Split out separate sys package

When you have an lz4 dependency in another linked C library you don't
need the full wrapper, just a way to compile and link lz4. This commit
splits this part out into a separate sys crate to create this
possiblity.

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "liblz4"]
-	path = liblz4
+	path = lz4-sys/liblz4
 	url = https://github.com/Cyan4973/lz4.git

Cargo.toml

@@ -3,7 +3,7 @@ name = "lz4"
 license = "MIT"
 version = "1.19.173"
 authors = [ "Artem V. Navrotskiy <bozaro@buzzsoft.ru>" ]
-build = "src/build.rs"
+build = "build.rs"
 description = "Rust LZ4 bindings library."
 repository = "https://github.com/bozaro/lz4-rs"
 documentation = "https://bozaro.github.io/lz4-rs/lz4/"
@@ -15,6 +15,7 @@ doc = false
 
 [dependencies]
 libc = "0.2.17"
+lz4-sys = { path = "lz4-sys", version = "1.19.173" }
 
 [dev-dependencies]
 rand = "0.3.14"

build.rs

@@ -0,0 +1,5 @@
+extern crate skeptic;
+
+fn main() {
+    skeptic::generate_doc_tests(&["README.md"]);
+}

lz4-sys/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "lz4-sys"
+license = "MIT"
+links = "lz4"
+version = "1.19.173"
+authors = [ "Artem V. Navrotskiy <bozaro@buzzsoft.ru>" ]
+build = "build.rs"
+description = "Rust LZ4 sys package."
+repository = "https://github.com/bozaro/lz4-rs"
+
+[dependencies]
+libc = "0.2.17"
+
+[build-dependencies]
+gcc = "0.3.38"

src/build.rs → lz4-sys/build.rs

@@ -1,5 +1,4 @@
 extern crate gcc;
-extern crate skeptic;
 
 use std::env;
 
@@ -21,6 +20,4 @@ fn main() {
       _ => {}
     }
     compiler.compile("liblz4.a");
-
-    skeptic::generate_doc_tests(&["README.md"]);
 }

src/liblz4.rs → lz4-sys/src/lib.rs

@@ -1,3 +1,5 @@
+extern crate libc;
+
 use std::fmt::Display;
 use std::fmt::Formatter;
 use std::io::Error;

lz4-sys/target/debug/.fingerprint/gcc-38c5b5782358c6ff/lib-gcc

@@ -0,0 +1 @@
+62c5a5336dd59f3d

lz4-sys/target/debug/.fingerprint/gcc-38c5b5782358c6ff/lib-gcc.json

@@ -0,0 +1 @@
+{"rustc":1581289781513190462,"target":10934594877106663419,"profile":11154289914177168617,"local":{"variant":"Precalculated","fields":["0.3.38"]},"features":"None","deps":[],"rustflags":[]}

lz4-sys/target/debug/.fingerprint/getopts-253b5c02e66f27ce/lib-getopts

@@ -0,0 +1 @@
+a181c744148c47ab

lz4-sys/target/debug/.fingerprint/getopts-253b5c02e66f27ce/lib-getopts.json

@@ -0,0 +1 @@
+{"rustc":1581289781513190462,"target":10649368907568964211,"profile":11154289914177168617,"local":{"variant":"Precalculated","fields":["0.2.14"]},"features":"None","deps":[],"rustflags":[]}

lz4-sys/target/debug/.fingerprint/libc-97e209e797d6d22f/lib-libc

@@ -0,0 +1 @@
+52882c79464c6203

lz4-sys/target/debug/.fingerprint/libc-97e209e797d6d22f/lib-libc.json

@@ -0,0 +1 @@
+{"rustc":1581289781513190462,"target":16430485267315036644,"profile":11154289914177168617,"local":{"variant":"Precalculated","fields":["0.2.17"]},"features":"Some([\"default\", \"use_std\"])","deps":[],"rustflags":[]}

lz4-sys/target/debug/.fingerprint/lz4-sys-f8b423c7229c52a6/build

@@ -0,0 +1 @@
+4dcd00ef20838953

lz4-sys/target/debug/.fingerprint/lz4-sys-f8b423c7229c52a6/build-script-build-script-build

@@ -0,0 +1 @@
+1bd446d9a6fd2783

lz4-sys/target/debug/.fingerprint/lz4-sys-f8b423c7229c52a6/build-script-build-script-build.json

