File: mklib

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#!/bin/sh

# Make a shared library.
# Basically do a switch/case depending on the OS and make a shared (or static)
# library conforming to that OS.


# Usage:
#   mklib [options] objects ...
# Options:
#   -o LIBRARY    specifies the name of resulting library
#                 ("-o GL" for example, might result in "libGL.so" being made)
#   -major N      specifies major version number (default is 1)
#   -minor N      specifies minor version number (default is 0)
#   -patch N      specifies patch version number (default is 0)
#   -lLIBRARY     specifies a dependency on LIBRARY
#   -LDIR         search in DIR for library dependencies
#   -cplusplus    link with C++ runtime
#   -static       make a static library (default is dynamic/shared)
#   -install DIR  move resulting library file(s) to DIR
#   -arch ARCH    override using `uname` to determine architecture
#   -archopt OPT  specify an extra achitecture-specific option OPT
#   -noprefix     don't prefix library name with "lib" or any suffix
#
# The library name should just be "GL" or "GLU", etc.  The 'lib' prefix
# will be added here if needed, as well as the ".so" or ".a" suffix,
# etc (unless the -noprefix option is used).
#
# objects should be:  foo.o bar.o etc.o
#
# Environment variables recognized:
#   CC   C compiler command
#   CXX  C++ compiler command
#


#
# Option defaults
#
LIBNAME=""
MAJOR=1
MINOR=0
PATCH=""
DEPS=""
CPLUSPLUS=0
STATIC=0
INSTALLDIR="."
ARCH="auto"
ARCHOPT=""
NOPREFIX=0


#
# Parse arguments
#
while true
do
    case $1 in
	'-o')         shift 1; LIBNAME=$1;;
	'-major')     shift 1; MAJOR=$1;;
	'-minor')     shift 1; MINOR=$1;;
	'-patch')     shift 1; PATCH=$1;;
	-l*)          DEPS="$DEPS $1";;
	-L*)          DEPS="$DEPS $1";;
	'-cplusplus') CPLUSPLUS=1;;
	'-static')    STATIC=1;;
	'-install')   shift 1; INSTALLDIR=$1;;
	'-arch')      shift 1; ARCH=$1;;
	'-archopt')   shift 1; ARCHOPT=$1;;
	'-noprefix')  NOPREFIX=1;;
	-*)           echo "mklib: Unknown option: " $1 ; exit 1;;
	*) break
    esac
    shift 1
done
OBJECTS=$@

if [ ${ARCH} = "auto" ] ; then
    ARCH=`uname`
fi


#
# Error checking
#
if [ "x${LIBNAME}" = "x" ] ; then
    echo "mklib: Error: no library name specified"
    exit 1
fi
if [ "x${OBJECTS}" = "x" ] ; then
    echo "mklib: Error: no object files specified"
    exit 1
fi


#
# Debugging info
#
if [  ]  ; then
    echo "-----------------"
    echo ARCH is $ARCH
    echo LIBNAME is $LIBNAME
    echo MAJOR is $MAJOR
    echo MINOR is $MINOR
    echo PATCH is $PATCH
    echo DEPS are $DEPS
    echo "-----------------"
fi


#
# OK, make the library now
#
case $ARCH in

    'Linux' | 'OpenBSD' | 'GNU' | GNU/*)
	# GCC-based environment

	if [ $NOPREFIX = 1 ] ; then
	    # No "lib" or ".so" part
	    echo "mklib: Making" $ARCH "shared library: " ${LIBNAME}
	    #OPTS="-shared -Wl,-soname,${LIBNAME}"  # soname???
	    OPTS="-shared"
            if [ $CPLUSPLUS = 1 ] ; then
                LINK=$CXX
            else
                LINK=$CC
            fi
            rm -f ${LIBNAME}

