libraries.m4 revision 457:3156dff953b1 
1#
2# Copyright (c) 2011, 2012, 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
26AC_DEFUN_ONCE([LIB_SETUP_INIT],
27[
28        
29###############################################################################
30#
31# OS specific settings that we never will need to probe.
32#
33if test "x$OPENJDK_TARGET_OS" = xlinux; then
34    AC_MSG_CHECKING([what is not needed on Linux?])
35    PULSE_NOT_NEEDED=yes
36    AC_MSG_RESULT([pulse])
37fi
38
39if test "x$OPENJDK_TARGET_OS" = xsolaris; then
40    AC_MSG_CHECKING([what is not needed on Solaris?])
41    ALSA_NOT_NEEDED=yes
42    PULSE_NOT_NEEDED=yes
43    AC_MSG_RESULT([alsa pulse])
44fi
45
46if test "x$OPENJDK_TARGET_OS" = xwindows; then
47    AC_MSG_CHECKING([what is not needed on Windows?])
48    CUPS_NOT_NEEDED=yes    
49    ALSA_NOT_NEEDED=yes
50    PULSE_NOT_NEEDED=yes
51    X11_NOT_NEEDED=yes
52    AC_MSG_RESULT([alsa cups pulse x11])
53fi
54
55if test "x$OPENJDK_TARGET_OS" = xmacosx; then
56    AC_MSG_CHECKING([what is not needed on MacOSX?])
57    ALSA_NOT_NEEDED=yes
58    PULSE_NOT_NEEDED=yes
59    X11_NOT_NEEDED=yes
60    FREETYPE2_NOT_NEEDED=yes    
61    # If the java runtime framework is disabled, then we need X11.
62    # This will be adjusted below.
63    AC_MSG_RESULT([alsa pulse x11])
64fi
65
66if test "x$OPENJDK_TARGET_OS" = xbsd; then
67    AC_MSG_CHECKING([what is not needed on bsd?])
68    ALSA_NOT_NEEDED=yes
69    AC_MSG_RESULT([alsa])    
70fi
71
72if test "x$OPENJDK" = "xfalse"; then
73    FREETYPE2_NOT_NEEDED=yes
74fi
75
76###############################################################################
77#
78# Check for MacOSX support for OpenJDK. If this exists, try to build a JVM
79# that uses this API. 
80#
81AC_ARG_ENABLE([macosx-runtime-support], [AS_HELP_STRING([--disable-macosx-runtime-support],
82	[disable the use of MacOSX Java runtime support framework @<:@enabled@:>@])],
83	[MACOSX_RUNTIME_SUPPORT="${enableval}"],[MACOSX_RUNTIME_SUPPORT="no"])
84
85USE_MACOSX_RUNTIME_SUPPORT=no
86AC_MSG_CHECKING([for explicit Java runtime support in the OS])
87if test -f /System/Library/Frameworks/JavaVM.framework/Frameworks/JavaRuntimeSupport.framework/Headers/JavaRuntimeSupport.h; then
88    if test "x$MACOSX_RUNTIME_SUPPORT" != xno; then
89        MACOSX_RUNTIME_SUPPORT=yes
90        USE_MACOSX_RUNTIME_SUPPORT=yes
91        AC_MSG_RESULT([yes, does not need alsa freetype2 pulse and X11])
92    else
93        AC_MSG_RESULT([yes, but explicitly disabled.])
94    fi
95else
96    AC_MSG_RESULT([no])
97fi
98
99if test "x$OPENJDK_TARGET_OS" = xmacosx && test "x$USE_MACOSX_RUNTIME_SUPPORT" = xno; then
100    AC_MSG_CHECKING([what is not needed on an X11 build on MacOSX?])
101    X11_NOT_NEEDED=
102    FREETYPE2_NOT_NEEDED=
103    AC_MSG_RESULT([alsa pulse])
104fi
105])
106
107AC_DEFUN_ONCE([LIB_SETUP_X11],
108[
109
110###############################################################################
111#
112# Check for X Windows
113#
114
115# Check if the user has specified sysroot, but not --x-includes or --x-libraries.
