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--- tech:slurm [2020/04/08 17:39] – [Modules] kohofer
+++ tech:slurm [2020/04/24 17:38] – [GCC] kohofer
@@ Line 357: / Line 357: @@
 ====== Modules ======
-===== Links =====
+===== GCC =====
+This take a long time!
+Commands to run to compile gcc-6.1.0
+  wget https://ftp.gnu.org/gnu/gcc/gcc-6.1.0/gcc-6.1.0.tar.bz2
+  tar xfj gcc-6.1.0.tar.bz2
+  cd gcc-6.1.0
+  ./contrib/download_prerequisites
+  ./configure --prefix=/opt/package/gcc/6.1.0 --disable-multilib
+  make
+After some time an error occurs, and the make process stops!
+<code>
+...
+In file included from ../.././libgcc/unwind-dw2.c:401:0:
+./md-unwind-support.h: In function ‘x86_64_fallback_frame_state’:
+./md-unwind-support.h:65:47: error: dereferencing pointer to incomplete type ‘struct ucontext’
+       sc = (struct sigcontext *) (void *) &uc_->uc_mcontext;
+                                               ^~
+../.././libgcc/shared-object.mk:14: recipe for target 'unwind-dw2.o' failed
+</code>
+To fix do: [[https://stackoverflow.com/questions/46999900/how-to-compile-gcc-6-4-0-with-gcc-7-2-in-archlinux|solution]]
+  vi /opt/packages/gcc-6.1.0/x86_64-pc-linux-gnu/libgcc/md-unwind-support.h
+and replace/comment out line 61 with this:
+<code>
+struct ucontext_t *uc_ = context->cfa;
+</code>
+old line: /* struct ucontext *uc_ = context->cfa; */
+  make
+Next error:
+<code>
+../../.././libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc:270:22: error: aggregate ‘sigaltstack handler_stack’ has incomplete type and cannot be defined
+   struct sigaltstack handler_stack;
+</code>
+To fix see: [[https://github.com/llvm-mirror/compiler-rt/commit/8a5e425a68de4d2c80ff00a97bbcb3722a4716da?diff=unified|solution]]
+or [[https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81066]]
+Amend the files according to solution above!
+Next error:
+<code>
+...
+checking for unzip... unzip
+configure: error: cannot find neither zip nor jar, cannot continue
+Makefile:23048: recipe for target 'configure-target-libjava' failed
+...
+...
+</code>
+  apt install unzip zip
+and run make again!
+  make
+Next error:
+<code>
+...
+In file included from ../.././libjava/prims.cc:26:0:
+../.././libjava/prims.cc: In function ‘void _Jv_catch_fpe(int, siginfo_t*, void*)’:
+./include/java-signal.h:32:26: error: invalid use of incomplete type ‘struct _Jv_catch_fpe(int, siginfo_t*, void*)::ucontext’
+   gregset_t &_gregs = _uc->uc_mcontext.gregs;    \
+...
+</code>
+Edit the file: /opt/packages/gcc-6.1.0/x86_64-pc-linux-gnu/libjava/include/java-signal.h
+  vi /opt/packages/gcc-6.1.0/x86_64-pc-linux-gnu/libjava/include/java-signal.h
+<note warning>Not enough more errors!</note>
+<code>
+// kh
+  ucontext_t *_uc = (ucontext_t *);                             \
+  //struct ucontext *_uc = (struct ucontext *)_p;                               \
+  // kh
+</code>
+Next error:
+===== Links =====
 http://www.walkingrandomly.com/?p=5680
 https://modules.readthedocs.io/en/latest/index.html