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388
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1 /* ellcc.c - front-end for compiling Emacs modules
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2 Copyright (C) 1998, 1999 J. Kean Johnston.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA.
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20
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21 Author: J. Kean Johnston (jkj@sco.com).
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22 Please mail bugs and suggestions to the XEmacs maintainer.
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23 */
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24
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25 /*
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26 Here's the scoop. We would really like this to be a shell script, but
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424
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27 the various Windows platforms don't have reliable scripting that suits
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28 our needs. We don't want to rely on perl or some other such language
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388
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29 so we have to roll our own executable to act as a front-end for the
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30 compiler.
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31
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32 This program is used to invoke the compiler, the linker and to generate
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33 the module specific documentation and initialization code. We assume we
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34 are in 'compile' mode unless we encounter an argument which tells us
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35 that we're not. We take all arguments and pass them on directly to the
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36 compiler, except for a few which are specific to this program:
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37
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38 --mode=VALUE This sets the program mode. VALUE can be one of
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39 compile, link, init or verbose.
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40 --mod-name=NAME Sets the module name to the string NAME.
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41 --mod-title=TITLE Sets the module title to the string TITLE.
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42 --mod-version=VER Sets the module version to the string VER.
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43
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44 The idea is that Makefiles will use ellcc as the compiler for making
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45 dynamic Emacs modules, and life should be as simple as:
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46
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47 make CC=ellcc LD='ellcc --mode=link'
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48
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49 The only additional requirement is an entry in the Makefile to produce
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50 the module initialization file, which will usually be something along
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51 the lines of:
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52
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53 modinit.c: $(SRCS)
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54 ellcc --mode=init --mod-name=\"$(MODNAME)\" \
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55 --mod-title=\"$(MODTITLE)\" --mod-version=\"$(MODVERSION)\" \
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56 -o $@ $(SRCS)
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57
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58 See the samples for more details.
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59 */
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60
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424
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61 #include <../src/config.h>
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388
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62 #include <stdio.h>
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63 #include <stdlib.h>
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64 #include <string.h>
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424
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65 #include <ctype.h>
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66 #include <errno.h>
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67 #include <sys/types.h>
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388
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68
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69 #ifdef HAVE_UNISTD_H
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70 # include <unistd.h>
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71 #endif /* HAVE_UNISTD_H */
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72
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73 #define EMODULES_GATHER_VERSION
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412
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74 #include "emodules.h"
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75 #include "ellcc.h"
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388
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76
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77 #define DEBUG
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78
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79 #ifndef HAVE_SHLIB
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80 int
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424
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81 main (int argc, char *argv[])
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388
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82 {
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83 fprintf (stderr, "Dynamic modules not supported on this platform\n");
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424
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84 return EXIT_FAILURE;
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388
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85 }
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86 #else
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87
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88 /*
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89 * Try to figure out the commands we need to use to create shared objects,
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90 * and how to compile for PIC mode.
