Attempt to work around problems like #55 using symlink magic

Luckily for us, we don't have the problem of distribution packagers
changing BLAS library names on platforms like Windows where this
solutino wouldn't work.  Eventually, this will most likely be obsoleted
by the linker hacks that Keno and I will write to fix linking multiple
disparate folders together.

deps/build.jl

@@ -1,4 +1,7 @@
-using BinaryProvider # requires BinaryProvider 0.3.0 or later
+using BinaryProvider, Libdl
+
+## NOTE: This is not a typical build.jl file; it has extra stuff toward the bottom.
+## Don't just replace this file with the output of a BinaryBuilder repository!
 
 # Parse some basic command-line arguments
 const verbose = "--verbose" in ARGS
@@ -53,6 +56,50 @@ download_info = Dict(
     Windows(:x86_64, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-w64-mingw32-gcc8.tar.gz", "1fc0035e5bd62448243f8ed09041dee6a2480ea23e648c47b9d56d1f467a0ca0"),
 )
 
+
+# Regenerate this with `get_default_blaslib_names.jl`
+default_blaslib_names = Dict(
+    Linux(:i686, libc=:musl, compiler_abi=CompilerABI(:gcc8)) => "libopenblas.so.0",
+    Linux(:x86_64, libc=:musl, compiler_abi=CompilerABI(:gcc4)) => "libopenblas64_.so.0",
+    Windows(:i686, compiler_abi=CompilerABI(:gcc7)) => "libopenblas.dll",
+    MacOS(:x86_64, compiler_abi=CompilerABI(:gcc7)) => "libopenblas64_.dylib",
+    MacOS(:x86_64, compiler_abi=CompilerABI(:gcc8)) => "libopenblas64_.dylib",
+    Linux(:armv7l, libc=:glibc, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc8)) => "libopenblas.so.0",
+    Linux(:x86_64, libc=:glibc, compiler_abi=CompilerABI(:gcc7)) => "libopenblas64_.so.0",
+    Linux(:armv7l, libc=:musl, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc7)) => "libopenblas.so.0",
+    Linux(:armv7l, libc=:musl, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc8)) => "libopenblas.so.0",
+    Linux(:x86_64, libc=:glibc, compiler_abi=CompilerABI(:gcc8)) => "libopenblas64_.so.0",
+    FreeBSD(:x86_64, compiler_abi=CompilerABI(:gcc7)) => "libopenblas64_.so",
+    Linux(:x86_64, libc=:glibc, compiler_abi=CompilerABI(:gcc4)) => "libopenblas64_.so.0",
+    FreeBSD(:x86_64, compiler_abi=CompilerABI(:gcc8)) => "libopenblas64_.so",
+    Windows(:x86_64, compiler_abi=CompilerABI(:gcc4)) => "libopenblas64_.dll",
+    Windows(:x86_64, compiler_abi=CompilerABI(:gcc8)) => "libopenblas64_.dll",
+    Windows(:i686, compiler_abi=CompilerABI(:gcc4)) => "libopenblas.dll",
+    Linux(:x86_64, libc=:musl, compiler_abi=CompilerABI(:gcc8)) => "libopenblas64_.so.0",
+    MacOS(:x86_64, compiler_abi=CompilerABI(:gcc4)) => "libopenblas64_.dylib",
+    Linux(:i686, libc=:musl, compiler_abi=CompilerABI(:gcc7)) => "libopenblas.so.0",
+    Linux(:armv7l, libc=:glibc, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc7)) => "libopenblas.so.0",
+    Linux(:aarch64, libc=:musl, compiler_abi=CompilerABI(:gcc4)) => "libopenblas64_.so.0",
+    Linux(:powerpc64le, libc=:glibc, compiler_abi=CompilerABI(:gcc7)) => "libopenblas64_.so.0",
+    Linux(:i686, libc=:glibc, compiler_abi=CompilerABI(:gcc7)) => "libopenblas.so.0",
