#ident "@(#)read2.c 1.1 92/07/30 Copyright 1986,1987,1988 Sun Micro" /* * read.c * * This file contains the makefile reader. */ /* * Included files */ #include "defs.h" #include #include /* * Defined macros */ /* * typedefs & structs */ /* * Static variables */ static Boolean built_last_make_run_seen; /* * File table of contents */ extern Name_vector enter_name(); extern Name_vector enter_member_name(); extern Name normalize_name(); extern void find_target_groups(); extern void enter_dependencies(); extern void enter_dependency(); extern void enter_percent(); extern void special_reader(); extern void read_suffixes_list(); extern void make_relative(); extern void print_rule(); extern void enter_conditional(); extern void enter_equal(); extern void sh_transform(); extern void fatal_reader(); /* * enter_name(string, tail_present, string_start, string_end, * current_names, extra_names, target_group_seen) * * Take one string and enter it as a name. The string is passed in * two parts. A make string and possibly a C string to append to it. * The result is stuffed in the vector current_names. * extra_names points to a vector that is used if current_names overflows. * This is allocad in the calling routine. * Here we handle the "lib.a[members]" notation. * * Return value: * The name vector that was used * * Parameters: * tail_present Indicates if both C and make string was passed * string_start C string * string_end Pointer to char after last in C string * string make style string with head of name * current_names Vector to deposit the name in * extra_names Where to get next name vector if we run out * target_group_seen Pointer to boolean that is set if "+" is seen * * Global variables used: * makefile_type When we read a report file we normalize paths * plus Points to the Name "+" */ Name_vector enter_name(string, tail_present, string_start, string_end, current_names, extra_names, target_group_seen) String string; Boolean tail_present; register char *string_start; register char *string_end; Name_vector current_names; Name_vector *extra_names; Boolean *target_group_seen; { Name name; register char *cp; char ch; /* If we were passed a separate tail of the name we append it to the */ /* make string with the rest of it */ if (tail_present) { append_string(string_start, string, string_end - string_start); string_start = string->buffer.start; string_end = string->text.p; } /* Strip "./" from the head of the name */ if ((string_start[0] == (int) period_char) && (string_start[1] == (int) slash_char)) { string_start += 2; } ch = *string_end; *string_end = (int) nul_char; /* Check if there are any parens that are not prefixed with "$" */ /* or any "[" */ /* If there are we have to deal with the "lib.a[members]" format */ for (cp = strchr(string_start, (int) parenleft_char); cp != NULL; cp = strchr(cp + 1, (int) parenleft_char)) { if (*(cp - 1) != (int) dollar_char) { *string_end = ch; return enter_member_name(string_start, cp, string_end, current_names, extra_names); } } *string_end = ch; /* If the current_names vector is full we patch in the one from */ /* extra_names */ if (current_names->used == VSIZEOF(current_names->names)) { if (current_names->next != NULL) { current_names = current_names->next; } else { current_names->next = *extra_names; *extra_names = NULL; current_names = current_names->next; current_names->used = 0; current_names->next = NULL; } } current_names->target_group[current_names->used] = NULL; /* Remove extra ../ constructs if we are reading from a report file */ if (makefile_type == reading_cpp_file) { name = normalize_name(string_start, string_end - string_start); } else { name = GETNAME(string_start, string_end - string_start); } /* Internalize the name. Detect the name "+" (target group here) */ current_names->names[current_names->used++] = name; if (name == plus) { *target_group_seen = true; } if (tail_present && string->free_after_use) { retmem(string->buffer.start); } return current_names; } /* * enter_member_name(lib_start, member_start, string_end, * current_names, extra_names) * * A string has been found to contain member names. * (The "lib.a[members]" and "lib.a(members)" notation) * Handle it pretty much as enter_name() does for simple names. * * Return value: * The name vector that was used * * Parameters: * lib_start Points to the of start of "lib.a(member.o)" * member_start Points to "member.o" from above string. * string_end Points to char after last of above string. * current_names Vector to deposit the name in * extra_names Where to get next name vector if we run out * * Global variables used: */ static Name_vector enter_member_name(lib_start, member_start, string_end, current_names, extra_names) register char *lib_start; register char *member_start; register char *string_end; Name_vector current_names; Name_vector *extra_names; { register Boolean entry = false; char