#
# spec file for package cross-avr-gcc
#
# Copyright (c) 2010 SUSE LINUX Products GmbH, Nuernberg, Germany.
# This file and all modifications and additions to the pristine
# package are under the same license as the package itself.
#
# Please submit bugfixes or comments via http://bugs.opensuse.org/
#
# rpm build documentation:
# http://en.opensuse.org/Portal:Packaging
# RPM Guide (search for rpm guide)
# http://docs.fedoraproject.org/en-US/Fedora_Draft_Documentation/0.1/html/RPM_Guide/
#
# cross gcc installation instructions:
# http://gcc.gnu.org/install/
# http://gcc.gnu.org/install/configure.html
# http://gcc.gnu.org/install/build.html
#
# Some more specifics to avr-gcc:
# http://lists.nongnu.org/archive/html/avr-gcc-list/2011-11/msg00006.html
# http://lists.nongnu.org/archive/html/avr-gcc-list/2011-11/msg00007.html
#
# Also try uninstalling all other avr compilers first.
#
# Build scripts from wrightflyer:
# http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=42631
#
# Note prefix=/usr:
# An rpm is compiled, but the compiler doesn't find its as or ld (can be fixed
# by symlinking to the correct ones from /usr/lib64/gcc/avr/4.6.2/), and the
# linker doesn't find e.g. crtm328p.o. There probably is a fix, but I don't know
# it.
# Of course putting binutils and gcc into the same root will handle it.
# Please don't remove the respective code from spec file, it's been tested, and
# eventually one doesn't have to start from zero.
#
# Note gcc 4.7 snapshots:
# The version used for gcc internal files is 4.7.0:
#   lib/gcc/avr/4.7.0/
# That means it is not possible to install 2 different snapshots with the
# same prefix, or any snapshot with the final 4.7.0.
#
# PPL / CLooG:
# http://gcc.gnu.org/wiki/Graphite
#
# norootforbuild

### spec file configuration
###

# Build Comments for this build:
#  prefix = /opt/cross/avr
#  No supplied gmp / mpc / mpfr (use system ones).
#  clean PATH
#  No -m32 or -m64 in CFLAGS!
#  CFLAGS strictly only for configure, but not for make.
#  With system ppl and cloog libraries.
#  gcc 4.7 testing snapshort; no program suffix.

%define vers		4.3.6
%define prefix		/opt/cross/avr
#define prefix		/usr
%define sysroot 	/opt/cross/avr
%define pgprefix	avr-
%define pgsuffix	-436

# Use the gmp / mpc / mpfr sources in this package (otherwise, expect the -devel
# packages with headers and libXX.a to be installed).
%define with_own_gmp_mpc_mpfr 0

# Use system ppl, cloog libraries.
%define sys_ppl_cloog	1

# gcc build directory, to build outside its source directory.
# http://gcc.gnu.org/install/configure.html
# Says to always build outside the source dir, everything else is either
# not well tested or unsupported.
# This gccbuilddir is parallel to the gcc source tree dir, in RPM_BUILD_DIR.
%define gccbuilddir build-gcc-%{vers}

###
### end spec file configuration

# The rpm version can't have hyphens.
%define rpmvers		%(echo %{vers} | tr - .)

# This is used to simplify tests. True if prefix is /usr
%define prefix_is_usr %(test %{prefix} = %{_usr} && echo 1 || echo 0)

# Make system macros pick up on new prefix.
%define _prefix %prefix

# Directory gcc uses to store its libgcc, cc1, etc.
# Equal to %{vers} if X.Y.Z, or to X.Y.0 if %{vers} = X.Y-99999
%define cclibvers %(echo %{vers} | sed 's/-[0-9]*/.0/')

Name:           avr-gcc%{pgsuffix}
Version:        %{rpmvers}
Release:        8
Summary:	The GNU C/C++ Compiler for Atmel AVR with xmega support

BuildRequires:	chrpath
BuildRequires:	texinfo libexpat-devel expat
BuildRequires:  bison flex
BuildRequires:  cross-avr-binutils
BuildRequires:	avr-libc
%if ! %with_own_gmp_mpc_mpfr
BuildRequires:  gmp-devel >= 4.2 mpc-devel >= 0.8.0 mpfr-devel >= 2.3.1
%endif
%if %{sys_ppl_cloog}
BuildRequires:  ppl-devel >= 0.11 cloog-devel >= 0.15
%endif

