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dnl Usage:
dnl DC_TEST_SHOBJFLAGS(shobjflags, shobjldflags, action-if-not-found)
dnl
AC_DEFUN(DC_TEST_SHOBJFLAGS, [
AC_DEFUN([DC_TEST_SHOBJFLAGS], [
AC_SUBST(SHOBJFLAGS)
AC_SUBST(SHOBJCPPFLAGS)
AC_SUBST(SHOBJLDFLAGS)
OLD_LDFLAGS="$LDFLAGS"
OLD_CFLAGS="$CFLAGS"
OLD_CPPFLAGS="$CPPFLAGS"
SHOBJFLAGS=""
SHOBJCPPFLAGS=""
SHOBJLDFLAGS=""
CFLAGS="$OLD_CFLAGS $1"
CPPFLAGS="$OLD_CPPFLAGS $2"
LDFLAGS="$OLD_LDFLAGS $1 $2"
LDFLAGS="$OLD_LDFLAGS $3"
AC_TRY_LINK([#include <stdio.h>
int unrestst(void);], [ printf("okay\n"); unrestst(); return(0); ], [ SHOBJFLAGS="$1"; SHOBJLDFLAGS="$2" ], [
LDFLAGS="$OLD_LDFLAGS"
$3
])
int unrestst(void);], [ printf("okay\n"); unrestst(); return(0); ], [ SHOBJFLAGS="$1"; SHOBJCPPFLAGS="$2"; SHOBJLDFLAGS="$3" ], [
LDFLAGS="$OLD_LDFLAGS"
CFLAGS="$OLD_CFLAGS"
CPPFLAGS="$OLD_CPPFLAGS"
$4
])
LDFLAGS="$OLD_LDFLAGS"
CFLAGS="$OLD_CFLAGS"
CPPFLAGS="$OLD_CPPFLAGS"
])
AC_DEFUN(DC_GET_SHOBJFLAGS, [
AC_DEFUN([DC_GET_SHOBJFLAGS], [
AC_SUBST(SHOBJFLAGS)
AC_SUBST(SHOBJCPPFLAGS)
AC_SUBST(SHOBJLDFLAGS)
DC_CHK_OS_INFO
AC_MSG_CHECKING(how to create shared objects)
if test -z "$SHOBJFLAGS" -a -z "$SHOBJLDFLAGS"; then
DC_TEST_SHOBJFLAGS([-fPIC -DPIC], [-shared -rdynamic], [
DC_TEST_SHOBJFLAGS([-fPIC -DPIC], [-shared], [
DC_TEST_SHOBJFLAGS([-fPIC -DPIC], [-shared -rdynamic -mimpure-text], [
DC_TEST_SHOBJFLAGS([-fPIC -DPIC], [-shared -mimpure-text], [
DC_TEST_SHOBJFLAGS([-fPIC -DPIC], [-shared -rdynamic -Wl,-G,-z,textoff], [
DC_TEST_SHOBJFLAGS([-fPIC -DPIC], [-shared -Wl,-G,-z,textoff], [
DC_TEST_SHOBJFLAGS([-fPIC -DPIC], [-shared -dynamiclib -flat_namespace -undefined suppress -bind_at_load], [
DC_TEST_SHOBJFLAGS([-fPIC -DPIC], [-dynamiclib -flat_namespace -undefined suppress -bind_at_load], [
DC_TEST_SHOBJFLAGS([-fPIC -DPIC], [-Wl,-dynamiclib -Wl,-flat_namespace -Wl,-undefined,suppress -Wl,-bind_at_load], [
DC_TEST_SHOBJFLAGS([-fPIC -DPIC], [-dynamiclib -flat_namespace -undefined suppress], [
DC_TEST_SHOBJFLAGS([-fPIC -DPIC], [-dynamiclib], [
AC_MSG_RESULT(cant)
AC_MSG_ERROR([We are unable to make shared objects.])
if test -z "$SHOBJFLAGS" -a -z "$SHOBJLDFLAGS" -a -z "$SHOBJCPPFLAGS"; then
DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared -rdynamic], [
DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared], [
DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared -rdynamic -mimpure-text], [
DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared -mimpure-text], [
DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared -rdynamic -Wl,-G,-z,textoff], [
DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared -Wl,-G], [
DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared -dynamiclib -flat_namespace -undefined suppress -bind_at_load], [
DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-dynamiclib -flat_namespace -undefined suppress -bind_at_load], [
DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-Wl,-dynamiclib -Wl,-flat_namespace -Wl,-undefined,suppress -Wl,-bind_at_load], [
DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-dynamiclib -flat_namespace -undefined suppress], [
DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-dynamiclib], [
AC_MSG_RESULT(cant)
AC_MSG_ERROR([We are unable to make shared objects.])
])
])
])
])
])
])
])
])
])
AC_MSG_RESULT($SHOBJLDFLAGS $SHOBJFLAGS)
AC_MSG_RESULT($SHOBJCPPFLAGS $SHOBJFLAGS $SHOBJLDFLAGS)
DC_SYNC_SHLIBOBJS
])
AC_DEFUN([DC_SYNC_SHLIBOBJS], [
AC_SUBST(SHLIBOBJS)
SHLIBOBJS=""
for obj in $LIB@&t@OBJS; do
SHLIBOBJS="$SHLIBOBJS `echo $obj | sed 's/\.o$/_shr.o/g'`"
done
])
AC_DEFUN([DC_SYNC_RPATH], [
OLD_LDFLAGS="$LDFLAGS"
for tryrpath in "-Wl,-rpath" "-Wl,--rpath" "-Wl,-R"; do
LDFLAGS="$OLD_LDFLAGS $tryrpath -Wl,/tmp"
AC_LINK_IFELSE(AC_LANG_PROGRAM([], [ return(0); ]), [
rpathldflags="$tryrpath"
break
])
done
unset tryrpath
LDFLAGS="$OLD_LDFLAGS"
unset OLD_LDFLAGS
ADDLDFLAGS=""
for opt in $LDFLAGS; do
if echo "$opt" | grep '^-L' >/dev/null; then
rpathdir=`echo "$opt" | sed 's@^-L *@@'`
ADDLDFLAGS="$ADDLDFLAGS $rpathldflags -Wl,$rpathdir"
fi
done
unset opt rpathldflags
LDFLAGS="$LDFLAGS $ADDLDFLAGS"
unset ADDLDFLAGS
])
AC_DEFUN(DC_CHK_OS_INFO, [
AC_DEFUN([DC_CHK_OS_INFO], [
AC_CANONICAL_HOST
AC_SUBST(SHOBJEXT)
AC_SUBST(SHOBJFLAGS)
AC_SUBST(SHOBJCPPFLAGS)
AC_SUBST(SHOBJLDFLAGS)
AC_SUBST(CFLAGS)
AC_SUBST(CPPFLAGS)
AC_SUBST(AREXT)
AC_SUBST(SHOBJFLAGS)
AC_SUBST(SHOBJLDFLAGS)
AC_MSG_CHECKING(host operating system)
AC_MSG_RESULT($host_os)
SHOBJEXT="so"
AREXT="a"
SHOBJEXT="so"
AREXT="a"
case $host_os in
darwin*)
SHOBJEXT="dylib"
;;
hpux*)
SHOBJEXT="sl"
;;
mingw*)
SHOBJEXT="dll"
SHOBJFLAGS="-mms-bitfields -DPIC"
SHOBJLDFLAGS='-shared -Wl,--dll -Wl,--enable-auto-image-base -Wl,--output-def,$[@].def,--out-implib,$[@].a'
;;
esac
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