X-Git-Url: http://git.chise.org/gitweb/?p=chise%2Fxemacs-chise.git.1;a=blobdiff_plain;f=lib-src%2Fellcc.c;fp=lib-src%2Fellcc.c;h=acc3abe6cf58b1edfa9e6827f8e1f43e5669cae0;hp=0000000000000000000000000000000000000000;hb=f3ec20f455f3f1212d2c5ee4cadc984330da9c38;hpb=5625b2eceaf697f104b5f883ffa73dca6e8fc005 diff --git a/lib-src/ellcc.c b/lib-src/ellcc.c new file mode 100644 index 0000000..acc3abe --- /dev/null +++ b/lib-src/ellcc.c @@ -0,0 +1,681 @@ +/* ellcc.c - front-end for compiling Emacs modules +Copyright (C) 1998, 1999 J. Kean Johnston. + +This file is part of XEmacs. + +XEmacs is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +XEmacs is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with XEmacs; see the file COPYING. If not, write to +the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. + +Author: J. Kean Johnston (jkj@sco.com). +Please mail bugs and suggestions to the XEmacs maintainer. +*/ + +/* +Here's the scoop. We would really like this to be a shell script, but +the various Windows platforms dont have reliable scripting that suits +our needs. We dont want to reply on perl or some other such language +so we have to roll our own executable to act as a front-end for the +compiler. + +This program is used to invoke the compiler, the linker and to generate +the module specific documentation and initialization code. We assume we +are in 'compile' mode unless we encounter an argument which tells us +that we're not. We take all arguments and pass them on directly to the +compiler, except for a few which are specific to this program: + + --mode=VALUE This sets the program mode. VALUE can be one of + compile, link, init or verbose. + --mod-name=NAME Sets the module name to the string NAME. + --mod-title=TITLE Sets the module title to the string TITLE. + --mod-version=VER Sets the module version to the string VER. + +The idea is that Makefiles will use ellcc as the compiler for making +dynamic Emacs modules, and life should be as simple as: + + make CC=ellcc LD='ellcc --mode=link' + +The only additional requirement is an entry in the Makefile to produce +the module initialization file, which will usually be something along +the lines of: + + modinit.c: $(SRCS) + ellcc --mode=init --mod-name=\"$(MODNAME)\" \ + --mod-title=\"$(MODTITLE)\" --mod-version=\"$(MODVERSION)\" \ + -o $@ $(SRCS) + +See the samples for more details. +*/ + +#include +#include + +#ifdef MSDOS +# include +# include +# include +# ifndef HAVE_CONFIG_H +# define DOS_NT +# include +# endif +#endif /* MSDOS */ + +#ifdef WINDOWSNT +# include +# include +# include +# include +# define MAXPATHLEN _MAX_PATH +# ifdef HAVE_CONFIG_H +# undef HAVE_NTGUI +# else +# define DOS_NT +# define HAVE_GETCWD +# endif /* not HAVE_CONFIG_H */ +#endif /* WINDOWSNT */ + +#ifdef HAVE_CONFIG_H +# include + /* On some systems, Emacs defines static as nothing for the sake + of unexec. We don't want that here since we don't use unexec. */ +# undef static +#endif /* HAVE_CONFIG_H */ + +#if !defined (WINDOWSNT) && defined (STDC_HEADERS) +#include +#include +#endif + +#ifdef HAVE_UNISTD_H +# include +#else +# ifdef HAVE_GETCWD + extern char *getcwd (); +# endif +#endif /* HAVE_UNISTD_H */ + +#include +#include +#include +#ifndef errno + extern int errno; +#endif +#include +#include + +#define