            # make lib
            ${LINK} ${OPTS} -o ${LIBNAME} ${OBJECTS} ${DEPS}
            # finish up
            FINAL_LIBS="${LIBNAME}"
        elif [ $STATIC = 1 ] ; then
	    LIBNAME="lib${LIBNAME}"     # prefix with "lib"
            echo "mklib: Making" $ARCH "static library: " ${LIBNAME}.a
            LINK="ar"
            OPTS="-ru"
            # make lib
            ${LINK} ${OPTS} ${LIBNAME}.a ${OBJECTS}
	    ranlib ${LIBNAME}.a
            # finish up
            FINAL_LIBS=${LIBNAME}.a
        else
	    LIBNAME="lib${LIBNAME}"     # prefix with "lib"
	    case $ARCH in 'Linux' | 'GNU' | GNU/*)
		OPTS="-Xlinker -Bsymbolic -shared -Wl,-soname,${LIBNAME}.so.${MAJOR}"
	    ;;
	    *)
		OPTS="-shared -Wl,-soname,${LIBNAME}.so.${MAJOR}"
	    ;;
            esac
	    if [ x${PATCH} = "x" ] ; then
		VERSION="${MAJOR}.${MINOR}"
	    else
		VERSION="${MAJOR}.${MINOR}.${PATCH}"
	    fi

            echo "mklib: Making" $ARCH "shared library: " ${LIBNAME}.so.${VERSION}

            if [ $CPLUSPLUS = 1 ] ; then
                LINK=$CXX
            else
                LINK=$CC
            fi

            # rm any old libs
            rm -f ${LIBNAME}.so.${VERSION}
            rm -f ${LIBNAME}.so.${MAJOR}
            rm -f ${LIBNAME}.so

            # make lib
            ${LINK} ${LDFLAGS} ${OPTS} -o ${LIBNAME}.so.${VERSION} ${OBJECTS} ${DEPS}
            # make usual symlinks
            ln -s ${LIBNAME}.so.${VERSION} ${LIBNAME}.so.${MAJOR}
            ln -s ${LIBNAME}.so.${MAJOR} ${LIBNAME}.so
            # finish up
            FINAL_LIBS="${LIBNAME}.so.${VERSION} ${LIBNAME}.so.${MAJOR} ${LIBNAME}.so"
        fi
	;;

    'SunOS')
        if [ $STATIC = 1 ] ; then
	    LIBNAME="lib${LIBNAME}.a"
	    echo "mklib: Making SunOS static library: " ${LIBNAME}
	    rm -f ${LIBNAME}
	    ar -ruv ${LIBNAME} ${OBJECTS}
	    FINAL_LIBS=${LIBNAME}
	else
	    LIBNAME="lib${LIBNAME}.so"
	    echo "mklib: Making SunOS shared library: " ${LIBNAME}
	    # XXX OPTS for gcc should be -shared, but that doesn't work.
	    # Using -G does work though.
	    if [ $CPLUSPLUS = 1 ] ; then
		# determine linker and options for C++ code
		if [ "x${CXX}" = "xg++" ] ; then
		    # use g++
		    LINK="g++"
		    OPTS="-G"
		elif [ "x${CXX}" = "xCC" ] ; then
		    # use Sun CC
		    LINK="CC"
		    OPTS="-G"
		elif [ "x${CXX}" = "xc++" ] ; then
		    # use Sun c++
		    LINK="c++"
		    OPTS="-G"
		elif [ `which c++` ] ; then
		    # use Sun c++
		    LINK="c++"
		    OPTS="-G"
		elif [ `type g++` ] ; then
		    # use g++
		    LINK="g++"
		    OPTS="-G"
		else
		    echo "mklib: warning: can't find C++ comiler, trying CC."
		    LINK="CC"
		    OPTS="-G"
		fi
	    elif [ "x${CC}" = "xgcc" ] ; then
		# use gcc for linking
		LINK="gcc"
		OPTS="-G"
	    else
		# use native Sun linker
		LINK="ld"
		OPTS="-G"
	    fi
	    echo "mklib: linker is" ${LINK} ${OPTS}
	    rm -f ${LIBNAME}.${MAJOR} ${LIBNAME}
	    ${LINK} ${OPTS} -o ${LIBNAME}.${MAJOR} ${OBJECTS} ${DEPS}
	    ln -s ${LIBNAME}.${MAJOR} ${LIBNAME}
	    FINAL_LIBS="${LIBNAME}.${MAJOR} ${LIBNAME}"
	fi
	;;

