use binary provider to install liblzma (#8)

REQUIRE

@@ -1,3 +1,4 @@
 julia 0.6
+BinaryProvider 0.2
 Compat 0.62
 TranscodingStreams 0.3

deps/build.jl

@@ -0,0 +1,47 @@
+using BinaryProvider
+
+# Parse some basic command-line arguments
+const verbose = "--verbose" in ARGS
+const prefix = Prefix(get([a for a in ARGS if a != "--verbose"], 1, joinpath(@__DIR__, "usr")))
+products = [
+    LibraryProduct(prefix, String["liblzma"], :liblzma),
+]
+
+# Download binaries from hosted location
+bin_prefix = "https://github.com/bicycle1885/XzBuilder/releases/download/v1.0.0"
+
+# Listing of files generated by BinaryBuilder:
+download_info = Dict(
+    #BinaryProvider.Linux(:aarch64, :glibc, :blank_abi) => ("$bin_prefix/XzBuilder.aarch64-linux-gnu.tar.gz", "36cb5f30ef212ae889850336121b97bebe8805b77190e5b2bb5e9f30da3e471a"),
+    #BinaryProvider.UnknownPlatform() => ("$bin_prefix/XzBuilder.arm-linux-gnueabihf.tar.gz", "52a0d759997d722099078338271fb1278bab66c12f268932b94b7a8ce5feaf84"),
+    #BinaryProvider.Linux(:i686, :glibc, :blank_abi) => ("$bin_prefix/XzBuilder.i686-linux-gnu.tar.gz", "caae08967ae86557dab4d1fc9c607b131aec7390bdeb04bf201d855f88747cf6"),
+    #BinaryProvider.Windows(:i686, :blank_libc, :blank_abi) => ("$bin_prefix/XzBuilder.i686-w64-mingw32.tar.gz", "ef2f862f760e6a9b095b2182d351a826f4a192f2afbd8a4c9302d89174101cda"),
+    #BinaryProvider.Linux(:powerpc64le, :glibc, :blank_abi) => ("$bin_prefix/XzBuilder.powerpc64le-linux-gnu.tar.gz", "6f6be8b5a3670e181f3b7823559a2bb74198ed9fe680a80cb26cc42d041cd378"),
+    #BinaryProvider.MacOS(:x86_64, :blank_libc, :blank_abi) => ("$bin_prefix/XzBuilder.x86_64-apple-darwin14.tar.gz", "8aed74a3a44123d15d4fc76659bd7cf4d336fb2e200a9c897624b19bdfb5ba81"),
+    #BinaryProvider.Linux(:x86_64, :glibc, :blank_abi) => ("$bin_prefix/XzBuilder.x86_64-linux-gnu.tar.gz", "786d2c2a86452c11b31a2af8db5f80db1237e967efad2661887cbb6140214b1e"),
+    #BinaryProvider.Windows(:x86_64, :blank_libc, :blank_abi) => ("$bin_prefix/XzBuilder.x86_64-w64-mingw32.tar.gz", "239333adb161f0e3ad1971fe43b2ccb7741f4f0657d131fe1354c343261f93ce"),
+    BinaryProvider.Linux(:aarch64, :glibc) => ("$bin_prefix/XzBuilder.aarch64-linux-gnu.tar.gz", "36cb5f30ef212ae889850336121b97bebe8805b77190e5b2bb5e9f30da3e471a"),
+    BinaryProvider.Linux(:i686, :glibc) => ("$bin_prefix/XzBuilder.i686-linux-gnu.tar.gz", "caae08967ae86557dab4d1fc9c607b131aec7390bdeb04bf201d855f88747cf6"),
+    BinaryProvider.Windows(:i686) => ("$bin_prefix/XzBuilder.i686-w64-mingw32.tar.gz", "ef2f862f760e6a9b095b2182d351a826f4a192f2afbd8a4c9302d89174101cda"),
+    BinaryProvider.Linux(:powerpc64le, :glibc) => ("$bin_prefix/XzBuilder.powerpc64le-linux-gnu.tar.gz", "6f6be8b5a3670e181f3b7823559a2bb74198ed9fe680a80cb26cc42d041cd378"),
+    BinaryProvider.MacOS(:x86_64) => ("$bin_prefix/XzBuilder.x86_64-apple-darwin14.tar.gz", "8aed74a3a44123d15d4fc76659bd7cf4d336fb2e200a9c897624b19bdfb5ba81"),
+    BinaryProvider.Linux(:x86_64, :glibc) => ("$bin_prefix/XzBuilder.x86_64-linux-gnu.tar.gz", "786d2c2a86452c11b31a2af8db5f80db1237e967efad2661887cbb6140214b1e"),
+    BinaryProvider.Windows(:x86_64) => ("$bin_prefix/XzBuilder.x86_64-w64-mingw32.tar.gz", "239333adb161f0e3ad1971fe43b2ccb7741f4f0657d131fe1354c343261f93ce"),
+)
+
+# First, check to see if we're all satisfied
+if any(!satisfied(p; verbose=verbose) for p in products)
+    if haskey(download_info, platform_key())
+        # Download and install binaries
+        url, tarball_hash = download_info[platform_key()]
+        install(url, tarball_hash; prefix=prefix, force=true, verbose=verbose)
+    else
+        # If we don't have a BinaryProvider-compatible .tar.gz to download, complain.
+        # Alternatively, you could attempt to install from a separate provider,
+        # build from source or something more even more ambitious here.
+        error("Your platform $(triplet(platform_key())) is not supported by this package!")
+    end
+end
+
+# Write out a deps.jl file that will contain mappings for our products
+write_deps_file(joinpath(@__DIR__, "deps.jl"), products)

src/CodecXz.jl

@@ -9,6 +9,7 @@ export
     XzDecompressorStream
 
 using Compat: Cvoid
+using Compat.Libdl
 import TranscodingStreams:
     TranscodingStreams,
     TranscodingStream,
@@ -17,6 +18,13 @@ import TranscodingStreams:
     initialize,
     finalize
 
+const liblzmapath = joinpath(dirname(@__FILE__), "..", "deps", "deps.jl")
+if !isfile(liblzmapath)
+    error("CodecXz.jl is not installed properly, run Pkg.build(\"CodecXz\") and restart Julia.")
+end
+include(liblzmapath)
+check_deps()
+
 # TODO: This method will be added in the next version of TranscodingStreams.jl.
 function splitkwargs(kwargs, keys)
     hits = []

src/liblzma.jl

@@ -1,8 +1,6 @@
 # The liblzma Interfaces
 # ======================
 
-const liblzma = "liblzma"
-
 # Return code
 const LZMA_OK                = Cint(0)
 const LZMA_STREAM_END        = Cint(1)