# For any updates see
# http://wiki.opensuse.org/openSUSE:Packaging_Conventions_RPM_Macros
BuildRequires:  fdupes

Requires:	avr-libc
Requires:	cross-avr-binutils

PreReq:		%install_info_prereq

# .osc/_buildconfig_* contains this nonsense:
# ## from CrossToolchain:avr
# Substitute: cross-avr-gcc cross-avr-gcc43
#
# this causes /usr/bin/build to edit changes into the spec file.
# -> we compensate by providing this symbol
Provides:	avr-gcc47 = %{version}

Source0:	http://ftp.gwdg.de/pub/misc/gcc/snapshots/LATEST-4.7/gcc-%{vers}.tar.bz2

%if %with_own_gmp_mpc_mpfr
# Libraries used for building gcc (required, either as source, or installed
# with headers and libXXX.a):
Source1:	gmp-5.0.1.tar.bz2
Source2:	mpc-0.8.2.tar.bz2
Source3:	mpfr-3.0.0.tar.bz2
%endif

# Historic shell scripts for building previous versions:
Source10:	buildavr-no-insight.sh
Source11:	getfiles.sh
Source12:	get-patches.sh
## gcc-patch-cross-cflags-upstream25672.diff is suse specific, not present in wrightflyer builds
#Patch11:	gcc-patch-cross-cflags-upstream25672.diff

URL:		http://gcc.gnu.org/
Group:          Development/Libraries/C and C++
License:        GPLv3+
AutoReqProv:    on
BuildRoot:      %{_tmppath}/%{name}-%{vers}-build

%description
This compiler supports the C and C++ languages on AVR microprocessors.
Also install cross-avr-binutils and avr-libc.
gcc built for Atmel AVR.
Default-build as per GNU.
This package can be installed in parallel with another avr-gcc already
installed.

%prep
%setup -q -n gcc-%{vers}

%if %with_own_gmp_mpc_mpfr
%setup -q -n gcc-%{vers} -D -T -a 1
%setup -q -n gcc-%{vers} -D -T -a 2
%setup -q -n gcc-%{vers} -D -T -a 3
%endif

# Delete gcc build dir first, it may be left over from previous build.
cd "$RPM_BUILD_DIR"
test -d "%{gccbuilddir}" && %__rm -rf "%{gccbuilddir}"

%build
# Copy the build scripts previously used (and pack them later as doc).
%__chmod 644 %SOURCE10 %SOURCE11 %SOURCE12
%__cp -p %SOURCE10 %SOURCE11 %SOURCE12 .

# The critical part is that some versions of gcc need the sources of these
# libraries available, and others don't. The compiled libraries and headers are
# always required to be on the system (if not, the sources are definitely
# required and the build will compile them first).
# See
# http://lists.nongnu.org/archive/html/avr-gcc-list/2011-10/msg00073.html
# If these library sources are not in the gcc source directory, building
# happens with the 3-stage process for non-cross compilers which later fails,
# and which takes 1:05h instead of 0:15h. (gcc 4.6.2)
%if %with_own_gmp_mpc_mpfr
%__mv gmp-5.0.1 gmp
%__mv mpc-0.8.2 mpc
%__mv mpfr-3.0.0 mpfr
%endif

# Setting CFLAGS is required for configure, but fatal for make!
#export CFLAGS="$RPM_OPT_FLAGS"
#export target=avr

# Create and enter build dir.
cd "$RPM_BUILD_DIR"
%__mkdir "%{gccbuilddir}"
cd "%{gccbuilddir}"

# This makes no difference (all those directories are in the default system
# shared library path already). (gcc 4.6.2)
#export LD_LIBRARY_PATH="%{prefix}/lib:/usr/lib64:$LD_LIBRARY_PATH"
#export LD_RUN_PATH="%{prefix}/lib:/usr/lib64:$LD_RUN_PATH"

# Make sure nothing extra is in here.
# See
# http://lists.nongnu.org/archive/html/avr-gcc-list/2011-11/msg00006.html
unset LD_LIBRARY_PATH
export LD_LIBRARY_PATH