+    Linux(:aarch64, libc=:glibc, compiler_abi=CompilerABI(:gcc8)) => "libopenblas64_.so.0",
+    Linux(:armv7l, libc=:musl, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc4)) => "libopenblas.so.0",
+    Linux(:i686, libc=:glibc, compiler_abi=CompilerABI(:gcc4)) => "libopenblas.so.0",
+    Windows(:i686, compiler_abi=CompilerABI(:gcc8)) => "libopenblas.dll",
+    Linux(:aarch64, libc=:glibc, compiler_abi=CompilerABI(:gcc7)) => "libopenblas64_.so.0",
+    Linux(:armv7l, libc=:glibc, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc4)) => "libopenblas.so.0",
+    Linux(:powerpc64le, libc=:glibc, compiler_abi=CompilerABI(:gcc4)) => "libopenblas64_.so.0",
+    Linux(:aarch64, libc=:glibc, compiler_abi=CompilerABI(:gcc4)) => "libopenblas64_.so.0",
+    FreeBSD(:x86_64, compiler_abi=CompilerABI(:gcc4)) => "libopenblas64_.so",
+    Linux(:powerpc64le, libc=:glibc, compiler_abi=CompilerABI(:gcc8)) => "libopenblas64_.so.0",
+    Linux(:i686, libc=:glibc, compiler_abi=CompilerABI(:gcc8)) => "libopenblas.so.0",
+    Linux(:aarch64, libc=:musl, compiler_abi=CompilerABI(:gcc8)) => "libopenblas64_.so.0",
+    Linux(:x86_64, libc=:musl, compiler_abi=CompilerABI(:gcc7)) => "libopenblas64_.so.0",
+    Windows(:x86_64, compiler_abi=CompilerABI(:gcc7)) => "libopenblas64_.dll",
+    Linux(:i686, libc=:musl, compiler_abi=CompilerABI(:gcc4)) => "libopenblas.so.0",
+    Linux(:aarch64, libc=:musl, compiler_abi=CompilerABI(:gcc7)) => "libopenblas64_.so.0",
+)
+
 # Install unsatisfied or updated dependencies:
 unsatisfied = any(!satisfied(p; verbose=verbose) for p in products)
 dl_info = choose_download(download_info, platform_key_abi())
@@ -68,6 +115,27 @@ end
 if unsatisfied || !isinstalled(dl_info...; prefix=prefix)
     # Download and install binaries
     install(dl_info...; prefix=prefix, force=true, verbose=verbose)
+
+    # Distribution packagers love to rename their BLAS libraries, which is naturally
+    # incompatible with precompiled binaries.  We attempt to address this by automatically
+    # creating a symlink to the currently loaded BLAS library that is named what ARPACK is
+    # attempting to load.
+    blaslib = first(filter(x -> occursin(Base.libblas_name, x), dllist()))
+	default_blaslib_name = default_blaslib_names[platform_key_abi()]
+    if basename(blaslib) != default_blaslib_name
+        @warn(strip(replace('\n' => ' ',
+        """
+        This Julia installation uses a non-default BLAS library name (\"$(basename(blaslib))\"
+        instead of \"$(default_blaslib_name)\")!  This is likely due to using a distribution
+        package, and can cause problems when installing binary dependencies such as Arpack.jl.
+        We will attempt to automatically map the distribution-provided BLAS library to such
+        that libarpack can find it, but this may not work.  If issues with Arpack.jl persist,
+        we recommend using the Julia binaries available for download from the official website
+        at https://julialang.org/downloads.html
+        """)))
+        symlink(blaslib, joinpath(libdir(prefix), default_blaslib_name))
+    end
+
 end
 
