File: README_gnat-4.6.3

Download this file
==================
darnassus.sceen.net:~gnu_srs/gnat-4.6/README_gnat-4.6.3

Remaining problems:
1) the default GNU/Hurd gcc complier driver does not recognize ada
libraries: fixed by: debian_rules.defs_ada.diff: Bugs #667662 and #668268.

1a) the default GNU/Hurd gcc compiler does not build the GNU locales deb:
Fixed in gcc-4.6.3-3 and gcc-4.7.0-3: Bugs #668425 and #668426

2) built binaries segfaults at startup (dynamic and static: sjlj and
zcx): Solved by modifying s-taprop-gnu.adb, s-osinte-gnu.adb and
s-osinte-gnu.ads!

Download and install the built gnat debs:
=========================================
darnassus.sceen.net:~gnu_srs/gnat-4.6/debs/*.deb

gnat-4.6_4.6.3-2_hurd-i386.deb         libgnatprj4.6-dbg_4.6.3-2_hurd-i386.deb
gnat-4.6-base_4.6.3-2_hurd-i386.deb    libgnatprj4.6-dev_4.6.3-2_hurd-i386.deb
gnat-4.6-sjlj_4.6.3-2_hurd-i386.deb    libgnatvsn4.6_4.6.3-2_hurd-i386.deb
libgnat-4.6_4.6.3-2_hurd-i386.deb      libgnatvsn4.6-dbg_4.6.3-2_hurd-i386.deb
libgnat-4.6-dbg_4.6.3-2_hurd-i386.deb  libgnatvsn4.6-dev_4.6.3-2_hurd-i386.deb
libgnatprj4.6_4.6.3-2_hurd-i386.deb

dpkg -i *.deb (or select the essential subset)
apt-get build-dep gnat-4.6
(apt-get install gnat)

Download the patches
====================
darnassus.sceen.net:~gnu_srs/gnat-4.6/patches/*.diff

Debian specific patches:
(Enables Ada: debian_rules.defs_ada.diff: Bugs reported)
(Enables GNU locale: debian_rules.defs_locales.diff: Fixed already)
debian_rules.patch.diff
ada-bug564232_new.diff
ada-libgnatprj_new.diff

Upstream patches:
gcc_ada_gcc-interface_Makefile.in.diff
ada-s-taprop-gnu.adb.diff
ada-s-osinte-gnu.adb.diff
ada-s-osinte-gnu.ads.diff

Install the gnat-4.6 sources
=============================
cd .../gnat-4.6
apt-get source gnat-4.6 (4.6_4.6.3-2)
unpacks to gnat-4.6-4.6.3
debian/ _MIN/

Installing the gcc-4.6 sources:
===============================
Not recommended, since the Hurd version has the old patches in the
patches directory already!

As root: apt-get source gcc-4.6 (4.6_4.6.3-1+hurd.1)
Installs gcc-4.6 at /usr/share and
/usr/src/gcc-4.6
debian  gcc-4.6.3-dfsg.tar.xz  patches

pwd
/home/srs/DEBs/gnat/gnat-4.6.3/gnat-4.6-4.6.3
ln -s /usr/src/gcc-4.6/gcc-4.6.3-dfsg.tar.xz .

Unpacking the gcc-4.6 sources
=============================
debian/rules unpack 2>&1 | tee ../unpack_gnat-4.6.3.log
creates stamps/
01-unpack-stamp  01-unpack-stamp-gcc-4.6.3-dfsg.tar.xz

Alternately: Installing the gcc-4.6 sources:
============================================
apt-get source gcc-4.6=4.6.3-3
Unpacks to: gcc-4.6-4.6.3

Unpacking the gcc-4.6 sources
=============================
cd gnat-4.6-4.6.3
ln -s ../gcc-4.6/gcc-4.6-4.6.3/ .
debian/rules unpack 2>&1 | tee ../unpack_gnat-4.6.3.log
creates stamps/01-unpack-stamp
ln -s gcc-4.6-4.6.3/gcc-4.6.3-dfsg.tar.xz .

debian/rules unpack 2>&1 | tee -a ../unpack_gnat-4.6.3.log
creates stamps/01-unpack-stamp-gcc-4.6.3-dfsg.tar.xz

Patching
========
Copy the following patches to debian/patches:
ada-bug564232_new.diff
ada-libgnatprj_new.diff
debian_rules.patch.diff
gcc_ada_gcc-interface_Makefile.in.diff
ada-s-osinte-gnu.adb.diff
ada-s-osinte-gnu.ads.diff
ada-s-taprop-gnu.adb.diff

Apply patches: (does not work, ada not enabled yet)
Add to the beginning of debian/patches/series:
debian_rules.defs_ada.diff -p1
debian_rules.patch.diff -p1
Does not work: the patches file is overwritten!!

