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PR target/42811 * libjava/configure.ac (DLLTOOL): Call AC_CHECK_TOOL. (libgcj_sublib_core_extra_deps): New host-dependent configure var. (LIBGCJ_SUBLIB_CORE_EXTRA_DEPS): AC_SUBST it. * libjava/configure.host (libgcj_sublib_core_extra_deps): Define appropriately on Cygwin and MinGW. (libgcj_sublib_core_extra_deps): Add libgcj-noncore-dummy import stub library on Cygwin and MinGW. * libjava/Makefile.am (LIBJAVA_CORE_EXTRA): Import AC_SUBST'd LIBGCJ_SUBLIB_CORE_EXTRA_DEPS if building sublibs, else define empty. (libgcj_la_DEPENDENCIES): Use it. (DLL_VERSION): New makefile macro. (libgcj-noncore-dummy.dll.a): New build rule for dummy import stub library. (libgcj_noncore_la_LIBADD): Trim superfluous convenience libs. (AM_MAKEFLAGS): Add DLLTOOL recursive propagation. * libjava/libgcj-noncore-dummy.def: New file. * libjava/Makefile.in: Regenerate. * libjava/include/Makefile.in: Likewise. * libjava/testsuite/Makefile.in: Likewise. * libjava/configure: Likewise. * libjava/gcj/Makefile.in: Likewise. From-SVN: r157606
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