Merge pull request #1317 from tehnick/gcc6-plugin

Add gcc6 plugin

3 files changed, 93 insertions, 0 deletions

diff --git a/plugins/gcc5/gcc5-overlay.mk b/plugins/gcc5/gcc5-overlay.mk
index 3da3171..894952b 100644
--- a/plugins/gcc5/gcc5-overlay.mk
+++ b/plugins/gcc5/gcc5-overlay.mk
@@ -16,6 +16,7 @@ $(PKG)_CHECKSUM := 8ceebbf4d9a81afa2b4449113cee4b7cb14a687d7a549a963deb5e2a41458
 $(PKG)_SUBDIR   := $(PKG)-$($(PKG)_VERSION)
 $(PKG)_FILE     := $(PKG)-$($(PKG)_VERSION).tar.bz2
 $(PKG)_URL      := http://isl.gforge.inria.fr/$($(PKG)_FILE)
+$(PKG)_URL_2    := ftp://gcc.gnu.org/pub/gcc/infrastructure/$($(PKG)_FILE)
 
 PKG             := gcc
 $(PKG)_VERSION  := 5.3.0
diff --git a/plugins/gcc6/README.md b/plugins/gcc6/README.md
new file mode 100644
index 0000000..9cbd7cd
--- /dev/null
+++ b/plugins/gcc6/README.md
@@ -0,0 +1,67 @@
+# Notes about GCC version 6.1.0 and later
+
+GCC 6.1 is released with a number of major changes
+[[1](https://gcc.gnu.org/ml/gcc-announce/2016/msg00000.html)]
+[[2](https://gcc.gnu.org/gcc-6/changes.html)]
+. The most notable change is:
+> The `C++` frontend now defaults to `C++14` standard instead of `C++98` it has
+> been defaulting to previously, for compiling older `C++` code that might
+> require either explicitly compiling with selected older `C++` standards,
+> or might require some code adjustment, see
+> [[3](http://gcc.gnu.org/gcc-6/porting_to.html)]
+> for details.
+
+So it is expected that some of MXE packages will fails to build from source
+(FTBFS) with default GCC 6.x options. As a workaround we may add `-std=gnu++11`
+or `-std=gnu++98` into `CXXFLAGS` for building problematic packages. And this
+will not affect the builds with older versions of GCC.
+
+For example, in autotools based projects:
+```
+...
+$(PKG)_CXXFLAGS := -std=gnu++11
+...
+    cd '$(1)' && \
+    CXXFLAGS="$($(PKG)_CXXFLAGS)" \
+    ./configure \
+...
+```
+
+Just after adding this plugin (gcc6) some packages were FTBFS. For now, these
+packages might be already fixed by upstream developers, by additional patches
+or using above mentioned workaround. See the table below for details. If some
+MXE packages or your personal projects are still FTBFS you may look how other
+packages were fixed and use similar approach.
+
+| package            | target               | fixed in commit                                      |
+| ------------------ | -------------------- | ---------------------------------------------------- |
+| boost              | all                  | [7ca2bce](https://github.com/mxe/mxe/commit/7ca2bce) |
+| cgal               | all                  | -                                                    |
+| dcmtk              | all                  | -                                                    |
+| fdk-aac            | all                  | -                                                    |
+| flann              | all                  | -                                                    |
+| freeimage          | all                  | -                                                    |
+| glib               | all                  | [58c2c96](https://github.com/mxe/mxe/commit/58c2c96) |
+| gtkimageview       | all                  | -                                                    |
+| gtkmm2             | all                  | -                                                    |
+| gtkmm3             | all                  | -                                                    |
+| itk                | all                  | -                                                    |
+| jsoncpp            | all                  | [0bc73f7](https://github.com/mxe/mxe/commit/0bc73f7) |
+| json_spirit        | all                  | -                                                    |
+| libical            | all                  | -                                                    |
+| librsvg            | all                  | -                                                    |
+| libxml++           | all                  | -                                                    |
+| log4cxx            | all                  | -                                                    |
+| opencv             | all                  | -                                                    |
+| ossim              | all                  | -                                                    |
+| qt                 | all                  | [5aac1c3](https://github.com/mxe/mxe/commit/5aac1c3) |
+| qt3d               | all                  | -                                                    |
+| sdl_sound          | all                  | -                                                    |
+| smpeg              | all                  | [57cb6bb](https://github.com/mxe/mxe/commit/57cb6bb) |
+| smpeg2             | all                  | [1a42cbc](https://github.com/mxe/mxe/commit/1a42cbc) |
+| ucl                | all                  | -                                                    |
+| vtk                | all                  | -                                                    |
+| vtk6               | all                  | -                                                    |
+| wxwidgets          | all                  | -                                                    |
+| ...                | ...                  | ...                                                  |
+
diff --git a/plugins/gcc6/gcc6-overlay.mk b/plugins/gcc6/gcc6-overlay.mk
new file mode 100644
index 0000000..5ca9207
--- /dev/null
+++ b/plugins/gcc6/gcc6-overlay.mk
@@ -0,0 +1,25 @@
+# This file is part of MXE.
+# See index.html for further information.
+
+# override relevant cloog, isl, and gcc variables changed in:
+# https://github.com/mxe/mxe/pull/965
+#
+# simply expanded variables (*_SUBDIR, *_FILE, etc.) need to be set
+
+PKG             := cloog
+$(PKG)_TARGETS  := $(MXE_TARGETS)
+
+PKG             := isl
+$(PKG)_VERSION  := 0.16.1
+$(PKG)_CHECKSUM := 412538bb65c799ac98e17e8cfcdacbb257a57362acfaaff254b0fcae970126d2
+$(PKG)_SUBDIR   := $(PKG)-$($(PKG)_VERSION)
+$(PKG)_FILE     := $(PKG)-$($(PKG)_VERSION).tar.bz2
+$(PKG)_URL      := http://isl.gforge.inria.fr/$($(PKG)_FILE)
+$(PKG)_URL_2    := ftp://gcc.gnu.org/pub/gcc/infrastructure/$($(PKG)_FILE)
+
+PKG             := gcc
+$(PKG)_VERSION  := 6.1.0
+$(PKG)_CHECKSUM := 09c4c85cabebb971b1de732a0219609f93fc0af5f86f6e437fd8d7f832f1a351
+$(PKG)_SUBDIR   := gcc-$($(PKG)_VERSION)
+$(PKG)_FILE     := gcc-$($(PKG)_VERSION).tar.bz2
+$(PKG)_URL      := http://ftp.gnu.org/pub/gnu/gcc/gcc-$($(PKG)_VERSION)/$($(PKG)_FILE)