    'FreeBSD')
	if [ $NOPREFIX = 1 ] ; then
	    # No "lib" or ".so" part
	    echo "mklib: Making FreeBSD shared library: " ${LIBNAME}
	    rm -f ${LIBNAME}
	    ld -Bshareable -o ${LIBNAME} ${OBJECTS}
	    FINAL_LIBS=${LIBNAME}
        elif [ $STATIC = 1 ] ; then
	    STLIB="lib${LIBNAME}.a"
	    echo "mklib: Making FreeBSD static library: " ${STLIB}
	    rm -f ${STLIB}
	    ar cq ${STLIB} ${OBJECTS}
	    ranlib ${STLIB}
	    FINAL_LIBS=${STLIB}
	else
	    SHLIB="lib${LIBNAME}.so.${MAJOR}.${MINOR}"
	    echo "mklib: Making FreeBSD shared library: " ${SHLIB}
	    rm -f ${SHLIB}
	    ld -Bshareable -o ${SHLIB} ${OBJECTS}
	    # XXX make lib${LIBNAME}.so.${MAJOR} symlink?
	    FINAL_LIBS=${SHLIB}
	fi
	;;

    'NetBSD')
        if [ $STATIC = 1 ] ; then
	    LIBNAME="lib${LIBNAME}_pic.a"
	    echo "mklib: Making NetBSD PIC static library: " ${LIBNAME}
	    rm -f ${LIBNAME}
	    ar cq ${LIBNAME} ${OBJECTS}
	    ranlib ${LIBNAME}
	    FINAL_LIBS=${LIBNAME}
	else
	    LIBNAME="lib${LIBNAME}.so.${MAJOR}.${MINOR}"
	    echo "mklib: Making NetBSD PIC shared library: " ${LIBNAME}
	    rm -f ${LIBNAME}
	    ld -x -Bshareable -Bforcearchive -o ${LIBNAME} ${OBJECTS}
	    FINAL_LIBS=${LIBNAME}
	fi
	;;

    'IRIX' | 'IRIX64')
        if [ $STATIC = 1 ] ; then
	    LIBNAME="lib${LIBNAME}.a"
	    rm -f ${LIBNAME}
	    ar rc ${LIBNAME} ${OBJECTS}
	    FINAL_LIBS=${LIBNAME}
	else
	    LIBNAME="lib${LIBNAME}.so"  # prefix with "lib", suffix with ".so"
	    if [ $ARCHOPT = "64" ] ; then
		# 64-bit ABI
		OPTS="-64 -shared -all"
		echo "mklib: Making IRIX 64-bit shared library: " ${LIBNAME}
	    elif [ $ARCHOPT = "o32" ] ; then
		# old 32-bit ABI
		OPTS="-32 -shared -all"
		echo "mklib: Making IRIX o32-bit shared library: " ${LIBNAME}
	    else
		# new 32-bit ABI
		OPTS="-n32 -shared -all"
		echo "mklib: Making IRIX n32-bit shared library: " ${LIBNAME}
	    fi
	    if [ $CPLUSPLUS = 1 ] ; then
		LINK="CC"
	    else
		LINK="ld"
	    fi
	    ${LINK} ${OPTS} -o ${LIBNAME} ${OBJECTS} ${DEPS}
	    FINAL_LIBS=${LIBNAME}
	fi
	;;

    'linux-cygwin')
	LIBNAME="lib${LIBNAME}.a"
	echo "mklib: Making linux-cygwin library: " ${LIBNAME}
	rm -f ${LIBNAME}
	gnuwin32ar ruv ${LIBNAME} ${OBJECTS}
	FINAL_LIBS=${LIBNAME}
	;;

    'HP-UX')
        if [ $STATIC = 1 ] ; then
	    LIBNAME="lib${LIBNAME}.a"
	    echo "mklib: Making HP-UX static library: " ${LIBNAME}
	    rm -f ${LIBNAME}
	    ar -ruv ${LIBNAME} ${OBJECTS}
	    FINAL_LIBS=${LIBNAME}
	else
	    RUNLIB="lib${LIBNAME}.${MAJOR}"
	    DEVLIB="lib${LIBNAME}.sl"
	    echo "mklib: Making HP-UX shared library: " ${RUNLIB} ${DEVLIB}
	    ld -b -o ${RUNLIB} +b ${RUNLIB} ${OBJECTS} ${DEPS}
	    ln -s ${RUNLIB} ${DEVLIB}
	    FINAL_LIBS="${RUNLIB} ${DEVLIB}"
	fi
	;;

