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+# Various Notes on Building
+
+## Webkit
+
+Let’s compile a release with debug info and install to /usr/local
+
+~~~~~~ {.bash}
+wget https://webkitgtk.org/releases/webkitgtk-2.20.0.tar.xz
+tar -xvf webkitgtk-2.20.0.tar.xz
+cd webkitgtk-2.20.0
+# install all the libs that will be reported missing in the next step.
+# I could not find the woff2 stuff in debian so skipped it... 
+cmake -DPORT=GTK -DCMAKE_BUILD_TYPE=RelWithDebInfo -DUSE_WOFF2=NO -GNinja
+# this takes about 30minutes on my i7-4790K .. zzzzz..zzz
+ninja
+sudo ninja install
+~~~~~~~~~~~
+
+    pkg-config
+
+    pkg-config uses our new build now:
+
+    [1] https://trac.webkit.org/wiki/BuildingGtk
+    [2] https://webkitgtk.org/
+
+## GCC
+
+This is how I build gcc (5.2.0) and binutils (2.25.1). Check [5] first.
+
+* unpack binutils-x.y.z
+* create a new directory binutils-x.y.z-build and inside it run the following commands:
+
+~~~~~~ {.bash}
+    $ ../binutils-x.y.z/configure --disable-nls --with-sysroot --enable-targets=all
+    $ make -j4
+    $ make install
+~~~~~~~~~~~~
+
+* unpack gcc-x.y.z and run the contrib/download_prerequisites script inside.
+* create a new directory: gcc-x.y.z-build and inside it run:
+    
+~~~~~~ {.bash}
+    $ ../gcc-x.y.z/configure --disable-nls --enable-languages=c,c++ --enable-threads
+    $ make -j4
+    $ make install
+~~~~~~~~~~~~
+
+    REF:
+
+    [1] binutils and gcc README files.
+    [2] https://gcc.gnu.org/install/
+    [3] http://wiki.osdev.org/Building_GCC
+    [4] http://stackoverflow.com/questions/1726042/recipe-for-compiling-binutils-gcc-together
+    [5] https://gcc.gnu.org/install/prerequisites.html
+
+## Linux
+
+    cd linux-source-[xxx]
+    make mrproper
+    cp someconfig .config -i
+    make oldconfig
+    make menuconfig
+    make localmodconfig
+    make localyesconfig
+    make
+    (OPT) make modules
+    su
+    make install
+    (OPT) make modules_install
+    (OPT) update-intiramfs -c -k [kernel-postfix]
+
+    (REMOVE UNWANTED FILES FROM BOOT!)
+    update-grub
+    grub-install /dev/sda
+    reboot
+
+
+## Clang
+
+    http://llvm.org/releases/3.7.0/docs/CMake.html
+    http://clang.llvm.org/get_started.html
+    put MAKEFLAGS="-j8" or similar in front of your CMake invocations.
+
+    extracted llvm to ~/temp/clang/llvm-3.7.0.src/
+    extracted clang to ~/temp/clang/llvm-3.7.0.src/tools/clang/ 
+    extracted compiler-rt to ~/temp/clang/llvm-3.7.0.src/projects/compiler-rt 
+    extracted libcxx to ~/temp/clang/llvm-3.7.0.src/projects/libcxx
+
+    $ cd ~/temp/clang/llvm-3.7.0-build
+    $ cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/home/miguel/opt/llvm-3.7.0 ../llvm-3.7.0.src
+    $ cmake --build .
+    $ cmake --build . --target install
+