Preliminary support for M1 builds

NOTE: I don't have an M1 Mac, so the only testing I can do is with
a non-`/usr/local` Intel Homebrew installation. This should take
care of "`cc` shim forbids `/usr/local` if Homebrew not installed
under `/usr/local`", which is the default setup for M1 Homebrew.

Formula/afuse-mac.rb

@@ -19,6 +19,7 @@ class AfuseMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}"
     system "make", "install"
   end

Formula/archivemount-mac.rb

@@ -19,6 +19,7 @@ class ArchivemountMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     ENV.append_to_cflags "-I/usr/local/include/osxfuse"
     system "./configure", "--disable-debug",
                           "--disable-dependency-tracking",

Formula/avfs-mac.rb

@@ -20,6 +20,7 @@ class AvfsMac < Formula
   depends_on "xz"
 
   def install
+    setup_fuse
     args = %W[
       --prefix=#{prefix}
       --disable-debug

Formula/bindfs-mac.rb

@@ -26,6 +26,7 @@ class BindfsMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     args = %W[
       --disable-debug
       --disable-dependency-tracking

Formula/btfs-mac.rb

@@ -23,6 +23,7 @@ class BtfsMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     ENV.cxx11
     inreplace "configure.ac", "fuse >= 2.8.0", "fuse >= 2.7.3"
     system "autoreconf", "--force", "--install"

Formula/curlftpfs-mac.rb

@@ -25,6 +25,7 @@ class CurlftpfsMac < Formula
   # TODO: depend on specific X11 formulae instead
 
   def install
+    setup_fuse
     ENV.append "CPPFLAGS", "-D__off_t=off_t"
     system "autoreconf", "-fvi"
     system "./configure", "--disable-dependency-tracking",

Formula/dislocker-mac.rb

@@ -23,7 +23,8 @@ class DislockerMac < Formula
   patch :DATA
 
   def install
-    system "cmake", "-DCMAKE_DISABLE_FIND_PACKAGE_Ruby=TRUE", *std_cmake_args
+    setup_fuse
+    system "cmake", "-DCMAKE_DISABLE_FIND_PACKAGE_Ruby=TRUE", *fuse_cmake_args, *std_cmake_args
     system "make"
     system "make", "install"
   end

Formula/encfs-mac.rb

@@ -25,10 +25,11 @@ class EncfsMac < Formula
   depends_on "openssl@1.1"
 
   def install
+    setup_fuse
     ENV.cxx11
 
     mkdir "build" do
-      system "cmake", "..", *std_cmake_args
+      system "cmake", "..", *fuse_cmake_args, *std_cmake_args
       system "make", "install"
     end
   end

Formula/ext2fuse-mac.rb

@@ -19,6 +19,7 @@ class Ext2fuseMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     ENV.append "LIBS", "-lfuse"
     ENV.append "CFLAGS",
       "-D__FreeBSD__=10 -DENABLE_SWAPFS -I/usr/local/include/fuse "

Formula/ext4fuse-mac.rb

@@ -20,6 +20,7 @@ class Ext4fuseMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     system "make"
     bin.install "ext4fuse"
   end

Formula/fuse-zip-mac.rb

@@ -21,7 +21,8 @@ class FuseZipMac < Formula
   depends_on :macos
 
   def install
-    system "make", "prefix=#{prefix}", "install"
+    setup_fuse
+    system "make", "prefix=#{prefix}", "PKG_CONFIG=#{fuse_pkgconfig}", "install"
   end
 
   test do

Formula/gcsfuse-mac.rb

@@ -20,6 +20,7 @@ class GcsfuseMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     # Build the build_gcsfuse tool. Ensure that it doesn't pick up any
     # libraries from the user's GOPATH; it should have no dependencies.
     ENV.delete("GOPATH")

Formula/gocryptfs-mac.rb

@@ -24,6 +24,7 @@ class GocryptfsMac < Formula
   patch :DATA
 
   def install
+    setup_fuse
     ENV["GOPATH"] = buildpath
     (buildpath/"src/github.com/rfjakob/gocryptfs").install buildpath.children
     cd "src/github.com/rfjakob/gocryptfs" do

Formula/goofys-mac.rb

@@ -21,6 +21,7 @@ class GoofysMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     contents = Dir["*"]
     gopath = buildpath/"gopath"
     (gopath/"src/github.com/kahing/goofys").install contents