EMODULES_GATHER_VERSION +#include "emodules.h" +#include "ellcc.h" + +#if !defined (S_ISREG) && defined (S_IFREG) +# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) +#endif + +/* Exit codes for success and failure. */ +#ifdef VMS +# define GOOD 1 +# define BAD 0 +#else +# define GOOD 0 +# define BAD 1 +#endif + +#define DEBUG + +#ifndef HAVE_SHLIB +int +main() +{ + fprintf (stderr, "Dynamic modules not supported on this platform\n"); + return (BAD); +} +#else + +/* + * Try to figure out the commands we need to use to create shared objects, + * and how to compile for PIC mode. + */ + +/* + * xnew, xrnew -- allocate, reallocate storage + * + * SYNOPSIS: Type *xnew (int n, Type); + * Type *xrnew (OldPointer, int n, Type); + */ +#ifdef chkmalloc +# include "chkmalloc.h" +# define xnew(n,Type) ((Type *) trace_malloc (__FILE__, __LINE__, \ + (n) * sizeof (Type))) +# define xrnew(op,n,Type) ((Type *) trace_realloc (__FILE__, __LINE__, \ + (op), (n) * sizeof (Type))) +#else +# define xnew(n,Type) ((Type *) xmalloc ((n) * sizeof (Type))) +# define xrnew(op,n,Type) ((Type *) xrealloc ((op), (n) * sizeof (Type))) +#endif +long *xmalloc (), *xrealloc (); +void fatal (), pfatal (); +char *ellcc_strchr (), *ellcc_strrchr (); +void add_to_argv (); +void do_compile_mode(), do_link_mode(), do_init_mode(); + +#define SSTR(S) ((S)?(S):"") + +#define ELLCC_COMPILE_MODE 0 +#define ELLCC_LINK_MODE 1 +#define ELLCC_INIT_MODE 2 + +int ellcc_mode = ELLCC_COMPILE_MODE; +char *progname; +char *mod_name = (char *)0, *mod_version = (char *)0, *mod_title = (char *)0; +char *mod_output = (char *)0; +int verbose = 0; +char **exec_argv; +int exec_argc = 1, *exec_args; +int real_argc = 0; +int prog_argc; +char **prog_argv; + +/* + * We allow the user to over-ride things in the environment + */ +char *ellcc, *ellld, *ellcflags, *ellldflags, *ellpicflags, *elldllflags; +#define OVERENV(STR,EVAR,DFLT) \ + STR = getenv(EVAR); \ + if ((STR) == (char *)0) \ + STR = DFLT + +int +main (argc, argv) + int argc; + char *argv[]; +{ + char *tmp; + int i, done_mode = 0; + + prog_argc = argc; + prog_argv = argv; + +#if defined(MSDOS) || defined(WINDOWSNT) + tmp = ellcc_strrchr (argv[0], '\\'); + if (tmp != (char *)0) + tmp++; +#elif !defined (VMS) + tmp = ellcc_strrchr (argv[0], '/'); + if (tmp != (char *)0) + tmp++; +#else + tmp = argv[0]; +#endif + + if (tmp != (char *)0) + progname = tmp; + else + progname = argv[0]; + + tmp = &progname[strlen(progname)-2]; + if (strcmp (tmp, "cc") == 0) + ellcc_mode = ELLCC_COMPILE_MODE; + else if (strcmp (tmp, "ld") == 0) + ellcc_mode = ELLCC_LINK_MODE; + else if (strcmp (tmp, "it") == 0) + ellcc_mode = ELLCC_INIT_MODE; + + exec_argv = xnew(argc + 20, char *); + exec_args = xnew(argc, int); + for (i = 0; i < argc; i++) + exec_args[i] = -1; + + if (argc < 2) + fatal ("too few arguments", (char *)0); + + exec_args[0] = 0; + + for (i = 1; i < argc; i++) + { + if (strncmp (argv[i], "--mode=", 7) == 0) + { + char *modeopt = argv[i] + 7; + + if (done_mode && strcmp (modeopt, "verbose")) + fatal ("more than one mode specified"); + if (strcmp (modeopt, "link") == 0) + { + done_mode++; + ellcc_mode = ELLCC_LINK_MODE; + } + else if (strcmp (modeopt, "compile") == 0) + { + done_mode++; + ellcc_mode = ELLCC_COMPILE_MODE; + } + else if (strcmp (modeopt, "init") == 