@@ -0,0 +1 @@
+{"rustc":1581289781513190462,"target":4086851835445132369,"profile":11154289914177168617,"local":{"variant":"MtimeBased","fields":[[1479985363,0],[47,85,115,101,114,115,47,116,104,105,106,115,47,111,112,101,110,115,111,117,114,99,101,47,108,122,52,45,114,115,47,108,122,52,45,115,121,115,47,116,97,114,103,101,116,47,100,101,98,117,103,47,46,102,105,110,103,101,114,112,114,105,110,116,47,108,122,52,45,115,121,115,45,102,56,98,52,50,51,99,55,50,50,57,99,53,50,97,54,47,100,101,112,45,98,117,105,108,100,45,115,99,114,105,112,116,45,98,117,105,108,100,45,115,99,114,105,112,116,45,98,117,105,108,100]]},"features":"None","deps":[["gcc v0.3.38",4440502422605251938]],"rustflags":[]}

lz4-sys/target/debug/.fingerprint/lz4-sys-f8b423c7229c52a6/build.json

@@ -0,0 +1 @@
+{"rustc":0,"target":0,"profile":0,"local":{"variant":"Precalculated","fields":["1479985359.000000000s (/Users/thijs/opensource/lz4-rs/lz4-sys/build.rs)"]},"features":"","deps":[],"rustflags":[]}

lz4-sys/target/debug/.fingerprint/lz4-sys-f8b423c7229c52a6/lib-lz4-sys

@@ -0,0 +1 @@
+3af191810829233a

lz4-sys/target/debug/.fingerprint/lz4-sys-f8b423c7229c52a6/lib-lz4-sys.json

@@ -0,0 +1 @@
+{"rustc":1581289781513190462,"target":596805854859732480,"profile":11154289914177168617,"local":{"variant":"MtimeBased","fields":[[1479985366,0],[47,85,115,101,114,115,47,116,104,105,106,115,47,111,112,101,110,115,111,117,114,99,101,47,108,122,52,45,114,115,47,108,122,52,45,115,121,115,47,116,97,114,103,101,116,47,100,101,98,117,103,47,46,102,105,110,103,101,114,112,114,105,110,116,47,108,122,52,45,115,121,115,45,102,56,98,52,50,51,99,55,50,50,57,99,53,50,97,54,47,100,101,112,45,108,105,98,45,108,122,52,45,115,121,115]]},"features":"None","deps":[],"rustflags":[]}

lz4-sys/target/debug/.fingerprint/pulldown-cmark-4175b767468d1b6d/lib-pulldown-cmark

@@ -0,0 +1 @@
+629b4196ea83e8b7

lz4-sys/target/debug/.fingerprint/pulldown-cmark-4175b767468d1b6d/lib-pulldown-cmark.json

@@ -0,0 +1 @@
+{"rustc":1581289781513190462,"target":8028671582974977263,"profile":11154289914177168617,"local":{"variant":"Precalculated","fields":["0.0.3"]},"features":"None","deps":[["getopts v0.2.14",12341987322513293729]],"rustflags":[]}

lz4-sys/target/debug/.fingerprint/rand-173b36935437ad96/lib-rand

@@ -0,0 +1 @@
+a0cbec03dc158cb8

lz4-sys/target/debug/.fingerprint/rand-173b36935437ad96/lib-rand.json

@@ -0,0 +1 @@
+{"rustc":1581289781513190462,"target":15004223012595257668,"profile":11154289914177168617,"local":{"variant":"Precalculated","fields":["0.3.14"]},"features":"None","deps":[["libc v0.2.17",243841195395811410]],"rustflags":[]}

lz4-sys/target/debug/.fingerprint/skeptic-3c5c65ed7b3be692/lib-skeptic

@@ -0,0 +1 @@
+e4b317f9127d2e14

lz4-sys/target/debug/.fingerprint/skeptic-3c5c65ed7b3be692/lib-skeptic.json

@@ -0,0 +1 @@
+{"rustc":1581289781513190462,"target":11210667810463921453,"profile":11154289914177168617,"local":{"variant":"Precalculated","fields":["0.6.1"]},"features":"None","deps":[["pulldown-cmark v0.0.3",13251986947104152418],["tempdir v0.3.5",4750383001660746962]],"rustflags":[]}

lz4-sys/target/debug/.fingerprint/tempdir-b796943e830b17ca/lib-tempdir

@@ -0,0 +1 @@
+d2ec0ae12bc0ec41

lz4-sys/target/debug/.fingerprint/tempdir-b796943e830b17ca/lib-tempdir.json

@@ -0,0 +1 @@
+{"rustc":1581289781513190462,"target":11374385560762608064,"profile":11154289914177168617,"local":{"variant":"Precalculated","fields":["0.3.5"]},"features":"None","deps":[["rand v0.3.14",13298027834421070752]],"rustflags":[]}

lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/build_script_build.dSYM/Contents/Info.plist