Formula/ifuse-mac.rb

@@ -26,6 +26,7 @@ class IfuseMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     system "./autogen.sh"
     system "./configure", "--disable-dependency-tracking",
                           "--prefix=#{prefix}"

Formula/mp3fs-mac.rb

@@ -25,6 +25,7 @@ class Mp3fsMac < Formula
   patch :DATA
 
   def install
+    setup_fuse
     system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}"
     system "make", "install"
   end

Formula/rclone-mac.rb

@@ -13,6 +13,7 @@ class RcloneMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     system "go", "build",
       "-ldflags", "-s -X github.com/rclone/rclone/fs.Version=v#{version}",
       "-tags", "cmount", *std_go_args

Formula/rofs-filtered-mac.rb

@@ -19,8 +19,9 @@ class RofsFilteredMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     mkdir "build" do
-      system "cmake", "..", "-DCMAKE_INSTALL_SYSCONFDIR=#{etc}", *std_cmake_args
+      system "cmake", "..", "-DCMAKE_INSTALL_SYSCONFDIR=#{etc}", *fuse_cmake_args, *std_cmake_args
       system "make", "install"
     end
   end

Formula/s3-backer-mac.rb

@@ -20,6 +20,7 @@ class S3BackerMac < Formula
   depends_on "openssl@1.1"
 
   def install
+    setup_fuse
     system "./configure", "--prefix=#{prefix}"
     system "make", "install"
   end

Formula/s3fs-mac.rb

@@ -25,6 +25,7 @@ class S3fsMac < Formula
   depends_on "nettle"
 
   def install
+    setup_fuse
     system "./autogen.sh"
     system "./configure", "--disable-dependency-tracking", "--with-gnutls", "--prefix=#{prefix}"
     system "make", "install"

Formula/s3ql-mac.rb

@@ -130,6 +130,7 @@ class S3qlMac < Formula
   end
 
   def install
+    setup_fuse
     venv = virtualenv_create(libexec, "python3")
     resources.each do |r|
       venv.pip_install r

Formula/securefs-mac.rb

@@ -23,7 +23,8 @@ class SecurefsMac < Formula
   patch :DATA
 
   def install
-    system "cmake", ".", *std_cmake_args
+    setup_fuse
+    system "cmake", ".", *fuse_cmake_args, *std_cmake_args
     system "make", "install"
   end
 

Formula/simple-mtpfs-mac.rb

@@ -25,6 +25,7 @@ class SimpleMtpfsMac < Formula
   patch :DATA
 
   def install
+    setup_fuse
     system "./autogen.sh"
     system "./configure", "--prefix=#{prefix}"
     system "make"

Formula/squashfuse-mac.rb

@@ -24,6 +24,7 @@ class SquashfuseMac < Formula
   depends_on "zstd"
 
   def install
+    setup_fuse
     system "./configure", "--disable-dependency-tracking",
                           "--disable-silent-rules",
                           "--prefix=#{prefix}"

Formula/sshfs-mac.rb

@@ -31,6 +31,7 @@ class SshfsMac < Formula
   patch :DATA
 
   def install
+    setup_fuse
     system "autoreconf", "-fiv"
     system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}"
     system "make", "install"

Formula/tup-mac.rb

@@ -20,6 +20,7 @@ class TupMac < Formula
   depends_on :macos
 
   def install
+    setup_fuse
     ENV["TUP_LABEL"] = version
     system "./build.sh"
     bin.install "build/tup"

Formula/wdfs-mac.rb

@@ -21,6 +21,7 @@ class WdfsMac < Formula
   depends_on "neon"
 
   def install
+    setup_fuse
     system "./configure", "--disable-debug", "--disable-dependency-tracking",
                           "--prefix=#{prefix}"
     system "make", "install"

Formula/xmount-mac.rb

@@ -25,9 +25,10 @@ class XmountMac < Formula
   patch :DATA
 
   def install
+    setup_fuse
     ENV.prepend_path "PKG_CONFIG_PATH", Formula["openssl@1.1"].opt_lib/"pkgconfig"
 