116# Make a simple check for the libraries at the sysroot, and setup --x-includes and
117# --x-libraries for the sysroot, if that seems to be correct.
118if test "x$SYS_ROOT" != "x/"; then
119  if test "x$x_includes" = xNONE; then
120    if test -f "$SYS_ROOT/usr/X11R6/include/X11/Xlib.h"; then
121      x_includes="$SYS_ROOT/usr/X11R6/include"
122    fi
123  fi
124  if test "x$x_libraries" = xNONE; then
125    if test -f "$SYS_ROOT/usr/X11R6/lib/libX11.so"; then
126      x_libraries="$SYS_ROOT/usr/X11R6/lib"
127    fi
128  fi
129fi
130
131# Now let autoconf do it's magic
132AC_PATH_X
133AC_PATH_XTRA
134
135if test "x$no_x" = xyes && test "x$X11_NOT_NEEDED" != xyes; then 
136    HELP_MSG_MISSING_DEPENDENCY([x11])
137    AC_MSG_ERROR([Could not find X11 libraries. $HELP_MSG])
138fi
139
140# Some of the old makefiles require a setting of OPENWIN_HOME
141# Since the X11R6 directory has disappeared on later Linuxes,
142# we need to probe for it.
143if test "x$OPENJDK_TARGET_OS" = xlinux; then
144    if test -d "$SYS_ROOT/usr/X11R6"; then
145        OPENWIN_HOME="$SYS_ROOT/usr/X11R6"
146    fi
147    if test -d "$SYS_ROOT/usr/include/X11"; then
148        OPENWIN_HOME="$SYS_ROOT/usr"
149    fi
150fi
151if test "x$OPENJDK_TARGET_OS" = xsolaris; then
152    OPENWIN_HOME="/usr/openwin"
153fi
154AC_SUBST(OPENWIN_HOME)
155
156
157#
158# Weird Sol10 something check...TODO change to try compile
159#
160if test "x${OPENJDK_TARGET_OS}" = xsolaris; then
161  if test "`uname -r`" = "5.10"; then
162     if test "`${EGREP} -c XLinearGradient ${OPENWIN_HOME}/share/include/X11/extensions/Xrender.h`" = "0"; then
163     	X_CFLAGS="${X_CFLAGS} -DSOLARIS10_NO_XRENDER_STRUCTS"
164     fi
165  fi
166fi
167
168AC_LANG_PUSH(C)
169OLD_CFLAGS="$CFLAGS"
170CFLAGS="$CFLAGS $X_CFLAGS"
171AC_CHECK_HEADERS([X11/extensions/shape.h X11/extensions/Xrender.h X11/extensions/XTest.h],
172                [X11_A_OK=yes],
173                [X11_A_OK=no])
174CFLAGS="$OLD_CFLAGS"
175AC_LANG_POP(C)
176
177if test "x$X11_A_OK" = xno && test "x$X11_NOT_NEEDED" != xyes; then 
178    HELP_MSG_MISSING_DEPENDENCY([x11])
179    AC_MSG_ERROR([Could not find all X11 headers (shape.h Xrender.h XTest.h). $HELP_MSG])
180fi
181
182AC_SUBST(X_CFLAGS)
183AC_SUBST(X_LIBS)
184])
185
186AC_DEFUN_ONCE([LIB_SETUP_CUPS],
187[
188
189###############################################################################
190#
191# The common unix printing system cups is used to print from java.
