Marc Jones ([email protected]) just uploaded a new patch set to gerrit, which 
you can find at http://review.coreboot.org/153

-gerrit

commit 2e32ef156a8efa6886315c1803ce9d3186c7390c
Author: Marc Jones <[email protected]>
Date:   Mon Aug 15 15:37:11 2011 -0600

    Add Python scripting to GDB.
    
    This allows GDB to run Python scripts. The Python build is dependant on the 
GDB build flag.
    
    Change-Id: Ie7fc8706deec41c804870415d3c79d225c98cd31
    Signed-off-by: Marc Jones <[email protected]>
---
 util/crossgcc/buildgcc                         |   78 +++++++++++++++++++++---
 util/crossgcc/patches/gdb-7.2_pythonhome.patch |   27 ++++++++
 2 files changed, 95 insertions(+), 10 deletions(-)

diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index e58b23e..3a14e98 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -40,6 +40,8 @@ W32API_VERSION=3.17-2
 W32API_VERSION_SHORT=3.17
 MINGWRT_VERSION=3.18
 IASL_VERSION=20110623
+PYTHON_VERSION=2.7
+EXPAT_VERSION=2.0.1
 
 # archive locations
 
GMP_ARCHIVE="ftp://ftp.gmplib.org/pub/gmp-${GMP_VERSION}/gmp-${GMP_VERSION}.tar.bz2";
@@ -52,6 +54,8 @@ 
GDB_ARCHIVE="http://ftp.gnu.org/gnu/gdb/gdb-${GDB_VERSION}.tar.bz2";
 
W32API_ARCHIVE="http://downloads.sourceforge.net/project/mingw/MinGW/BaseSystem/RuntimeLibrary/Win32-API/w32api-${W32API_VERSION_SHORT}/w32api-${W32API_VERSION}-mingw32-src.tar.lzma";
 
MINGWRT_ARCHIVE="http://downloads.sourceforge.net/project/mingw/MinGW/BaseSystem/RuntimeLibrary/MinGW-RT/mingwrt-${MINGWRT_VERSION}/mingwrt-${MINGWRT_VERSION}-mingw32-src.tar.gz";
 
IASL_ARCHIVE="http://www.acpica.org/download/acpica-unix-${IASL_VERSION}.tar.gz";
+PYTHON_ARCHIVE="http://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_VERSION}.tar.bz2";
+EXPAT_ARCHIVE="http://downloads.sourceforge.net/sourceforge/expat/expat-${EXPAT_VERSION}.tar.gz";
 
 GMP_DIR="gmp-${GMP_VERSION}"
 MPFR_DIR="mpfr-${MPFR_VERSION}"
@@ -63,6 +67,8 @@ GDB_DIR="gdb-${GDB_VERSION}"
 W32API_DIR="w32api-${W32API_VERSION}-mingw32"
 MINGWRT_DIR="mingwrt-${MINGWRT_VERSION}-mingw32"
 IASL_DIR="acpica-unix-${IASL_VERSION}"
+PYTHON_DIR="Python-${PYTHON_VERSION}"
+EXPAT_DIR="expat-${EXPAT_VERSION}"
 
 SAVETEMPS=0
 SKIPGDB=0
@@ -101,7 +107,7 @@ MAKE=`searchgnu make` || exit $?
 cleanup()
 {
        printf "Cleaning up temporary files... "
-       rm -rf build-* combined gcc-* gmp-* mpfr-* mpc-* libelf-* binutils-* 
gdb-* w32api-* mingwrt-* acpica-*
+       rm -rf build-* combined gcc-* gmp-* mpfr-* mpc-* libelf-* binutils-* 
gdb-* w32api-* mingwrt-* acpica-* python-* expat-*
        printf "${green}ok${NC}\n"
 }
 
@@ -187,9 +193,13 @@ while true ; do
 done
 
 GDB_PACKAGE="GDB"
+PYTHON_PACKAGE="PYTHON"
+EXPAT_PACKAGE="EXPAT"
 if [ $SKIPGDB -eq 1 ]; then
        printf "Will skip GDB ... ${green}ok${NC}\n"
        GDB_PACKAGE=""
+       PYTHON_PACKAGE=""
+       EXPAT_PACKAGE=""
 fi
 
