diff options
Diffstat (limited to 'usr.sbin/crunch/crunchgen/crunchgen.c')
| -rw-r--r-- | usr.sbin/crunch/crunchgen/crunchgen.c | 1236 |
1 files changed, 1236 insertions, 0 deletions
diff --git a/usr.sbin/crunch/crunchgen/crunchgen.c b/usr.sbin/crunch/crunchgen/crunchgen.c new file mode 100644 index 0000000..8ace15a --- /dev/null +++ b/usr.sbin/crunch/crunchgen/crunchgen.c @@ -0,0 +1,1236 @@ +/* + * Copyright (c) 1994 University of Maryland + * All Rights Reserved. + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of U.M. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. U.M. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + * + * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M. + * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Author: James da Silva, Systems Design and Analysis Group + * Computer Science Department + * University of Maryland at College Park + */ +/* + * ======================================================================== + * crunchgen.c + * + * Generates a Makefile and main C file for a crunched executable, + * from specs given in a .conf file. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/stat.h> + +#include <ctype.h> +#include <err.h> +#include <paths.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#define CRUNCH_VERSION "0.2" + +#define MAXLINELEN 16384 +#define MAXFIELDS 2048 + + +/* internal representation of conf file: */ + +/* simple lists of strings suffice for most parms */ + +typedef struct strlst { + struct strlst *next; + char *str; +} strlst_t; + +/* progs have structure, each field can be set with "special" or calculated */ + +typedef struct prog { + struct prog *next; /* link field */ + char *name; /* program name */ + char *ident; /* C identifier for the program name */ + char *srcdir; + char *realsrcdir; + char *objdir; + char *objvar; /* Makefile variable to replace OBJS */ + strlst_t *objs, *objpaths; + strlst_t *buildopts; + strlst_t *keeplist; + strlst_t *links; + strlst_t *libs; + strlst_t *libs_so; + int goterror; +} prog_t; + + +/* global state */ + +strlst_t *buildopts = NULL; +strlst_t *srcdirs = NULL; +strlst_t *libs = NULL; +strlst_t *libs_so = NULL; +prog_t *progs = NULL; + +char confname[MAXPATHLEN], infilename[MAXPATHLEN]; +char outmkname[MAXPATHLEN], outcfname[MAXPATHLEN], execfname[MAXPATHLEN]; +char tempfname[MAXPATHLEN], cachename[MAXPATHLEN], curfilename[MAXPATHLEN]; +char outhdrname[MAXPATHLEN] ; /* user-supplied header for *.mk */ +char *objprefix; /* where are the objects ? */ +char *path_make; +int linenum = -1; +int goterror = 0; + +int verbose, readcache; /* options */ +int reading_cache; +int makeobj = 0; /* add 'make obj' rules to the makefile */ + +int list_mode; + +/* general library routines */ + +void status(const char *str); +void out_of_memory(void); +void add_string(strlst_t **listp, char *str); +int is_dir(const char *pathname); +int is_nonempty_file(const char *pathname); +int subtract_strlst(strlst_t **lista, strlst_t **listb); +int in_list(strlst_t **listp, char *str); + +/* helper routines for main() */ + +void usage(void); +void parse_conf_file(void); +void gen_outputs(void); + +extern char *crunched_skel[]; + + +int +main(int argc, char **argv) +{ + char *p; + int optc; + + verbose = 1; + readcache = 1; + *outmkname = *outcfname = *execfname = '\0'; + + path_make = getenv("MAKE"); + if (path_make == NULL || *path_make == '\0') + path_make = "make"; + + p = getenv("MAKEOBJDIRPREFIX"); + if (p == NULL || *p == '\0') + objprefix = "/usr/obj"; /* default */ + else + if ((objprefix = strdup(p)) == NULL) + out_of_memory(); + + while((optc = getopt(argc, argv, "lh:m:c:e:p:foq")) != -1) { + switch(optc) { + case 'f': + readcache = 0; + break; + case 'o': + makeobj = 1; + break; + case 'q': + verbose = 0; + break; + + case 'm': + strlcpy(outmkname, optarg, sizeof(outmkname)); + break; + case 'p': + if ((objprefix = strdup(optarg)) == NULL) + out_of_memory(); + break; + + case 'h': + strlcpy(outhdrname, optarg, sizeof(outhdrname)); + break; + case 'c': + strlcpy(outcfname, optarg, sizeof(outcfname)); + break; + case 'e': + strlcpy(execfname, optarg, sizeof(execfname)); + break; + + case 'l': + list_mode++; + verbose = 0; + break; + + case '?': + default: + usage(); + } + } + + argc -= optind; + argv += optind; + + if (argc != 1) + usage(); + + /* + * generate filenames + */ + + strlcpy(infilename, argv[0], sizeof(infilename)); + + /* confname = `basename infilename .conf` */ + + if ((p=strrchr(infilename, '/')) != NULL) + strlcpy(confname, p + 1, sizeof(confname)); + else + strlcpy(confname, infilename, sizeof(confname)); + + if ((p=strrchr(confname, '.')) != NULL && !strcmp(p, ".conf")) + *p = '\0'; + + if (!*outmkname) + snprintf(outmkname, sizeof(outmkname), "%s.mk", confname); + if (!*outcfname) + snprintf(outcfname, sizeof(outcfname), "%s.c", confname); + if (!*execfname) + snprintf(execfname, sizeof(execfname), "%s", confname); + + snprintf(cachename, sizeof(cachename), "%s.cache", confname); + snprintf(tempfname, sizeof(tempfname), "%s/crunchgen_%sXXXXXX", + getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP, confname); + + parse_conf_file(); + if (list_mode) + exit(goterror); + + gen_outputs(); + + exit(goterror); +} + + +void +usage(void) +{ + fprintf(stderr, "%s%s\n\t%s%s\n", "usage: crunchgen [-foq] ", + "[-h <makefile-header-name>] [-m <makefile>]", + "[-p <obj-prefix>] [-c <c-file-name>] [-e <exec-file>] ", + "<conffile>"); + exit(1); +} + + +/* + * ======================================================================== + * parse_conf_file subsystem + * + */ + +/* helper routines for parse_conf_file */ + +void parse_one_file(char *filename); +void parse_line(char *pline, int *fc, char **fv, int nf); +void add_srcdirs(int argc, char **argv); +void add_progs(int argc, char **argv); +void add_link(int argc, char **argv); +void add_libs(int argc, char **argv); +void add_libs_so(int argc, char **argv); +void add_buildopts(int argc, char **argv); +void add_special(int argc, char **argv); + +prog_t *find_prog(char *str); +void add_prog(char *progname); + + +void +parse_conf_file(void) +{ + if (!is_nonempty_file(infilename)) + errx(1, "fatal: input file \"%s\" not found", infilename); + + parse_one_file(infilename); + if (readcache && is_nonempty_file(cachename)) { + reading_cache = 1; + parse_one_file(cachename); + } +} + + +void +parse_one_file(char *filename) +{ + char *fieldv[MAXFIELDS]; + int fieldc; + void (*f)(int c, char **v); + FILE *cf; + char line[MAXLINELEN]; + + snprintf(line, sizeof(line), "reading %s", filename); + status(line); + strlcpy(curfilename, filename, sizeof(curfilename)); + + if ((cf = fopen(curfilename, "r")) == NULL) { + warn("%s", curfilename); + goterror = 1; + return; + } + + linenum = 0; + while (fgets(line, MAXLINELEN, cf) != NULL) { + linenum++; + parse_line(line, &fieldc, fieldv, MAXFIELDS); + + if (fieldc < 1) + continue; + + if (!strcmp(fieldv[0], "srcdirs")) + f = add_srcdirs; + else if(!strcmp(fieldv[0], "progs")) + f = add_progs; + else if(!strcmp(fieldv[0], "ln")) + f = add_link; + else if(!strcmp(fieldv[0], "libs")) + f = add_libs; + else if(!strcmp(fieldv[0], "libs_so")) + f = add_libs_so; + else if(!strcmp(fieldv[0], "buildopts")) + f = add_buildopts; + else if(!strcmp(fieldv[0], "special")) + f = add_special; + else { + warnx("%s:%d: skipping unknown command `%s'", + curfilename, linenum, fieldv[0]); + goterror = 1; + continue; + } + + if (fieldc < 2) { + warnx("%s:%d: %s %s", + curfilename, linenum, fieldv[0], + "command needs at least 1 argument, skipping"); + goterror = 1; + continue; + } + + f(fieldc, fieldv); + } + + if (ferror(cf)) { + warn("%s", curfilename); + goterror = 1; + } + fclose(cf); +} + + +void +parse_line(char *pline, int *fc, char **fv, int nf) +{ + char *p; + + p = pline; + *fc = 0; + + while (1) { + while (isspace((unsigned char)*p)) + p++; + + if (*p == '\0' || *p == '#') + break; + + if (*fc < nf) + fv[(*fc)++] = p; + + while (*p && !isspace((unsigned char)*p) && *p != '#') + p++; + + if (*p == '\0' || *p == '#') + break; + + *p++ = '\0'; + } + + if (*p) + *p = '\0'; /* needed for '#' case */ +} + + +void +add_srcdirs(int argc, char **argv) +{ + int i; + + for (i = 1; i < argc; i++) { + if (is_dir(argv[i])) + add_string(&srcdirs, argv[i]); + else { + warnx("%s:%d: `%s' is not a directory, skipping it", + curfilename, linenum, argv[i]); + goterror = 1; + } + } +} + + +void +add_progs(int argc, char **argv) +{ + int i; + + for (i = 1; i < argc; i++) + add_prog(argv[i]); +} + + +void +add_prog(char *progname) +{ + prog_t *p1, *p2; + + /* add to end, but be smart about dups */ + + for (p1 = NULL, p2 = progs; p2 != NULL; p1 = p2, p2 = p2->next) + if (!strcmp(p2->name, progname)) + return; + + p2 = malloc(sizeof(prog_t)); + if(p2) { + memset(p2, 0, sizeof(prog_t)); + p2->name = strdup(progname); + } + if (!p2 || !p2->name) + out_of_memory(); + + p2->next = NULL; + if (p1 == NULL) + progs = p2; + else + p1->next = p2; + + p2->ident = NULL; + p2->srcdir = NULL; + p2->realsrcdir = NULL; + p2->objdir = NULL; + p2->links = NULL; + p2->libs = NULL; + p2->libs_so = NULL; + p2->objs = NULL; + p2->keeplist = NULL; + p2->buildopts = NULL; + p2->goterror = 0; + + if (list_mode) + printf("%s\n",progname); +} + + +void +add_link(int argc, char **argv) +{ + int i; + prog_t *p = find_prog(argv[1]); + + if (p == NULL) { + warnx("%s:%d: no prog %s previously declared, skipping link", + curfilename, linenum, argv[1]); + goterror = 1; + return; + } + + for (i = 2; i < argc; i++) { + if (list_mode) + printf("%s\n",argv[i]); + + add_string(&p->links, argv[i]); + } +} + + +void +add_libs(int argc, char **argv) +{ + int i; + + for(i = 1; i < argc; i++) { + add_string(&libs, argv[i]); + if ( in_list(&libs_so, argv[i]) ) + warnx("%s:%d: " + "library `%s' specified as dynamic earlier", + curfilename, linenum, argv[i]); + } +} + + +void +add_libs_so(int argc, char **argv) +{ + int i; + + for(i = 1; i < argc; i++) { + add_string(&libs_so, argv[i]); + if ( in_list(&libs, argv[i]) ) + warnx("%s:%d: " + "library `%s' specified as static earlier", + curfilename, linenum, argv[i]); + } +} + + +void +add_buildopts(int argc, char **argv) +{ + int i; + + for (i = 1; i < argc; i++) + add_string(&buildopts, argv[i]); +} + + +void +add_special(int argc, char **argv) +{ + int i; + prog_t *p = find_prog(argv[1]); + + if (p == NULL) { + if (reading_cache) + return; + + warnx("%s:%d: no prog %s previously declared, skipping special", + curfilename, linenum, argv[1]); + goterror = 1; + return; + } + + if (!strcmp(argv[2], "ident")) { + if (argc != 4) + goto argcount; + if ((p->ident = strdup(argv[3])) == NULL) + out_of_memory(); + } else if (!strcmp(argv[2], "srcdir")) { + if (argc != 4) + goto argcount; + if ((p->srcdir = strdup(argv[3])) == NULL) + out_of_memory(); + } else if (!strcmp(argv[2], "objdir")) { + if(argc != 4) + goto argcount; + if((p->objdir = strdup(argv[3])) == NULL) + out_of_memory(); + } else if (!strcmp(argv[2], "objs")) { + p->objs = NULL; + for (i = 3; i < argc; i++) + add_string(&p->objs, argv[i]); + } else if (!strcmp(argv[2], "objpaths")) { + p->objpaths = NULL; + for (i = 3; i < argc; i++) + add_string(&p->objpaths, argv[i]); + } else if (!strcmp(argv[2], "keep")) { + p->keeplist = NULL; + for(i = 3; i < argc; i++) + add_string(&p->keeplist, argv[i]); + } else if (!strcmp(argv[2], "objvar")) { + if(argc != 4) + goto argcount; + if ((p->objvar = strdup(argv[3])) == NULL) + out_of_memory(); + } else if (!strcmp(argv[2], "buildopts")) { + p->buildopts = NULL; + for (i = 3; i < argc; i++) + add_string(&p->buildopts, argv[i]); + } else if (!strcmp(argv[2], "lib")) { + for (i = 3; i < argc; i++) + add_string(&p->libs, argv[i]); + } else { + warnx("%s:%d: bad parameter name `%s', skipping line", + curfilename, linenum, argv[2]); + goterror = 1; + } + return; + + argcount: + warnx("%s:%d: too %s arguments, expected \"special %s %s <string>\"", + curfilename, linenum, argc < 4? "few" : "many", argv[1], argv[2]); + goterror = 1; +} + + +prog_t *find_prog(char *str) +{ + prog_t *p; + + for (p = progs; p != NULL; p = p->next) + if (!strcmp(p->name, str)) + return p; + + return NULL; +} + + +/* + * ======================================================================== + * gen_outputs subsystem + * + */ + +/* helper subroutines */ + +void remove_error_progs(void); +void fillin_program(prog_t *p); +void gen_specials_cache(void); +void gen_output_makefile(void); +void gen_output_cfile(void); + +void fillin_program_objs(prog_t *p, char *path); +void top_makefile_rules(FILE *outmk); +void prog_makefile_rules(FILE *outmk, prog_t *p); +void output_strlst(FILE *outf, strlst_t *lst); +char *genident(char *str); +char *dir_search(char *progname); + + +void +gen_outputs(void) +{ + prog_t *p; + + for (p = progs; p != NULL; p = p->next) + fillin_program(p); + + remove_error_progs(); + gen_specials_cache(); + gen_output_cfile(); + gen_output_makefile(); + status(""); + fprintf(stderr, + "Run \"%s -f %s\" to build crunched binary.\n", + path_make, outmkname); +} + +/* + * run the makefile for the program to find which objects are necessary + */ +void +fillin_program(prog_t *p) +{ + char path[MAXPATHLEN]; + char line[MAXLINELEN]; + FILE *f; + + snprintf(line, MAXLINELEN, "filling in parms for %s", p->name); + status(line); + + if (!p->ident) + p->ident = genident(p->name); + + /* look for the source directory if one wasn't specified by a special */ + if (!p->srcdir) { + p->srcdir = dir_search(p->name); + } + + /* Determine the actual srcdir (maybe symlinked). */ + if (p->srcdir) { + snprintf(line, MAXLINELEN, "cd %s && echo -n `/bin/pwd`", + p->srcdir); + f = popen(line,"r"); + if (!f) + errx(1, "Can't execute: %s\n", line); + + path[0] = '\0'; + fgets(path, sizeof path, f); + if (pclose(f)) + errx(1, "Can't execute: %s\n", line); + + if (!