192#
193AC_ARG_WITH(cups, [AS_HELP_STRING([--with-cups],
194    [specify prefix directory for the cups package
195	 (expecting the libraries under PATH/lib and the headers under PATH/include)])])
196AC_ARG_WITH(cups-include, [AS_HELP_STRING([--with-cups-include],
197	[specify directory for the cups include files])])
198AC_ARG_WITH(cups-lib, [AS_HELP_STRING([--with-cups-lib],
199	[specify directory for the cups library])])
200
201if test "x$CUPS_NOT_NEEDED" = xyes; then
202	if test "x${with_cups}" != x || test "x${with_cups_include}" != x || test "x${with_cups_lib}" != x; then
203		AC_MSG_WARN([cups not used, so --with-cups is ignored])
204	fi
205	CUPS_CFLAGS=
206	CUPS_LIBS=
207else
208	CUPS_FOUND=no
209
210	if test "x${with_cups}" = xno || test "x${with_cups_include}" = xno || test "x${with_cups_lib}" = xno; then
211	    AC_MSG_ERROR([It is not possible to disable the use of cups. Remove the --without-cups option.])
212	fi
213
214	if test "x${with_cups}" != x; then
215	    CUPS_LIBS="-L${with_cups}/lib -lcups"
216	    CUPS_CFLAGS="-I${with_cups}/include"
217	    CUPS_FOUND=yes
218	fi
219	if test "x${with_cups_include}" != x; then
220	    CUPS_CFLAGS="-I${with_cups_include}"
221	    CUPS_FOUND=yes
222	fi
223	if test "x${with_cups_lib}" != x; then
224	    CUPS_LIBS="-L${with_cups_lib} -lcups"
225	    CUPS_FOUND=yes
226	fi
227	if test "x$CUPS_FOUND" = xno; then
228	    BDEPS_CHECK_MODULE(CUPS, cups, xxx, [CUPS_FOUND=yes])
229	fi
230	if test "x$CUPS_FOUND" = xno; then
231	    # Are the cups headers installed in the default /usr/include location?
232	    AC_CHECK_HEADERS([cups/cups.h cups/ppd.h],
233	                     [CUPS_FOUND=yes
234	                      CUPS_CFLAGS=
235	                      CUPS_LIBS="-lcups"
236	                      DEFAULT_CUPS=yes])
237	fi
238	if test "x$CUPS_FOUND" = xno; then
239	    # Getting nervous now? Lets poke around for standard Solaris third-party
240	    # package installation locations.
241	    AC_MSG_CHECKING([for cups headers and libs])
242	    if test -s /opt/sfw/cups/include/cups/cups.h; then
243	       # An SFW package seems to be installed!
244	       CUPS_FOUND=yes
245	       CUPS_CFLAGS="-I/opt/sfw/cups/include"
246	       CUPS_LIBS="-L/opt/sfw/cups/lib -lcups"
247	    elif test -s /opt/csw/include/cups/cups.h; then
248	       # A CSW package seems to be installed!
249	       CUPS_FOUND=yes
250	       CUPS_CFLAGS="-I/opt/csw/include"
251	       CUPS_LIBS="-L/opt/csw/lib -lcups"
252	    fi
253	    AC_MSG_RESULT([$CUPS_FOUND])
254	fi
255	if test "x$CUPS_FOUND" = xno; then 
256	    HELP_MSG_MISSING_DEPENDENCY([cups])
257	    AC_MSG_ERROR([Could not find cups! $HELP_MSG ])
258	fi
259fi
260
261AC_SUBST(CUPS_CFLAGS)
262AC_SUBST(CUPS_LIBS)
263
264])
265
266AC_DEFUN_ONCE([LIB_SETUP_FREETYPE],
267[
268
269###############################################################################
270#
271# The ubiquitous freetype2 library is used to render fonts.