# Clean up PATH
PATH=/sbin:/usr/sbin:/usr/local/sbin:/bin:/usr/bin:/usr/local/bin
%if %{prefix_is_usr}
# Find the AVR assembler.
PATH=$PATH:%{sysroot}/bin
%endif
export PATH

# These flags work for 4.6.2:
# -O2 -g -fmessage-length=0 -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables

# Using -m64 for configure (and not for make) causes the target libgcc to be
# built for x86_64-unknown-linux-gnu - not useful. (gcc 4.6.2)
# Using -m32 is also fatal for getting a working cross gcc. (on x86_64 host, gcc
# 4.6.2)

# Remove -m* from RPM_OPT_FLAGS for use in CFLAGS.
AVR_CFLAGS=
for opt in $RPM_OPT_FLAGS; do
    case $opt in
        -m*)
	    ;; # discard
	*)
	    AVR_CFLAGS="$AVR_CFLAGS $opt" ;;
    esac
done

echo "RPM_OPT_FLAGS: $RPM_OPT_FLAGS"
echo "Removing flags: -m*"
echo "Using flags: $AVR_CFLAGS"

# gcc (4.6.2) installs cc1, cc1plus into libexecdir, which is /usr/lib on
# openSUSE, leading to the crazy concept of host-size-independent libgcc
# being installed into /usr/lib64 while all the x86_64-dependent binaries are
# installed in /usr/lib.
# --> configure with libexecdir = libdir

echo "($0) configuring GCC source"
CFLAGS="$AVR_CFLAGS" \
../gcc-%{vers}/configure \
	-v \
	--prefix=%{prefix} \
	--exec-prefix=%{_exec_prefix} \
	--libdir=%{_libdir} \
	--libexecdir=%{_libdir} \
	--mandir=%{_mandir} \
	--infodir=%{_infodir} \
	--with-gnu-ld \
	--with-gnu-as \
	--target=avr \
	--enable-languages="c,c++" \
	--program-prefix=%{pgprefix} \
%if %(test -n "%{pgsuffix}" && echo 1 || echo 0)
	--program-suffix=%{pgsuffix} \
%endif
	--with-sys-root=%{sysroot} \
	--disable-nls \
	--disable-libssp \
	--with-dwarf2 \
%if %{sys_ppl_cloog}
	--with-ppl \
	--with-cloog \
%else
	--without-ppl \
	--without-cloog \
%endif

# This doesn't make gcc find its system headers (avr-libc headers) in
# /opt/cross/avr/avr/include, and causes this gcc to call its assembler as
# /usr/bin/as - which is the x86 one.
# --with-sys-root= unfortunately doesn't seem to make gcc look in
# sys-root/include for the avr-libc headers.
#%if %{prefix_is_usr}
#	--with-gxx-include-dir=%{sysroot}/include \
#%endif

echo "($0) compiling GCC source"
# Parallel make with jobs=6 works, dropping compile time >50% (6 core Phenom).
%{__make} %{?jobs:-j%{jobs}}

%install
cd ../%{gccbuilddir}
%__make install DESTDIR=$RPM_BUILD_ROOT
%__gzip -f $RPM_BUILD_ROOT%{prefix}/share/man/man*/*.*
%fdupes -s $RPM_BUILD_ROOT%{prefix}/

# man pages in section 1 are already named prefix-XX-suffix.

# Rename man pages in section 7.
pushd $RPM_BUILD_ROOT%{_mandir}/man7
for f in *.7.gz; do
  %__mv $f %{pgprefix}$(basename $f .7.gz)%{pgsuffix}.7.gz
done
popd

# Modify and rename info files.
# The file name in the info file has to be the same as the actual file name, or
# the info index is not updated properly.
pushd $RPM_BUILD_ROOT%{_infodir}
for file in *info*; do
  ## Modify file name in info file.
  name=$(basename $file .info) # base name (no .info) to change in info file
  pref=%{pgprefix} # name prefix to add in info file
  suff=%{pgsuffix} # name suffix to add in info file

  sed < "$file" > "$file.new" "
    s,/$name.info,/$pref$name$suff.info,
    s,\* $name: ($name)\.,* $pref$name$suff: ($pref$name$suff).,i
    s,\* cpplib: ($name)\.,* $pref$name$suff: ($pref$name$suff).,i
    s/File: $name.info/File: $pref$name$suff.info/
    " \
    && cat "$file.new" > "$file" \
    && rm "$file.new"