*path) + errx(1, "Can't perform pwd on: %s\n", p->srcdir); + + p->realsrcdir = strdup(path); + } + + /* Unless the option to make object files was specified the + * the objects will be built in the source directory unless + * an object directory already exists. + */ + if (!makeobj && !p->objdir && p->srcdir) { + snprintf(line, sizeof line, "%s/%s", objprefix, p->realsrcdir); + if (is_dir(line)) { + if ((p->objdir = strdup(line)) == NULL) + out_of_memory(); + } else + p->objdir = p->realsrcdir; + } + + /* + * XXX look for a Makefile.{name} in local directory first. + * This lets us override the original Makefile. + */ + snprintf(path, sizeof(path), "Makefile.%s", p->name); + if (is_nonempty_file(path)) { + snprintf(line, MAXLINELEN, "Using %s for %s", path, p->name); + status(line); + } else + if (p->srcdir) + snprintf(path, sizeof(path), "%s/Makefile", p->srcdir); + if (!p->objs && p->srcdir && is_nonempty_file(path)) + fillin_program_objs(p, path); + + if (!p->srcdir && !p->objdir && verbose) + warnx("%s: %s: %s", + "warning: could not find source directory", + infilename, p->name); + if (!p->objs && verbose) + warnx("%s: %s: warning: could not find any .o files", + infilename, p->name); + + if ((!p->srcdir || !p->objdir) && !p->objs) + p->goterror = 1; +} + +void +fillin_program_objs(prog_t *p, char *path) +{ + char *obj, *cp; + int fd, rc; + FILE *f; + char *objvar="OBJS"; + strlst_t *s; + char line[MAXLINELEN]; + + /* discover the objs from the srcdir Makefile */ + + if ((fd = mkstemp(tempfname)) == -1) { + perror(tempfname); + exit(1); + } + if ((f = fdopen(fd, "w")) == NULL) { + warn("%s", tempfname); + goterror = 1; + return; + } + if (p->objvar) + objvar = p->objvar; + + /* + * XXX include outhdrname (e.g. to contain Make variables) + */ + if (outhdrname[0] != '\0') + fprintf(f, ".include \"%s\"\n", outhdrname); + fprintf(f, ".include \"%s\"\n", path); + fprintf(f, ".POSIX:\n"); + if (buildopts) { + fprintf(f, "BUILDOPTS+="); + output_strlst(f, buildopts); + } + fprintf(f, ".if defined(PROG)\n"); + fprintf(f, "%s?=${PROG}.o\n", objvar); + fprintf(f, ".endif\n"); + fprintf(f, "loop:\n\t@echo 'OBJS= '${%s}\n", objvar); + + fprintf(f, "crunchgen_objs:\n" + "\t@cd %s && %s -f %s $(BUILDOPTS) $(%s_OPTS)", + p->srcdir, path_make, tempfname, p->ident); + for (s = p->buildopts; s != NULL; s = s->next) + fprintf(f, " %s", s->str); + fprintf(f, " loop\n"); + + fclose(f); + + snprintf(line, MAXLINELEN, "cd %s && %s -f %s -B crunchgen_objs", + p->srcdir, path_make, tempfname); + if ((f = popen(line, "r")) == NULL) { + warn("submake pipe"); + goterror = 1; + return; + } + + while(fgets(line, MAXLINELEN, f)) { + if (strncmp(line, "OBJS= ", 6)) { + warnx("make error: %s", line); + goterror = 1; + continue; + } + + cp = line + 6; + while (isspace((unsigned char)*cp)) + cp++; + + while(*cp) { + obj = cp; + while (*cp && !isspace((unsigned char)*cp)) + cp++; + if (*cp) + *cp++ = '\0'; + add_string(&p->objs, obj); + while (isspace((unsigned char)*cp)) + cp++; + } + } + + if ((rc=pclose(f)) != 0) { + warnx("make error: make returned %d", rc); + goterror = 1; + } + + unlink(tempfname); +} + +void +remove_error_progs(void) +{ + prog_t *p1, *p2; + + p1 = NULL; p2 = progs; + while (p2 != NULL) { + if (!p2->goterror) + p1 = p2, p2 = p2->next; + else { + /* delete it from linked list */ + warnx("%s: %s: ignoring program because of errors", + infilename, p2->name); + if (p1) + p1->next = p2->next; + else + progs = p2->next; + p2 = p2->next; + } + } +} + +void +gen_specials_cache(void) +{ + FILE *cachef; + prog_t *p; + char line[MAXLINELEN]; + + snprintf(line, MAXLINELEN, "generating %s", cachename); + status(line); + + if ((cachef = fopen(cachename, "w")) == NULL) { + warn("%s", cachename); + goterror = 1; + return; + } + + fprintf(cachef, "# %s - parm cache generated from %s by crunchgen " + " %s\n\n", + cachename, infilename, CRUNCH_VERSION); + + for (p = progs; p != NULL; p = p->next) { + fprintf(cachef, "\n"); + if (p->srcdir) + fprintf(cachef, "special %s srcdir %s\n", + p->name, p->srcdir); + if (p->objdir) + fprintf(cachef, "special %s objdir %s\n", + p->name, p->objdir); + if (p->objs) { + fprintf(cachef, "special %s objs", p->name); + output_strlst(cachef, p->objs); + } + if (p->objpaths) { + fprintf(cachef, "special %s objpaths", p->name); + output_strlst(cachef, p->objpaths); + } + } + fclose(cachef); +} + + +void +gen_output_makefile(void) +{ + prog_t *p; + FILE *outmk; + char line[MAXLINELEN]; + + snprintf(line, MAXLINELEN, "generating %s", outmkname); + status(line); + + if ((outmk = fopen(outmkname, "w")) == NULL) { + warn("%s", outmkname); + goterror = 1; + return; + } + + fprintf(outmk, "# %s - generated from %s by crunchgen %s\n\n", + outmkname, infilename, CRUNCH_VERSION); + + if (outhdrname[0] != '\0') + fprintf(outmk, ".include \"%s\"\n", outhdrname); + + top_makefile_rules(outmk); + for (p = progs; p != NULL; p = p->next) + prog_makefile_rules(outmk, p); + + fprintf(outmk, "\n# ========\n"); + fclose(outmk); +} + + +void +gen_output_cfile(void) +{ + char **cp; + FILE *outcf; + prog_t *p; + strlst_t *s; + char line[MAXLINELEN]; + + snprintf(line, MAXLINELEN, "generating %s", outcfname); + status(line); + + if((outcf = fopen(outcfname, "w")) == NULL) { + warn("%s", outcfname); + goterror = 1; + return; + } + + fprintf(outcf, + "/* %s - generated from %s by crunchgen %s */\n", + outcfname, infilename, CRUNCH_VERSION); + + fprintf(outcf, "#define EXECNAME \"%s\"\n", execfname); + for (cp = crunched_skel; *cp != NULL; cp++) + fprintf(outcf, "%s\n", *cp); + + for (p = progs; p != NULL; p = p->next) + fprintf(outcf, "extern int _crunched_%s_stub();\n", p->ident); + + fprintf(outcf, "\nstruct stub entry_points[] = {\n"); + for (p = progs; p != NULL; p = p->next) { + fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", + p->name, p->ident); + for (s = p->links; s != NULL; s = s->next) + fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", + s->str, p->ident); + } + + fprintf(outcf, "\t{ EXECNAME, crunched_main },\n"); + fprintf(outcf, "\t{ NULL, NULL }\n};\n"); + fclose(outcf); +} + + +char *genident(char *str) +{ + char *n, *s, *d; + + /* + * generates a Makefile/C identifier from a program name, + * mapping '-' to '_' and ignoring all other non-identifier + * characters. This leads to programs named "foo.bar" and + * "foobar" to map to the same identifier. + */ + + if ((n = strdup(str)) == NULL) + return NULL; + for (d = s = n; *s != '\0'; s++) { + if (*s == '-') + *d++ = '_'; + else if (*s == '_' || isalnum((unsigned char)*s)) + *d++ = *s; + } + *d = '\0'; + return n; +} + + +char *dir_search(char *progname) +{ + char path[MAXPATHLEN]; + strlst_t *dir; + char *srcdir; + + for (dir = srcdirs; dir != NULL; dir = dir->next) { + snprintf(path, MAXPATHLEN, "%s/%s", dir->str, progname); + if (!is_dir(path)) + continue; + + if ((srcdir = strdup(path)) == NULL) + out_of_memory(); + + return srcdir; + } + return NULL; +} + + +void +top_makefile_rules(FILE *outmk) +{ + prog_t *p; + + fprintf(outmk, "LD?