scc

commit 8db691ec62143bac4b0f6522b5fa63a6895045a3
parent 6218a27302cdb6c8a0d8f565b9218ea7aa895edb
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Thu, 24 Oct 2024 21:55:31 +0200

build: Add make dep target

This target is used to generate makefiles based in the Makefiles
but including the inclusion dependencies.

Diffstat:
M
.gitignore
 | 
1
+
M
Makefile
 | 
2
+-
M
README
 | 
7
+++++++
M
scripts/mkdep
 | 
21
++++++++++-----------
M
scripts/rules.mk
 | 
1
-

5 files changed, 19 insertions(+), 13 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -33,3 +33,4 @@ dirs
 /src/cmd/scc-ld/scc-ld
 /src/cmd/scc-make/scc-make
 /config.mk
+makefile
diff --git a/Makefile b/Makefile
@@ -1,6 +1,6 @@
 .POSIX:
 
-all tests install uninstall: check_config FORCE
+all dep tests install uninstall: check_config FORCE
 	+@$(MAKE) -f main.mk $@
 
 check_config: FORCE
diff --git a/README b/README
@@ -109,6 +109,13 @@ The main targets of the Makefile are:
 	  for all the available configurations based in the host
 	  architecture.
 
+	- dep:
+	  Generate inclusion dependencies, very useful while
+	  modifying the code. Beware that it creates files with
+	  the name `makefile` and changes to `Makefile` files
+	  are not reflected in the build proces until a `make distclean`
+	  or a `make dep` is executed again.
+
 	- config:
 	  Generate config.mk and the headers `include/bits/scc/sys.h`,
 	  `include/bits/scc/std.h` and `include/bits/scc/config.h`.
diff --git a/scripts/mkdep b/scripts/mkdep
@@ -2,11 +2,12 @@
 
 set -e
 
-echo '#deps' > deps.mk
+tmp=$$.tmp
+trap "rm -f $tmp" EXIT INT TERM HUP
 
-cat <<EOF | ed -s deps.mk
-a
-$(for i in `find . -name '*.c'`
+(cat Makefile
+printf "\n#deps\n"
+for i in `find . -name '*.c'`
 do
 	file=`basename $i | sed 's/\.c$/.o/'`
 	dir=`dirname $i`
@@ -16,10 +17,8 @@ do
 		s@\"\(.*\)\"@$dir/$file: $dir/\1@p
 		s@<\(scc/.*\)>@$dir/$file: \$(INCDIR)/bits/\1@p
 	}" $i
-done | LC_ALL=C sort -s)
-.
-g@^\./@ s///
-g@ \./@ s// /
-g/^$/d
-w
-EOF
+done |
+sed -e 's@^\./@@' -e 's@ \./@ @g' |
+LC_ALL=C sort -s) > $tmp
+
+mv $tmp makefile
diff --git a/scripts/rules.mk b/scripts/rules.mk
@@ -204,7 +204,6 @@ dep: inc-dep
 	@set -e; \
 	for i in $(DIRS); \
 	do \
-		test $$i = qbe && continue;\
 		test $$i = tests && continue;\
 		cd $$i; \
 		$(MAKE) $@; \