Enabling and applying the Hurd-specific patches:
================================================
debian/rules.defs:
Enable ada for GNU/Hurd manually:
- ada_no_systems  := gnu knetbsd-gnu
+ ada_no_systems  :=

Add patches for GNU/Hurd manually:
debian/rules.patch:
  ifeq ($(with_libgnat),yes)
    debian_patches += \
        ada-link-lib \
        ada-libgnatvsn \
-        ada-libgnatprj \
+        ada-libgnatprj_new \
        ada-acats
    ifeq ($(with_gnat_zcx)-$(with_gnat_sjlj),yes-yes)
      debian_patches += \
        ada-sjlj
    endif
  endif

  ifeq ($(DEB_TARGET_ARCH_OS),kfreebsd)
    debian_patches += ada-kfreebsd-gnu \
-       ada-bug564232
+       ada-bug564232_new
+  endif
+
+  ifeq ($(DEB_TARGET_ARCH_OS),hurd)
+    debian_patches += \
+       ada-kfreebsd-gnu \
+       ada-bug564232_new \
+       ada-libgnatprj_new \
+       gcc_ada_gcc-interface_Makefile.in \
+       ada-s-osinte-gnu.adb \
+       ada-s-osinte-gnu.ads \
+       s-taprop-gnu.ads
   endif
ifeq ($(DEB_TARGET_ARCH_OS),hurd)
-  debian_patches += hurd-pthread
+  debian_patches += hurd-pthread hurd-fixes
endif

debian/rules patch 2>&1 | tee ../patch_gnat-4.6.3.log
creates stamps/
02-patch-stamp  02-series-stamp

FIXME: Delete this file when applying patches again: It controls
updating of the src/*/configure.ac to src/*/configure??? CHECK!!

FIXME: autogen is not installed! Needed?? 
>From patch_gnat-4.6.3.log:
cd /home/srs/DEBs/gnat-4.6/gnat-4.6-4.6.3/src/fixincludes && ./genfixes
./genfixes: 1: ./genfixes: autogen: not found
AutoGen appears to be out of date or not correctly installed.
Please download and install:
   ftp://gcc.gnu.org/pub/gcc/infrastructure/autogen.tar.gz

cat stamps autotools_files
da4cbfef9bc80939fd3b8d5633760829  ./src/boehm-gc/configure.ac
5bb1e804ce8dfef6707776dc5545f5bb  ./src/configure.ac <- UPDATE
f2d1a9bf0648d059eb3c7a3c2d5b045e  ./src/gcc/configure.ac <- UPDATE
5fdfc9508e8b943cc51720e303c5f0e1  ./src/libffi/configure.ac <- UPDATE
68991723439735a382f55f368a845836  ./src/libgnatprj/configure.ac <- UPDATE
ab012655ff764cf0f0d49ea16e7e9afa  ./src/libiberty/configure.ac <- UPDATE
f24e863bb5540f5a732309925f1e9e9d  ./src/libjava/classpath/configure.ac
b1f8f6f05678a19cbab83e36f5b87e14  ./src/libjava/configure.ac

Unapply patches if needed:
debian/rules unpatch 2>&1 | tee ../unpatch_gnat-4.6.3.log
Patch hurd-pthread.diff does not remove cleanly (refresh it or enforce with -f)
quilt pop -af

rm stamps/02-series-stamp
rm stamps/02-patch-stamp
debian/rules patch 2>&1 | tee ../patch_gnat-4.6.3_1.log
creates the stamps and the debian/patches/series file.
quilt pop -a

Check:
quilt applied: (should show all patches below)
ada-driver-check.diff
ada-gcc-name.diff
ada-default-project-path.diff
ada-symbolic-tracebacks.diff
ada-library-project-files-soname.diff
ada-link-lib.diff
ada-libgnatvsn.diff
ada-libgnatprj_new.diff
ada-acats.diff
ada-sjlj.diff
ada-kfreebsd-gnu.diff
ada-bug564232_new.diff
gcc_ada_gcc-interface_Makefile.in.diff
ada-mips.diff
ada-s-osinte-gnu.adb.diff
ada-s-osinte-gnu.ads.diff
ada-s-taprop-gnu.adb.diff
hurd-pthread.diff
hurd-changes.diff
hurd-fixes.diff (gcc-4.6 only)

Configuring
===========
debian/rules configure 2>&1 | tee ../configure_gnat-4.6.3.log

Creates build/
Makefile, config.* etc!

Building
========
debian/rules build 2>&1 | tee ../build_gnat-4.6.3.log

Compile stops, reason:
src/libgnatprj/configure.ac is newer than src/libgnatprj/configure!
Find out why autoconf2.64 is not run here??

Make sure every patch changing a configure.ac creates a new configure:
(cd src; autoconf2.64): ada-link-lib.diff
(cd src/libgnatprj; autoconf2.64): ada-libgnatvsn_new.diff

(cd src/gcc; autoconf2.64)
(cd src/libffi; autoconf2.64)
(cd src/libiberty; autoconf2.64)

debian/rules build 2>&1 | tee -a ../build_gnat-4.6.3.log

Installing files
================
fakeroot debian/rules install 2>&1 | tee ../install_gnat-4.6.3.log

Creating debs
=============
fakeroot debian/rules binary 2>&1 | tee ../binary_gnat-4.6.3.log

DONE TO HERE: 2012-04-11

Of course the build can be made in one stage (if all the above steps
succeeds)

dpkg-buildpackage -b (or whatever)