272#
273AC_ARG_WITH(freetype, [AS_HELP_STRING([--with-freetype],
274	[specify prefix directory for the freetype2 package
275     (expecting the libraries under PATH/lib and the headers under PATH/include)])])
276
277# If we are using the OS installed system lib for freetype, then we do not need to copy it to the build tree
278USING_SYSTEM_FT_LIB=false
279
280if test "x$FREETYPE2_NOT_NEEDED" = xyes; then
281	if test "x$with_freetype" != x || test "x$with_freetype_include" != x || test "x$with_freetype_lib" != x; then
282		AC_MSG_WARN([freetype not used, so --with-freetype is ignored])
283	fi
284	FREETYPE2_CFLAGS=
285	FREETYPE2_LIBS=
286        FREETYPE2_LIB_PATH=
287else
288	FREETYPE2_FOUND=no
289
290	if test "x$with_freetype" != x; then
291            SPACESAFE(with_freetype,[the path to freetype])
292	    FREETYPE2_LIBS="-L$with_freetype/lib -lfreetype"
293            if test "x$OPENJDK_TARGET_OS" = xwindows; then
294                FREETYPE2_LIBS="$with_freetype/lib/freetype.lib"
295            fi
296            FREETYPE2_LIB_PATH="$with_freetype/lib"
297	    FREETYPE2_CFLAGS="-I$with_freetype/include"
298            if test -s $with_freetype/include/ft2build.h && test -d $with_freetype/include/freetype2/freetype; then
299                FREETYPE2_CFLAGS="-I$with_freetype/include/freetype2 -I$with_freetype/include"
300            fi
301	    FREETYPE2_FOUND=yes
302   	    if test "x$FREETYPE2_FOUND" = xyes; then
303	        # Verify that the directories exist 
304                if ! test -d "$with_freetype/lib" || ! test -d "$with_freetype/include"; then
305		   AC_MSG_ERROR([Could not find the expected directories $with_freetype/lib and $with_freetype/include])
306		fi
307	        # List the contents of the lib.
308		FREETYPELIB=`ls $with_freetype/lib/libfreetype.so $with_freetype/lib/freetype.dll 2> /dev/null`
309                if test "x$FREETYPELIB" = x; then
310		   AC_MSG_ERROR([Could not find libfreetype.se nor freetype.dll in $with_freetype/lib])
311		fi
312	        # Check one h-file
313                if ! test -s "$with_freetype/include/ft2build.h"; then
314		   AC_MSG_ERROR([Could not find $with_freetype/include/ft2build.h])
315		fi
316            fi
317        fi
318	if test "x$FREETYPE2_FOUND" = xno; then
319	    BDEPS_CHECK_MODULE(FREETYPE2, freetype2, xxx, [FREETYPE2_FOUND=yes], [FREETYPE2_FOUND=no])
320            USING_SYSTEM_FT_LIB=true
321	fi
322	if test "x$FREETYPE2_FOUND" = xno; then
323	    PKG_CHECK_MODULES(FREETYPE2, freetype2, [FREETYPE2_FOUND=yes], [FREETYPE2_FOUND=no])
324            USING_SYSTEM_FT_LIB=true
325	fi
326	if test "x$FREETYPE2_FOUND" = xno; then
327	    AC_MSG_CHECKING([for freetype in some standard locations])
328	
329	    if test -s /usr/X11/include/ft2build.h && test -d /usr/X11/include/freetype2/freetype; then
330	        DEFAULT_FREETYPE_CFLAGS="-I/usr/X11/include/freetype2 -I/usr/X11/include"
331	        DEFAULT_FREETYPE_LIBS="-L/usr/X11/lib -lfreetype"
332	    fi
333	    if test -s /usr/include/ft2build.h && test -d /usr/include/freetype2/freetype; then
334	        DEFAULT_FREETYPE_CFLAGS="-I/usr/include/freetype2"
335	        DEFAULT_FREETYPE_LIBS="-lfreetype"
336	    fi
337	
338	    PREV_CXXCFLAGS="$CXXFLAGS"
339	    PREV_LDFLAGS="$LDFLAGS"
340	    CXXFLAGS="$CXXFLAGS $DEFAULT_FREETYPE_CFLAGS"
341	    LDFLAGS="$LDFLAGS $DEFAULT_FREETYPE_LIBS"
342	    AC_LINK_IFELSE([AC_LANG_SOURCE([[#include<ft2build.h>
343	                    #include FT_FREETYPE_H 
344	                   int main() { return 0; }
345	                  ]])],
346	                  [
347	                      # Yes, the default cflags and libs did the trick.