buffer[STRING_BUFFER_LENGTH]; Name lib; Name member; Name name; Property prop; char *memberp; char *q; char chr; register int paren_count; register Boolean has_dollar; register char *cq; Name long_member_name = NULL; /* Internalize the name of the library */ lib = GETNAME(lib_start, member_start - lib_start); lib->is_member = true; member_start++; if (*member_start == (int) parenleft_char) { /* This is really the "lib.a((entries))" format */ entry = true; member_start++; } /* Move the library name to the buffer where we intend to build the */ /* "lib.a(member)" for each member */ (void) strncpy(buffer, lib_start, member_start-lib_start); memberp = buffer + (member_start-lib_start); while (1) { long_member_name = NULL; /* Skip leading spaces */ for (; (member_start < string_end) && isspace(*member_start); member_start++); /* Find the end of the member name. Allow nested (). Detect $*/ for (cq = memberp, has_dollar = false, paren_count = 0; (member_start < string_end) && ((*member_start != (int) parenright_char) || (paren_count > 0)) && !isspace(*member_start); *cq++ = *member_start++) { switch (*member_start) { case parenleft_char: paren_count++; break; case parenright_char: paren_count--; break; case dollar_char: has_dollar = true; } } /* Internalize the member name */ member = GETNAME(memberp, cq - memberp); chr = *cq; *cq = 0; if ((q = strrchr(memberp, (int) slash_char)) == NULL) { q = memberp; } if ((cq - q > (int) ar_member_name_len) && !has_dollar) { *cq++ = (int) parenright_char; if (entry) { *cq++ = (int) parenright_char; } long_member_name = GETNAME(buffer, cq - buffer); cq = q + (int) ar_member_name_len; } *cq = chr; *cq++ = (int) parenright_char; if (entry) { *cq++ = (int) parenright_char; } /* Internalize the "lib.a(member)" notation for this member */ name = GETNAME(buffer, cq - buffer); name->is_member = lib->is_member; if (long_member_name != NULL) { prop = append_prop(name, long_member_name_prop); name->has_long_member_name = true; prop->body.long_member_name.member_name = long_member_name; } /* And add the member prop */ prop = append_prop(name, member_prop); prop->body.member.library = lib; if (entry) { /* "lib.a((entry))" notation */ prop->body.member.entry = member; prop->body.member.member = NULL; } else { /* "lib.a(member)" Notation */ prop->body.member.entry = NULL; prop->body.member.member = member; } /* Handle overflow of current_names */ if (current_names->used == VSIZEOF(current_names->names)) { if (current_names->next != NULL) { current_names = current_names->next; } else { if (*extra_names == NULL) { current_names = current_names->next = ALLOC(Name_vector); } else { current_names = current_names->next = *extra_names; *extra_names = NULL; } current_names->used = 0; current_names->next = NULL; } } current_names->target_group[current_names->used] = NULL; current_names->names[current_names->used++] = name; while (isspace(*member_start)) { member_start++; } /* Check if there are more members */ if ((*member_start == (int) parenright_char) || (member_start >= string_end)) { return current_names; } } /* NOTREACHED */ } /* * normalize_name(name_string, length) * * Take a namestring and remove redundant ../, // and ./ constructs * * Return value: * The normalized name * * Parameters: * name_string Path string to normalize * length Length of that string * * Global variables used: * dot The Name ".", compared against * dotdot The Name "..", compared against */ static Name normalize_name(name_string, length) register char *name_string; register int length; { register char *string = alloca(length + 1); register char *cdp; char *current_component; Name name; register int count; static Name dotdot; if (dotdot == NULL) { dotdot = GETNAME("..", FIND_LENGTH); } /* Copy string removing ./ and // */ /* First strip leading ./ */ while ((length > 1) && (name_string[0] == (int) period_char) && (name_string[1] == (int) slash_char)) { name_string += 2; length -= 2; while ((length > 0) && (name_string[0] == (int) slash_char)) { name_string++; length--; } } /* Then copy the rest of the string removing /./ & // */ cdp = string; while (length > 0) { if (((length > 2) && (name_string[0] == (int) slash_char) && (name_string[1] == (int) period_char) && (name_string[2] == (int) slash_char)) || ((length == 2) && (name_string[0] == (int) slash_char) && (name_string[1] == (int) period_char))) { name_string += 2; length -= 2; continue; } if ((length > 1) && (name_string[0] == (int) slash_char) && (name_string[1] == (int) slash_char)) { name_string++; length--; continue; } *cdp++ = *name_string++; length--; } *cdp = (int) nul_char; /* Now scan for /../ and remove such combinations iff */ /* is not another .. */ /* Each time something is removed the whole process is restarted */ removed_one: name_string = string; current_component = cdp = string = alloca((length = strlen(name_string)) + 1); while (length > 0) { if (((length > 3) && (name_string[0] == (int) slash_char) && (name_string[1] == (int) period_char) && (name_string[2] == (int) period_char) && (name_string[3] == (int) slash_char)) || ((length == 3) && (name_string[0] == (int) slash_char) && (name_string[1] == (int) period_char) && (name_string[2] == (int) period_char))) { /* Positioned on the / that starts a /.. sequence */ if (((count = cdp - current_component) != 0) && (exists(name = GETNAME(current_component, count)) > 0) && (name != dotdot)) { cdp = current_component; name_string += 3; length -= 3; if (length > 0) { name_string++; /* skip slash */ length--; while (length > 0) { *cdp++ = *name_string++; length--; } } *cdp = (int) nul_char; goto removed_one; } } if ((*cdp++ = *name_string++) == (int) slash_char) { current_component = cdp; } length--; } *cdp = (int) nul_char; if (string[0] == (int) nul_char) { return dot; } return GETNAME(string, FIND_LENGTH); } /* * find_target_groups(target_list) * * If a "+" was seen when the target list was scanned we need to extract * the groups. Each target in the name vector that is a member of a * group gets a pointer to a chain of all the members stuffed in its * target_group vector slot * * Parameters: * target_list The list of targets that contains "+" * * Global variables used: * plus The Name "+", compared against */ void find_target_groups(target_list) register Name_vector target_list; { register Chain target_group = NULL; register Chain tail_target_group = NULL; register Name *next; register Boolean clear_target_group = false; register int i; /* Scan the list of targets */ for (; target_list != NULL; target_list = target_list->next) { for (i = 0; i < target_list->used; i++) { if (target_list->names[i] != NULL) { /* If the previous target terminated a group */ /* we flush the pointer to that member chain */ if (clear_target_group) { clear_target_group = false; target_group = NULL; } /* Pick up a pointer to the cell with */ /* the next target */ if (i + 1 != target_list->used) { next = &target_list->names[i + 1]; } else { next = (target_list->next != NULL) ? &target_list->next->names[0] : NULL; } /* We have four states here */ /* 0: No target group started and next element is not a "+" */ /* This is not interesting */ /* 1: A target group is being built and the next element is not "+"*/ /* This terminates the group */ /* 2: No target group started and the next member is "+" */ /* This is the first target in a group */ /* 3: A target group started and the next member is a "+" */ /* The group continues */ switch ((target_group ? 1 : 0) + (next && (*next == plus) ? 2 : 0)) { case 0: /* Not target_group */ break; case 1: /* Last group member */ /* We need to keep this pointer so */ /* we can stuff it for last member */ clear_target_group = true; /* fall into */ case 3: /* Middle group member */ /* Add this target to the */ /* current chain */ tail_target_group->next = ALLOC(Chain); tail_target_group = tail_target_group->next; tail_target_group->next = NULL; tail_target_group->name = target_list->names[i]; break; case 2: /* First group member */ /* Start a new chain */ target_group = tail_target_group = ALLOC(Chain); target_group->next = NULL; target_group->name = target_list->names[i]; break; } /* Stuff the current chain, if any, in the */ /* targets group slot */ target_list->target_group[i] = target_group; if ((next != NULL) && (*next == plus)) { *next = NULL; } } } } } /* * enter_dependencies(target, target_group, depes, command, separator) * * Take one target and a list of dependencies and process the whole thing. * The target might be special in some sense in which case that is handled * * Parameters: * target The target we want to enter * target_group Non-NULL if target is part of a group this time * depes A list of dependencies for the target * command The command the target should be entered with * separator Indicates if this is a ":" or a "::" rule * * Static variables used: * built_last_make_run_seen If the previous target was * .BUILT_LAST_MAKE_RUN we say to rewrite * the state file later on * * Global variables used: * command_changed Set to indicate if .make.state needs rewriting * default_target_to_build Set to the target if reading makefile * and this is the first regular target * force The Name " FORCE", used with "::" targets * makefile_type We do different things for makefile vs. report * not_auto The Name ".NOT_AUTO", compared against * recursive_name The Name ".RECURSIVE", compared against * temp_file_number Used to figure out when to clear stale * automatic dependencies * trace_reader Indicates that we should echo stuff we read */ void enter_dependencies(target, target_group, depes, command, separator) register Name target; Chain target_group; register Name_vector depes; register Cmd_line command; register Separator separator; { register int i; register Property line; Name name; Name