Automatic rules rulez! (for things like .o files)

- This update also allowed to have a somewhat cleaner
	  support for building libraries. (because the code to generate
	  the rules for the .o files is common, uh)
	- Such automatic rules are hidden from the Makefiles’ “help”
	  message, as they previously were.
	- subdirs are expected to have been broken.

I should really write a real tool to do this job. In, say, C, maybe?

Makefile

@@ -19,7 +19,7 @@ build.zsh:
 
 build.zsh.install: build.zsh
 	@echo '  [IN]    $(BINDIR)/build.zsh'
-	$(Q)mkdir -p '$(DESTDIR)$(BINDIR)/build.zsh'
+	$(Q)mkdir -p '$(DESTDIR)$(BINDIR)'
 	$(Q)install -m0755 build.zsh $(DESTDIR)$(BINDIR)/build.zsh
 
 build.zsh.clean:
@@ -74,6 +74,8 @@ $(PACKAGE)-$(VERSION).tar.gz: distdir
 	@echo '  [TAR]   $(PACKAGE)-$(VERSION).tar.gz'
 	$(Q)tar czf $(PACKAGE)-$(VERSION).tar.gz \
 		$(PACKAGE)-$(VERSION)/build/binary.zsh \
+		$(PACKAGE)-$(VERSION)/build/library.zsh \
+		$(PACKAGE)-$(VERSION)/build/ofile.zsh \
 		$(PACKAGE)-$(VERSION)/build/script.zsh \
 		$(PACKAGE)-$(VERSION)/project.zsh \
 		$(PACKAGE)-$(VERSION)/Makefile
@@ -83,6 +85,8 @@ $(PACKAGE)-$(VERSION).tar.xz: distdir
 	@echo '  [TAR]   $(PACKAGE)-$(VERSION).tar.xz'
 	$(Q)tar cJf $(PACKAGE)-$(VERSION).tar.xz \
 		$(PACKAGE)-$(VERSION)/build/binary.zsh \
+		$(PACKAGE)-$(VERSION)/build/library.zsh \
+		$(PACKAGE)-$(VERSION)/build/ofile.zsh \
 		$(PACKAGE)-$(VERSION)/build/script.zsh \
 		$(PACKAGE)-$(VERSION)/project.zsh \
 		$(PACKAGE)-$(VERSION)/Makefile
@@ -92,6 +96,8 @@ $(PACKAGE)-$(VERSION).tar.bz2: distdir
 	@echo '  [TAR]   $(PACKAGE)-$(VERSION).tar.bz2'
 	$(Q)tar cjf $(PACKAGE)-$(VERSION).tar.bz2 \
 		$(PACKAGE)-$(VERSION)/build/binary.zsh \
+		$(PACKAGE)-$(VERSION)/build/library.zsh \
+		$(PACKAGE)-$(VERSION)/build/ofile.zsh \
 		$(PACKAGE)-$(VERSION)/build/script.zsh \
 		$(PACKAGE)-$(VERSION)/project.zsh \
 		$(PACKAGE)-$(VERSION)/Makefile

build.zsh

@@ -7,6 +7,7 @@
 #	  it were cleaner, more readable and somewhat more documented.
 #	- Using subdirs creates trouble. Really. Don’t do it unless it’s for
 #	  completely separate, independent sub-projects.
+#	  Also, they’re unmaintained and probably broken by now.
 #
 # WARNINGS and LIMITATIONS:
 # 	- Using a relative path in DESTDIR= *will* fail.
@@ -162,7 +163,7 @@ done
 
 function main {
 	typeset -a prefixes directories
-	typeset -A ldflags cflags sources type depends install
+	typeset -A ldflags cflags sources type depends install auto
 
 	prefixes=(
 		PREFIX '/usr/local'
@@ -229,8 +230,10 @@ function main {
 		write "\n\t@:\n"
 	fi
 
-	for target in ${targets[@]}; do
+	local target_index=1
-		(
+	while (($target_index <= ${#targets[@]})); do
+		local target="${targets[$target_index]}"
+
 		typeset -a src
 		src=($(echo ${sources[$target]}))
 		local installdir="${install[$target]}"
@@ -279,7 +282,8 @@ function main {
 		if exists "${type[$target]}.test"; then
 			${type[$target]}.test
 		fi
-		)
+
+		((target_index++))
 	done
 
 	for dir in ${directories[@]}; do
@@ -428,7 +432,9 @@ function main {
 	write "	@echo ''"
 	write "	@echo '${fg_bold[white]}Project targets: ${reset_color}'"
 	for T in ${targets[@]}; do
+		if [[ "${auto[$T]}" != true ]]; then
 			printf "	@echo '    - ${fg_bold[yellow]}%-14s${fg[white]}${type[$T]}${reset_color}'\n" "$T" >> $Makefile
+		fi
 	done
 