348	                      FREETYPE2_FOUND=yes
349	                      FREETYPE2_CFLAGS="$DEFAULT_FREETYPE_CFLAGS"
350	                      FREETYPE2_LIBS="$DEFAULT_FREETYPE_LIBS"
351	                  ],
352	                  [
353	                      FREETYPE2_FOUND=no
354	                  ])
355            CXXCFLAGS="$PREV_CXXFLAGS"
356	    LDFLAGS="$PREV_LDFLAGS"
357	    AC_MSG_RESULT([$FREETYPE2_FOUND])
358            USING_SYSTEM_FT_LIB=true
359	fi
360	if test "x$FREETYPE2_FOUND" = xno; then
361		HELP_MSG_MISSING_DEPENDENCY([freetype2])
362		AC_MSG_ERROR([Could not find freetype2! $HELP_MSG ])
363	fi    
364fi
365
366AC_SUBST(USING_SYSTEM_FT_LIB)
367AC_SUBST(FREETYPE2_LIB_PATH)
368AC_SUBST(FREETYPE2_CFLAGS)
369AC_SUBST(FREETYPE2_LIBS)
370
371])
372
373AC_DEFUN_ONCE([LIB_SETUP_ALSA],
374[
375
376###############################################################################
377#
378# Check for alsa headers and libraries. Used on Linux/GNU systems.
379#
380AC_ARG_WITH(alsa, [AS_HELP_STRING([--with-alsa],
381	[specify prefix directory for the alsa package
382	 (expecting the libraries under PATH/lib and the headers under PATH/include)])])
383AC_ARG_WITH(alsa-include, [AS_HELP_STRING([--with-alsa-include],
384	[specify directory for the alsa include files])])
385AC_ARG_WITH(alsa-lib, [AS_HELP_STRING([--with-alsa-lib],
386	[specify directory for the alsa library])])
387
388if test "x$ALSA_NOT_NEEDED" = xyes; then
389	if test "x${with_alsa}" != x || test "x${with_alsa_include}" != x || test "x${with_alsa_lib}" != x; then
390		AC_MSG_WARN([alsa not used, so --with-alsa is ignored])
391	fi
392	ALSA_CFLAGS=
393	ALSA_LIBS=
394else
395	ALSA_FOUND=no
396
397	if test "x${with_alsa}" = xno || test "x${with_alsa_include}" = xno || test "x${with_alsa_lib}" = xno; then
398	    AC_MSG_ERROR([It is not possible to disable the use of alsa. Remove the --without-alsa option.])
399	fi
400
401	if test "x${with_alsa}" != x; then
402	    ALSA_LIBS="-L${with_alsa}/lib -lalsa"
403	    ALSA_CFLAGS="-I${with_alsa}/include"
404	    ALSA_FOUND=yes
405	fi
406	if test "x${with_alsa_include}" != x; then
407	    ALSA_CFLAGS="-I${with_alsa_include}"
408	    ALSA_FOUND=yes
409	fi
410	if test "x${with_alsa_lib}" != x; then
411	    ALSA_LIBS="-L${with_alsa_lib} -lalsa"
412	    ALSA_FOUND=yes
413	fi
414	if test "x$ALSA_FOUND" = xno; then
415	    BDEPS_CHECK_MODULE(ALSA, alsa, xxx, [ALSA_FOUND=yes], [ALSA_FOUND=no])
416	fi
417	if test "x$ALSA_FOUND" = xno; then
418	    PKG_CHECK_MODULES(ALSA, alsa, [ALSA_FOUND=yes], [ALSA_FOUND=no])
419	fi
420	if test "x$ALSA_FOUND" = xno; then
421	    AC_CHECK_HEADERS([alsa/asoundlib.h],
422	                     [ALSA_FOUND=yes
423	                      ALSA_CFLAGS=-Iignoreme
424	                      ALSA_LIBS=-lasound
425	                      DEFAULT_ALSA=yes],
426	                     [ALSA_FOUND=no])
427	fi
428	if test "x$ALSA_FOUND" = xno; then 
429	    HELP_MSG_MISSING_DEPENDENCY([alsa])
430	    AC_MSG_ERROR([Could not find alsa! $HELP_MSG ])
431	fi    
432fi
433
434AC_SUBST(ALSA_CFLAGS)
435AC_SUBST(ALSA_LIBS)
436
437])
438
439AC_DEFUN_ONCE([LIB_SETUP_MISC_LIBS],
440[
441
442###############################################################################
443#
444# Check for the jpeg library
445#
446
447USE_EXTERNAL_LIBJPEG=true
448AC_CHECK_LIB(jpeg, main, [],
449             [ USE_EXTERNAL_LIBJPEG=false