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+	<dict>
+		<key>CFBundleDevelopmentRegion</key>
+		<string>English</string>
+		<key>CFBundleIdentifier</key>
+		<string>com.apple.xcode.dsym.build_script_build</string>
+		<key>CFBundleInfoDictionaryVersion</key>
+		<string>6.0</string>
+		<key>CFBundlePackageType</key>
+		<string>dSYM</string>
+		<key>CFBundleSignature</key>
+		<string>????</string>
+		<key>CFBundleShortVersionString</key>
+		<string>1.0</string>
+		<key>CFBundleVersion</key>
+		<string>1</string>
+	</dict>
+</plist>

lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/output

@@ -0,0 +1,97 @@
+TARGET = Some("x86_64-apple-darwin")
+PROFILE = Some("debug")
+TARGET = Some("x86_64-apple-darwin")
+debug=true opt-level=3
+HOST = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+HOST = Some("x86_64-apple-darwin")
+CC_x86_64-apple-darwin = None
+CC_x86_64_apple_darwin = None
+HOST_CC = None
+CC = None
+HOST = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+HOST = Some("x86_64-apple-darwin")
+CFLAGS_x86_64-apple-darwin = None
+CFLAGS_x86_64_apple_darwin = None
+HOST_CFLAGS = None
+CFLAGS = None
+running: "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-g" "-m64" "-fPIC" "-o" "/Users/thijs/opensource/lz4-rs/lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/out/liblz4/lib/lz4.o" "-c" "liblz4/lib/lz4.c"
+ExitStatus(ExitStatus(0))
+TARGET = Some("x86_64-apple-darwin")
+PROFILE = Some("debug")
+TARGET = Some("x86_64-apple-darwin")
+debug=true opt-level=3
+HOST = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+HOST = Some("x86_64-apple-darwin")
+CC_x86_64-apple-darwin = None
+CC_x86_64_apple_darwin = None
+HOST_CC = None
+CC = None
+HOST = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+HOST = Some("x86_64-apple-darwin")
+CFLAGS_x86_64-apple-darwin = None
+CFLAGS_x86_64_apple_darwin = None
+HOST_CFLAGS = None
+CFLAGS = None
+running: "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-g" "-m64" "-fPIC" "-o" "/Users/thijs/opensource/lz4-rs/lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/out/liblz4/lib/lz4frame.o" "-c" "liblz4/lib/lz4frame.c"
+ExitStatus(ExitStatus(0))
+TARGET = Some("x86_64-apple-darwin")
+PROFILE = Some("debug")
+TARGET = Some("x86_64-apple-darwin")
+debug=true opt-level=3
+HOST = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+HOST = Some("x86_64-apple-darwin")
+CC_x86_64-apple-darwin = None
+CC_x86_64_apple_darwin = None
+HOST_CC = None
+CC = None
+HOST = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+HOST = Some("x86_64-apple-darwin")
+CFLAGS_x86_64-apple-darwin = None
+CFLAGS_x86_64_apple_darwin = None
+HOST_CFLAGS = None
+CFLAGS = None
+running: "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-g" "-m64" "-fPIC" "-o" "/Users/thijs/opensource/lz4-rs/lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/out/liblz4/lib/lz4hc.o" "-c" "liblz4/lib/lz4hc.c"
+ExitStatus(ExitStatus(0))
+TARGET = Some("x86_64-apple-darwin")
+PROFILE = Some("debug")
+TARGET = Some("x86_64-apple-darwin")
+debug=true opt-level=3
+HOST = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+HOST = Some("x86_64-apple-darwin")
+CC_x86_64-apple-darwin = None
+CC_x86_64_apple_darwin = None
+HOST_CC = None
+CC = None
+HOST = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+HOST = Some("x86_64-apple-darwin")
+CFLAGS_x86_64-apple-darwin = None
+CFLAGS_x86_64_apple_darwin = None
+HOST_CFLAGS = None
+CFLAGS = None
+running: "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-g" "-m64" "-fPIC" "-o" "/Users/thijs/opensource/lz4-rs/lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/out/liblz4/lib/xxhash.o" "-c" "liblz4/lib/xxhash.c"
+ExitStatus(ExitStatus(0))
+TARGET = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+HOST = Some("x86_64-apple-darwin")
+AR_x86_64-apple-darwin = None
+AR_x86_64_apple_darwin = None
+HOST_AR = None
+AR = None
+TARGET = Some("x86_64-apple-darwin")
+TARGET = Some("x86_64-apple-darwin")
+running: "ar" "crs" "/Users/thijs/opensource/lz4-rs/lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/out/liblz4.a" "/Users/thijs/opensource/lz4-rs/lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/out/liblz4/lib/lz4.o" "/Users/thijs/opensource/lz4-rs/lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/out/liblz4/lib/lz4frame.o" "/Users/thijs/opensource/lz4-rs/lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/out/liblz4/lib/lz4hc.o" "/Users/thijs/opensource/lz4-rs/lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/out/liblz4/lib/xxhash.o"
+ExitStatus(ExitStatus(0))
+cargo:rustc-link-lib=static=lz4
+cargo:rustc-link-search=native=/Users/thijs/opensource/lz4-rs/lz4-sys/target/debug/build/lz4-sys-f8b423c7229c52a6/out

src/lib.rs

@@ -1,6 +1,6 @@
 extern crate libc;
 
-pub mod liblz4;
+extern crate lz4_sys as liblz4;
 
 mod decoder;
 mod encoder;