diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 30 |
1 files changed, 25 insertions, 5 deletions
@@ -602,8 +602,19 @@ main (argc, argv, envp) } p[-1] = '\0'; /* Kill the final space and terminate. */ - /* Define the variable; this will not override any user definition. */ - (void) define_variable ("MAKEOVERRIDES", 13, value, o_env, 0); + /* Define an unchangeable variable with a name that no POSIX.2 + makefile could validly use for its own variable. */ + (void) define_variable ("-*-command-variables-*-", 23, + value, o_automatic, 0); + + /* Define the variable; this will not override any user definition. + Normally a reference to this variable is written into the value of + MAKEFLAGS, allowing the user to override this value to affect the + exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot + allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so + a reference to this hidden variable is written instead. */ + (void) define_variable ("MAKEOVERRIDES", 13, + "${-*-command-variables-*-}", o_env, 1); } /* If there were -C flags, move ourselves about. */ @@ -1582,6 +1593,7 @@ define_makeflags (all, makefile) int all, makefile; { static const char ref[] = "$(MAKEOVERRIDES)"; + static const char posixref[] = "$(-*-command-variables-*-)"; register const struct command_switch *cs; char *flagstring; register char *p; @@ -1695,7 +1707,7 @@ define_makeflags (all, makefile) break; } - flagslen += 4 + sizeof ref; /* Four more for the possible " -- ". */ + flagslen += 4 + sizeof posixref; /* Four more for the possible " -- ". */ #undef ADD_FLAG @@ -1767,8 +1779,16 @@ define_makeflags (all, makefile) } /* Copy in the string. */ - bcopy (ref, p, sizeof ref - 1); - p += sizeof ref - 1; + if (posix_pedantic) + { + bcopy (posixref, p, sizeof posixref - 1); + p += sizeof posixref - 1; + } + else + { + bcopy (ref, p, sizeof ref - 1); + p += sizeof ref - 1; + } } else if (p[-1] == '-') /* Kill the final space and dash. */ |