    'AIX')
        if [ $STATIC = 1 ] ; then
            LIBNAME="lib${LIBNAME}.a"
            echo "mklib: Making AIX static library: " ${LIBNAME}
            ar -ruv ${LIBNAME} ${OBJECTS}
            FINAL_LIBS=${LIBNAME}
        else
	    EXPFILE="lib${LIBNAME}.exp"
	    OFILE=shr.o  #Want to be consistent with the IBM libGL.a
	    LIBNAME="lib${LIBNAME}.a"  # shared objects are still stored in the .a libraries
	    OPTS="-bE:${EXPFILE} -bM:SRE -bnoentry"
	    rm -f ${EXPFILE} ${OFILE}
	    NM="/bin/nm -eC"
	    echo "#! /usr/lib/${LIBNAME}" > ${EXPFILE}
	    ${NM} ${OBJECTS} | awk '{
	    if ((($2 == "T") || ($2 == "D") || ($2 == "B")) \
	    && ( substr($1,1,1) != ".")) {
		    if (substr ($1, 1, 7) != "__sinit" &&
			    substr ($1, 1, 7) != "__sterm") {
			    if (substr ($1, 1, 5) == "__tf1")
				print (substr ($1, 7))
			    else if (substr ($1, 1, 5) == "__tf9")
				print (substr ($1, 15))
			    else
				print $1
			}
		}
	    }' | sort -u >> ${EXPFILE}
	    cc ${OPTS} -o ${OFILE} ${OBJECTS} ${DEPS}
	    ar -r ${LIBNAME} ${OFILE}
            FINAL_LIBS="${LIBNAME}"
        fi
        ;;

    'AIX64')
        if [ $STATIC = 1 ] ; then
            LIBNAME="lib${LIBNAME}.a"
            echo "mklib: Making AIX static library: " ${LIBNAME}
            ar -X64 -ruv ${LIBNAME} ${OBJECTS}
            FINAL_LIBS=${LIBNAME}
        else
            echo "mklib: PROBLEM: AIX64 shared libs not supported!!!"
        fi
        ;;

    'OpenSTEP')
	LIBNAME="lib${LIBNAME}.a"
	echo "mklib: Making OpenSTEP static library: " ${LIBNAME}
	libtool -static -o ${LIBNAME} - ${OBJECTS}
	FINAL_LIBS=${LIBNAME}
	;;

    'OSF1')
        if [ $STATIC = 1 ] ; then
	    LIBNAME="lib${LIBNAME}.a"
	    echo "mklib: Making OSF/1 static library: " ${LIBNAME}
	    rm -f ${LIBNAME}
	    ar -ruv ${LIBNAME} ${OBJECTS}
	    FINAL_LIBS=${LIBNAME}
	else
	    VERSION="${MAJOR}.${MINOR}"
	    LIBNAME="lib${LIBNAME}.so"
	    echo "mklib: Making OSF/1 shared library: " ${LIBNAME}
	    rm -f ${LIBNAME}.${VERSION}
	    ld -o ${LIBNAME}.${VERSION} -shared -no_archive -set_version ${VERSION} -soname ${LIBNAME}.${VERSION} -expect_unresolved \* -all ${OBJECTS} ${DEPS}
	    ln -sf ${LIBNAME}.${VERSION} ${LIBNAME}
	    FINAL_LIBS="${LIBNAME} ${LIBNAME}.${VERSION}"
	fi
	;;