 MINGW_ARCHIVES=""
@@ -223,7 +233,7 @@ fi
 
 printf "Downloading tar balls ... \n"
 mkdir -p tarballs
-for ARCHIVE in $GMP_ARCHIVE $MPFR_ARCHIVE $MPC_ARCHIVE $LIBELF_ARCHIVE 
$GCC_ARCHIVE $BINUTILS_ARCHIVE $GDB_ARCHIVE $MINGW_ARCHIVES $IASL_ARCHIVE; do
+for ARCHIVE in $GMP_ARCHIVE $MPFR_ARCHIVE $MPC_ARCHIVE $LIBELF_ARCHIVE 
$GCC_ARCHIVE $BINUTILS_ARCHIVE $GDB_ARCHIVE $MINGW_ARCHIVES $IASL_ARCHIVE 
$PYTHON_ARCHIVE $EXPAT_ARCHIVE; do
        FILE=`basename $ARCHIVE`
        printf " * $FILE "
        test -f tarballs/$FILE && printf "(cached)" || (
@@ -244,7 +254,7 @@ if [ "$TARGETARCH" = "i386-mingw32" ]; then
 fi
 
 printf "Unpacking and patching ... \n"
-for PACKAGE in GMP MPFR MPC LIBELF GCC BINUTILS $GDB_PACKAGE $MINGW_PACKAGES 
IASL; do
+for PACKAGE in GMP MPFR MPC LIBELF GCC BINUTILS $PYTHON_PACKAGE $EXPAT_PACKAGE 
$GDB_PACKAGE $MINGW_PACKAGES IASL; do
        archive=$PACKAGE"_ARCHIVE"
        archive=${!archive}
        dir=$PACKAGE"_DIR"
@@ -258,7 +268,7 @@ for PACKAGE in GMP MPFR MPC LIBELF GCC BINUTILS 
$GDB_PACKAGE $MINGW_PACKAGES IAS
                for patch in patches/${!dir}_*.patch; do
                        test -r $patch || continue
                        printf "   o `basename $patch`\n"
-                       $PATCH -s -N -p0 < `echo $patch`
+                       $PATCH -s -N -p0 < `echo $patch` || printf 
"\n${RED}Failed $patch.${red}\n"
                done
        )
 done
@@ -292,7 +302,7 @@ if [ `uname` = "Darwin" ]; then
        #rm .architecture_check.c .architecture_check.o
 fi
 
-mkdir -p build-gmp build-mpfr build-mpc build-libelf build-binutils build-gcc
+mkdir -p build-gmp build-mpfr build-mpc build-libelf build-binutils build-gcc 
build-python build-expat
 if [ $SKIPGDB -eq 0 ]; then
        mkdir -p build-gdb
 fi
@@ -346,6 +356,10 @@ test -r build-mpfr/.failed && printf "${RED}failed${NC}\n" 
|| printf "${green}ok
 test -r build-mpfr/.failed && exit 1
 fi
 
+# Remove -pedantic. It is used by GMP and MPFR, but causes warning and
+# errors for C98/C99 stuff in GCC, GDB, and etc.
+HOSTCFLAGS=$(echo $HOSTCFLAGS | sed -e 's/-pedantic//')
+
 if [ -f build-mpc/.success ]; then
        printf "Skipping MPC as it is already built\n"
 else
@@ -433,6 +447,47 @@ test -r build-gcc/.failed && printf "${RED}failed${NC}\n" 
|| printf "${green}ok$
 test -r build-gcc/.failed && exit 1
 fi
 
