From 45277e43431b868192c5d313672a49ae54f67ed8 Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Fri, 14 Aug 2020 21:20:03 -0400
Subject: begin new dependency builder

---
 mk/deps.sh | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 mk/deps.sh

diff --git a/mk/deps.sh b/mk/deps.sh
new file mode 100644
index 00000000..351ea6ac
--- /dev/null
+++ b/mk/deps.sh
@@ -0,0 +1,36 @@
+#!/bin/sh
+SOURCE=$1
+BASE=$(basename $SOURCE .c)
+LIB=$(grep LINK $SOURCE | tr -d 'LINK()')
+test -z "$LIB" && LIB="c"
+
+if ! grep -q "^mk/$BASE.d:" mk/deps.mk 2>&1; then
+	printf 'all: mk/%s.d\n' $BASE >> mk/deps.mk
+	printf 'mk/%s.d: %s\n' $BASE $SOURCE >> mk/deps.mk
+	printf '\tsh mk/deps.sh %s\n\n' $SOURCE >> mk/deps.mk
+fi
+
+if ! grep -q "include mk/$BASE.d" mk/all.mk 2>&1; then
+	printf 'include mk/%s.d\n' $BASE >> mk/all.mk
+fi
+
+exec > mk/$BASE.d
+
+C=$(grep -F 'STDC(' $SOURCE | sed -e 's/STDC(//;s/,.*//;s/)$//g')
+test -n "$C" && printf 'lib%s_C.%s: lib%s.a(%s.o)\n' $LIB $C $LIB $BASE
+
+P=$(grep -F 'POSIX(' $SOURCE | sed -e 's/POSIX(//;s/,.*//;s/)$//g')
+test -n "$P" && printf 'lib%s_P.%s: lib%s.a(%s.o)\n' $LIB $P $LIB $BASE
+
+X=$(grep -F 'XOPEN(' $SOURCE | sed -e 's/XOPEN(//;s/,.*//;s/)$//g')
+test -n "$X" && printf 'lib%s_X.%s: lib%s.a(%s.o)\n' $LIB $X $LIB $BASE
+
+printf 'lib%s.a(%s.o): $(OBJDIR)/%s.o\n' $LIB $BASE $BASE
+printf '$(OBJDIR)/%s.o: %s\n' $BASE $SOURCE
+
+# includes
+
+printf '$(OBJDIR)/%s.o:\n' $BASE
+printf '\t@echo [CC] $@\n'
+printf '\t@mkdir -p $(@D)\n'
+printf '\t@$(CC) -c -o $@ $(CFLAGS) %s\n' $SOURCE
-- 
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