From c72c2cc00b2a9e2c7ce7ba0ff22908c209f24822 Mon Sep 17 00:00:00 2001
From: merakor <cem@ckyln.com>
Date: Sun, 20 Dec 2020 08:13:57 +0000
Subject: try out the redo build system

FossilOrigin-Name: 6ca0330a7e548be4e516ad6c275b2878a1521d2de5263fd75defc16f8f52c93b
---
 .gitignore   | 11 +++++++++-
 all.do       |  2 ++
 bin/all.do   |  2 ++
 bin/clean.do |  2 ++
 clean.do     |  5 +++++
 config.rc    | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 default.do   | 42 ++++++++++++++++++++++++++++++++++++++
 dist.do      |  3 +++
 8 files changed, 132 insertions(+), 1 deletion(-)
 create mode 100644 all.do
 create mode 100644 bin/all.do
 create mode 100644 bin/clean.do
 create mode 100644 clean.do
 create mode 100644 config.rc
 create mode 100644 default.do
 create mode 100644 dist.do

diff --git a/.gitignore b/.gitignore
index 6a09127..a4f8bc0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,4 +14,13 @@ getopt
 [._]*.sw[a-p]
 [._]s[a-rt-v][a-z]
 [._]ss[a-gi-z]
-[._]sw[a-p]
\ No newline at end of file
+[._]sw[a-p]
+
+### Redo files
+/.redo
+/.do_built
+/.do_built.dir
+*.tmp
+*.did
+.dep*
+.target*
diff --git a/all.do b/all.do
new file mode 100644
index 0000000..60dfc91
--- /dev/null
+++ b/all.do
@@ -0,0 +1,2 @@
+. ./config.rc
+redo-ifchange bin/all doc/cpt.info
diff --git a/bin/all.do b/bin/all.do
new file mode 100644
index 0000000..aceda74
--- /dev/null
+++ b/bin/all.do
@@ -0,0 +1,2 @@
+. ../config.rc
+redo-ifchange cpt-readlink cpt-stat
diff --git a/bin/clean.do b/bin/clean.do
new file mode 100644
index 0000000..6234248
--- /dev/null
+++ b/bin/clean.do
@@ -0,0 +1,2 @@
+. ../config.rc
+rm -f -- ./*.o cpt-readlink cpt-stat .dep.*
diff --git a/clean.do b/clean.do
new file mode 100644
index 0000000..389daf3
--- /dev/null
+++ b/clean.do
@@ -0,0 +1,5 @@
+. ./config.rc
+redo bin/clean
+redo_clean
+rm -f "cpt-$VERSION.tar.xz"
+find doc -name '*.info' -exec rm -f -- {} +
diff --git a/config.rc b/config.rc
new file mode 100644
index 0000000..d1b2281
--- /dev/null
+++ b/config.rc
@@ -0,0 +1,66 @@
+# -*- mode: redo -*-
+# See LICENSE for copyright information
+
+setv() {
+    # Set variables if unset. Works similar to the Makefile syntax.
+    [ "$3" ] || {
+        printf '%s\n' "Faulty variable syntax" >&2
+        exit 1
+    }
+    var=$1; sym=$2; shift 2
+    case "$sym" in
+        \?=|=) eval "[ \"\$$var\" ]" || export "$var=$*" ;;
+        +=)    eval "export \"$var=\$$var $*\""
+    esac
+}
+
+redo_clean() {
+    # Clean function for various redo implementations
+    [ -r .do_built ] && {
+        while read -r file; do
+            [ -d "$file" ] || rm -f "$file"
+        done < .do_built
+    }
+    find . -type f \( -name '*.tmp' -o -name '*.did' -o -name '.dep*' -o -name '.target*' \) \
+         -exec rm -f -- {} +
+    [ "$DO_BUILT" ]  || find . -name '.do_built*' -exec rm -rf -- {} +
+    [ "$REDO_BASE" ] || rm -rf -- .redo
+}
+
+PHONY() {
+    # Function that resembles the .PHONY: target on the classic 'make' build
+    # system.
+    [ "$1" ] || {
+        trap 'rm -f $3' EXIT INT
+        return 0
+    }
+    setv PHONY += "$@"
+    trap 'case " $PHONY " in *" $1 "*) rm -f $3; esac' EXIT INT
+}
+
+setv VERSION = 5.1.0
+
+# Paths
+setv PREFIX    = /usr/local
+setv BINDIR    = "${PREFIX}/bin"
+setv SHAREDIR  = "${PREFIX}/share"
+setv DOCDIR    = "${SHAREDIR}/doc"
+setv CPTDOC    = "${DOCDIR}/cpt"
+setv MANPREFIX = "${SHAREDIR}/man"
+setv MAN1      = "${MANPREFIX}/man1"
+
+# Flags
+setv CFLAGS = -std=c99 -Wpedantic -Wall -Os
+setv CFLAGS += -D_XOPEN_SOURCE=700
+setv LDFLAGS = -s -static
+setv LIBS    = -lc
+
+setv CC = cc
+setv LD = "${CC}"
+
+# Documentation tools
+setv EMACS    = emacs
+setv MAKEINFO = makeinfo
+
+# Phony targets
+PHONY all dist clean install uninstall test
diff --git a/default.do b/default.do
new file mode 100644
index 0000000..2d091c6
--- /dev/null
+++ b/default.do
@@ -0,0 +1,42 @@
+. ./config.rc
+
+# Extensionless name of file
+fn="${1%.*}"
+
+case "$1" in
+    bin/cpt-readlink|bin/cpt-stat)
+        redo-ifchange "$1.o"
+        "$CC" -o "$3" $LDFLAGS "$1.o" $LIBS
+        ;;
+    *.o)
+        [ -f "${1%.o}.c" ] || exit 99
+        redo-ifchange "$fn.c"
+        "$CC" -c -o "$3" $CFLAGS "$fn.c"
+        ;;
+    *.info)
+        redo-ifchange "$fn.texi"
+        $MAKEINFO "$fn.texi" -o "$3"
+        ;;
+    *.texi)
+        [ -f "$fn.org" ] || exit 99
+        redo-ifchange "$fn.org"
+        $EMACS "$fn.org" --batch -f org-texinfo-export-to-texinfo
+        mv "$1" "$3"
+        ;;
+    "cpt-$VERSION.tar.xz")
+        redo doc/cpt.info
+        rm -rf -- "cpt-$VERSION"
+        find . -type f ! -name '.*' ! -path './.*' |
+            while read -r file; do
+                mkdir -p "cpt-$VERSION/${file%/*}"
+                cp "$file" "cpt-$VERSION/$file"
+            done
+        tar cf "cpt-$VERSION.tar" "cpt-$VERSION"
+        xz -z "cpt-$VERSION.tar"
+        rm -rf -- "cpt-$VERSION"
+        mv "$1" "$3"
+        ;;
+    *)
+        echo "Unknown target $1"
+        exit 99
+esac
diff --git a/dist.do b/dist.do
new file mode 100644
index 0000000..c7f21f1
--- /dev/null
+++ b/dist.do
@@ -0,0 +1,3 @@
+. ./config.rc
+redo clean
+redo "cpt-$VERSION.tar.xz"
-- 
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