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91 */
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92
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93 /*
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94 * xnew, xrnew -- allocate, reallocate storage
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95 *
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96 * SYNOPSIS: Type *xnew (int n, Type);
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97 * Type *xrnew (OldPointer, int n, Type);
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98 */
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99 #ifdef chkmalloc
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100 # include "chkmalloc.h"
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101 # define xnew(n,Type) ((Type *) trace_malloc (__FILE__, __LINE__, \
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102 (n) * sizeof (Type)))
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103 # define xrnew(op,n,Type) ((Type *) trace_realloc (__FILE__, __LINE__, \
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104 (op), (n) * sizeof (Type)))
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105 #else
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106 # define xnew(n,Type) ((Type *) xmalloc ((n) * sizeof (Type)))
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107 # define xrnew(op,n,Type) ((Type *) xrealloc ((op), (n) * sizeof (Type)))
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108 #endif
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424
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109 static void *xmalloc (size_t);
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110 static void fatal (char *, char *);
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111 static void add_to_argv (CONST char *);
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112 static void do_compile_mode (void);
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113 static void do_link_mode (void);
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114 static void do_init_mode (void);
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388
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115
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116 #define SSTR(S) ((S)?(S):"")
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117
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118 #define ELLCC_COMPILE_MODE 0
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119 #define ELLCC_LINK_MODE 1
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120 #define ELLCC_INIT_MODE 2
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121
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122 int ellcc_mode = ELLCC_COMPILE_MODE;
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123 char *progname;
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124 char *mod_name = (char *)0, *mod_version = (char *)0, *mod_title = (char *)0;
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125 char *mod_output = (char *)0;
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126 int verbose = 0;
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127 char **exec_argv;
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128 int exec_argc = 1, *exec_args;
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129 int real_argc = 0;
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130 int prog_argc;
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131 char **prog_argv;
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132
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133 /*
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134 * We allow the user to over-ride things in the environment
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135 */
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136 char *ellcc, *ellld, *ellcflags, *ellldflags, *ellpicflags, *elldllflags;
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137 #define OVERENV(STR,EVAR,DFLT) \
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138 STR = getenv(EVAR); \
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139 if ((STR) == (char *)0) \
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140 STR = DFLT
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141
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142 int
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424
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143 main (int argc, char *argv[])
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388
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144 {
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145 char *tmp;
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146 int i, done_mode = 0;
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147
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148 prog_argc = argc;
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149 prog_argv = argv;
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150
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412
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151 #if defined(MSDOS) || defined(WINDOWSNT)
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424
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152 tmp = strrchr (argv[0], '\\');
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388
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153 if (tmp != (char *)0)
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154 tmp++;
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155 #elif !defined (VMS)
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424
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156 tmp = strrchr (argv[0], '/');
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388
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157 if (tmp != (char *)0)
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158 tmp++;
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159 #else
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160 tmp = argv[0];
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161 #endif
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162
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163 if (tmp != (char *)0)
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164 progname = tmp;
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165 else
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166 progname = argv[0];
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167
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168 tmp = &progname[strlen(progname)-2];
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169 if (strcmp (tmp, "cc") == 0)
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170 ellcc_mode = ELLCC_COMPILE_MODE;
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171 else if (strcmp (tmp, "ld") == 0)
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172 ellcc_mode = ELLCC_LINK_MODE;
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173 else if (strcmp (tmp, "it") == 0)
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174 ellcc_mode = ELLCC_INIT_MODE;
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175
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176 exec_argv = xnew(argc + 20, char *);
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177 exec_args = xnew(argc, int);
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178 for (i = 0; i < argc; i++)
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179 exec_args[i] = -1;
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180
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181 if (argc < 2)
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182 fatal ("too few arguments", (char *)0);
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183
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184 exec_args[0] = 0;
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185
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186 for (i = 1; i < argc; i++)
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187 {
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188 if (strncmp (argv[i], "--mode=", 7) == 0)
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189 {
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190 char *modeopt = argv[i] + 7;
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191
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192 if (done_mode && strcmp (modeopt, "verbose"))
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424
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193 fatal ("more than one mode specified", (char *) 0);
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388
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194 if (strcmp (modeopt, "link") == 0)
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195 {
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196 done_mode++;
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197 ellcc_mode = ELLCC_LINK_MODE;
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198 }
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199 else if (strcmp (modeopt, "compile") == 0)
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200 {
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201 done_mode++;
