diff -Bwr chicken-4.5.7/Makefile.solaris chicken-4.5.7-org/Makefile.solaris
44,45c44
< C_COMPILER_OPTIONS ?= -errtags -xdebugformat=stabs -xannotate=no -DHAVE_CHICKEN_CONFIG_H 
< else
---
> C_COMPILER_OPTIONS ?= -errtags -DHAVE_CHICKEN_CONFIG_H
46a46
> else
58c58
< C_COMPILER_OPTIMIZATION_OPTIONS += -g -xO4
---
> C_COMPILER_OPTIMIZATION_OPTIONS ?= -xdebugformat=stabs -xannotate=no -g -xO4
64c64
< C_COMPILER_OPTIMIZATION_OPTIONS += -g -xO3
---
> C_COMPILER_OPTIMIZATION_OPTIONS ?= -xannotate=no -xO3
72,73c72,73
< LINKER_LINK_SHARED_LIBRARY_OPTIONS = -xannotate=no -G
< LINKER_LINK_SHARED_DLOADABLE_OPTIONS = -xannotate=no -G
---
> LINKER_LINK_SHARED_LIBRARY_OPTIONS = -G
> LINKER_LINK_SHARED_DLOADABLE_OPTIONS = -G
80c80
< LIBRARIES = -lsocket -lnsl -lm -ldl
---
> LIBRARIES = -lrt -lsocket -lnsl -lm -ldl

diff -Bwr chicken-4.5.7/runtime.c chicken-4.5.7-org/runtime.c
2618,2623d2617
< #ifdef __SUNPRO_C
< static void mark(C_word *x) { \
<   C_word *_x = (x), _val = *_x; \
<   if(!C_immediatep(_val)) really_mark(_x); \
< }
< #else
2629c2623
< #endif
---
> 
3091,3096d3084
< #ifdef __SUNPRO_C
< static void remark(C_word *x) { \
<   C_word *_x = (x), _val = *_x; \
<   if(!C_immediatep(_val)) really_remark(_x); \
< }
< #else
3102c3090
< #endif
---
>