 # Write out a deps.jl file that will contain mappings for our products

deps/get_default_blaslib_names.jl

@@ -0,0 +1,70 @@
+using BinaryProvider
+
+# Download binaries from hosted location
+bin_prefix = "https://github.com/JuliaLinearAlgebra/ArpackBuilder/releases/download/v3.5.0-3"
+
+# Listing of files generated by BinaryBuilder:
+download_info = Dict(
+    Linux(:aarch64, libc=:glibc, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.aarch64-linux-gnu-gcc4.tar.gz", "d19fd4f1aa62c189f93462cbe25d6765c2ad42f8762d6c374e9e4e916f573aba"),
+    Linux(:aarch64, libc=:glibc, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.aarch64-linux-gnu-gcc7.tar.gz", "66242daa33cfeeb2085ffb1c374e93642bca3f2a5dc61f864d214c041441d25d"),
+    Linux(:aarch64, libc=:glibc, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.aarch64-linux-gnu-gcc8.tar.gz", "33245806067e5f96f4ad0b5070b52296e0f92b474fbfc9e4c0790253013ff127"),
+    Linux(:aarch64, libc=:musl, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.aarch64-linux-musl-gcc4.tar.gz", "f8858dd20c7fd83dca71616be8adf1b2e3e86a7ece7e3ec52e05867da2290364"),
+    Linux(:aarch64, libc=:musl, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.aarch64-linux-musl-gcc7.tar.gz", "a23b510a9fe2a78469c8d942f498ff1729bd9d7da9ceafda8318acf6a0057da0"),
+    Linux(:aarch64, libc=:musl, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.aarch64-linux-musl-gcc8.tar.gz", "75f08c85072c4ae6d2d004efb99a6f9202e139746b120fa59e9c82fcdc207427"),
+    Linux(:armv7l, libc=:glibc, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.arm-linux-gnueabihf-gcc4.tar.gz", "d0601f37d571dff33f810aa3c2ba724c4cd163c17cbc57eb001057992cf01973"),
+    Linux(:armv7l, libc=:glibc, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.arm-linux-gnueabihf-gcc7.tar.gz", "c366fe80bdb3f705ebb5ddbd25267376e34085633931441ff50e0f0793c53dd5"),
+    Linux(:armv7l, libc=:glibc, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.arm-linux-gnueabihf-gcc8.tar.gz", "ea83ae4112c39cfec4fc317520827d0a89c61dfe01d1ecbf21b7349aa135035a"),
+    Linux(:armv7l, libc=:musl, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.arm-linux-musleabihf-gcc4.tar.gz", "164150c704b4db50662987a05e23d0581e72157ca56cc9389a68ebfd242baef9"),
+    Linux(:armv7l, libc=:musl, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.arm-linux-musleabihf-gcc7.tar.gz", "5b83bf6dac70d9ad492d69a4ca08a6b2efa0e80ddd59b4c44ec0db6169a01384"),
+    Linux(:armv7l, libc=:musl, call_abi=:eabihf, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.arm-linux-musleabihf-gcc8.tar.gz", "398d5b42ae1a631264f680c7133e27ff17396e5a7cf9a4830b54e3f88b06052f"),
+    Linux(:i686, libc=:glibc, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.i686-linux-gnu-gcc4.tar.gz", "624c7b4e9ff830c8ebd88ead20250f02b9a2cbcd78b83b2e350d1d53abb3bdc3"),
+    Linux(:i686, libc=:glibc, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.i686-linux-gnu-gcc7.tar.gz", "be5022190cb3365e5e3e43354c13c6adb245f4529d18b97b4efd6dea5fdb36e8"),
+    Linux(:i686, libc=:glibc, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.i686-linux-gnu-gcc8.tar.gz", "b110c5ccb564f0617efb57cefbd46459a4830fbaa390f225167561b73b694081"),
+    Linux(:i686, libc=:musl, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.i686-linux-musl-gcc4.tar.gz", "8835f810f27661813e1fdb0fa02540215b02b5a6205a45dad6d02d00de82ca4c"),
+    Linux(:i686, libc=:musl, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.i686-linux-musl-gcc7.tar.gz", "9e3d16c23eb539f2345d5ebc7dc5df2a8a3236ae02492d13de50e3759cbbb6be"),
+    Linux(:i686, libc=:musl, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.i686-linux-musl-gcc8.tar.gz", "4db9a56c70c4cd5d55101c13250e800476b9cd6160a53249821cb00618b00b34"),
+    Windows(:i686, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.i686-w64-mingw32-gcc4.tar.gz", "0a6b238b843491fa2dd783ddcc440d82f4d295ab33f91ce1a0c80835fa7805e2"),
+    Windows(:i686, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.i686-w64-mingw32-gcc7.tar.gz", "17471e4289c7393e499ca3066e32f1a8776d1aad1fa994c9ec4398275be6e3cd"),
+    Windows(:i686, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.i686-w64-mingw32-gcc8.tar.gz", "c2da0cc187bdca8edee8bc3528c29f80c8a70eef165b449bcefe62b9affe51c5"),