  ## Rename info file.
  %__mv $file %{pgprefix}$(basename $file .info)%{pgsuffix}.info
done
popd

# Compress info files (but not the dir file).
%__gzip $RPM_BUILD_ROOT%{_infodir}/*.info

# Strip binaries.
for file in $RPM_BUILD_ROOT%{_bindir}/*; do
  test -f $file && %__strip $file || true
done
for file in cc1 cc1plus collect2 lto1 install-tools/fixincl; do
  dir=$RPM_BUILD_ROOT%{_libdir}/gcc/avr/%{cclibvers}
  test -f $dir/$file && %__strip $dir/$file || true
done

# Symlink as and ld from binutils for this particular gcc, if prefix = /usr.
# Without this, this gcc runs the system's as/ld.
%if %prefix_is_usr
for file in as ld; do
  %__ln_s %{sysroot}/avr/bin/$file $RPM_BUILD_ROOT%{_libdir}/gcc/avr/%{vers}
done
%endif

# Symlinks to prefix in /usr, if prefix is not /usr.
%if ! %prefix_is_usr
pushd .
  # Symlinks from /usr/bin to %prefix/bin.
  %__install -d $RPM_BUILD_ROOT%{_usr}/bin
  for f in c++ cpp g++ gcc gcov
  do
    %__ln_s %{prefix}/bin/%{pgprefix}$f%{pgsuffix} $RPM_BUILD_ROOT%{_usr}/bin
  done
  %__ln_s %{prefix}/bin/%{pgprefix}gcc-%{cclibvers} $RPM_BUILD_ROOT%{_usr}/bin

  # Symlinks from /usr/share/man/man1 to prefix/share/man/man1.
  %__install -d $RPM_BUILD_ROOT%{_usr}/share/man/man1
  for f in cpp g++ gcc gcov
  do
    %__ln_s %{prefix}/share/man/man1/%{pgprefix}$f%{pgsuffix}.1.gz \
      $RPM_BUILD_ROOT%{_usr}/share/man/man1
  done

  # Symlinks from /usr/share/man/man7 to prefix/share/man/man7.
  %__install -d $RPM_BUILD_ROOT%{_usr}/share/man/man7
  cd $RPM_BUILD_ROOT%{prefix}/share/man/man7
  for f in *; do
    %__ln_s %{prefix}/share/man/man7/$f $RPM_BUILD_ROOT%{_usr}/share/man/man7
  done

  # Symlinks from /usr/share/info to prefix/share/info.
  %__install -d $RPM_BUILD_ROOT%{_usr}/share/info
  cd $RPM_BUILD_ROOT%{prefix}/share/info
  for f in *; do
    test $f = dir && continue
    %__ln_s %{prefix}/share/info/$f $RPM_BUILD_ROOT%{_usr}/share/info
  done
popd
%endif

# Install symlinks to binaries into a versioned directory, without the program
# suffix, so this compiler version can be run by avr-gcc by putting the
# versioned directory first in path.
# Needed for Arduino IDE.
%__install -d $RPM_BUILD_ROOT%{_libdir}/gcc/avr/%{cclibvers}/bin
pushd $RPM_BUILD_ROOT%{_libdir}/gcc/avr/%{cclibvers}/bin
%__ln_s ../../../../../bin
for file in ../../../../../bin/*; do
  case "$file" in
    *%{vers}) continue;
  esac
  if [ -f "$file" ]; then
    %__ln_s "$file" "$(basename "$file" %{pgsuffix})"
  fi
done
# binutils
for file in ar as ld nm objcopy objdump ranlib strip; do
  %__ln_s %{sysroot}/bin/avr-$file .
done
popd

%post
# Update info file index. (The SUSE macros don't work properly.)
if [ -n "%{pgprefix}%{pgsuffix}" -a -x /sbin/install-info ]; then
  for file in %_infodir/%{pgprefix}*%{pgsuffix}*.info.gz
  do
    /sbin/install-info --quiet --info-dir=%_infodir "$file"
  done
%if ! %prefix_is_usr
  %define infdir %{_usr}/share/info
  for file in %infdir/%{pgprefix}*%{pgsuffix}*.info.gz
  do
    /sbin/install-info --quiet --info-dir=%infdir "$file"
  done
%endif
fi

