lib-std.m4 revision 2260:13a8f3836051
1# 2# Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved. 3# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4# 5# This code is free software; you can redistribute it and/or modify it 6# under the terms of the GNU General Public License version 2 only, as 7# published by the Free Software Foundation. Oracle designates this 8# particular file as subject to the "Classpath" exception as provided 9# by Oracle in the LICENSE file that accompanied this code. 10# 11# This code is distributed in the hope that it will be useful, but WITHOUT 12# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14# version 2 for more details (a copy is included in the LICENSE file that 15# accompanied this code). 16# 17# You should have received a copy of the GNU General Public License version 18# 2 along with this work; if not, write to the Free Software Foundation, 19# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20# 21# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22# or visit www.oracle.com if you need additional information or have any 23# questions. 24# 25 26################################################################################ 27# Setup the standard C/C++ runtime libraries. 28# 29# Most importantly, determine if stdc++ should be linked statically or 30# dynamically. 31################################################################################ 32AC_DEFUN_ONCE([LIB_SETUP_STD_LIBS], 33[ 34 # statically link libstdc++ before C++ ABI is stablized on Linux unless 35 # dynamic build is configured on command line. 36 AC_ARG_WITH([stdc++lib], [AS_HELP_STRING([--with-stdc++lib=<static>,<dynamic>,<default>], 37 [force linking of the C++ runtime on Linux to either static or dynamic, default is static with dynamic as fallback])], 38 [ 39 if test "x$with_stdc__lib" != xdynamic && test "x$with_stdc__lib" != xstatic \ 40 && test "x$with_stdc__lib" != xdefault; then 41 AC_MSG_ERROR([Bad parameter value --with-stdc++lib=$with_stdc__lib!]) 42 fi 43 ], 44 [with_stdc__lib=default] 45 ) 46 47 if test "x$OPENJDK_TARGET_OS" = xlinux; then 48 # Test if stdc++ can be linked statically. 49 AC_MSG_CHECKING([if static link of stdc++ is possible]) 50 STATIC_STDCXX_FLAGS="-static-libstdc++ -static-libgcc" 51 AC_LANG_PUSH(C++) 52 OLD_LIBS="$LIBS" 53 LIBS="$STATIC_STDCXX_FLAGS" 54 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])], 55 [has_static_libstdcxx=yes], 56 [has_static_libstdcxx=no]) 57 LIBS="$OLD_LIBS" 58 AC_LANG_POP(C++) 59 AC_MSG_RESULT([$has_static_libstdcxx]) 60 61 if test "x$with_stdc__lib" = xstatic && test "x$has_static_libstdcxx" = xno; then 62 AC_MSG_ERROR([Static linking of libstdc++ was not possible!]) 63 fi 64 65 # If dynamic was requested, it's available since it would fail above otherwise. 66 # If dynamic wasn't requested, go with static unless it isn't available. 67 AC_MSG_CHECKING([how to link with libstdc++]) 68 if test "x$with_stdc__lib" = xdynamic || test "x$has_static_libstdcxx" = xno \ 69 || HOTSPOT_CHECK_JVM_VARIANT(zeroshark); then 70 AC_MSG_RESULT([dynamic]) 71 else 72 LIBCXX="$LIBCXX $STATIC_STDCXX_FLAGS" 73 JVM_LDFLAGS="$JVM_LDFLAGS $STATIC_STDCXX_FLAGS" 74 # Ideally, we should test stdc++ for the BUILD toolchain separately. For now 75 # just use the same setting as for the TARGET toolchain. 76 OPENJDK_BUILD_JVM_LDFLAGS="$OPENJDK_BUILD_JVM_LDFLAGS $STATIC_STDCXX_FLAGS" 77 AC_MSG_RESULT([static]) 78 fi 79 fi 80 81 # libCrun is the c++ runtime-library with SunStudio (roughly the equivalent of gcc's libstdc++.so) 82 if test "x$TOOLCHAIN_TYPE" = xsolstudio && test "x$LIBCXX" = x; then 83 LIBCXX="${SYSROOT}/usr/lib${OPENJDK_TARGET_CPU_ISADIR}/libCrun.so.1" 84 fi 85 86 AC_SUBST(LIBCXX) 87 88 # Setup Windows runtime dlls 89 if test "x$OPENJDK_TARGET_OS" = "xwindows"; then 90 TOOLCHAIN_SETUP_VS_RUNTIME_DLLS 91 fi 92]) 93