    'Darwin')
        if [ $STATIC = 1 ] ; then
            LIBNAME="lib${LIBNAME}.a"
            echo "mklib: Making Darwin static library: " ${LIBNAME}
            LINK="ar"
            OPTS="-ruv"
            ${LINK} ${OPTS} ${LIBNAME} ${OBJECTS}
            FINAL_LIBS=${LIBNAME}
        else
            LIBNAME="lib${LIBNAME}.dylib"
            echo "mklib: Making Darwin shared library: " ${LIBNAME}
#            FLAGS="-dynamiclib -multiply_defined suppress"
# -single_module required to support uninitialized global variables in common
# (lex and bison do this, unfortunately)
#           FLAGS="-dynamiclib -flat_namespace -single_module"
# but with -fno-common, don't need -single_module, which I don't understand
# actually, why would we want anything but a flat namespace???
# also, don't die if a library like Tcl is undefined at link time ...
            FLAGS="-dynamiclib -flat_namespace -undefined warning"
	    if [ $CPLUSPLUS = 1 ] ; then
		LINK="g++"
	    else
		LINK="cc"
	    fi
            ${LINK} ${FLAGS} -o ${LIBNAME} ${OBJECTS} ${DEPS}
            FINAL_LIBS=${LIBNAME}
        fi
        ;;

    'LynxOS')
	LIBNAME="lib${LIBNAME}.a"
	echo "mklib: Making LynxOS static library: " ${LIBNAME}
	rm -f ${LIBNAME}
	ar ru ${LIBNAME} ${OBJECTS}
	FINAL_LIBS=${LIBNAME}
	;;

    'BeOS')
        if [ $STATIC = 1 ] ; then
            LIBNAME="lib${LIBNAME}.a"
            echo "mklib: Making BeOS static library: " ${LIBNAME}
            ar -cru "${LIBNAME}" ${OBJECTS}
        else
	    LIBNAME="lib${LIBNAME}.so"
	    echo "mklib: Making BeOS shared library: " ${LIBNAME}
	    gcc -nostart -Xlinker "-soname=${LIBNAME}" -L/Be/develop/lib/x86 -lbe ${DEPS} ${OBJECTS} -o "${LIBNAME}"
	    mimeset -f "${LIBNAME}"
	    setversion "${LIBNAME}" -app ${MAJOR} ${MINOR} ${PATCH} -short "Powered by Mesa3D!" -long "Powered by Mesa3D!"
	fi
	FINAL_LIBS=${LIBNAME}
	;;

    'QNX')
	LIBNAME="lib${LIBNAME}.a"
	echo "mklib: Making QNX library: " ${LIBNAME}
	wlib ${LIBNAME} ${OBJECTS}
	FINAL_LIBS=${LIBNAME}
	;;

    'MorphOS')
	LIBNAME="lib${LIBNAME}.a"
	echo "mklib: Making MorphOS library: " ${LIBNAME}
	ppc-morphos-ar rc ${LIBNAME} ${OBJECTS}
	FINAL_LIBS="${LIBNAME}"
	;;

    'icc')
	# Intel C compiler
	LIBNAME="lib${LIBNAME}"     # prefix with "lib"

        if [ $STATIC = 1 ] ; then
            echo "mklib: Making Intel ICC static library: " ${LIBNAME}.a
            LINK="ar"
            OPTS="-ruv"
            # make lib
            ${LINK} ${OPTS} ${LIBNAME}.a ${OBJECTS}
            # finish up
            FINAL_LIBS="${LIBNAME}.a"
        else
            OPTS="-shared"
            VERSION="${MAJOR}.${MINOR}.${PATCH}"
            echo "mklib: Making Intel ICC shared library: " ${LIBNAME}.so.${VERSION}

            if [ $CPLUSPLUS = 1 ] ; then
                LINK="icc"
            else
                LINK="icc"
            fi
            # rm any old libs
            rm -f ${LIBNAME}.so.${VERSION}
            rm -f ${LIBNAME}.so.${MAJOR}
            rm -f ${LIBNAME}.so
            # make lib
            ${LINK} ${OPTS} -o ${LIBNAME}.so.${VERSION} ${OBJECTS} ${DEPS}
            # make usual symlinks
            ln -s ${LIBNAME}.so.${VERSION} ${LIBNAME}.so.${MAJOR}
            ln -s ${LIBNAME}.so.${MAJOR} ${LIBNAME}.so
            # finish up
            FINAL_LIBS="${LIBNAME}.so.${VERSION} ${LIBNAME}.so.${MAJOR} ${LIBNAME}.so"
        fi
	;;

