[PATCH v2] Simplify the generation of man pages

Use `sed` to simplify the man pages generation. Keep the .in files
intact during make and generate the actual man pages with sed.
Additionally package tools already gz the man pages during install so it
doesn't really need to do that during make and it breaks reproducibility
of the package due to timestamps on files.

Motivation: https://reproducible-builds.org

Signed-off-by: Leonidas Spyropoulos <artafinde@archlinux.org>
Reviewed-and-tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>

.gitignore

@@ -78,3 +78,5 @@ GTAGS
 *~
 \#*#
 makedumpfile
+makedumpfile.8
+makedumpfile.conf.5

Makefile

@@ -112,26 +112,24 @@ $(OBJ_ARCH): $(SRC_ARCH)
 
 makedumpfile: $(SRC_BASE) $(OBJ_PART) $(OBJ_ARCH)
 	$(CC) $(CFLAGS) $(LDFLAGS) $(OBJ_PART) $(OBJ_ARCH) -rdynamic -o $@ $< $(LIBS)
-	echo .TH MAKEDUMPFILE 8 \"$(DATE)\" \"makedumpfile v$(VERSION)\" \"Linux System Administrator\'s Manual\" > temp.8
-	grep -v "^.TH MAKEDUMPFILE 8" $(VPATH)makedumpfile.8 >> temp.8
-	mv temp.8 makedumpfile.8
-	gzip -c ./makedumpfile.8 > ./makedumpfile.8.gz
-	echo .TH MAKEDUMPFILE.CONF 5 \"$(DATE)\" \"makedumpfile v$(VERSION)\" \"Linux System Administrator\'s Manual\" > temp.5
-	grep -v "^.TH MAKEDUMPFILE.CONF 5" $(VPATH)makedumpfile.conf.5 >> temp.5
-	mv temp.5 makedumpfile.conf.5
-	gzip -c ./makedumpfile.conf.5 > ./makedumpfile.conf.5.gz
+	@sed -e "s/@DATE@/$(DATE)/" \
+	     -e "s/@VERSION@/$(VERSION)/" \
+	     $(VPATH)makedumpfile.8.in > $(VPATH)makedumpfile.8
+	@sed -e "s/@DATE@/$(DATE)/" \
+	     -e "s/@VERSION@/$(VERSION)/" \
+	     $(VPATH)makedumpfile.conf.5.in > $(VPATH)makedumpfile.conf.5
 
 eppic_makedumpfile.so: extension_eppic.c
 	$(CC) $(CFLAGS) $(LDFLAGS) -shared -rdynamic -o $@ extension_eppic.c -fPIC -leppic -ltinfo
 
 clean:
-	rm -f $(OBJ) $(OBJ_PART) $(OBJ_ARCH) makedumpfile makedumpfile.8.gz makedumpfile.conf.5.gz
+	rm -f $(OBJ) $(OBJ_PART) $(OBJ_ARCH) makedumpfile makedumpfile.8 makedumpfile.conf.5
 
 install:
 	install -m 755 -d ${DESTDIR}/usr/sbin ${DESTDIR}/usr/share/man/man5 ${DESTDIR}/usr/share/man/man8 ${DESTDIR}/etc
 	install -m 755 -t ${DESTDIR}/usr/sbin makedumpfile $(VPATH)makedumpfile-R.pl
-	install -m 644 -t ${DESTDIR}/usr/share/man/man8 makedumpfile.8.gz
-	install -m 644 -t ${DESTDIR}/usr/share/man/man5 makedumpfile.conf.5.gz
+	install -m 644 -t ${DESTDIR}/usr/share/man/man8 makedumpfile.8
+	install -m 644 -t ${DESTDIR}/usr/share/man/man5 makedumpfile.conf.5
 	install -m 644 -D $(VPATH)makedumpfile.conf ${DESTDIR}/etc/makedumpfile.conf.sample
 	mkdir -p ${DESTDIR}/usr/share/makedumpfile-${VERSION}/eppic_scripts
 	install -m 644 -t ${DESTDIR}/usr/share/makedumpfile-${VERSION}/eppic_scripts/ $(VPATH)eppic_scripts/*

makedumpfile.8 → makedumpfile.8.in

@@ -1,4 +1,4 @@
-.TH MAKEDUMPFILE 8 "8 Nov 2021" "makedumpfile v1.7.0++" "Linux System Administrator's Manual"
+.TH MAKEDUMPFILE 8 "@DATE@" "makedumpfile v@VERSION@" "Linux System Administrator's Manual"
 .SH NAME
 makedumpfile \- make a small dumpfile of kdump
 .SH SYNOPSIS

makedumpfile.conf.5 → makedumpfile.conf.5.in

@@ -1,4 +1,4 @@
-.TH MAKEDUMPFILE.CONF 5 "8 Nov 2021" "makedumpfile v1.7.0++" "Linux System Administrator's Manual"
+.TH MAKEDUMPFILE.CONF 5 "@DATE@" "makedumpfile v@VERSION@" "Linux System Administrator's Manual"
 .SH NAME
 makedumpfile.conf \- The filter configuration file for makedumpfile(8).
 .SH DESCRIPTION