directory; char *namep; Dependency dp; Dependency *dpp; Property line2; char relative[MAXPATHLEN]; register int recursive_state; Boolean register_as_auto; Boolean not_auto_found; char *slash; Name_vector nvp; /* If we saw it in the makefile it must be a file */ target->stat.is_file = true; /* Make sure that we use dependencies entered for makefiles */ target->state = build_dont_know; /* If the target is special we delegate the processing */ if (target->special_reader != no_special) { special_reader(target, depes, command); return; } /* Check if this is a "a%b : x%y" type rule */ if (target->percent) { enter_percent(target, depes, command); return; } /* Check if this is a .RECURSIVE line */ if ((depes->used >= 3) && (depes->names[0] == recursive_name)) { target->has_recursive_dependency = true; depes->names[0] = NULL; recursive_state = 0; dp = NULL; dpp = &dp; /* Read the dependencies. They are " */ /* *" */ for (; depes != NULL; depes = depes->next) { for (i = 0; i < depes->used; i++) { if (depes->names[i] != NULL) { switch (recursive_state++) { case 0: /* Directory */ make_relative(depes->names[i]-> string, relative); directory = GETNAME(relative, FIND_LENGTH); break; case 1: /* Target */ name = depes->names[i]; break; default: /* Makefiles */ *dpp = ALLOC(Dependency); (*dpp)->next = NULL; (*dpp)->name = depes->names[i]; (*dpp)->automatic = false; (*dpp)->stale = false; (*dpp)->built = false; dpp = &((*dpp)->next); break; } } } } /* Check if this recursion already has been reported else */ /* enter the recursive prop for the target */ /* The has_built flag is used to tell if this .RECURSIVE */ /* was discovered from this run (read from a tmp file) */ /* or was from discovered from the original .make.state */ /* file */ for (line = get_prop(target->prop, recursive_prop); line != NULL; line = get_prop(line->next, recursive_prop)) { if ((line->body.recursive.directory == directory) && (line->body.recursive.target == name)) { line->body.recursive.makefiles = dp; line->body.recursive.has_built = (Boolean) (makefile_type == reading_cpp_file); return; } } line2 = append_prop(target, recursive_prop); line2->body.recursive.directory = directory; line2->body.recursive.target = name; line2->body.recursive.makefiles = dp; line2->body.recursive.has_built = (Boolean) (makefile_type == reading_cpp_file); return; } /* If this is the first target that doesnt start with a "." in the */ /* makefile we remember that */ if ((makefile_type == reading_makefile) && (default_target_to_build == NULL) && ((target->string[0] != (int) period_char) || strchr(target->string, (int) slash_char))) { default_target_to_build = target; } /* Check if the line is ":" or "::" */ if (makefile_type == reading_makefile) { if (target->colons == no_colon) { target->colons = separator; } else { if (target->colons != separator) { fatal_reader(":/:: conflict for target `%s'", target->string); } } if (target->colons == two_colon) { if (depes->used == 0) { /* If this is a "::" type line with no */ /* dependencies we add one "FRC" type */ /* dependency for free */ depes->used = 1; /* Force :: targets with no * depes to always run */ depes->names[0] = force; } /* Do not delete "::" type targets when interrupted */ target->stat.is_precious = true; /* Build a synthetic target "%target" */ /* for "target" */ namep = getmem((int) (target->hash.length + 10)); slash = strrchr(target->string, (int) slash_char); if (slash == NULL) { (void) sprintf(namep, "%d@%s", target->colon_splits++, target->string); } else { *slash= 0; (void) sprintf(namep, "%s/%d@%s", target->string, target->colon_splits++, slash+1); *slash= (int) slash_char; } name = GETNAME(namep, FIND_LENGTH); if (trace_reader) { (void) printf("%s:\t", target->string); } /* Make "target" depend on "%target */ line2 = maybe_append_prop(target, line_prop); enter_dependency(line2, name, true); line2->body.line.target = target; /* Put a prop on "%target that makes */ /* appear as "target" */ /* when it is processed */ maybe_append_prop(name, target_prop)-> body.target.target = target; target->is_double_colon_parent = true; name->is_double_colon = true; name->has_target_prop = true; if (trace_reader) { (void) printf("\n"); } (target = name)->stat.is_file = true; } } /* This really is a regular dependency line. Just enter it */ line = maybe_append_prop(target, line_prop); line->body.line.target = target; /* Depending on what kind of makefile we are reading we have to */ /* treat things differently */ switch (makefile_type) { case reading_makefile: /* Reading regular makefile. Just notice whether this */ /* redefines the rule for the target */ if (command != NULL) { if (line->body.line.command_template != NULL) { line->body.line.command_template_redefined = true; if (target->string[0] == (int) period_char) { line->body.line.command_template = command; } } else { line->body.line.command_template = command; } } else { if (target->string[0] == (int) period_char) { line->body.line.command_template = command; } } break; case rereading_statefile: /* Rereading the statefile. We only enter thing that changed */ /* since the previous time we read it */ if (!built_last_make_run_seen) { return; } built_last_make_run_seen = false; command_changed = true; target->has_built = true; case reading_statefile: /* Reading the statefile for the first time. Enter the rules */ /* as "Commands used" not "templates to use" */ if (command != NULL) { line->body.line.command_used = command; } break; case reading_cpp_file: /* Reading report file from programs that reports */ /* dependencies. If this is the first time the target is */ /* read from this reportfile we clear all old */ /* automatic depes */ if (target->temp_file_number == temp_file_number) { break; } target->temp_file_number = temp_file_number; command_changed = true; if (line != NULL) { for (dpp = &line->body.line.dependencies, dp = *dpp; dp != NULL; dp = dp->next) { if (dp->automatic) { *dpp = dp->next; } else { dpp = &dp->next; } } } break; default: fatal_reader("Internal error. Unknown makefile type %d", makefile_type); } /* A target may only be involved in one target group */ if (line->body.line.target_group != NULL) { if (target_group != NULL) { fatal_reader("Too many target groups for target `%s'", target->string); } } else { line->body.line.target_group = target_group; } if (trace_reader) { (void) printf("%s:\t", target->string); } /* Enter the dependencies */ register_as_auto = BOOLEAN(makefile_type != reading_makefile); not_auto_found = false; for (; (depes != NULL) && !not_auto_found; depes = depes->next) { for (i = 0; i < depes->used; i++) { /* the dependency .NOT_AUTO signals beginning of * explicit dependancies which were put at end of * list in .make.state file - we stop entering * dependencies at this point */ if (depes->names[i] == not_auto) { not_auto_found = true; break; } enter_dependency(line, depes->names[i], register_as_auto); } } if (trace_reader) { (void) printf("\n"); print_rule(command); } } /* * enter_dependency(line, depe, automatic) * * Enter one dependency. Do not enter duplicates. * * Parameters: * line The line block that the dependeny is * entered for * depe The dependency to enter * automatic Used to set the field "automatic" * * Global variables used: * makefile_type We do different things for makefile vs. report * trace_reader Indicates that we should echo stuff we read * wait_name The Name ".WAIT", compared against */ void enter_dependency(line, depe, automatic) Property line; register Name depe; Boolean automatic; { register Dependency dp; register Dependency *insert; if (trace_reader) { (void) printf("%s ", depe->string); } /* Find the end of the list and check for duplicates */ for (insert = &line->body.line.dependencies, dp = *insert; dp != NULL; insert = &dp->next, dp = *insert) { if ((dp->name == depe) && (depe != wait_name)) { if (dp->automatic) { dp->automatic = automatic; } dp->stale = false; return; } } /* Insert the new dependency since we couldnt find it */ dp = *insert = ALLOC(Dependency); dp->name = depe; dp->next = NULL; dp->automatic = automatic; dp->stale = false; dp->built = false; depe->stat.is_file = true; if ((makefile_type == reading_makefile) && (line != NULL) && (line->body.line.target != NULL)) { line->body.line.target->has_regular_dependency = true; } } /* * enter_percent(target, depes, command) * * Enter "x%y : a%b" type lines * % patterns are stored in four parts head and tail for target and source * * Parameters: * target Left hand side of pattern * depes The dependency list with the rh pattern * command The command for the pattern * * Global variables used: * empty_name The Name "", compared against * percent_list The list of all percent rules, added to * trace_reader Indicates that we should echo stuff we read */ static void enter_percent(target, depes, command) register Name target; register Name_vector depes; Cmd_line command; { register Percent result = ALLOC(Percent); Percent p; Percent *insert; register char *cp; Name_vector nvp; Name source; Dependency *depe_tail = &result->dependencies; Dependency dp; int i; result->next = NULL; result->command_template = command; /* * Find the right hand side pattern and build depe list */ result->dependencies = NULL; for (source = NULL, nvp = depes; nvp != NULL; nvp = nvp->next) { for (i = 0; i < nvp->used; i++) { if (nvp->names[i]->percent) { if (source != NULL) { fatal_reader("More than one %% pattern on left hand side"); } source = nvp->names[i]; } else { dp = ALLOC(Dependency); dp->next = NULL; dp->name = nvp->names[i]; dp->automatic = false; dp->stale = false; dp->built = false; *depe_tail = dp; depe_tail = &dp->next; } } } /* Find the % in the target string and split it */ if ((cp = strchr(target->string, (int) percent_char)) != NULL) { result->target_prefix = GETNAME(target->string, cp - target->string); result->target_suffix = GETNAME(cp + 1, (int)(target->hash.length - 1 - (cp - target->string))); } else { fatal_reader("Illegal pattern with %% in source but not in target"); } /* Same thing for the source pattern */ if ((source != NULL) && (cp = strchr(source->string, (int) percent_char)) != NULL) { result->source_prefix = GETNAME(source->string, cp - source->string); result->source_suffix = GETNAME(cp + 1, (int)(source->hash.length - 1 - (cp - source->string))); result->source_percent = true; } else { if (source == NULL) { if (result->dependencies == NULL) { result->source_prefix = empty_name; } else { result->source_prefix = result->dependencies->name; result->dependencies = result->dependencies->next; } } else { result->source_prefix = source; } result->source_suffix = empty_name; result->source_percent = false; } if ((empty_name == result->target_prefix) && (empty_name == result->target_suffix) && (empty_name == result->source_prefix) && (empty_name == result->source_suffix)) { fatal_reader("Illegal pattern: `%%:%%'"); } /* Find the end of the percent list and append the new pattern */ for (insert = &percent_list, p = *insert; p != NULL; insert = &p->next, p = *insert); *insert = result; if (trace_reader) { (void) printf("%s%%%s:\t%s%s%s\n", result->target_prefix->string, result->target_suffix->string, result->source_prefix->string, result->source_percent ? "%" : "", result->source_suffix->string); print_rule(command); } } /* * special_reader(target, depes, command) * * Read the pseudo targets make knows about * This handles the special targets that should not be entered as regular * target/dependency sets. * * Parameters: * target The special target * depes The list of dependencies it was entered with * command The command it was entered with * * Static variables used: * built_last_make_run_seen Set to indicate .BUILT_LAST... seen * * Global variables used: * all_parallel Set to indicate that everything runs parallel * current_make_version The Name "" * default_rule Set when ".DEFAULT" target is read * default_rule_name The Name ".DEFAULT", used for tracing * dot_keep_state The Name ".KEEP_STATE", used for tracing * ignore_errors Set if ".IGNORE" target is read * ignore_name The Name ".IGNORE", used for tracing * keep_state Set if ".KEEP_STATE" target is read * no_parallel_name The Name ".NO_PARALLEL", used for tracing * only_parallel Set to indicate only some targets runs parallel * parallel_name The Name ".PARALLEL", used for tracing * precious The Name ".PRECIOUS", used for tracing * sccs_get_name The Name ".SCCS_GET", used for tracing * sccs_get_rule Set when ".SCCS_GET" target is read * silent Set when ".SILENT" target is read * silent_name The Name ".SILENT", used for tracing * trace_reader Indicates that we should echo stuff we read */ static void special_reader(target, depes, command) Name target; register Name_vector depes; Cmd_line command; { register int n; switch (target->special_reader) { case built_last_make_run_special: built_last_make_run_seen = true; break; case default_special: if (depes->used != 0) { warning("Illegal dependency list for target `%s'", target->string); } default_rule = command; if (trace_reader) { (void) printf("%s:\n", default_rule_name->string); print_rule(command); } break; case ignore_special: if (depes->used != 0) { fatal_reader("Illegal dependencies for target `%s'", target->string); } ignore_errors = true; if (trace_reader) { (void) printf("%s:\n", ignore_name->string); } break; case keep_state_special: if (depes->used != 0) { fatal_reader("Illegal dependencies for target `%s'", target->string); } keep_state = true; if (trace_reader) { (void) printf("%s:\n", dot_keep_state->string); } break; case make_version_special: if (depes->used != 1) { fatal_reader("Illegal dependency list for target `%s'", target->string); } if (depes->names[0] != current_make_version) { /* * Special case the fact that version 1.0 and 1.1 * are identical. */ if (!IS_EQUAL(depes->names[0]->string, "VERSION-1.1") || !IS_EQUAL(current_make_version->string, "VERSION-1.0")) { /* * Version mismatches should cause the * .make.state file to be skipped. * This is currently not true - it is read * anyway. */ warning("Version mismatch between current version `%s' and `%s'", current_make_version->string, depes->names[0]->string); } } break; case no_parallel_special: /* Set the no_parallel bit for all the targets on */ /* the dependency list */ if (depes->used == 0) { /* only those explicitly made parallel */ only_parallel = true; all_parallel = false; } for (; depes != NULL; depes = depes->next) { for (n = 0; n < depes->used; n++) { if (trace_reader) { (void) printf("%s:\t%s\n", no_parallel_name->string, depes->names[n]->string); } depes->names[n]->no_parallel = true; depes->names[n]->parallel = false; } } break; case parallel_special: if (depes->used == 0) { /* everything runs in parallel */ all_parallel = true; only_parallel = false; } /* Set the parallel bit for all the targets on */ /* the dependency list */ for (; depes != NULL; depes = depes->next) { for (n = 0; n < depes->used; n++) { if (trace_reader) { (void) printf("%s:\t%s\n", parallel_name->string, depes->names[n]->string); } depes->names[n]->parallel = true; depes->names[n]->no_parallel = false; } } break; case precious_special: /* Set the precious bit for all the targets on */ /* the dependency list */ for (; depes != NULL; depes = depes->next) { for (n = 0; n < depes->used; n++) { if (trace_reader) { (void) printf("%s:\t%s\n", precious->string, depes->names[n]->string); } depes->names[n]->stat.is_precious = true; } } break; case sccs_get_special: if (depes->used != 0) { fatal_reader("Illegal dependencies for target `%s'", target->string); } sccs_get_rule = command; if (trace_reader) { (void) printf("%s:\n", sccs_get_name->string); print_rule(command); } break; case silent_special: if (depes->used != 0) { fatal_reader("Illegal dependencies for target `%s'", target->string); } silent = true; if (trace_reader) { (void) printf("%s:\n", silent_name->string); } break; case suffixes_special: read_suffixes_list(depes); break; default: fatal_reader("Internal error: Unknown special reader"); } } /* * read_suffixes_list(depes) * * Read the special list .SUFFIXES. If it is empty the old list is * cleared. Else the new one is appended. Suffixes with ~ are extracted * and marked. * * Parameters: * depes The list of suffixes * * Global variables used: * hashtab The central hashtable for Names. * suffixes The list of suffixes, set or appended to * suffixes_name The Name ".SUFFIXES", used for tracing * trace_reader Indicates that we should echo stuff we read */ static void read_suffixes_list(depes) register Name_vector depes; { register int n; register Dependency dp; register Dependency *insert_dep; register Name np; Name np2; register Boolean first = true; if (depes->used == 0) { /* .SUFFIXES with no dependency list clears the */ /* suffixes list */ for (n = hashsize - 1; n >= 0; n--) { for (np = hashtab[n]; np != NULL; np = np->next) { np->with_squiggle = np->without_squiggle = false; } } suffixes = NULL; if (trace_reader) { (void) printf("%s:\n", suffixes_name->string); } return; } /* Otherwise we append to the list */ for (; depes != NULL; depes = depes->next) { for (n = 0; n < depes->used; n++) { np = depes->names[n]; /* Find the end of the list and check if the */ /* suffix already has been entered */ for (insert_dep = &suffixes, dp = *insert_dep; dp != NULL; insert_dep = &dp->next, dp = *insert_dep) { if (dp->name == np) { goto duplicate_suffix; } } if (trace_reader) { if (first) { (void) printf("%s:\t", suffixes_name->string); first = false; } (void) printf("%s ", depes->names[n]->string); } /* If the suffix is suffixed with "~" we */ /* strip that and mark the suffix nameblock */ if (np->string[np->hash.length - 1] == (int) tilde_char) { np2 = GETNAME(np->string, (int)(np->hash.length - 1)); np2->with_squiggle = true; if (np2->without_squiggle) { continue; } np = np2; } np->without_squiggle = true; /* Add the suffix to the list */ dp = *insert_dep = ALLOC(Dependency); insert_dep = &dp->next; dp->next = NULL; dp->name = np; dp->built = false; duplicate_suffix:; } } if (trace_reader) { (void) printf("\n"); } } /* * make_relative(to, result) * * Given a file name compose a relative path name from it to the * current directory. * * Parameters: * to The path we want to make relative * result Where to put the resulting relative path * * Global variables used: */ static void make_relative(to, result) char *to; char *result; { char *from; int ncomps; int i; int len; char *tocomp; char *cp; /* Check if the path already is relative */ if (to[0] != (int) slash_char) { (void) strcpy(result, to); return; } from = get_current_path(); /* Find the number of components in the from name. ncomp = number of */ /* slashes + 1. */ ncomps = 1; for (cp = from; *cp != (int) nul_char; cp++) { if (*cp == (int) slash_char) { ncomps++; } } /* See how many components match to determine how many, if any, ".."s*/ /* will be needed. */ result[0] = (int) nul_char; tocomp = to; while (*from != (int) nul_char && *from == *to) { if (*from == (int) slash_char) { ncomps--; tocomp = &to[1]; } from++; to++; } /* Now for some special cases. Check for exact matches and for either*/ /* name terminating exactly. */ if (*from == (int) nul_char) { if (*to == (int) nul_char) { (void) strcpy(result, "."); return; } if (*to == (int) slash_char) { ncomps--; tocomp = &to[1]; } } else if (*from == (int) slash_char && *to == (int) nul_char) { ncomps--; tocomp = to; } /* Add on the ".."s. */ for (i = 0; i < ncomps; i++) { (void) strcat(result, "../"); } /* Add on the remainder, if any, of the to name. */ if (*tocomp == (int) nul_char) { len = strlen(result); result[len - 1] = (int) nul_char; } else { (void) strcat(result, tocomp); } return; } /* * print_rule(command) * * Used when tracing the reading of rules * * Parameters: * command Command to print * * Global variables used: */ static void print_rule(command) register Cmd_line command; { for (; command != NULL; command = command->next) { (void) printf("\t%s\n", command->command_line->string); } } /* * enter_conditional(target, name, value, append) * * Enter "target := MACRO= value" constructs * * Parameters: * target The target the macro is for * name The name of the macro * value The value for the macro * append Indicates if the assignment is appending or not * * Global variables used: * conditionals A special Name that stores all conditionals * where the target is a % pattern * trace_reader Indicates that we should echo stuff we read */ void enter_conditional(target, name, value, append) register Name target; Name name; Name value; register Boolean append; { register Property conditional; static int sequence; Name orig_target = target; if (name == target_arch) { enter_conditional(target, virtual_root, virtual_root, false); } if (target->percent) { target = conditionals; } if (name->colon) { sh_transform(&name, &value); } /* Count how many conditionals we must activate before building the */ /* target */ if (target->percent) { target = conditionals; } target->conditional_cnt++; maybe_append_prop(name, macro_prop)->body.macro.is_conditional = true; /* Add the property for the target */ conditional = append_prop(target, conditional_prop); conditional->body.conditional.target = orig_target; conditional->body.conditional.name = name; conditional->body.conditional.value = value; conditional->body.conditional.sequence = sequence++; conditional->body.conditional.append = append; if (trace_reader) { if (value == NULL) { (void) printf("%s := %s %c=\n", target->string, name->string, append ? (int) plus_char : (int) space_char); } else { (void) printf("%s := %s %c= %s\n", target->string, name->string, append ? (int) plus_char : (int) space_char, value->string); } } } /* * enter_equal(name, value, append) * * Enter "MACRO= value" constructs * * Parameters: * name The name of the macro * value The value for the macro * append Indicates if the assignment is appending or not * * Global variables used: * trace_reader Indicates that we should echo stuff we read */ void enter_equal(name, value, append) Name name; Name value; register Boolean append; { if (name->colon) { sh_transform(&name, &value); } (void) SETVAR(name, value, append); if (trace_reader) { if (value == NULL) { (void) printf("%s %c=\n", name->string, append ? (int) plus_char : (int) space_char); } else { (void) printf("%s %c= %s\n", name->string, append ? (int) plus_char : (int) space_char, value->string); } } } /* * sh_transform(name, value) * * Parameters: * name The name of the macro we might transform * value The value to transform * */ static void sh_transform(name, value) Name *name; Name *value; { /* Check if we need :sh transform */ char *colon; String_rec command; String_rec destination; char buffer[1000]; colon = strrchr((*name)->string, (int) colon_char); if ((colon != NULL) && (colon[1] == 's') && (colon[2] == 'h') && (colon[3] == (int) nul_char)) { command.text.p = (*value)->string + (*value)->hash.length; command.text.end = command.text.p; command.buffer.start = (*value)->string; command.buffer.end = command.text.p; INIT_STRING_FROM_STACK(destination, buffer); sh_command2string(&command, &destination); (*value) = GETNAME(destination.buffer.start, FIND_LENGTH); *colon = (int) nul_char; (*name) = GETNAME((*name)->string, FIND_LENGTH); *colon = (int) colon_char; } } /* * fatal_reader(format, args...) * * Parameters: * format printf style format string * args arguments to match the format * * Global variables used: * file_being_read Name of the makefile being read * line_number Line that is being read * report_pwd Indicates whether current path should be shown * temp_file_name When reading tempfile we report that name */ /*VARARGS*/ void fatal_reader(va_alist) va_dcl { va_list args; char message[1000]; char *pattern; va_start(args); pattern = va_arg(args, char *); if (file_being_read != NULL) { if (line_number != 0) { (void) sprintf(message, "%s, line %d: %s", file_being_read, line_number, pattern); } else { (void) sprintf(message, "%s: %s", file_being_read, pattern); } pattern = message; } (void) fflush(stdout); (void) fprintf(stderr, "make: Fatal error in reader: "); (void) vfprintf(stderr, pattern, args); (void) fprintf(stderr, "\n"); va_end(args); if (temp_file_name != NULL) { (void) fprintf(stderr, "make: Temp-file %s not removed\n", temp_file_name->string); temp_file_name = NULL; } if (report_pwd) { (void) fprintf(stderr, "Current working directory %s\n", get_current_path()); } (void) fflush(stderr); exit(1); }