    'aix-gcc')
	# AIX with gcc
        if [ $STATIC = 1 ] ; then
	    LIBNAME="lib${LIBNAME}.a"
	    echo "mklib: Making AIX GCC static library: " ${LIBNAME}
	    rm -f ${LIBNAME}
	    ar ru ${LIBNAME} ${OBJECTS}
	    FINAL_LIBS=${LIBNAME}
	else
	    LIBNAME="lib${LIBNAME}.so"  # prefix with "lib", suffix with ".so"
	    echo "mklib: Making AIX GCC shared library: " ${LIBNAME}
	    # remove old lib
	    rm -f ${LIBNAME}
	    # make the lib
	    gcc -shared -Wl,-G ${OBJECTS} ${DEPS} -o ${LIBNAME}
	    # NOTE: the application linking with this library must specify
	    # the -Wl,-brtl flags to gcc
	    FINAL_LIBS=${LIBNAME}
	fi
	;;

    'ultrix')
	# XXX untested
        if [ $STATIC = 0 ] ; then
	    echo "mklib: Warning shared libs not supported on Ultrix"
	fi
	LIBNAME="lib${LIBNAME}.a"
	echo "mklib: Making static library for Ultrix: " ${LIBNAME}
	rm -f ${LIBNAME}
	ar ru ${LIBNAME} ${OBJECTS}
	FINAL_LIBS="${LIBNAME}"
	;;

     CYGWIN*)
	# GCC-based environment
	CYGNAME="cyg${LIBNAME}"     # prefix with "cyg"
	LIBNAME="lib${LIBNAME}"     # prefix with "lib"

        if [ $STATIC = 1 ] ; then
            echo "mklib: Making" $ARCH "static library: " ${LIBNAME}.a
            LINK="ar"
            OPTS="-ru"
            # make lib
            ${LINK} ${OPTS} ${LIBNAME}.a ${OBJECTS}
	    ranlib ${LIBNAME}.a
            # finish up
            FINAL_LIBS=${LIBNAME}.a
        else
	    OPTS="-shared -Wl,-export-all -Wl,--out-implib=${LIBNAME}-${MAJOR}.dll.a"
            echo "mklib: Making" $ARCH "shared library: " ${LIBNAME}-${MAJOR}.dll

            if [ $CPLUSPLUS = 1 ] ; then
                LINK="g++"
            else
                LINK="gcc"
            fi

            # rm any old libs
            rm -f ${LIBNAME}-${MAJOR}.dll
            rm -f ${LIBNAME}.dll.a
            rm -f ${LIBNAME}.a

            # make lib
            ${LINK} ${OPTS} -o ${CYGNAME}-${MAJOR}.dll ${OBJECTS} ${DEPS}
            # make usual symlinks
            ln -s ${LIBNAME}-${MAJOR}.dll.a ${LIBNAME}.dll.a
            # finish up
            FINAL_LIBS="${LIBNAME}-${MAJOR}.dll.a ${LIBNAME}.dll.a"
	    # special case for installing in bin
            FINAL_BINS="${CYGNAME}-${MAJOR}.dll"
        fi
	;;

    'example')
	# If you're adding support for a new architecture, you can
	# start with this:
        if [ $STATIC = 1 ] ; then
	    LIBNAME="lib${LIBNAME}.a"
	    echo "mklib: Making static library for example arch: " ${LIBNAME}
	    rm -f ${LIBNAME}
	    ar rv ${LIBNAME} ${OBJECTS}
	    FINAL_LIBS="${LIBNAME}"
	else
	    LIBNAME="lib${LIBNAME}.so"  # prefix with "lib"
	    echo "mklib: Making shared library for example arch: " ${LIBNAME}
	    ld -o ${LIBNAME} ${OBJECTS} ${DEPS}
	    FINAL_LIBS="${LIBNAME}"
	fi
	;;

    *)
	echo "mklib: ERROR: Don't know how to make a static/shared library for" ${ARCH}
	echo "mklib: Please add necessary commands to mklib script."
	;;
esac


#
# Put library files into installation directory if specified.
#
if [ ${INSTALLDIR} != "." ] ; then
    echo "mklib: Installing" ${FINAL_LIBS} "in" ${INSTALLDIR}
    mv ${FINAL_LIBS} ${INSTALLDIR}/
fi