# Check for compiler support of 128 bit integers
AC_CHECK_TYPES([__int128_t, __uint128_t], [], [], [])
+# Linker flag to retain the objects of a static lib that are not referenced
+AX_CHECK_LINK_FLAG([-Wl,--whole-archive -Wl,--no-whole-archive],
+ [SR_LINK_BEFORE_LIB=-Wl,--whole-archive
+ SR_LINK_AFTER_LIB=-Wl,--no-whole-archive], [
+AX_CHECK_LINK_FLAG([-Wl,-force_load],
+ [SR_LINK_BEFORE_LIB=-Wl,-force_load
+ SR_LINK_AFTER_LIB=],
+ [SR_LINK_BEFORE_LIB=
+ SR_LINK_AFTER_LIB=])])
+AC_SUBST(SR_LINK_BEFORE_LIB)
+AC_SUBST(SR_LINK_AFTER_LIB)
+
########################
## Hardware drivers ##
########################
AC_CHECK_PROGS([SWIG], [swig swig3.0 swig2.0])
AS_IF([test "x$SWIG" != x],
AC_MSG_CHECKING([for $SWIG version])
- [SWIG_VERSION=`$SWIG -version 2>&1 | sed -n 's/SWIG Version\s*//p'`]
+ [SWIG_VERSION=`$SWIG -version 2>&1 | sed -n 's/SWIG Version //p'`]
AC_MSG_RESULT([$SWIG_VERSION]))
AS_IF([test "x$SWIG" = x],
[SR_APPEND([sr_python_missing], [', '], [SWIG])])