450               AC_MSG_NOTICE([Will use jpeg decoder bundled with the OpenJDK source])
451             ])
452AC_SUBST(USE_EXTERNAL_LIBJPEG)
453        
454###############################################################################
455#
456# Check for the gif library
457#
458
459USE_EXTERNAL_LIBJPEG=true
460AC_CHECK_LIB(gif, main, [],
461             [ USE_EXTERNAL_LIBGIF=false
462               AC_MSG_NOTICE([Will use gif decoder bundled with the OpenJDK source])
463             ])
464AC_SUBST(USE_EXTERNAL_LIBGIF)
465
466###############################################################################
467#
468# Check for the zlib library
469#
470
471AC_ARG_WITH(zlib, [AS_HELP_STRING([--with-zlib],
472	[use zlib from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])
473
474AC_CHECK_LIB(z, compress,
475             [ ZLIB_FOUND=yes ],
476             [ ZLIB_FOUND=no ])
477
478AC_MSG_CHECKING([for which zlib to use])
479
480DEFAULT_ZLIB=bundled
481if test "x$OPENJDK_TARGET_OS" = xmacosx; then
482#
483# On macosx default is system...on others default is 
484#
485    DEFAULT_ZLIB=system
486fi
487
488if test "x${ZLIB_FOUND}" != "xyes"; then
489#
490# If we don't find any system...set default to bundled
491#
492    DEFAULT_ZLIB=bundled
493fi
494
495#
496# If user didn't specify, use DEFAULT_ZLIB
497#
498if test "x${with_zlib}" = "x"; then
499    with_zlib=${DEFAULT_ZLIB}
500fi
501
502if test "x${with_zlib}" = "xbundled"; then
503    USE_EXTERNAL_LIBZ=false
504    AC_MSG_RESULT([bundled])
505elif test "x${with_zlib}" = "xsystem"; then
506    if test "x${ZLIB_FOUND}" = "xyes"; then
507        USE_EXTERNAL_LIBZ=true
508        AC_MSG_RESULT([system])
509    else
510        AC_MSG_RESULT([system not found])
511        AC_MSG_ERROR([--with-zlib=system specified, but no zlib found!])  
512    fi
513else
514    AC_MSG_ERROR([Invalid value for --with-zlib: ${with_zlib}, use 'system' or 'bundled'])  
515fi
516
517AC_SUBST(USE_EXTERNAL_LIBZ)
518
519###############################################################################
520LIBZIP_CAN_USE_MMAP=true
521if test "x$JDK_VARIANT" = "xembedded"; then
522   LIBZIP_CAN_USE_MMAP=false
523fi
524AC_SUBST(LIBZIP_CAN_USE_MMAP)
525
526###############################################################################
527#
528# Check if altzone exists in time.h
529#
530
531AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <time.h>], [return (int)altzone;])],
532            [has_altzone=yes],
533            [has_altzone=no])
534if test "x$has_altzone" = xyes; then
535    AC_DEFINE([HAVE_ALTZONE], 1, [Define if you have the external 'altzone' variable in time.h])
536fi
537
538###############################################################################
539#
540# Check the maths library
541#
542
543AC_CHECK_LIB(m, cos, [],
544             [ 
545                  AC_MSG_NOTICE([Maths library was not found])
546             ])
547AC_SUBST(LIBM)
548
549###############################################################################
550#
551# Check for libdl.so
552
553save_LIBS="$LIBS"
554LIBS=""
555AC_CHECK_LIB(dl,dlopen)
556LIBDL="$LIBS"
557AC_SUBST(LIBDL)
558LIBS="$save_LIBS"
559
560])
561
562AC_DEFUN_ONCE([LIB_SETUP_STATIC_LINK_LIBSTDCPP],
563[
564###############################################################################
565#
566# statically link libstdc++ before C++ ABI is stablized on Linux unless 
567# dynamic build is configured on command line.
