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An overview of steps required to switch to a new GCC version. This is
a complete toolchain bring up.
1. Get the MinGW-W64 GCC build of this version and get configuration
flags (gcc -v). The idea is to build both the cross-compiler
and the native compiler (with linked-in ODB plugin) as close
to the MinGW-W64 configuration as possible.
2. Build cross-binutils:
1. Move old cross/mingw to cross/mingw-X.Y.Z.
2. Unpack binutils, rename to binutils, create or clean binutils-cross-build.
3. Build and install:
cd binutils-cross-build
../binutils-cross-configure
make -j 16
make install
3 Install runtime headers:
1. Unpack mingw-w64 and rename to mingw-w64, create or clean
mingw-w64-headers-build.
2. Configure & install:
cd mingw-w64-headers-build
../rt-headers-cross-configure
make install
4. Build cross-GCC, phase 1:
1. Unpack GCC, rename to gcc-cross, create or clean gcc-cross-build.
2. Adapt older gcc-X.Y.Z-mingw-cross.patch (--dry-run) and apply.
3. Adapt gcc-cross-configure based on MinGW-W64 config and old config.
4. Build & install GCC only:
cd gcc-cross-build
../gcc-cross-configure
make -j 16 all-gcc
make install-gcc
5. Build runtime:
1. Create or clean mingw-w64-build.
2. Build & install:
export PATH=`pwd`/cross/mingw/bin:$PATH
cd mingw-w64-build
../rt-cross-configure
make -j 16
make install
6. Build pthreads:
1. Get winpthreads, create or clean winpthreads-build
svn checkout http://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64/experimental/winpthreads
2. Build and install:
export PATH=`pwd`/cross/mingw/bin:$PATH
cd winpthreads-build
../pthreads-cross-configure
make -j 16
make install
7. Build cross-GCC, phase 2:
1. Build & install:
cd gcc-cross-build
make -j 16
make install
2. Disable .dll & .la files in i686-w64-mingw32/lib.
3. Check that the compiler works. Compile and run sizeof_funds.cxx and
throw.cxx.
8. Package runtime:
1. Save mingw-rt as mingw-rt-X.Y.Z
2. Package:
cd mingw-w64-headers-build
make DESTDIR=/home/boris/work/odb/build/mingw-w64/mingw-rt install
cd mingw-w64-build
make DESTDIR=/home/boris/work/odb/build/mingw-w64/mingw-rt install
cd winpthreads-build
make DESTDIR=/home/boris/work/odb/build/mingw-w64/mingw-rt install
Move to the top level directory.
9. Build binutils:
1. Create or clean binutils-build, /mingw.
2. Build and install:
export PATH=`pwd`/cross/mingw/bin:$PATH
cd binutils-build
../configure-binutils
make -j 16
make install
3. Copy /mingw/* to mingw-binutils.
10. Build GCC prerequisites (gmp, mpfr, mpc):
1. Unpack {gmp, mpfr, mpc}
2. Build and install:
cd {gmp, mpfr, mpc}
../gcc-prereq-configure
make -j 16
make install
11. Build the native compiler:
1. Unpack GCC, rename to gcc, create or clean gcc-build.
2. Adapt older gcc-X.Y.Z-mingw.patch (--dry-run) and apply.
3. Adapt older gcc-X.Y.Z-static-plugin.patch (--dry-run) and apply.
This step will probably require careful review of changes in the
plugin code (plugin.h and plugin.c).
4. Regenerate configure script in gcc/gcc/. Use the same autoconf
version as in the original (see ~/build/autocond-X.Y). For example:
sudo make -C ~/build/autoconf-2.64 install
autoconf --version
cd gcc
autoconf
sudo make -C ~/build/autoconf-2.64 uninstall
4. Adapt gcc-configure.
5. Configure and make GCC manually:
export PATH=`pwd`/cross/mingw/bin:$PATH
cd gcc-build
../gcc-configure
make -j 16
This step will fail due to lack of libplugin-stub.a. That's
ok. Copy .h and .def files from gcc-build/gcc/ to gcc-headers/
(backup old ones).
4. Run the build-dist script with -rebuild
1. If GCC build fails, then it can be re-configured or re-made
directly from the gcc-build directory provided you don't
clean it up (if you do so, you can manually copy libplugin-stub.a
to gcc-build/gcc/).
2. Check the package for any stray directories/files. Compare size to
the old version.
3. On Windows, check that:
- Compiler, including exceptions, work. Compile and run sizeof_funds.cxx
and throw.cxx.
- Make sure ODB runs, including throwing exceptions (run on object
with private data members).
5. Copy updates/patches to odb/etc/.
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