Updated version from Donn Cave <donn@oz.net>.
This closes SourceForge patch #101778.
This commit is contained in:
Fred Drake
parent
04f4943d13
commit
d359022127
209
BeOS/ar-fake
209
BeOS/ar-fake
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@ -1,157 +1,64 @@
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#! /bin/sh
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#!/bin/sh
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#
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# Fake "ar" to build the Python shared library on BeOS. This "ar"
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# manipulates a .ar-libname file listing all the objects and regenerates
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# the shared lib every time it's called. This is probably only suitable
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# for things that get built like Python, and you'll probably have to make
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# some small modifications here and there.
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# Truly fake ar, using a directory to store object files.
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#
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# This stupid hackery is necessary due to the brain-damaged __declspec()
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# semantics on x86; on PowerPC, we could just build a static library
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# and turn that into a shared library using an exports list. On x86, you'd
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# need to use a fake table of pointers to every symbol you wanted to
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# export, otherwise you'd end up with an empty shared lib. This is
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# progress?
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#
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# Called via:
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#
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# ar-fake cr lib-name objects
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# ar-fake d lib-name objects
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#
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# This fake "ar" DOES NOT support any other POSIX "ar" commands! DO NOT
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# expect it to behave very intelligently, it's designed to build Python,
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# not any old shared lib.
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# Donn Cave, donn@oz.net
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AR_COMMAND=$1 ; shift
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AR_LIB=$1 ; shift
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AR_LIB_NAME=$(basename $AR_LIB)
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AR_SO_LIB_NAME=${AR_LIB_NAME/.a/.so}
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AR_LIB_PATH=${AR_LIB/$AR_LIB_NAME/}
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if [ "$AR_LIB_PATH" = "" ] ; then
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AR_LIB_PATH="."
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fi
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AR_CRUD=${AR_LIB_PATH}/.ar-${AR_LIB_NAME}
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usage='Usage: ar-fake cr libpython.dir obj.o ...
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ar-fake d libpython.dir obj.o ...
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ar-fake so libpython.dir libpython.so'
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AR_CWD=$(pwd)
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# Function to tell is if the arg is an absolute path. Use it like this:
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#
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# if is_abs pathname ; then ...
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is_abs() {
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if [ "$1" != "$(echo $1 | sed -e "s,^/,,")" ] ; then
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return 0
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fi
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return 1
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}
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# Function to build the shared library. It does the right thing for
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# PowerPC or x86 systems running BeOS.
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build_lib() {
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LIB=$1 ; shift
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SO_LIB=${LIB/.a/.so}
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SO_NAME=$1 ; shift
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CRUD_NAME=$1 ; shift
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# maybe too much...
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EXTRA_LIBS="-lroot -lbe -lnet"
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case $BE_HOST_CPU in
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ppc)
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case $(uname -r) in
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4.0*) AR_CC="mwcc -xms -export pragma -nodup" ;;
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*) AR_CC="mwcc -shared -export pragma -nodup" ;;
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esac
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GLUE_LOC=/boot/develop/lib/ppc
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AR_GLUE="${GLUE_LOC}/glue-noinit.a ${GLUE_LOC}/init_term_dyn.o ${GLUE_LOC}/start_dyn.o"
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;;
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x86)
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AR_CC="gcc -nostart -Wl,-soname=${SO_NAME}"
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AR_GLUE=
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;;
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*)
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# Send me the mystery system (soo-pah aitch!), then we'll talk...
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echo "No, no, no... $0 doesn't support $BE_HOST_CPU"
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exit 2
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;;
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esac
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# Build a list of the objects...
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PARTS=""
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while read OBJ_FILE OBJ_PATH ; do
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PARTS="$PARTS ${OBJ_PATH}${OBJ_FILE}"
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done < $CRUD_NAME
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$AR_CC -o $SO_LIB $PARTS $AR_GLUE $EXTRA_LIBS > /dev/null 2>&1
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return 0
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}
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# Make a backup of the old AR_CRUD file, just to be nice, and clean up
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# any of our temp files that may be laying around.
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if [ -e $AR_CRUD ] ; then
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mv -f $AR_CRUD ${AR_CRUD}.old
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cp ${AR_CRUD}.old $AR_CRUD
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else
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touch $AR_CRUD
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fi
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if [ -e ${AR_CRUD}.grepper ] ; then
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rm -f ${AR_CRUD}.grepper
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fi
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case $AR_COMMAND in
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cr)
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# Add the extra bits to the $AR_CRUD file.
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for OBJECT in "$@" ; do
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OBJ_NAME=$(basename $OBJECT)
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OBJ_PATH=${OBJECT%$OBJ_NAME}
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if ! is_abs $OBJ_PATH ; then
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OBJ_PATH=${AR_CWD}/${OBJECT}
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OBJ_PATH=${OBJ_PATH%$OBJ_NAME}
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fi
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# If this is already in there, we have to blow it away so
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# we can replace it with the new one.
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if egrep -q "^$OBJ_NAME " $AR_CRUD ; then
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egrep -v "^$OBJ_NAME " < $AR_CRUD > ${AR_CRUD}.grepper
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mv -f ${AR_CRUD}.grepper $AR_CRUD
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fi
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echo $OBJ_NAME $OBJ_PATH >> $AR_CRUD
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done
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# Now build a library from the files.
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build_lib $AR_LIB $AR_SO_LIB_NAME $AR_CRUD
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;;
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d)
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# Remove files from the $AR_CRUD file. This isn't terribly
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# efficient.
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for OBJECT in "$@" ; do
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OBJ_NAME=$(basename $OBJECT)
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OBJ_PATH=${OBJECT%$OBJ_NAME}
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if ! is_abs $OBJ_PATH ; then
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OBJ_PATH=${AR_CWD}/${OBJECT}
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OBJ_PATH=${OBJ_PATH%$OBJ_NAME}
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fi
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# Strip the objects from the list, if they're in there.
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egrep -v "^$OBJ_NAME " < $AR_CRUD > ${AR_CRUD}.grepper
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mv -f ${AR_CRUD}.grepper $AR_CRUD
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done
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# Now build a library from the remaining objects.
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build_lib $AR_LIB $AR_SO_LIB_NAME $AR_CRUD
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;;
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*)
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echo "$0 error:"
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echo " Unsupported command: $AR_COMMAND"
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exit 1
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;;
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case $# in
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0|1|2)
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echo "$usage" >&2
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exit 1
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;;
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esac
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# If we make it here, all went well. Hopefully.
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exit 0
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command=$1
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library=$2
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shift 2
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case $command in
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cr)
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if test -d $library
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then :
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else
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mkdir $library
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fi
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if cp -p $* $library
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then
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# To force directory modify date, create or delete a file.
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if test -e $library/.tch
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then rm $library/.tch
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else echo tch > $library/.tch
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fi
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exit 0
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fi
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;;
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d)
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if test -d $library
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then
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cd $library
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rm -f $*
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fi
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;;
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so)
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case $BE_HOST_CPU in
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ppc)
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mwld -xms -export pragma -nodup -o $1 $library/*
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;;
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x86)
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gcc -nostart -Wl,-soname=$(basename $1) -o $1 $library/*
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;;
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esac
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status=$?
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cd $(dirname $1)
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ln -sf $PWD lib
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exit $status
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;;
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*)
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echo "$usage" >&2
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exit 1
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;;
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esac
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