get libz from BinaryBuilder system

.gitignore

@@ -1,4 +1,4 @@
 *.swp
-deps/deps.jl
+deps/deps*.jl
 docs/build
 .DS_Store

REQUIRE

@@ -2,6 +2,7 @@ julia 0.7
 Cairo 0.2.2
 Graphics 0.1
 BinDeps
+BinaryProvider 0.3.0
 Reexport
 @windows WinRPM
 @osx Homebrew

deps/build.jl

@@ -60,6 +60,22 @@ if Sys.isapple()
     Homebrew.add("adwaita-icon-theme")
 end
 
+if Sys.islinux()
+    using BinaryProvider # requires BinaryProvider 0.3.0 or later
+
+    dependencies = [
+        "build_Zlib.v1.2.11.jl",
+    ]
+
+    for elem in dependencies
+        # it's a bit faster to run the build in an anonymous module instead of
+        # starting a new julia process
+        m = Module(:__anon__)
+        Core.include(m, (joinpath(@__DIR__, elem)))
+    end
+
+end
+
 @BinDeps.install Dict([
     (:glib, :libglib),
     (:gobject, :libgobject),
@@ -68,3 +84,31 @@ end
     (:gdk_pixbuf, :libgdk_pixbuf),
     (:gio, :libgio),
 ])
+
+if Sys.islinux()
+    # WARNING: This is nonstandard use of BinaryBuilder tools.
+    # We are insuring that BB-managed libs are loaded before the noncompliant
+    # ones.
+    function include_deps(name)
+        """
+        module $name
+            import Libdl
+            path = joinpath(@__DIR__, $(repr(string("deps_", name, ".jl"))))
+                isfile(path) || error("$name wasn't build correctly. Please run Pkg.build(\\\"Gtk\\\")")
+            include(path)
+            function __init__()
+                if Sys.islinux()
+                    check_deps()
+                end
+            end
+        end
+        """
+    end
+
+    open("deps.jl", "a") do io
+        for dep in (:zlib,)
+            println(io, include_deps(dep))
+        end
+        # normally one would define the check_deps wrapper here
+    end
+end

deps/build_Zlib.v1.2.11.jl

@@ -0,0 +1,46 @@
+using BinaryProvider # requires BinaryProvider 0.3.0 or later
+
+# 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, ["libz"], :libz),
+]
+
+# Download binaries from hosted location
+bin_prefix = "https://github.com/bicycle1885/ZlibBuilder/releases/download/v1.0.2"
+
+# Listing of files generated by BinaryBuilder:
+download_info = Dict(
+    Linux(:aarch64, :glibc) => ("$bin_prefix/Zlib.v1.2.11.aarch64-linux-gnu.tar.gz", "66e6b2414a4fc9a5b8392b70efef9c4d163fad5159270c78e0740eebec95a415"),
+    Linux(:aarch64, :musl) => ("$bin_prefix/Zlib.v1.2.11.aarch64-linux-musl.tar.gz", "2445bd730e8f7c9dcaaace86b15244549d8630f4d78ce4c4df3fb693adde1333"),
+    Linux(:armv7l, :glibc, :eabihf) => ("$bin_prefix/Zlib.v1.2.11.arm-linux-gnueabihf.tar.gz", "d6417bffeacdc542a0b35407e1d8cf7a85d8c9d695868c7770df57fe556c5a6f"),
+    Linux(:armv7l, :musl, :eabihf) => ("$bin_prefix/Zlib.v1.2.11.arm-linux-musleabihf.tar.gz", "0ec51f27db2a7dc3c8056b18a99776ccc7459e6e5127cf82efeca770945d68b6"),
+    Linux(:i686, :glibc) => ("$bin_prefix/Zlib.v1.2.11.i686-linux-gnu.tar.gz", "1d2bba7f971ab3576d84ce5094cc8e0849d6c7552182146454d90cae1714a542"),
+    Linux(:i686, :musl) => ("$bin_prefix/Zlib.v1.2.11.i686-linux-musl.tar.gz", "06a77d15bb8ea3db8f7c45b06cf9b2b6944804147ef5ac5de11527a2badca886"),
+    Windows(:i686) => ("$bin_prefix/Zlib.v1.2.11.i686-w64-mingw32.tar.gz", "db1063328e9f2a961977f870e1954a977f86066f2aa0922ccba6e559aee22484"),
+    Linux(:powerpc64le, :glibc) => ("$bin_prefix/Zlib.v1.2.11.powerpc64le-linux-gnu.tar.gz", "13bc52cec6a5f40ef81ecb5120b123c6f63508e1b999c76b48ccf27a7029a1bd"),
+    MacOS(:x86_64) => ("$bin_prefix/Zlib.v1.2.11.x86_64-apple-darwin14.tar.gz", "deb72ecf071dc410870d9df75f3dbeef00c084394e1fc8e8631f5928ead3b87b"),
+    Linux(:x86_64, :glibc) => ("$bin_prefix/Zlib.v1.2.11.x86_64-linux-gnu.tar.gz", "26f8ddebd91628ca5c08310ec3ed6d7ebef1598ccabc34e5e4d495c6b21d89d0"),
+    Linux(:x86_64, :musl) => ("$bin_prefix/Zlib.v1.2.11.x86_64-linux-musl.tar.gz", "e826ceffc841d2abf67854ce9ed739ae2d32d1b5acc46df6233b8fd1b549cc12"),
+    FreeBSD(:x86_64) => ("$bin_prefix/Zlib.v1.2.11.x86_64-unknown-freebsd11.1.tar.gz", "223f1f7886e45f2b1af889d5045402cbc0c22175515e593fead19099e5378741"),
+    Windows(:x86_64) => ("$bin_prefix/Zlib.v1.2.11.x86_64-w64-mingw32.tar.gz", "016d0ad7dedea4aed59059ba0cf5776ca6955ebcdec262035391ec717e9b67df"),
+)
+
+# Install unsatisfied or updated dependencies:
+unsatisfied = any(!satisfied(p; verbose=verbose) for p in products)
+if haskey(download_info, platform_key())
+    url, tarball_hash = download_info[platform_key()]
+    if unsatisfied || !isinstalled(url, tarball_hash; prefix=prefix)
+        # Download and install binaries
+        install(url, tarball_hash; prefix=prefix, force=true, verbose=verbose)
+    end
+elseif unsatisfied
+    # 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 even more ambitious here.
+    error("Your platform $(triplet(platform_key())) is not supported by this package!")
+end
+
+# Write out a deps.jl file that will contain mappings for our products
+write_deps_file(joinpath(@__DIR__, "deps_zlib.jl"), products)