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202 ellcc_mode = ELLCC_COMPILE_MODE;
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203 }
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204 else if (strcmp (modeopt, "init") == 0)
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205 {
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206 done_mode++;
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207 ellcc_mode = ELLCC_INIT_MODE;
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208 }
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209 else if (strcmp (modeopt, "verbose") == 0)
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210 verbose += 1;
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211 }
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212 else if (strcmp (argv[i], "--mod-location") == 0)
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213 {
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214 printf ("%s\n", ELLCC_MODDIR);
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215 return 0;
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216 }
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217 else if (strcmp (argv[i], "--mod-site-location") == 0)
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218 {
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219 printf ("%s\n", ELLCC_SITEMODS);
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220 return 0;
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221 }
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222 else if (strcmp (argv[i], "--mod-archdir") == 0)
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223 {
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224 printf ("%s\n", ELLCC_ARCHDIR);
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225 return 0;
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226 }
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227 else if (strcmp (argv[i], "--mod-config") == 0)
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228 {
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229 printf ("%s\n", ELLCC_CONFIG);
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230 return 0;
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231 }
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424
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232 else if (strncmp (argv[i], "--mod-name=", 11) == 0)
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388
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233 mod_name = argv[i] + 11;
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424
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234 else if (strncmp (argv[i], "--mod-title=", 12) == 0)
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388
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235 mod_title = argv[i] + 12;
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424
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236 else if (strncmp (argv[i], "--mod-version=", 14) == 0)
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388
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237 mod_version = argv[i] + 14;
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424
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238 else if (strncmp (argv[i], "--mod-output=", 13) == 0)
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388
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239 mod_output = argv[i] + 13;
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240 else
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241 {
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242 exec_args[exec_argc] = i;
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243 exec_argc++;
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244 }
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245 }
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246
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247 if (ellcc_mode == ELLCC_LINK_MODE && mod_output == (char *)0)
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248 fatal ("must specify --mod-output when linking", (char *)0);
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249 if (ellcc_mode == ELLCC_INIT_MODE && mod_output == (char *)0)
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250 fatal ("must specify --mod-output when creating init file", (char *)0);
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251 if (ellcc_mode == ELLCC_INIT_MODE && mod_name == (char *)0)
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252 fatal ("must specify --mod-name when creating init file", (char *)0);
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253
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254 /*
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255 * We now have the list of arguments to pass to the compiler or
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256 * linker (or to process for doc files). We can do the real work
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257 * now.
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258 */
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259 if (verbose)
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260 printf ("ellcc driver version %s for EMODULES version %s (%ld)\n",
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261 ELLCC_EMACS_VER, EMODULES_VERSION, EMODULES_REVISION);
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262 #ifdef DEBUG
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263 if (verbose >= 2)
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264 {
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265 printf (" mode = %d (%s)\n", ellcc_mode,
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266 ellcc_mode == ELLCC_COMPILE_MODE ? "compile" :
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267 ellcc_mode == ELLCC_LINK_MODE ? "link" : "init");
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268 printf (" module_name = \"%s\"\n", SSTR(mod_name));
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269 printf (" module_title = \"%s\"\n", SSTR(mod_title));
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270 printf (" module_version = \"%s\"\n", SSTR(mod_version));
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271
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272 printf (" CC = %s\n", ELLCC_CC);
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273 printf (" CFLAGS = %s\n", ELLCC_CFLAGS);
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274 printf (" CC PIC flags = %s\n", ELLCC_DLL_CFLAGS);
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275 printf (" LD = %s\n", ELLCC_DLL_LD);
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276 printf (" LDFLAGS = %s\n", ELLCC_DLL_LDFLAGS);
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277 printf (" architecture = %s\n", ELLCC_CONFIG);
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278 printf (" Include directory = %s/include\n", ELLCC_ARCHDIR);
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279 printf ("\n");
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280 }
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281 #endif
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282
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283 if (exec_argc < 2)
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424
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284 fatal ("too few arguments", (char *) 0);
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388
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285
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286 /*
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287 * Get the over-rides from the environment
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288 */
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289 OVERENV(ellcc, "ELLCC", ELLCC_CC);
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290 OVERENV(ellld, "ELLLD", ELLCC_DLL_LD);
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291 OVERENV(ellcflags, "ELLCFLAGS", ELLCC_CFLAGS);
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292 OVERENV(ellldflags, "ELLLDFLAGS", ELLCC_LDFLAGS);
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293 OVERENV(elldllflags, "ELLDLLFLAGS", ELLCC_DLL_LDFLAGS);
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294 OVERENV(ellpicflags, "ELLPICFLAGS", ELLCC_DLL_CFLAGS);
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295
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296 if (ellcc_mode == ELLCC_COMPILE_MODE)
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297 do_compile_mode();
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298 else if (ellcc_mode == ELLCC_LINK_MODE)
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299 do_link_mode();
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300 else
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301 do_init_mode();
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302
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303 /*
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304 * The arguments to pass on to the desired program have now been set
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305 * up and we can run the program.
