libgcj build in bootstrap fails on i686-pc-cygwin due to undefined reference
error in boehm-gc library.
libtool: link: /home/LarryR/Build/gcc-4.3.0/gcc/gcj
-B/home/LarryR/Build/gcc-4.3.0/i686-pc-cygwin/libjava/
-B/home/LarryR/Build/gcc-4.3.0/gcc/ -ffloat-store -fomit-frame-pointer -Usun
-march=prescott -pipe -o .libs/jv-convert.exe --main=gnu.gcj.convert.Convert
-shared-libgcc -L/home/LarryR/Build/gcc-4.3.0/i686-pc-cygwin/libjava/.libs
-L/home/LarryR/Build/gcc-4.3.0/i686-pc-cygwin/libjava ./.libs/libgcj.a -ldl -lz
-L/gcc-4.3.0/lib/gcc/i686-pc-cygwin/4.3.0
./.libs/libgcj.a(lt105-misc.o):misc.c:(.text+0xc10): undefined reference to
`_GC_get_thread_stack_base'
collect2: ld returned 1 exit status
This is caused by the following in "boehm-gc":
in "pthread-support.c" line 60 ...
# if defined(GC_PTHREADS) && !defined(GC_SOLARIS_THREADS) \
&& !defined(GC_WIN32_THREADS)
the functions in "pthread-support.c" are not compiled if GC_WIN32_THREADS is
defined, in particular "GC_get_thread_stack_base()" is not compiled.
in "misc.c" line 677 ...
# if defined(GC_PTHREADS) && ! defined(GC_SOLARIS_THREADS)
/* Use thread_stack_base if available, as GC could be initialized from
a thread that is not the "main" thread. */
GC_stackbottom = GC_get_thread_stack_base();
# endif
thus a call to GC_get_thread_stack_base() is generated even though
GC_WIN32_THREADS is defined so that GC_get_thread_stack_base() does not exist,
which breaks the build.
The following patch fixes the problem
--- boehm-gc/misc.c (revision 130402)
+++ boehm-gc/misc.c (working copy)
@@ -674,7 +674,7 @@
# if !defined(THREADS) || defined(GC_PTHREADS) || defined(GC_WIN32_THREADS)
\
|| defined(GC_SOLARIS_THREADS)
if (GC_stackbottom == 0) {
- # if defined(GC_PTHREADS) && ! defined(GC_SOLARIS_THREADS)
+ # if defined(GC_PTHREADS) && ! defined(GC_SOLARIS_THREADS) && !
defined(GC_WIN32_THREADS)
/* Use thread_stack_base if available, as GC could be initialized from
a thread that is not the "main" thread. */
GC_stackbottom = GC_get_thread_stack_base();
--
Summary: bootstrap fails when libgcj enabled due to undefined
reference in libgcjgc (boehm-gc)
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: boehm-gc
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: silver-dad at comcast dot net
GCC build triplet: i686-pc-cygwin
GCC host triplet: i686-pc-cygwin
GCC target triplet: i686-pc-cygwin
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34232
