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AC_MSG_RESULT([found])
AC_DEFINE(HAVE_ACCEPTABLE_DLADDR, [1], [Define to 1 if you have an acceptable dladdr implementation with dli_fname])
], [
AC_MSG_RESULT([not found])
]
)
])
dnl Usage:
dnl DC_TEST_SHOBJFLAGS(shobjflags, shobjldflags, action-if-not-found)
dnl
AC_DEFUN(DC_TEST_SHOBJFLAGS, [
AC_SUBST(SHOBJFLAGS)
AC_SUBST(SHOBJLDFLAGS)
OLD_LDFLAGS="$LDFLAGS"
SHOBJFLAGS=""
LDFLAGS="$OLD_LDFLAGS $1 $2"
AC_TRY_LINK([#include <stdio.h>
int unrestst(void);], [ printf("okay\n"); unrestst(); return(0); ], [ SHOBJFLAGS="$1"; SHOBJLDFLAGS="$2" ], [
LDFLAGS="$OLD_LDFLAGS"
$3
])
LDFLAGS="$OLD_LDFLAGS"
])
AC_DEFUN(DC_GET_SHOBJFLAGS, [
AC_SUBST(SHOBJFLAGS)
AC_SUBST(SHOBJLDFLAGS)
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.])
])
])
])
])
])
])
])
])
])
])
])
fi
AC_MSG_RESULT($SHOBJLDFLAGS $SHOBJFLAGS)
])
AC_DEFUN(DC_CHK_OS_INFO, [
AC_CANONICAL_HOST
AC_SUBST(SHOBJEXT)
AC_SUBST(AREXT)
AC_SUBST(SHOBJFLAGS)
AC_SUBST(SHOBJLDFLAGS)
AC_MSG_CHECKING(host operating system)
AC_MSG_RESULT($host_os)
SHOBJEXT="so"
AREXT="a"
case $host_os in
darwin*)
SHOBJEXT="dylib"
;;
hpux*)
SHOBJEXT="sl"
;;
mingw*)
SHOBJEXT="dll"
SHOBJFLAGS="-mno-cygwin -mms-bitfields -DPIC"
SHOBJLDFLAGS='-shared -Wl,--dll -Wl,--enable-auto-image-base -Wl,--output-def,$[@].def,--out-implib,$[@].a -Wl,--export-all-symbols -Wl,--add-stdcall-alias'
;;
esac
])
AC_DEFUN(DC_TEST_WHOLE_ARCHIVE_SHARED_LIB, [
SAVE_LIBS="${LIBS}"
LIBS="${WHOLEARCHIVE} $1 ${NOWHOLEARCHIVE} ${SAVE_LIBS}"
AC_LINK_IFELSE(
AC_LANG_PROGRAM([[
]], [[
]]
),
[
LIBS="${SAVE_LIBS}"
$2
], [
LIBS="${SAVE_LIBS}"
$3
]
)
])
AC_DEFUN(DC_CHECK_FOR_WHOLE_ARCHIVE, [
AC_MSG_CHECKING([for how to link whole archive])
SAVE_CFLAGS="${CFLAGS}"
wholearchive=""
for check in "-Wl,--whole-archive -Wl,--no-whole-archive" "-Wl,-z,allextract -Wl,-z,defaultextract"; do
CFLAGS="${SAVE_CFLAGS} ${check}"
AC_LINK_IFELSE(AC_LANG_PROGRAM([], []),
[
wholearchive="${check}"
break
]
)
done
CFLAGS="${SAVE_CFLAGS}"
if test -z "${wholearchive}"; then
AC_MSG_RESULT([not found])
else
AC_MSG_RESULT([${wholearchive}])
WHOLEARCHIVE=`echo "${wholearchive}" | cut -f 1 -d ' '`
NOWHOLEARCHIVE=`echo "${wholearchive}" | cut -f 2 -d ' '`
fi
AC_SUBST(WHOLEARCHIVE)
AC_SUBST(NOWHOLEARCHIVE)
])
|