0) + { + done_mode++; + ellcc_mode = ELLCC_INIT_MODE; + } + else if (strcmp (modeopt, "verbose") == 0) + verbose += 1; + } + else if (strcmp (argv[i], "--mod-location") == 0) + { + printf ("%s\n", ELLCC_MODDIR); + return 0; + } + else if (strcmp (argv[i], "--mod-site-location") == 0) + { + printf ("%s\n", ELLCC_SITEMODS); + return 0; + } + else if (strcmp (argv[i], "--mod-archdir") == 0) + { + printf ("%s\n", ELLCC_ARCHDIR); + return 0; + } + else if (strcmp (argv[i], "--mod-config") == 0) + { + printf ("%s\n", ELLCC_CONFIG); + return 0; + } + else if (strncmp (argv[i], "--mod-name=", 10) == 0) + mod_name = argv[i] + 11; + else if (strncmp (argv[i], "--mod-title=", 11) == 0) + mod_title = argv[i] + 12; + else if (strncmp (argv[i], "--mod-version=", 13) == 0) + mod_version = argv[i] + 14; + else if (strncmp (argv[i], "--mod-output=", 12) == 0) + mod_output = argv[i] + 13; + else + { + exec_args[exec_argc] = i; + exec_argc++; + } + } + + if (ellcc_mode == ELLCC_LINK_MODE && mod_output == (char *)0) + fatal ("must specify --mod-output when linking", (char *)0); + if (ellcc_mode == ELLCC_INIT_MODE && mod_output == (char *)0) + fatal ("must specify --mod-output when creating init file", (char *)0); + if (ellcc_mode == ELLCC_INIT_MODE && mod_name == (char *)0) + fatal ("must specify --mod-name when creating init file", (char *)0); + + /* + * We now have the list of arguments to pass to the compiler or + * linker (or to process for doc files). We can do the real work + * now. + */ + if (verbose) + printf ("ellcc driver version %s for EMODULES version %s (%ld)\n", + ELLCC_EMACS_VER, EMODULES_VERSION, EMODULES_REVISION); +#ifdef DEBUG + if (verbose >= 2) + { + printf (" mode = %d (%s)\n", ellcc_mode, + ellcc_mode == ELLCC_COMPILE_MODE ? "compile" : + ellcc_mode == ELLCC_LINK_MODE ? "link" : "init"); + printf (" module_name = \"%s\"\n", SSTR(mod_name)); + printf (" module_title = \"%s\"\n", SSTR(mod_title)); + printf (" module_version = \"%s\"\n", SSTR(mod_version)); + + printf (" CC = %s\n", ELLCC_CC); + printf (" CFLAGS = %s\n", ELLCC_CFLAGS); + printf (" CC PIC flags = %s\n", ELLCC_DLL_CFLAGS); + printf (" LD = %s\n", ELLCC_DLL_LD); + printf (" LDFLAGS = %s\n", ELLCC_DLL_LDFLAGS); + printf (" architecture = %s\n", ELLCC_CONFIG); + printf (" Include directory = %s/include\n", ELLCC_ARCHDIR); + printf ("\n"); + } +#endif + + if (exec_argc < 2) + fatal ("too few arguments"); + + /* + * Get the over-rides from the environment + */ + OVERENV(ellcc, "ELLCC", ELLCC_CC); + OVERENV(ellld, "ELLLD", ELLCC_DLL_LD); + OVERENV(ellcflags, "ELLCFLAGS", ELLCC_CFLAGS); + OVERENV(ellldflags, "ELLLDFLAGS", ELLCC_LDFLAGS); + OVERENV(elldllflags, "ELLDLLFLAGS", ELLCC_DLL_LDFLAGS); + OVERENV(ellpicflags, "ELLPICFLAGS", ELLCC_DLL_CFLAGS); + + if (ellcc_mode == ELLCC_COMPILE_MODE) + do_compile_mode(); + else if (ellcc_mode == ELLCC_LINK_MODE) + do_link_mode(); + else + do_init_mode(); + + /* + * The arguments to pass on to the desired program have now been set + * up and we can run the program. + */ + if (verbose) + { + for (i = 0; i < real_argc; i++) + printf ("%s ", exec_argv[i]); + printf ("\n"); + fflush (stdout); + } + exec_argv[real_argc] = (char *)0; /* Terminate argument list */ + + i = execvp (exec_argv[0], exec_argv); + if (verbose) + printf ("%s exited