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306 */
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307 if (verbose)
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308 {
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309 for (i = 0; i < real_argc; i++)
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310 printf ("%s ", exec_argv[i]);
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311 printf ("\n");
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312 fflush (stdout);
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313 }
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314 exec_argv[real_argc] = (char *)0; /* Terminate argument list */
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315
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316 i = execvp (exec_argv[0], exec_argv);
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317 if (verbose)
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318 printf ("%s exited with status %d\n", exec_argv[0], i);
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319 return i;
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320 }
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321
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|
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322 /* Like malloc but get fatal error if memory is exhausted. */
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|
424
|
323 static void *
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324 xmalloc (size_t size)
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|
388
|
325 {
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|
424
|
326 void *result = malloc (size);
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|
388
|
327 if (result == NULL)
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|
424
|
328 fatal ("virtual memory exhausted", (char *)0);
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|
388
|
329 return result;
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|
|
330 }
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331
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|
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332 /* Print error message and exit. */
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424
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333 static void
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334 fatal (char *s1, char *s2)
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|
388
|
335 {
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|
|
336 fprintf (stderr, "%s: ", progname);
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|
|
337 fprintf (stderr, s1, s2);
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|
|
338 fprintf (stderr, "\n");
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|
424
|
339 exit (EXIT_FAILURE);
|
|
388
|
340 }
|
|
|
341
|
|
|
342 /*
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|
|
343 * Add a string to the argument vector list that will be passed on down
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|
|
344 * to the compiler or linker. We need to split individual words into
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|
|
345 * arguments, taking quoting into account. This can get ugly.
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|
|
346 */
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|
424
|
347 static void
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|
|
348 add_to_argv (CONST char *str)
|
|
388
|
349 {
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|
|
350 int sm = 0;
|
|
412
|
351 CONST char *s = (CONST char *)0;
|
|
388
|
352
|
|
412
|
353 if ((str == (CONST char *)0) || (str[0] == '\0'))
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|
388
|
354 return;
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|
|
355
|
|
|
356 while (*str)
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|
|
357 {
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|
|
358 switch (sm)
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|
|
359 {
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|
|
360 case 0: /* Start of case - string leading whitespace */
|
|
412
|
361 if (isspace (*str))
|
|
388
|
362 str++;
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|
|
363 else
|
|
|
364 {
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|
|
365 sm = 1; /* Change state to non-whitespace */
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|
|
366 s = str; /* Mark the start of THIS argument */
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|
|
367 }
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|
|
368 break;
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|
|
369
|
|
|
370 case 1: /* Non-whitespace character. Mark the start */
|
|
412
|
371 if (isspace (*str))
|
|
388
|
372 {
|
|
|
373 /* Reached the end of the argument. Add it. */
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|
|
374 int l = str-s;
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|
|
