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	sbase-box: Simplify Makefile rule - sbase - suckless unix tools
	git clone git://git.suckless.org/sbase
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	---
	commit 3c36fb417738b5830f9f22b0ac88a266dd6eed5b
	parent 8ca12835a58ead392822bfd52241e68eba7cd99f
	Author: Roberto E. Vargas Caballero <[email protected]>
	Date: Tue, 26 Sep 2023 19:26:47 +0200

	sbase-box: Simplify Makefile rule

	The Makefile rule was too complex and these cases is better to just
	move it to a script where will be eassier to use sed properly
	and not looping over all the files 4 times.

	Diffstat:
	M .gitignore \| 1 +
	M Makefile \| 23 +++--------------------
	A scripts/mkbox \| 66 +++++++++++++++++++++++++++++…

	3 files changed, 70 insertions(+), 20 deletions(-)
	---
	diff --git a/.gitignore b/.gitignore
	@@ -1,4 +1,5 @@
	*.o
	+/build
	/getconf.h
	/libutf.a
	/libutil.a
	diff --git a/Makefile b/Makefile
	@@ -236,27 +236,9 @@ dist: clean
	gzip sbase-$(VERSION).tar
	rm -rf sbase-$(VERSION)

	-sbase-box: $(LIB) $(SRC) getconf.h
	- mkdir -p build
	- cp $(HDR) build
	- cp getconf.h build
	- for f in $(SRC); do sed "s/^main(/$$(echo "$${f%.c}" \| sed s/-/_/g)_&/…
	- echo '#include <libgen.h>' …
	- echo '#include <stdio.h>' …
	- echo '#include <stdlib.h>' …
	- echo '#include <string.h>' …
	- echo '#include "util.h"' …
	- for f in $(SRC); do echo "int $$(echo "$${f%.c}" \| sed s/-/_/g)_main(i…
	- echo 'int main(int argc, char argv[]) { char s = basename(argv[0]);'…
	- echo 'if(!strcmp(s,"sbase-box")) { argc--; argv++; s = basename(argv[0…
	- echo "else if (!strcmp(s, \"install\")) return xinstall_main(argc, arg…
	- echo "else if (!strcmp(s, \"[\")) return test_main(argc, argv);" …
	- for f in $(SRC); do echo "else if(!strcmp(s, \"$${f%.c}\")) return $$(…
	- echo 'else { fputs("[ ", stdout);' …
	- for f in $(SRC); do echo "fputs(\"$${f%.c} \", stdout);"; done …
	- echo 'putchar(0xa); }; return 0; }' …
	+sbase-box: $(BIN)
	+ scripts/mkbox
	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $@ build/*.c $(LIB)
	- rm -r build

	sbase-box-install: sbase-box
	mkdir -p $(DESTDIR)$(PREFIX)/bin
	@@ -276,5 +258,6 @@ sbase-box-uninstall: uninstall
	clean:
	rm -f $(BIN) $(OBJ) $(LIB) sbase-box sbase-$(VERSION).tar.gz
	rm -f getconf.h
	+ rm -rf build

	.PHONY: all install uninstall dist sbase-box-install sbase-box-uninstall clean
	diff --git a/scripts/mkbox b/scripts/mkbox
	@@ -0,0 +1,66 @@
	+#!/bin/sh
	+
	+trap "rm -rf build" INT QUIT TERM
	+
	+rm -rf build
	+mkdir -p build
	+
	+cp *.h build
	+
	+cat > build/sbase-box.c <<EOF
	+#include <libgen.h>
	+#include <stdio.h>
	+#include <stdlib.h>
	+#include <string.h>
	+
	+#include "util.h"
	+#include "sbase-box.h"
	+
	+struct cmd {
	+ char *name;
	+ int (fn)(int, char *);
	+} cmds[] = {
	+ {"install", xinstall_main},
	+ {"[", test_main},
	+$(grep -l ^main *.c \|
	+while read f
	+do
	+ sed -n '
	+ /^main/ {
	+ s/main/'${f%.c}'_main/
	+ s/-/_/g
	+ w build/'$f'
	+ s/$^.$(.)/ {"'${f%.c}'", \1},/p
	+ d
	+ }
	+ w 'build/$f $f
	+done)
	+ {NULL},
	+};
	+
	+int
	+main(int argc, char *argv[])
	+{
	+ char *s = basename(argv[0]);
	+ struct cmd *bp;
	+
	+ if(!strcmp(s,"sbase-box")) {
	+ argc--; argv++;
	+ s = basename(argv[0]);
	+ }
	+
	+ for (bp = cmds; bp->name; ++bp) {
	+ if (strcmp(bp->name, s) == 0)
	+ return (*bp->fn)(argc, argv);
	+ }
	+
	+ for (bp = cmds; bp->name; ++bp)
	+ printf("%s ", bp->name);
	+ putchar('\n');
	+
	+ return 0;
	+}
	+EOF
	+
	+sed -n 's/.* $._main$./int \1(int, char **);/p'\
	+ build/sbase-box.c > build/sbase-box.h