diff options
Diffstat (limited to 'gcc/c-family/c-opts.c')
| -rw-r--r-- | gcc/c-family/c-opts.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/c-family/c-opts.c b/gcc/c-family/c-opts.c index 29e9a355bee..fbbc80ee94a 100644 --- a/gcc/c-family/c-opts.c +++ b/gcc/c-family/c-opts.c @@ -456,6 +456,16 @@ c_common_handle_option (size_t scode, const char *arg, int value, handle_OPT_d (arg); break; + case OPT_Wabi_: + warn_abi = true; + if (value == 1) + { + warning (0, "%<-Wabi=1%> is not supported, using =2"); + value = 2; + } + flag_abi_compat_version = value; + break; + case OPT_fcanonical_system_headers: cpp_opts->canonical_system_headers = value; break; @@ -910,6 +920,22 @@ c_common_post_options (const char **pfilename) if (flag_declone_ctor_dtor == -1) flag_declone_ctor_dtor = optimize_size; + if (flag_abi_compat_version == 1) + { + warning (0, "%<-fabi-compat-version=1%> is not supported, using =2"); + flag_abi_compat_version = 2; + } + else if (flag_abi_compat_version == -1) + { + /* Generate compatibility aliases for ABI v2 (3.4-4.9) by default. */ + flag_abi_compat_version = (flag_abi_version == 0 ? 2 : 0); + + /* But don't warn about backward compatibility unless explicitly + requested with -Wabi=n. */ + if (flag_abi_version == 0) + warn_abi = false; + } + if (cxx_dialect >= cxx11) { /* If we're allowing C++0x constructs, don't warn about C++98 |