gdb 7.12 doesn't compile as C++ (tried with g++ 4.9) on Solaris (tried 10 and 12, sparc and x86). The following patch (relative to the 7.12 release, though I expect most if not all issues to be present on trunk, too) fixes this. Only a few of the changes bear explanation: * Initially, compilation failed whereever defs.h. was included: In file included from /vol/src/gnu/gdb/gdb-7.12/gdb/gdb.c:19:0: /vol/src/gnu/gdb/gdb-7.12/gdb/defs.h:630:33: error: 'double atof(const char*)' conflicts with a previous declaration extern double atof (const char *); /* X3.159-1989 4.10.1.1 */ ^ In file included from /usr/include/stdlib.h:17:0, from build-gnulib/import/stdlib.h:36, from /vol/src/gnu/gdb/gdb-7.12/gdb/common/common-defs.h:32, from /vol/src/gnu/gdb/gdb-7.12/gdb/defs.h:28, from /vol/src/gnu/gdb/gdb-7.12/gdb/gdb.c:19: /vol/gcc-4.9/lib/gcc/i386-pc-solaris2.10/4.9.0/include-fixed/iso/stdlib_iso.h:119:15: note: previous declaration 'double std::atof(const char*)' extern double atof(const char *); ^ This is due to this gem in gdb/defs.h which seems to have been present like forever: #ifndef atof extern double atof (const char *); /* X3.159-1989 4.10.1.1 */ #endif In the Solaris headers, the appropriate functions are in namespace std, thus the conflict. I've wrapped the defs.h declaration in !__cplusplus to avoid this; perhaps it can go completely instead. * All the casts are necessary to appease g++ and should be pretty obvious. * The sol-thread.c changes are here to handle /vol/src/gnu/gdb/gdb-7.12/gdb/sol-thread.c: In function 'void _initialize_sol_thread()': /vol/src/gnu/gdb/gdb-7.12/gdb/sol-thread.c:1252:36: error: invalid conversion from 'void*' to 'void (*)(int)' [-fpermissive] if (!(p_##X = dlsym (dlhandle, #X))) \ ^ /vol/src/gnu/gdb/gdb-7.12/gdb/sol-thread.c:1255:3: note: in expansion of macro 'resolve' resolve (td_log); ^ and are modeled after linux-thread-db.c (try_thread_db_load_1). The patch allowed both 32 and 64-bit C++ builds on sparc-sun-solaris2.10 and i386-pc-solaris2.10 to complete. The resulting binary hasn't seen more than a smoke test (invoke it on itself, b main, run) yet. Ok for mainline and 7.12 branch? Besides, when I compiled with g++ 4.9 installed into a non-default location, gdb wouldn't run initially since libstdc++.so.6 and libgcc_s.so.1 weren't found. Maybe it would be good to handle this as gcc does and just link with -static-libstdc++ -static-libgcc? Rainer -- ----------------------------------------------------------------------------- Rainer Orth, Center for Biotechnology, Bielefeld University 2016-10-14 Rainer Orth * defs.h (atof): Wrap in !__cplusplus. * procfs.c (do_destroy_procinfo_cleanup): Add cast. (sysset_t_alloc): Likewise. (proc_set_traced_sysentry): Likewise. (proc_set_traced_sysexit): Likewise. [!PIOCLSTATUS && NEW_PROC_API] (do_closedir_cleanup): Likewise. (procfs_wait): Use GDB_SIGNAL_0. (procfs_corefile_thread_callback): Add cast. * sol-thread.c (td_log_ftype, td_ta_new_ftype, td_ta_delete_ftype) (td_init_ftype, td_ta_get_ph_ftype, td_ta_get_nthreads_ftype) (td_ta_tsd_iter_ftype, td_ta_thr_iter_ftype) (td_thr_validate_ftype, td_thr_tsd_ftype, td_thr_get_info_ftype) (td_thr_getfpregs_ftype, td_thr_getxregsize_ftype) (td_thr_getxregs_ftype, td_thr_sigsetmask_ftype) (td_thr_setprio_ftype, td_thr_setsigpending_ftype) (td_thr_setfpregs_ftype, td_thr_setxregs_ftype) (td_ta_map_id2thr_ftype, td_ta_map_lwp2thr_ftype) (td_thr_getgregs_ftype, td_thr_setgregs_ftype): New typedefs. (p_td_log, p_td_ta_new, p_td_ta_delete, p_td_init, p_td_ta_get_ph) (p_td_ta_get_nthreads, p_td_ta_tsd_iter, p_td_ta_thr_iter) (p_td_thr_validate, p_td_thr_tsd, p_td_thr_get_info) (p_td_thr_getfpregs, p_td_thr_getxregsize, p_td_thr_getxregs) (p_td_thr_sigsetmask, p_td_thr_setprio, p_td_thr_setsigpending) (p_td_thr_setfpregs, p_td_thr_setxregs, p_td_ta_map_id2thr) (p_td_ta_map_lwp2thr, p_td_thr_getgregs, p_td_thr_setgregs): Use them. (ps_pdread): Add cast. (ps_ptread): Likewise. (resolve): Likewise.