with status %d\n", exec_argv[0], i); + return i; +} + +/* Like malloc but get fatal error if memory is exhausted. */ +long * +xmalloc (size) + unsigned int size; +{ + long *result = (long *) malloc (size); + if (result == NULL) + fatal ("virtual memory exhausted", (char *)NULL); + return result; +} + +long * +xrealloc (ptr, size) + char *ptr; + unsigned int size; +{ + long *result = (long *) realloc (ptr, size); + if (result == NULL) + fatal ("virtual memory exhausted", (char *)NULL); + return result; +} + +/* Print error message and exit. */ +void +fatal (s1, s2) + char *s1, *s2; +{ + fprintf (stderr, "%s: ", progname); + fprintf (stderr, s1, s2); + fprintf (stderr, "\n"); + exit (BAD); +} + +void +pfatal (s1) + char *s1; +{ + perror (s1); + exit (BAD); +} + +/* + * Return the ptr in sp at which the character c last + * appears; NULL if not found + * + * Identical to System V strrchr, included for portability. + */ +char * +ellcc_strrchr (sp, c) + register char *sp, c; +{ + register char *r; + + r = NULL; + do + { + if (*sp == c) + r = sp; + } while (*sp++); + return r; +} + +/* + * Return the ptr in sp at which the character c first + * appears; NULL if not found + * + * Identical to System V strchr, included for portability. + */ +char * +ellcc_strchr (sp, c) + register char *sp, c; +{ + do + { + if (*sp == c) + return sp; + } while (*sp++); + return NULL; +} + +/* + * Add a string to the argument vector list that will be passed on down + * to the compiler or linker. We need to split individual words into + * arguments, taking quoting into account. This can get ugly. + */ +void +add_to_argv (str) + CONST char *str; +{ + int sm = 0; + CONST char *s = (CONST char *)0; + + if ((str == (CONST char *)0) || (str[0] == '\0')) + return; + + while (*str) + { + switch (sm) + { + case 0: /* Start of case - string leading whitespace */ + if (isspace (*str)) + str++; + else + { + sm = 1; /* Change state to non-whitespace */ + s = str; /* Mark the start of THIS argument */ + } + break; + + case 1: /* Non-whitespace character. Mark the start */ + if (isspace (*str)) + { + /* Reached the end of the argument. Add it. */ + int l = str-s; + exec_argv[real_argc] = xnew (l+2, char); + strncpy (exec_argv[real_argc], s, l); + exec_argv[real_argc][l] = '\0'; + real_argc++; + sm = 0; /* Back to start state */ + s = (CONST char *)0; + break; + } + else if (*str == '\\') + { + sm = 2; /* Escaped character */ + str++; + break; + } + else if (*str == '\'') + { + /* Start of quoted string (single quotes) */ + sm = 3; + } + else if (*str == '"') + { + /* Start of quoted string (double quotes) */ + sm = 4; + } + else + { + /* This was just a normal character. Advance the pointer. */ + str++; + } + break; + + case 2: /* Escaped character */ + str++; /* Preserve the quoted character */ + sm = 1; /* Go back to gathering state */ + break; + + case 3: /* Inside single quoted string */ + if (*str == '\'') + sm = 1; + str++; + break; + + case 4: /* inside double quoted string */ + if (*str == '"') + sm = 1; + str++; + break; + } + } + + if (s != (CONST char *)0) + { + int l = str-s; + exec_argv[real_argc] = xnew (l+2, char); + strncpy (exec_argv[real_argc], s, l); + exec_argv[real_argc][l] = '\0'; + real_argc++; + s = (CONST char *)0; + } +} + +/* + * For compile mode, things