+    Linux(:powerpc64le, libc=:glibc, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.powerpc64le-linux-gnu-gcc4.tar.gz", "dbb601c9c34d27fdbd74829874620e3dcf325bb05a3584d1be22b45bae3c1376"),
+    Linux(:powerpc64le, libc=:glibc, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.powerpc64le-linux-gnu-gcc7.tar.gz", "762601ab49f9d5ca5702968f167ce1a04b14ba8dc02d6a61bf7650c006c5bb42"),
+    Linux(:powerpc64le, libc=:glibc, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.powerpc64le-linux-gnu-gcc8.tar.gz", "efc2337f3a911377cf018d1827d9cd65f2314e1a81e000f92cb21b8b7fd6aa57"),
+    MacOS(:x86_64, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-apple-darwin14-gcc4.tar.gz", "7ef977fd7214bbb96b57eb852da6e9227a89ea168403a23d0feb1602e77ade43"),
+    MacOS(:x86_64, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-apple-darwin14-gcc7.tar.gz", "282bc463663328dd7f613b43b84459a7b87f59e61ceff780e8a606026613b67f"),
+    MacOS(:x86_64, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-apple-darwin14-gcc8.tar.gz", "78295ca3721b22db9e76760676a7157c13ec3125e276c7da571a0d5fc5858929"),
+    Linux(:x86_64, libc=:glibc, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-linux-gnu-gcc4.tar.gz", "137a1617ff1c9bb64080fa0a36103294c2670568a00ae6a953307fb0625cdb46"),
+    Linux(:x86_64, libc=:glibc, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-linux-gnu-gcc7.tar.gz", "35e2f96333bfde0fb1749bf2f7d9a84fa8dfac6119d60a84a6b274d42dd85037"),
+    Linux(:x86_64, libc=:glibc, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-linux-gnu-gcc8.tar.gz", "11ae0abf2e42fa19364391bd9994c321aceb6604b204a62b062766f68ff7ef60"),
+    Linux(:x86_64, libc=:musl, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-linux-musl-gcc4.tar.gz", "0a01691c184c6251521a54d24d8095210fa79d6ea4cc5d6777e4b45d1d4390e7"),
+    Linux(:x86_64, libc=:musl, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-linux-musl-gcc7.tar.gz", "a40c92a2799b42605e0ccb17806b66bb1e1c848934a6d7fb7498df4aeaa29d9d"),
+    Linux(:x86_64, libc=:musl, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-linux-musl-gcc8.tar.gz", "235e3816d930ef1552456586cb93cff798ee240f05561a42ac9e79eb0dc84a9a"),
+    FreeBSD(:x86_64, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-unknown-freebsd11.1-gcc4.tar.gz", "8b0f3e6219c5fdcd58a5b0c7bfac6141b613c5846f0536e6d621b312d88204ee"),
+    FreeBSD(:x86_64, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-unknown-freebsd11.1-gcc7.tar.gz", "f69db95295c172cd4281339f9727f1abc4491171ef0f08632000ad87f9d90cf3"),
+    FreeBSD(:x86_64, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-unknown-freebsd11.1-gcc8.tar.gz", "f8ea43eb0624f77ab18582cea9e21dbab6981320b14625eaf461b152be4ea1b9"),
+    Windows(:x86_64, compiler_abi=CompilerABI(:gcc4)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-w64-mingw32-gcc4.tar.gz", "017832f856354f156910bfd9db9c04671863d1ea1c761435917fff3e5863c0b8"),
+    Windows(:x86_64, compiler_abi=CompilerABI(:gcc7)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-w64-mingw32-gcc7.tar.gz", "28beddf5a3e178012f910e406897d2abdf70ff3373c4b946ac39eae61070d042"),
+    Windows(:x86_64, compiler_abi=CompilerABI(:gcc8)) => ("$bin_prefix/Arpack.v3.5.0-3.x86_64-w64-mingw32-gcc8.tar.gz", "1fc0035e5bd62448243f8ed09041dee6a2480ea23e648c47b9d56d1f467a0ca0"),
+)
+
+try
+    mkdir("downloads")
+catch
+end
+
+# Download them all!
+for key in keys(download_info)
+    download_verify_unpack(download_info[key][1], download_info[key][2], joinpath(@__DIR__, triplet(key)); tarball_path=joinpath(@__DIR__, "downloads", triplet(key)*".tar.gz"), verbose=true)
+end
+
+# Get linkage name of openblas for everybody
+using ObjectFile
+println("default_blaslib_names = Dict(")
+for p in keys(download_info)
+    libarpack = LibraryProduct(Prefix(joinpath(@__DIR__, triplet(p))), "libarpack", :libarpack)
+    libarpack_path = locate(libarpack; platform=p)
+    blas_name = readmeta(libarpack_path) do oh
+        blaslibs = filter(x -> occursin("blas", x), [path(l) for l in DynamicLinks(oh)])
+        println("    $(repr(p)) => $(repr(basename(first(blaslibs)))),")
+    end
+end
+println(")")