568#
569AC_ARG_ENABLE([static-link-stdc++], [AS_HELP_STRING([--disable-static-link-stdc++],
570	[disable static linking of the C++ runtime on Linux @<:@enabled@:>@])],,
571	[
572		enable_static_link_stdc__=yes
573    ])
574
575if test "x$OPENJDK_TARGET_OS" = xlinux; then
576    # Test if -lstdc++ works.
577    AC_MSG_CHECKING([if dynamic link of stdc++ is possible])
578    AC_LANG_PUSH(C++)
579    OLD_CXXFLAGS="$CXXFLAGS"
580    CXXFLAGS="$CXXFLAGS -lstdc++"
581    AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
582            [has_dynamic_libstdcxx=yes],
583            [has_dynamic_libstdcxx=no])
584    CXXFLAGS="$OLD_CXXFLAGS"
585    AC_LANG_POP(C++)
586    AC_MSG_RESULT([$has_dynamic_libstdcxx])
587
588    # Test if stdc++ can be linked statically.
589    AC_MSG_CHECKING([if static link of stdc++ is possible])
590    STATIC_STDCXX_FLAGS="-Wl,-Bstatic -lstdc++ -lgcc -Wl,-Bdynamic"
591    AC_LANG_PUSH(C++)
592    OLD_LIBS="$LIBS"
593    OLD_CXX="$CXX"
594    LIBS="$STATIC_STDCXX_FLAGS"
595    CXX="$CC"                       
596    AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
597            [has_static_libstdcxx=yes],
598            [has_static_libstdcxx=no])
599    LIBS="$OLD_LIBS"
600    CXX="$OLD_CXX"
601    AC_LANG_POP(C++)
602    AC_MSG_RESULT([$has_static_libstdcxx])
603
604    if test "x$has_static_libcxx" = xno && test "x$has_dynamic_libcxx" = xno; then
605        AC_MSG_ERROR([I cannot link to stdc++! Neither dynamically nor statically.])
606    fi
607
608    if test "x$enable_static_link_stdc__" = xyes && test "x$has_static_libstdcxx" = xno; then
609        AC_MSG_NOTICE([Static linking of libstdc++ was not possible reverting to dynamic linking.])
610        enable_static_link_stdc__=no
611    fi
612
613    if test "x$enable_static_link_stdc__" = xno && test "x$has_dynamic_libstdcxx" = xno; then
614        AC_MSG_NOTICE([Dynamic linking of libstdc++ was not possible reverting to static linking.])
615        enable_static_link_stdc__=yes
616    fi
617
618    AC_MSG_CHECKING([how to link with libstdc++])
619    if test "x$enable_static_link_stdc__" = xyes; then
620        LIBCXX="$LIBCXX $STATIC_STDCXX_FLAGS"
621        LDCXX="$CC"
622        AC_MSG_RESULT([static])
623    else
624        LIBCXX="$LIBCXX -lstdc++"
625        LDCXX="$CXX"
626        AC_MSG_RESULT([dynamic])
627    fi
628fi
629
630# libCrun is the c++ runtime-library with SunStudio (roughly the equivalent of gcc's libstdc++.so)
631if test "x$OPENJDK_TARGET_OS" = xsolaris && test "x$LIBCXX" = x; then
632    LIBCXX="/usr/lib${LEGACY_OPENJDK_TARGET_CPU3}/libCrun.so.1"
633fi
634
635# TODO better (platform agnostic) test
636if test "x$OPENJDK_TARGET_OS" = xmacosx && test "x$LIBCXX" = x && test "x$GCC" = xyes; then
637    LIBCXX="-lstdc++"
638fi
639
640AC_SUBST(LIBCXX)
641
642])
643