From 3d5a3545f7d900177ecee5046d6660f878d96537 Mon Sep 17 00:00:00 2001
From: Philipp Gesang <phg@phi-gamma.net>
Date: Mon, 15 Nov 2021 20:14:50 +0100
Subject: decontaminate library from clap and anyhow deps

---
 Cargo.toml | 21 +++++++++++++--------
 Makefile   | 19 +++++++++++++++----
 2 files changed, 28 insertions(+), 12 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 63c199b..d1483dc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,17 +13,22 @@ readme      = "README.rst"
 license     = "GPL-3.0"
 edition     = "2021"
 
+[dependencies]
+libc        = "0.2"
+clap        = { version = "2.33", optional = true }
+anyhow      = { version = "1.0", optional = true }
+
+[features]
+vtcol-bin   = [ "anyhow", "clap" ]
+
 [[bin]]
-name        = "vtcol"
-path        = "src/vtcol.rs"
-test        = false
-doc         = false
+name                    = "vtcol"
+path                    = "src/vtcol.rs"
+test                    = false
+doc                     = false
+required-features       = [ "vtcol-bin" ]
 
 [lib]
 # doctests suck
 doctest     = false
 
-[dependencies]
-clap        = "2.33"
-libc        = "0.2"
-anyhow      = "1.0"
diff --git a/Makefile b/Makefile
index 446ffe9..a8db336 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,19 @@
 manpage		= doc/vtcol.1.gz
 cargo-target 	= ./target
 bin 		= $(cargo-target)/release/vtcol
-src 		= src/vtcol.rs
+lib 		= $(cargo-target)/release/libvtcol.rlib
+bin-src 	= src/vtcol.rs
+lib-src 	= src/lib.rs
+src	 	= $(bin-src) $(lib-src)
 meta 		= Cargo.toml
 rustdoc-entry	= target/doc/vtcol/index.html
 
-all: bin doc
+all: bin lib doc
+
+check: $(src)
+	cargo test 
+
+lib: $(lib)
 
 bin: $(bin)
 
@@ -15,8 +23,11 @@ man: $(manpage)
 
 rustdoc: $(rustdoc-entry)
 
+$(lib): $(lib-src) $(meta)
+	cargo build --release 
+
 $(bin): $(src) $(meta)
-	cargo build --release
+	cargo build --bin=vtcol --features=vtcol-bin --release 
 
 $(manpage): doc/vtcol.rst
 	rst2man $< |gzip > $@
@@ -28,4 +39,4 @@ clean:
 	rm -f -- $(manpage)
 	rm -rf -- $(cargo-target)
 
-.PHONY: clean
+.PHONY: clean check
-- 
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