375 exec_argv[real_argc] = xnew (l+2, char);
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|
|
376 strncpy (exec_argv[real_argc], s, l);
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|
|
377 exec_argv[real_argc][l] = '\0';
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|
|
378 real_argc++;
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|
|
379 sm = 0; /* Back to start state */
|
|
412
|
380 s = (CONST char *)0;
|
|
388
|
381 break;
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|
|
382 }
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|
|
383 else if (*str == '\\')
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|
|
384 {
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|
|
385 sm = 2; /* Escaped character */
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|
|
386 str++;
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|
|
387 break;
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|
|
388 }
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|
|
389 else if (*str == '\'')
|
|
|
390 {
|
|
|
391 /* Start of quoted string (single quotes) */
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|
|
392 sm = 3;
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|
|
393 }
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|
|
394 else if (*str == '"')
|
|
|
395 {
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|
|
396 /* Start of quoted string (double quotes) */
|
|
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397 sm = 4;
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|
|
398 }
|
|
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399 else
|
|
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400 {
|
|
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401 /* This was just a normal character. Advance the pointer. */
|
|
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402 str++;
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|
|
403 }
|
|
|
404 break;
|
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405
|
|
|
406 case 2: /* Escaped character */
|
|
|
407 str++; /* Preserve the quoted character */
|
|
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408 sm = 1; /* Go back to gathering state */
|
|
|
409 break;
|
|
|
410
|
|
|
411 case 3: /* Inside single quoted string */
|
|
|
412 if (*str == '\'')
|
|
|
413 sm = 1;
|
|
|
414 str++;
|
|
|
415 break;
|
|
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416
|
|
|
417 case 4: /* inside double quoted string */
|
|
|
418 if (*str == '"')
|
|
|
419 sm = 1;
|
|
|
420 str++;
|
|
|
421 break;
|
|
|
422 }
|
|
|
423 }
|
|
|
424
|
|
412
|
425 if (s != (CONST char *)0)
|
|
388
|
426 {
|
|
|
427 int l = str-s;
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|
|
428 exec_argv[real_argc] = xnew (l+2, char);
|
|
|
429 strncpy (exec_argv[real_argc], s, l);
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|
|
430 exec_argv[real_argc][l] = '\0';
|
|
|
431 real_argc++;
|
|
412
|
432 s = (CONST char *)0;
|
|
388
|
433 }
|
|
|
434 }
|
|
|
435
|
|
|
436 /*
|
|
|
437 * For compile mode, things are pretty straight forward. All we need to do
|
|
|
438 * is build up the argument vector and exec() it. We must just make sure
|
|
|
439 * that we get all of the required arguments in place.
|
|
|
440 */
|
|
424
|
441 static void
|
|
|
442 do_compile_mode (void)
|
|
388
|
443 {
|
|
|
444 int i;
|
|
|
445 char ts[4096]; /* Plenty big enough */
|
|
|
446
|
|
|
447 add_to_argv (ellcc);
|
|
|
448 add_to_argv (ellcflags);
|
|
|
449 add_to_argv (ellpicflags);
|
|
|
450 add_to_argv ("-DPIC");
|
|
|
451 add_to_argv ("-DEMACS_MODULE");
|
|
|
452 #ifdef XEMACS
|
|
|
453 add_to_argv ("-DXEMACS_MODULE"); /* Cover both cases */
|
|
|
454 add_to_argv ("-Dxemacs");
|
|
|
455 #endif
|
|
|
456 add_to_argv ("-Demacs");
|
|
|
457 sprintf (ts, "-I%s/include", ELLCC_ARCHDIR);
|
|
|
458 add_to_argv (ts);
|
|
|
459 add_to_argv (ELLCC_CF_ALL);
|
|
|
460 for (i = 1; i < exec_argc; i++)
|
|
|
461 exec_argv[real_argc++] = strdup (prog_argv[exec_args[i]]);
|
|
|
462 }
|
|
|
463
|
|
|
464 /*
|
|
|
465 * For link mode, things are a little bit more complicated. We need to
|
|
|
466 * insert the linker commands first, replace any occurrence of ELLSONAME
|
|
|
467 * with the desired output file name, insert the output arguments, then
|
|
|
468 * all of the provided arguments, then the final post arguments. Once
|
|
|
469 * all of this has been done, the argument vector is ready to run.
|
|
|
470 */
|
|
424
|
471 static void
|
|
|
472 do_link_mode (void)
|
|
388
|
473 {
|
|
|
474 int i,x;
|
|
|
475 char *t, ts[4096]; /* Plenty big enough */
|
|
|
476
|
|
|
477 add_to_argv (ellld);
|
|
|
478 add_to_argv (ellldflags);
|
|
|
479 add_to_argv (elldllflags);
|
|
|
480 add_to_argv (ELLCC_DLL_LDO);
|
|
|
481 add_to_argv (mod_output);
|
|
|
482 for (i = 1; i < exec_argc; i++)
|
|
|
483 exec_argv[real_argc++] = strdup (prog_argv[exec_args[i]]);
|
|
|
484 add_to_argv (ELLCC_DLL_POST);
|
|
|
485
|
|
|
486 /*
|
|
|
487 * Now go through each argument and replace ELLSONAME with mod_output.