+if [ -f build-expat/.success ]; then
+       printf "Skipping EXPAT as it is already built\n"
+elif [ $SKIPGDB -eq 1 ]; then
+       printf "Skipping EXPAT as requested by command line (skip GDB)\n"
+else
+printf "Building EXPAT ${EXPAT_VERSION} ... "
+(
+       cd build-expat
+       export PATH=$PATH:$DESTDIR$TARGETDIR/bin
+       rm -f .failed
+       CFLAGS="$HOSTCFLAGS" ../${EXPAT_DIR}/configure --disable-shared \
+               --prefix=$TARGETDIR --target=${TARGETARCH} || touch .failed
+       $MAKE || touch .failed
+       $MAKE install DESTDIR=$DESTDIR || touch .failed
+       if [ ! -f .failed ]; then touch .success; fi
+) &> build-expat/crossgcc-build.log
+test -r build-expat/.failed && printf "${RED}failed${NC}\n" || printf 
"${green}ok${NC}\n"
+test -r build-expat/.failed && exit 1
+fi
+
+
+if [ -f build-python/.success ]; then
+       printf "Skipping PYTHON as it is already built\n"
+elif [ $SKIPGDB -eq 1 ]; then
+       printf "Skipping PYTHON as requested by command line (skip GDB)\n"
+else
+printf "Building PYTHON ${PYTHON_VERSION} ... "
+(
+       cd build-python
+       export PATH=$PATH:$DESTDIR$TARGETDIR/bin
+       rm -f .failed
+       CFLAGS="$HOSTCFLAGS" ../${PYTHON_DIR}/configure --prefix=$TARGETDIR \
+               --target=${TARGETARCH} || touch .failed
+       $MAKE $JOBS || touch .failed
+       $MAKE install DESTDIR=$DESTDIR || touch .failed
+       if [ ! -f .failed ]; then touch .success; fi
+) &> build-gdb/crossgcc-build.log
+test -r build-python/.failed && printf "${RED}failed${NC}\n" || printf 
"${green}ok${NC}\n"
+test -r build-python/.failed && exit 1
+fi
+
 if [ -f build-gdb/.success ]; then
        printf "Skipping GDB as it is already built\n"
 elif [ $SKIPGDB -eq 1 ]; then
@@ -441,10 +496,13 @@ else
 printf "Building GDB ${GDB_VERSION} ... "
 (
        cd build-gdb
-       export PATH=$PATH:$DESTDIR$TARGETDIR/bin
+       export PATH=$DESTDIR$TARGETDIR/bin:$PATH
+       export PYTHONHOME=$DESTDIR$TARGETDIR
        rm -f .failed
-       CFLAGS="$HOSTCFLAGS" ../gdb-${GDB_VERSION}/configure 
--prefix=$TARGETDIR --target=${TARGETARCH} \
-               --without-python --disable-werror --disable-nls
+       LDFLAGS="-Wl,-rpath,\$\$ORIGIN/../lib/ -L$DESTDIR$TARGETDIR/lib 
-lpthread -ldl -lutil"\
+               CFLAGS="$HOSTCFLAGS -I$DESTDIR$TARGETDIR/include" 
../gdb-${GDB_VERSION}/configure \
+               --prefix=$TARGETDIR --target=${TARGETARCH} \
+               --disable-werror --disable-nls
        $MAKE $JOBS || touch .failed
        $MAKE install DESTDIR=$DESTDIR || touch .failed
        if [ ! -f .failed ]; then touch .success; fi
@@ -480,6 +538,8 @@ if [ $SAVETEMPS -eq 0 ]; then
        rm -rf ${BINUTILS_DIR} build-binutils
        rm -rf ${GCC_DIR} build-gcc
        rm -rf ${GDB_DIR} build-gdb
+       rm -rf ${EXPAT_DIR} build-expat
+       rm -rf ${PYTHON_DIR} build-python
        rm -rf ${IASL_DIR}
        printf "${green}ok${NC}\n"
 else
@@ -487,5 +547,3 @@ else
 fi
 
 printf "\n${green}You can now run your $TARGETARCH cross toolchain from 
$TARGETDIR.${NC}\n"
-
-
diff --git a/util/crossgcc/patches/gdb-7.2_pythonhome.patch 
b/util/crossgcc/patches/gdb-7.2_pythonhome.patch
new file mode 100644
index 0000000..26be271
--- /dev/null
+++ b/util/crossgcc/patches/gdb-7.2_pythonhome.patch
@@ -0,0 +1,27 @@
+--- /tmp/gdb-7.2/gdb/python/python.c   2010-08-09 21:22:59.000000000 +0200
++++ gdb-7.2/gdb/python/python.c        2010-10-28 15:31:35.000000000 +0200
+@@ -28,6 +28,7 @@
+ #include "value.h"
+ #include "language.h"
+ #include "exceptions.h"
++#include <libgen.h>
+
+ #include <ctype.h>
+
+@@ -684,6 +685,16 @@
+                            SLASH_STRING, "python", NULL));
+ #endif
+
++
++  char readlinkbuffer[BUFSIZ];
++  int readlinks = readlink("/proc/self/exe", readlinkbuffer, BUFSIZ - 1);
++  readlinkbuffer[readlinks] = 0;
++  char *executeablepath = dirname(readlinkbuffer);
++  char *pythonhome = malloc(strlen(executeablepath) + strlen("/../") + 2);
++  strcpy(pythonhome, executeablepath);
++  strcat(pythonhome, "/../");
++  setenv("PYTHONHOME", pythonhome, 1);
++
+   Py_Initialize ();
+   PyEval_InitThreads ();
+

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