are pretty straight forward. All we need to do + * is build up the argument vector and exec() it. We must just make sure + * that we get all of the required arguments in place. + */ +void +do_compile_mode() +{ + int i; + char ts[4096]; /* Plenty big enough */ + + add_to_argv (ellcc); + add_to_argv (ellcflags); + add_to_argv (ellpicflags); + add_to_argv ("-DPIC"); + add_to_argv ("-DEMACS_MODULE"); +#ifdef XEMACS + add_to_argv ("-DXEMACS_MODULE"); /* Cover both cases */ + add_to_argv ("-Dxemacs"); +#endif + add_to_argv ("-Demacs"); + sprintf (ts, "-I%s/include", ELLCC_ARCHDIR); + add_to_argv (ts); + add_to_argv (ELLCC_CF_ALL); + for (i = 1; i < exec_argc; i++) + exec_argv[real_argc++] = strdup (prog_argv[exec_args[i]]); +} + +/* + * For link mode, things are a little bit more complicated. We need to + * insert the linker commands first, replace any occurrence of ELLSONAME + * with the desired output file name, insert the output arguments, then + * all of the provided arguments, then the final post arguments. Once + * all of this has been done, the argument vector is ready to run. + */ +void +do_link_mode() +{ + int i,x; + char *t, ts[4096]; /* Plenty big enough */ + + add_to_argv (ellld); + add_to_argv (ellldflags); + add_to_argv (elldllflags); + add_to_argv (ELLCC_DLL_LDO); + add_to_argv (mod_output); + for (i = 1; i < exec_argc; i++) + exec_argv[real_argc++] = strdup (prog_argv[exec_args[i]]); + add_to_argv (ELLCC_DLL_POST); + + /* + * Now go through each argument and replace ELLSONAME with mod_output. + */ + for (i = 0; i < real_argc; i++) + { + x = 0; + ts[0] = '\0'; + + t = exec_argv[i]; + while (*t) + { + if (*t == 'E') + { + if (strncmp (t, "ELLSONAME", 9) == 0) + { + strcat (ts, mod_output); + t += 8; + x += strlen (mod_output); + } + else + { + ts[x] = *t; + x++; + ts[x] = '\0'; + } + } + else + { + ts[x] = *t; + x++; + ts[x] = '\0'; + } + t++; + } + free (exec_argv[i]); + exec_argv[i] = strdup (ts); + } +} + +/* + * In init mode, things are a bit easier. We assume that the only things + * passed on the command line are the names of source files which the + * make-doc program will be processing. We prepare the output file with + * the header information first, as make-doc will append to the file by + * special dispensation. + */ +void +do_init_mode() +{ + int i; + char ts[4096]; /* Plenty big enough */ + char *mdocprog; + FILE *mout = fopen (mod_output, "w"); + + if (mout == (FILE *)0) + fatal ("failed to open output file", mod_output); + fprintf (mout, "/* DO NOT EDIT - AUTOMATICALLY GENERATED */\n\n"); + fprintf (mout, "#include \n\n"); + fprintf (mout, "const long emodule_compiler = %ld;\n", EMODULES_REVISION); + fprintf (mout, "const char *emodule_name = \"%s\";\n", SSTR(mod_name)); + fprintf (mout, "const char *emodule_version = \"%s\";\n", SSTR(mod_version)); + fprintf (mout, "const char *emodule_title = \"%s\";\n", SSTR(mod_title)); + fprintf (mout, "\n\n"); + fprintf (mout, "void docs_of_%s()\n", SSTR(mod_name)); + fclose (mout); + + sprintf (ts, "%s/make-docfile", ELLCC_ARCHDIR); + OVERENV(mdocprog, "ELLMAKEDOC", ts); + add_to_argv (mdocprog); + sprintf (ts, "-E %s", mod_output); + add_to_argv (ts); + for (i = 1; i < exec_argc; i++) + exec_argv[real_argc++] = strdup (prog_argv[exec_args[i]]); +} + +#endif /* HAVE_SHLIB */ +