= ld\n"); + fprintf(outmk, "STRIPBIN?= strip\n"); + if ( subtract_strlst(&libs, &libs_so) ) + fprintf(outmk, "# NOTE: Some LIBS declarations below overridden by LIBS_SO\n"); + + fprintf(outmk, "LIBS+="); + output_strlst(outmk, libs); + + fprintf(outmk, "LIBS_SO+="); + output_strlst(outmk, libs_so); + + if (makeobj) { + fprintf(outmk, "MAKEOBJDIRPREFIX?=%s\n", objprefix); + fprintf(outmk, "MAKEENV=env MAKEOBJDIRPREFIX=$(MAKEOBJDIRPREFIX)\n"); + fprintf(outmk, "CRUNCHMAKE=$(MAKEENV) $(MAKE)\n"); + } else { + fprintf(outmk, "CRUNCHMAKE=$(MAKE)\n"); + } + + if (buildopts) { + fprintf(outmk, "BUILDOPTS+="); + output_strlst(outmk, buildopts); + } + + fprintf(outmk, "CRUNCHED_OBJS="); + for (p = progs; p != NULL; p = p->next) + fprintf(outmk, " %s.lo", p->name); + fprintf(outmk, "\n"); + + fprintf(outmk, "SUBMAKE_TARGETS="); + for (p = progs; p != NULL; p = p->next) + fprintf(outmk, " %s_make", p->ident); + fprintf(outmk, "\nSUBCLEAN_TARGETS="); + for (p = progs; p != NULL; p = p->next) + fprintf(outmk, " %s_clean", p->ident); + fprintf(outmk, "\n\n"); + + fprintf(outmk, "all: objs exe\nobjs: $(SUBMAKE_TARGETS)\n"); + fprintf(outmk, "exe: %s\n", execfname); + fprintf(outmk, "%s: %s.o $(CRUNCHED_OBJS) $(SUBMAKE_TARGETS)\n", execfname, execfname); + fprintf(outmk, ".if defined(LIBS_SO) && !empty(LIBS_SO)\n"); + fprintf(outmk, "\t$(CC) -o %s %s.o $(CRUNCHED_OBJS) \\\n", + execfname, execfname); + fprintf(outmk, "\t\t-Xlinker -Bstatic $(LIBS) \\\n"); + fprintf(outmk, "\t\t-Xlinker -Bdynamic $(LIBS_SO)\n"); + fprintf(outmk, ".else\n"); + fprintf(outmk, "\t$(CC) -static -o %s %s.o $(CRUNCHED_OBJS) $(LIBS)\n", + execfname, execfname); + fprintf(outmk, ".endif\n"); + fprintf(outmk, "\t$(STRIPBIN) %s\n", execfname); + fprintf(outmk, "realclean: clean subclean\n"); + fprintf(outmk, "clean:\n\trm -f %s *.lo *.o *_stub.c\n", execfname); + fprintf(outmk, "subclean: $(SUBCLEAN_TARGETS)\n"); +} + + +void +prog_makefile_rules(FILE *outmk, prog_t *p) +{ + strlst_t *lst; + + fprintf(outmk, "\n# -------- %s\n\n", p->name); + + fprintf(outmk, "%s_OBJDIR=", p->ident); + if (p->objdir) + fprintf(outmk, "%s", p->objdir); + else + fprintf(outmk, "$(MAKEOBJDIRPREFIX)/$(%s_REALSRCDIR)\n", + p->ident); + fprintf(outmk, "\n"); + + fprintf(outmk, "%s_OBJPATHS=", p->ident); + if (p->objpaths) + output_strlst(outmk, p->objpaths); + else { + for (lst = p->objs; lst != NULL; lst = lst->next) { + fprintf(outmk, " $(%s_OBJDIR)/%s", p->ident, lst->str); + } + fprintf(outmk, "\n"); + } + + if (p->srcdir && p->objs) { + fprintf(outmk, "%s_SRCDIR=%s\n", p->ident, p->srcdir); + fprintf(outmk, "%s_REALSRCDIR=%s\n", p->ident, p->realsrcdir); + + fprintf(outmk, "%s_OBJS=", p->ident); + output_strlst(outmk, p->objs); + if (p->buildopts != NULL) { + fprintf(outmk, "%s_OPTS+=", p->ident); + output_strlst(outmk, p->buildopts); + } +#if 0 + fprintf(outmk, "$(%s_OBJPATHS): %s_make\n\n", p->ident, p->ident); +#endif + fprintf(outmk, "%s_make:\n", p->ident); + fprintf(outmk, "\t(cd $(%s_SRCDIR) && ", p->ident); + if (makeobj) + fprintf(outmk, "$(CRUNCHMAKE) obj && "); + fprintf(outmk, "\\\n"); + fprintf(outmk, "\t\t$(CRUNCHMAKE) $(BUILDOPTS) $(%s_OPTS) depend &&", + p->ident); + fprintf(outmk, "\\\n"); + fprintf(outmk, "\t\t$(CRUNCHMAKE) $(BUILDOPTS) $(%s_OPTS) " + "$(%s_OBJS))", + p->ident, p->ident); + fprintf(outmk, "\n"); + fprintf(outmk, "%s_clean:\n", p->ident); + fprintf(outmk, "\t(cd $(%s_SRCDIR) && $(CRUNCHMAKE) $(BUILDOPTS) clean cleandepend)\n\n", + p->ident); + } else { + fprintf(outmk, "%s_make:\n", p->ident); + fprintf(outmk, "\t@echo \"** cannot make objs for %s\"\n\n", + p->name); + } + + if (p->libs) { + fprintf(outmk, "%s_LIBS=", p->ident); + output_strlst(outmk, p->libs); + } + + fprintf(outmk, "%s_stub.c:\n", p->name); + fprintf(outmk, "\techo \"" + "int _crunched_%s_stub(int argc, char **argv, char **envp)" + "{return main(argc,argv,envp);}\" >%s_stub.c\n", + p->ident, p->name); + fprintf(outmk, "%s.lo: %s_stub.o $(%s_OBJPATHS)", + p->name, p->name, p->ident); + if (p->libs) + fprintf(outmk, " $(%s_LIBS)", p->ident); + + fprintf(outmk, "\n"); + fprintf(outmk, "\t$(CC) -nostdlib -Wl,-dc -r -o %s.lo %s_stub.o $(%s_OBJPATHS)", + p->name, p->name, p->ident); + if (p->libs) + fprintf(outmk, " $(%s_LIBS)", p->ident); + fprintf(outmk, "\n"); + fprintf(outmk, "\tcrunchide -k _crunched_%s_stub ", p->ident); + for (lst = p->keeplist; lst != NULL; lst = lst->next) + fprintf(outmk, "-k _%s ", lst->str); + fprintf(outmk, "%s.lo\n", p->name); +} + +void +output_strlst(FILE *outf, strlst_t *lst) +{ + for (; lst != NULL; lst = lst->next) + if ( strlen(lst->str) ) + fprintf(outf, " %s", lst->str); + fprintf(outf, "\n"); +} + + +/* + * ======================================================================== + * general library routines + * + */ + +void +status(const char *str) +{ + static int lastlen = 0; + int len, spaces; + + if (!verbose) + return; + + len = strlen(str); + spaces = lastlen - len; + if (spaces < 1) + spaces = 1; + + fprintf(stderr, " [%s]%*.*s\r", str, spaces, spaces, " "); + fflush(stderr); + lastlen = len; +} + + +void +out_of_memory(void) +{ + err(1, "%s: %d: out of memory, stopping", infilename, linenum); +} + + +void +add_string(strlst_t **listp, char *str) +{ + strlst_t *p1, *p2; + + /* add to end, but be smart about dups */ + + for (p1 = NULL, p2 = *listp; p2 != NULL; p1 = p2, p2 = p2->next) + if (!strcmp(p2->str, str)) + return; + + p2 = malloc(sizeof(strlst_t)); + if (p2) { + p2->next = NULL; + p2->str = strdup(str); + } + if (!p2 || !p2->str) + out_of_memory(); + + if (p1 == NULL) + *listp = p2; + else + p1->next = p2; +} + +int +subtract_strlst(strlst_t **lista, strlst_t **listb) +{ + int subtract_count = 0; + strlst_t *p1; + for (p1 = *listb; p1 != NULL; p1 = p1->next) + if ( in_list(lista, p1->str) ) { + warnx("Will compile library `%s' dynamically", p1->str); + strcat(p1->str, ""); + subtract_count++; + } + return subtract_count; +} + +int +in_list(strlst_t **listp, char *str) +{ + strlst_t *p1; + for (p1 = *listp; p1 != NULL; p1 = p1->next) + if (!strcmp(p1->str, str)) + return 1; + return 0; +} + +int +is_dir(const char *pathname) +{ + struct stat buf; + + if (stat(pathname, &buf) == -1) + return 0; + + return S_ISDIR(buf.st_mode); +} + +int +is_nonempty_file(const char *pathname) +{ + struct stat buf; + + if (stat(pathname, &buf) == -1) + return 0; + + return S_ISREG(buf.st_mode) && buf.st_size > 0; +} |