%preun
# Update info file index.
if [ -n "%{pgprefix}%{pgsuffix}" -a -x /sbin/install-info ]; then
  for file in %_infodir/%{pgprefix}*%{pgsuffix}*.info.gz
  do
    /sbin/install-info --quiet --delete --info-dir=%_infodir "$file"
  done
%if ! %prefix_is_usr
  %define infdir %{_usr}/share/info
  for file in %infdir/%{pgprefix}*%{pgsuffix}*.info.gz
  do
    /sbin/install-info --quiet --delete --info-dir=%infdir "$file"
  done
%endif
fi

%clean
%if ! %{dont_clean_build_root}
%__rm -rf "$RPM_BUILD_ROOT"
cd "$RPM_BUILD_DIR"
test -d "%{gccbuilddir}" && %__rm -rf "%{gccbuilddir}"
%endif

%files
%defattr (-, root, root)
%doc ChangeLog* COPYING* LAST_UPDATED README
%if %(test -f NEWS && echo 1 || echo 0)
%doc NEWS
%endif
%doc getfiles.sh get-patches.sh buildavr-no-insight.sh

## prefix = /opt/cross/avr
%if ! %prefix_is_usr
%doc %{_infodir}/*
%doc %{_mandir}/man*/*
%{_bindir}/*
%{_libdir}/gcc/avr/%{cclibvers}
%exclude %{_libdir}/libiberty.a
# In /usr:
%doc %{_usr}/share/man/man*/*
%doc %{_usr}/share/info/*
%{_usr}/

## prefix = /usr
%else
#/usr/avr # directories are created, but are empty
# libiberty.a is part of binutils on the host system, and part of avr-insight
# in /opt/cross/avr, so don't package it here with avr-gcc.
%doc %{_infodir}/*
%doc %{_mandir}/man*/*
%{_bindir}/*
%exclude %{_libdir}/libiberty.a
%{_libdir}/gcc/avr/%{cclibvers}
%endif

%exclude %{_infodir}/dir

%changelog
* Mon Nov 07 2011 Volker Kuhlmann
- Adapted to also handle gcc 4.7 snapshots.
- Make gcc 4.3.6 packages too.
* Sun Nov 06 2011 Volker Kuhlmann
- Finished upgrade to 4.6.2.
- General upgrade of spec file.
- Allow installation in parallel with other avr-gcc.
* Tue Oct 18 2011 max@suse.com
- Fix libmpfr dependency.
* Thu Aug  5 2010 mhopf@novell.com
- Use 4.3.3_20100125 as version number again, had been accidentally nuked
  directly after the change.
* Thu Aug  5 2010 jw@novell.com
- using versioned Provides, as suggested by *.note
  Strange: the version number is back at 4.3.3,
  Matthias, is your work reverted now?
* Mon Jul 19 2010 jw@novell.com
- fixed usage of %%fdupes.
* Tue Mar 23 2010 mhopf@novell.com
- Use 4.3.3_20100125 as version number so that it is larger than
  4.3.3_20081022 from cross-avr-gcc43 in openSUSE 11.1
* Tue Mar 23 2010 mhopf@novell.com
- Add mpfr-devel to build requires.
* Tue Mar 23 2010 mhopf@novell.com
- Use gmp-devel = 4.3.1 -gmp as build requires
  (gmp is installed automatically, we use libgmp3)
- gcc-patch-cross-cflags-upstream25672.diff: Fix long-standing bug in gcc
  in setting cross-compile CFLAGS correctly.
* Sun Mar  7 2010 jw@novell.com
- provide cross-avr-gcc43, as the symbol cross-avr-gcc
  is automagically changed.
* Sun Mar  7 2010 jw@novell.com
- no /opt/cross/share/dir file here, it conflicts with our binutils
* Sat Mar  6 2010 jw@suse.de
- More rumgefummel at the spec-file:
  bringing symlinks to /usr/bin/
  gzipped man pages to standard locations,
  while still keeping the installation at /opt/cross/avr
* Thu Mar  4 2010 jw@novell.com
- Release:        25jan2010
- using build instructions from
  http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=42631