add option to build from source on macOS and Linux

Author: MikaelSlevinsky

deps/build.jl

@@ -1,35 +1,70 @@
 using BinaryProvider
 
-if Sys.isapple()
-    run(`brew update`)
-    run(`brew install gcc@8 fftw mpfr`)
-    const libfasttransforms = joinpath(dirname(@__DIR__), "deps", "libfasttransforms.dylib")
-    GCC = BinaryProvider.detect_compiler_abi().gcc_version
-    println("Building with ", GCC, ".")
-    const release = "https://github.com/MikaelSlevinsky/FastTransforms/releases/download/v0.2.7/libfasttransforms.v0.2.7"
-    if GCC == :gcc4
-        download(release*".gcc-4.9.dylib", libfasttransforms)
-    elseif GCC == :gcc5
-        download(release*".gcc-5.dylib", libfasttransforms)
-    elseif GCC == :gcc6
-        download(release*".gcc-6.dylib", libfasttransforms)
-    elseif GCC == :gcc7
-        download(release*".gcc-7.dylib", libfasttransforms)
-    elseif GCC == :gcc8
-        download(release*".gcc-8.dylib", libfasttransforms)
-    elseif GCC == :gcc9
-        download(release*".gcc-9.dylib", libfasttransforms)
+if arch(platform_key_abi()) != :x86_64
+    @warn "FastTransforms has only been tested on x86_64 architectures."
+end
+
+ft_build_from_source = get(ENV, "FT_BUILD_FROM_SOURCE", "false")
+
+if ft_build_from_source == "true"
+    println("Building from source.")
+    if Sys.isapple()
+        script = raw"""
+        brew update
+        brew install gcc@8 fftw mpfr
+        rm -rf FastTransforms
+        git clone -b v0.2.7 https://github.com/MikaelSlevinsky/FastTransforms.git FastTransforms
+        cd FastTransforms
+        make lib CC=gcc-8 FT_USE_APPLEBLAS=1
+        cd ..
+        ln -sf FastTransforms/libfasttransforms.dylib libfasttransforms.dylib
+        """
+        run(`/bin/bash -c $(script)`)
+    elseif Sys.islinux()
+        script = raw"""
+        sudo apt-get update
+        sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+        sudo apt-get install gcc-8 libblas-dev libopenblas-base libfftw3-dev libmpfr-dev
+        rm -rf FastTransforms
+        git clone -b v0.2.7 https://github.com/MikaelSlevinsky/FastTransforms.git FastTransforms
+        cd FastTransforms
+        make lib CC=gcc-8
+        cd ..
+        ln -sf FastTransforms/libfasttransforms.so libfasttransforms.so
+        """
+        run(`/bin/bash -c $(script)`)
     else
-        @warn "Please ensure you have a version of gcc from gcc-4.9 to gcc-9."
+        @warn "FastTransforms could not be built from source with the current build.jl script. Have you considered filing an issue? https://github.com/JuliaApproximation/FastTransforms.jl/issues"
     end
-elseif Sys.islinux()
-    run(`sudo add-apt-repository ppa:ubuntu-toolchain-r/test`)
-    run(`sudo apt-get update`)
-    run(`sudo apt-get install gcc-8 libblas-dev libopenblas-base libfftw3-dev libmpfr-dev`)
-    const libfasttransforms = joinpath(dirname(@__DIR__), "deps", "libfasttransforms.so")
-    if arch(platform_key_abi()) != :x86_64
-        @warn "FastTransforms only has compiled binaries for x86_64 architectures."
-    else
+else
+    println("Installing by downloading binaries.")
+    if Sys.isapple()
+        run(`brew update`)
+        run(`brew install gcc@8 fftw mpfr`)
+        const libfasttransforms = joinpath(dirname(@__DIR__), "deps", "libfasttransforms.dylib")
+        GCC = BinaryProvider.detect_compiler_abi().gcc_version
+        println("Building with ", GCC, ".")
+        const release = "https://github.com/MikaelSlevinsky/FastTransforms/releases/download/v0.2.7/libfasttransforms.v0.2.7"
+        if GCC == :gcc4
+            download(release*".gcc-4.9.dylib", libfasttransforms)
+        elseif GCC == :gcc5
+            download(release*".gcc-5.dylib", libfasttransforms)
+        elseif GCC == :gcc6
+            download(release*".gcc-6.dylib", libfasttransforms)
+        elseif GCC == :gcc7
+            download(release*".gcc-7.dylib", libfasttransforms)
+        elseif GCC == :gcc8
+            download(release*".gcc-8.dylib", libfasttransforms)
+        elseif GCC == :gcc9
+            download(release*".gcc-9.dylib", libfasttransforms)
+        else
+            @warn "Please ensure you have a version of gcc from gcc-4.9 to gcc-9."
+        end
+    elseif Sys.islinux()
+        run(`sudo add-apt-repository ppa:ubuntu-toolchain-r/test`)
+        run(`sudo apt-get update`)
+        run(`sudo apt-get install gcc-8 libblas-dev libopenblas-base libfftw3-dev libmpfr-dev`)
+        const libfasttransforms = joinpath(dirname(@__DIR__), "deps", "libfasttransforms.so")
         GCC = BinaryProvider.detect_compiler_abi().gcc_version
         println("Building with ", GCC, ".")
         const release = "https://github.com/MikaelSlevinsky/FastTransforms/releases/download/v0.2.7/libfasttransforms.v0.2.7"
@@ -48,7 +83,7 @@ elseif Sys.islinux()
         else
             @warn "Please ensure you have a version of gcc from gcc-4.9 to gcc-9."
         end
+    else
+        @warn "FastTransforms could not be installed by downloading binaries. Have you tried building from source?"
     end
-else
-    @warn "FastTransforms is not properly installed."
 end

src/libfasttransforms.jl

@@ -17,7 +17,7 @@ const libfasttransforms = joinpath(dirname(@__DIR__), "deps", "libfasttransforms
 
 if !(find_library(libfasttransforms) ≡ libfasttransforms)
     error("FastTransforms is not properly installed. Please run Pkg.build(\"FastTransforms\") ",
-          "and restart Julia. You may need to manually build if the package is in development mode.")
+          "and restart Julia.")
 end
 
 function ft_fftw_plan_with_nthreads(n::Integer)