$(PREFIX)/bin/" && \
-	for f in $(BIN); do ln -sf -- ../$(LIBEXEC)/sha3sum "$$f"; done
+	for f in $(BIN); do ln -sf -- ../$(LIBEXEC)/sha3sum "$$f" || exit 1; done
 	cp -- sha3sum-mcb "$(DESTDIR)$(LIBEXECDIR)/sha3sum"
 	cp -- $(MAN1) "$(DESTDIR)$(MANPREFIX)/man1/"
 	cp -- LICENSE "$(DESTDIR)$(PREFIX)/share/licenses/sha3sum/"
@@ -115,8 +96,29 @@ uninstall:
 	-rm -f -- "$(DESTDIR)$(LIBEXECDIR)/sha3sum"
 
 clean:
-	-rm -rf -- $(MAN1) $(BIN) sha3sum-mcb *.o *.bo *.su commands.h keccak-*sum.c sha3-*sum.c rawshake*sum.c shake*sum.c .testdir
+	-rm -rf -- $(MAN1) $(BIN) sha3sum-mcb *.o *.bo *.su commands.h .testdir
+	-rm -rf -- keccak-*sum.c sha3-*sum.c rawshake*sum.c shake*sum.c
+
+$(BIN_SPECIFIC:=.c):
+	+@set -e; \
+		f="$$(\
+			set -e; \
+			sed -n 's/^\([a-z0-9-]\+\)%\([^:]*\):.*$$/\1 \2/p' < unportable.mk | while read start end; do \
+				end="$$(printf '%s\n' "$$end" | sed 's/\./\\\./g')"; \
+				x="$$(printf '%s\n' '$@' | sed -n 's/^'"$$start"'\(.*\)'"$$end"'$$/\1/p')"; \
+				if test -n "$$x"; then \
+					printf '%s\n' "$$x"; \
+					break; \
+				fi; \
+			done; \
+		)"; \
+		if test -z "$$f"; then \
+			printf 'No rule to make target %s\n' "$@" >&2; \
+			exit 1; \
+		fi; \
+		sed "/^[a-z]/s/%/$$f/g" < unportable.mk | sed 's/\$$\*/'"$$f/g" | $(MAKE) -f - "$@"
 
 .SUFFIXES:
+.SUFFIXES: .c .o .bo
 
-.PHONY: all check install uninstall clean
+.PHONY: all mcb check install install-mcb uninstall clean
-- 
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