-    system "cmake", ".", *std_cmake_args
+    system "cmake", ".", *fuse_cmake_args, *std_cmake_args
     system "make", "install"
   end
 

require/macfuse.rb

@@ -23,35 +23,79 @@ end
 
 # Add `setup_fuse` to base Formula class, for use by FUSE formulae
 class Formula
+  def need_alt_fuse?
+    HOMEBREW_PREFIX.to_s != "/usr/local"
+  end
+
+  def alt_fuse_root
+    buildpath/"temp"
+  end
+
+  def fuse_cmake_args
+    return unless need_alt_fuse?
+
+    %W[
+      -DCMAKE_INCLUDE_PATH=#{alt_fuse_root}/include/fuse;#{alt_fuse_root}/include
+      -DCMAKE_LIBRARY_PATH=#{alt_fuse_root}/lib
+      -DCMAKE_CXX_FLAGS=-I#{alt_fuse_root}/include/fuse\ -D_USE_FILE_OFFSET_BITS=64
+      -DPKG_CONFIG=#{fuse_pkgconfig}
+      -DPKG_CONFIG_EXECUTABLE=#{fuse_pkgconfig}
+    ]
+    # -DFUSE_INCLUDE_DIR=#{alt_fuse_root}/include/fuse
+    # -DFUSE_LIBRARIES=#{alt_fuse_root}/lib/libfuse.dylib
+  end
+
   def setup_fuse_includes
-    mkdir buildpath/"temp/include" do
+    mkdir "#{alt_fuse_root}/include" do
       Dir["/usr/local/include/fuse*"].each { |f| cp_r f, "." }
     end
   end
 
   def setup_fuse_libs
-    mkdir buildpath/"temp/lib" do
+    mkdir "#{alt_fuse_root}/lib" do
       Dir["/usr/local/lib/*fuse*"].each { |f| cp_r f, "." }
     end
   end
 
+  def setup_fuse_pkgconfig
+    mkdir "#{alt_fuse_root}/bin" do
+      cp path/"../../lib/fuse-pkg-config", "."
+      inreplace "fuse-pkg-config", "%FUSE_ROOT%", "#{alt_fuse_root}"
+      #ENV.prepend_path "PATH", "#{alt_fuse_root}/bin"
+    end
+  end
+
+  def fuse_pkgconfig
+    return "#{alt_fuse_root}/bin/fuse-pkg-config" if need_alt_fuse?
+    "pkg-config"
+  end
+
   def setup_fuse_env
-    odebug "Setting up FUSE temp environment under #{buildpath}/temp"
+    odebug "Setting up FUSE temp environment under #{alt_fuse_root}"
     setup_fuse_includes
     setup_fuse_libs
-    Dir.glob(buildpath/"temp/**/*.*").each { |f| odebug ">>> #{f}" }
+    setup_fuse_pkgconfig
+    Dir.glob("#{alt_fuse_root}/**/*").each { |f| odebug ">>> #{f}" }
   end
 
   def setup_fuse_flags
-    ENV.append "CFLAGS", "-I#{buildpath}/temp/include"
-    ENV.append "CFLAGS", "-I#{buildpath}/temp/include/fuse"
-    ENV.append "CPPFLAGS", "-I#{buildpath}/temp/include"
-    ENV.append "CPPFLAGS", "-I#{buildpath}/temp/include/fuse"
-    ENV.append "LDFLAGS", "-I#{buildpath}/temp/lib"
+    ENV.append "CFLAGS", "-I#{alt_fuse_root}/include"
+    ENV.append "CFLAGS", "-I#{alt_fuse_root}/include/fuse"
+    ENV.append "CFLAGS", "-D_USE_FILE_OFFSET_BITS=64"
+    ENV.append "CPPFLAGS", "-I#{alt_fuse_root}/include"
+    ENV.append "CPPFLAGS", "-I#{alt_fuse_root}/include/fuse"
+    ENV.append "CPPFLAGS", "-D_USE_FILE_OFFSET_BITS=64"
+    ENV.append "CXXFLAGS", "-I#{alt_fuse_root}/include"
+    ENV.append "CXXFLAGS", "-I#{alt_fuse_root}/include/fuse"
+    ENV.append "CXXFLAGS", "-D_USE_FILE_OFFSET_BITS=64"
+    ENV.append "LDFLAGS", "-L#{alt_fuse_root}/lib"
+    ENV.append "CGO_CPPFLAGS", "-I#{alt_fuse_root}/include"
+    ENV.append "CGO_CPPFLAGS", "-D_USE_FILE_OFFSET_BITS=64"
+    ENV.append "CGO_LDFLAGS", "-L#{alt_fuse_root}/lib"
   end
 
   def setup_fuse
-    return if HOMEBREW_PREFIX.to_s == "/usr/local"
+    return unless need_alt_fuse?
 
     setup_fuse_env
     setup_fuse_flags