|
|
|
488 */
|
|
|
489 for (i = 0; i < real_argc; i++)
|
|
|
490 {
|
|
|
491 x = 0;
|
|
|
492 ts[0] = '\0';
|
|
|
493
|
|
|
494 t = exec_argv[i];
|
|
|
495 while (*t)
|
|
|
496 {
|
|
|
497 if (*t == 'E')
|
|
|
498 {
|
|
|
499 if (strncmp (t, "ELLSONAME", 9) == 0)
|
|
|
500 {
|
|
|
501 strcat (ts, mod_output);
|
|
|
502 t += 8;
|
|
|
503 x += strlen (mod_output);
|
|
|
504 }
|
|
|
505 else
|
|
|
506 {
|
|
|
507 ts[x] = *t;
|
|
|
508 x++;
|
|
|
509 ts[x] = '\0';
|
|
|
510 }
|
|
|
511 }
|
|
|
512 else
|
|
|
513 {
|
|
|
514 ts[x] = *t;
|
|
|
515 x++;
|
|
|
516 ts[x] = '\0';
|
|
|
517 }
|
|
|
518 t++;
|
|
|
519 }
|
|
|
520 free (exec_argv[i]);
|
|
|
521 exec_argv[i] = strdup (ts);
|
|
|
522 }
|
|
|
523 }
|
|
|
524
|
|
|
525 /*
|
|
|
526 * In init mode, things are a bit easier. We assume that the only things
|
|
|
527 * passed on the command line are the names of source files which the
|
|
|
528 * make-doc program will be processing. We prepare the output file with
|
|
|
529 * the header information first, as make-doc will append to the file by
|
|
|
530 * special dispensation.
|
|
|
531 */
|
|
424
|
532 static void
|
|
|
533 do_init_mode (void)
|
|
388
|
534 {
|
|
|
535 int i;
|
|
|
536 char ts[4096]; /* Plenty big enough */
|
|
|
537 char *mdocprog;
|
|
|
538 FILE *mout = fopen (mod_output, "w");
|
|
|
539
|
|
|
540 if (mout == (FILE *)0)
|
|
|
541 fatal ("failed to open output file", mod_output);
|
|
|
542 fprintf (mout, "/* DO NOT EDIT - AUTOMATICALLY GENERATED */\n\n");
|
|
|
543 fprintf (mout, "#include <emodules.h>\n\n");
|
|
|
544 fprintf (mout, "const long emodule_compiler = %ld;\n", EMODULES_REVISION);
|
|
|
545 fprintf (mout, "const char *emodule_name = \"%s\";\n", SSTR(mod_name));
|
|
|
546 fprintf (mout, "const char *emodule_version = \"%s\";\n", SSTR(mod_version));
|
|
|
547 fprintf (mout, "const char *emodule_title = \"%s\";\n", SSTR(mod_title));
|
|
|
548 fprintf (mout, "\n\n");
|
|
|
549 fprintf (mout, "void docs_of_%s()\n", SSTR(mod_name));
|
|
|
550 fclose (mout);
|
|
|
551
|
|
|
552 sprintf (ts, "%s/make-docfile", ELLCC_ARCHDIR);
|
|
|
553 OVERENV(mdocprog, "ELLMAKEDOC", ts);
|
|
|
554 add_to_argv (mdocprog);
|
|
|
555 sprintf (ts, "-E %s", mod_output);
|
|
|
556 add_to_argv (ts);
|
|
|
557 for (i = 1; i < exec_argc; i++)
|
|
|
558 exec_argv[real_argc++] = strdup (prog_argv[exec_args[i]]);
|
|
|
559 }
|
|
|
560
|
|
|
561 #endif /* HAVE_SHLIB */
|
|
|
562
|