 	write "	@echo ''"

build/binary.zsh

@@ -12,22 +12,10 @@ function binary.build {
 	write
 
 	for i in ${src[@]}; do
-		local dirname="$(dirname "$i")"
+		targets+=("${i%.c}.o")
-
+		type[${i%.c}.o]=ofile
-		write -n "${i%.c}.o: ${i}"
+		auto[${i%.c}.o]=true
-
+		cflags[${i%.c}.o]="${cflags[$target]}"
-		sed '/^#include "/!d;s/^#include "//;s/"$//' $i | while read h; do
-			h="$dirname/$h"
-
-			write -n " $h"
-		done
-		write
-
-		write "\t@echo '$(CC ${i%.c}.o)'"
-		write -n "\t$Q\$(CC) \$(CFLAGS) ${cflags[$target]} -c ${i} "
-		write -n " ${cflags[$target]}"
-		write " -o ${i%.c}.o"
-		write
 	done
 }
 
@@ -35,7 +23,7 @@ function binary.install {
 	local install="${install[$target]:-\$(BINDIR)}"
 	write "${target}.install: ${target}"
 	write "\t@echo '$(IN "${install}/${target}")'"
-	write "\t${Q}mkdir -p '\$(DESTDIR)${install}/${target}'"
+	write "\t${Q}mkdir -p '\$(DESTDIR)${install}'"
 	write "\t${Q}install -m0755 ${target} \$(DESTDIR)${install}/${target}"
 	write
 }
@@ -53,12 +41,5 @@ function binary.clean {
 	write "\t@echo '$(RM ${target})'"
 	write "\t${Q}rm -f ${target}"
 	write
-
-	for i in ${src[@]}; do
-		write "${i%.c}.o.clean:"
-		write "\t@echo '$(RM ${i%.c}.o)'"
-		write "\t${Q}rm -f ${i%.c}.o"
-		write
-	done
 }
 

build/library.zsh

@@ -0,0 +1,45 @@
+
+function library.build {
+	write -n "${target}:"
+	for i in ${src[@]}; do
+		write -n " ${i%.*}.o"
+	done
+	write " ${depends[$target]}"
+	write "\t@echo '$(LD ${target})'"
+	write -n "\t$Q\$(CC) -o ${target} -shared \$(LDFLAGS)"
+	write -n " ${src[@]//.c/.o}"
+	write " ${ldflags[$target]}"
+	write
+
+	for i in ${src[@]}; do
+		targets+=("${i%.c}.o")
+		type[${i%.c}.o]=ofile
+		auto[${i%.c}.o]=true
+		cflags[${i%.c}.o]="-fPIC ${cflags[$target]}"
+	done
+}
+
+function library.install {
+	local install="${install[$target]:-\$(LIBDIR)}"
+	write "${target}.install: ${target}"
+	write "\t@echo '$(IN "${install}/${target}")'"
+	write "\t${Q}mkdir -p '\$(DESTDIR)${install}'"
+	write "\t${Q}install -m0755 ${target} \$(DESTDIR)${install}/${target}"
+	write
+}
+
+function library.uninstall {
+	local install="${install[$target]:-\$(LIBDIR)}"
+	write "${target}.uninstall:"
+	write "\t@echo '$(RM ${install}/${target})'"
+	write "\t${Q}rm -f '\$(DESTDIR)${install}/${target}'"
+	write
+}
+
+function library.clean {
+	write "${target}.clean:"
+	write "\t@echo '$(RM ${target})'"
+	write "\t${Q}rm -f ${target}"
+	write
+}
+

build/ofile.zsh

@@ -0,0 +1,34 @@
+
+function ofile.build {
+	local dirname="$(dirname "$target")"
+	write -n "${target}: ${target%.o}.c"
+
+	sed '/^#include "/!d;s/^#include "//;s/"$//' "${target%.o}.c" | \
+	while read h; do
+		h="$dirname/$h"
+
+		write -n " $h"
+	done
+	write
+
+	write "\t@echo '$(CC ${target})'"
+	write -n "\t$Q\$(CC) \$(CFLAGS) ${cflags[$target]} -c ${target%.o}.c "
+	write -n " ${cflags[$target]}"
+	write " -o ${target}"
+	write
+}
+
+function ofile.install {
+	write "${target}.install:"
+	write
+}
+
+function ofile.uninstall {
+	write "${target}.uninstall:"
+	write
+}
+
+function ofile.clean {
+	binary.clean "$@"
+}
+