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source: driver/cfa.cc @ 76934fb

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Last change on this file since 76934fb was 00cc023, checked in by Peter A. Buhr <pabuhr@…>, 9 years ago
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File size: 11.4 KB

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1	//
2	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3	//
4	// The contents of this file are covered under the licence agreement in the
5	// file "LICENCE" distributed with Cforall.
6	//
7	// cfa.cc --
8	//
9	// Author : Peter A. Buhr
10	// Created On : Tue Aug 20 13:44:49 2002
11	// Last Modified By : Peter A. Buhr
12	// Last Modified On : Sat May 30 10:15:00 2015
13	// Update Count : 116
14	//
15
16	#include <iostream>
17	#include <cstdio> // perror
18	#include <cstdlib> // putenv, exit
19	#include <unistd.h> // execvp
20	#include <string> // STL version
21
22	#include "config.h" // configure info
23
24	using std::cerr;
25	using std::endl;
26	using std::string;
27
28
29	//#define __DEBUG_H__
30
31
32	bool prefix( string arg, string pre ) {
33	return arg.substr( 0, pre.size() ) == pre;
34	} // prefix
35
36
37	void shuffle( const char *args[], int S, int E, int N ) {
38	// S & E index 1 passed the end so adjust with -1
39	#ifdef __DEBUG_H__
40	cerr << "shuffle:" << S << " " << E << " " << N << endl;
41	#endif // __DEBUG_H__
42	for ( int j = E-1 + N; j > S-1 + N; j -=1 ) {
43	#ifdef __DEBUG_H__
44	cerr << "\t" << j << " " << j-N << endl;
45	#endif // __DEBUG_H__
46	args[j] = args[j-N];
47	} // for
48	} // shuffle
49
50
51	int main( int argc, char *argv[] ) {
52	string Version( VERSION ); // current version number from CONFIG
53	string Major( "0" ), Minor( "0" ), Patch( "0" ); // default version numbers
54	int posn1 = Version.find( "." ); // find the divider between major and minor version numbers
55	if ( posn1 == -1 ) { // not there ?
56	Major = Version;
57	} else {
58	Major = Version.substr( 0, posn1 );
59	int posn2 = Version.find( ".", posn1 + 1 ); // find the divider between minor and patch numbers
60	if ( posn2 == -1 ) { // not there ?
61	Minor = Version.substr( posn1 );
62	} else {
63	Minor = Version.substr( posn1 + 1, posn2 - posn1 - 1 );
64	Patch = Version.substr( posn2 + 1 );
65	} // if
66	} // if
67
68	string installincdir( CFA_INCDIR ); // fixed location of include files
69	string installlibdir( CFA_LIBDIR ); // fixed location of cc1 and cfa-cpp commands
70
71	string heading; // banner printed at start of cfa compilation
72	string arg; // current command-line argument during command-line parsing
73	string Bprefix; // path where gcc looks for compiler command steps
74	string langstd; // language standard
75
76	string compiler_path( GCC_PATH ); // path/name of C compiler
77	string compiler_name; // name of C compiler
78
79	bool nonoptarg = false; // indicates non-option argument specified
80	bool link = true; // linking as well as compiling
81	bool verbose = false; // -v flag
82	bool quiet = false; // -quiet flag
83	bool debug = true; // -debug flag
84	bool help = false; // -help flag
85	bool CFA_flag = false; // -CFA flag
86	bool cpp_flag = false; // -E or -M flag, preprocessor only
87	bool debugging = false; // -g flag
88
89	const char *args[argc + 100]; // cfa command line values, plus some space for additional flags
90	int sargs = 1; // starting location for arguments in args list
91	int nargs = sargs; // number of arguments in args list; 0 => command name
92
93	const char *libs[argc + 20]; // non-user libraries must come separately, plus some added libraries and flags
94	int nlibs = 0;
95
96	#ifdef __DEBUG_H__
97	cerr << "CFA:" << endl;
98	#endif // __DEBUG_H__
99
100	// process command-line arguments
101
102	for ( int i = 1; i < argc; i += 1 ) {
103	#ifdef __DEBUG_H__
104	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
105	#endif // __DEBUG_H__
106	arg = argv[i]; // convert to string value
107	#ifdef __DEBUG_H__
108	cerr << "arg:\"" << arg << "\"" << endl;
109	#endif // __DEBUG_H__
110	if ( prefix( arg, "-" ) ) {
111	// pass through arguments
112
113	if ( arg == "-Xlinker" \|\| arg == "-o" ) {
114	args[nargs] = argv[i]; // pass the argument along
115	nargs += 1;
116	i += 1;
117	if ( i == argc ) continue; // next argument available ?
118	args[nargs] = argv[i]; // pass the argument along
119	nargs += 1;
120	} else if ( arg == "-XCFA" ) { // CFA pass through
121	i += 1;
122	args[nargs] = ( *new string( string("-D__CFA_FLAG__=") + argv[i] ) ).c_str();
123	nargs += 1;
124
125	// CFA specific arguments
126
127	} else if ( arg == "-CFA" ) {
128	CFA_flag = true; // strip the -CFA flag
129	link = false;
130	args[nargs] = "-E"; // replace the argument with -E
131	nargs += 1;
132	} else if ( arg == "-debug" ) {
133	debug = true; // strip the debug flag
134	} else if ( arg == "-nodebug" ) {
135	debug = false; // strip the nodebug flag
136	} else if ( arg == "-quiet" ) {
137	quiet = true; // strip the quiet flag
138	} else if ( arg == "-noquiet" ) {
139	quiet = false; // strip the noquiet flag
140	} else if ( arg == "-help" ) {
141	help = true; // strip the help flag
142	} else if ( arg == "-nohelp" ) {
143	help = false; // strip the nohelp flag
144	} else if ( arg == "-compiler" ) {
145	// use the user specified compiler
146	i += 1;
147	if ( i == argc ) continue; // next argument available ?
148	compiler_path = argv[i];
149	if ( putenv( (char )( new string( string( "__U_COMPILER__=" ) + argv[i]) ).c_str() ) != 0 ) {
150	cerr << argv[0] << " error, cannot set environment variable." << endl;
151	exit( EXIT_FAILURE );
152	} // if
153
154	// C++ specific arguments
155
156	} else if ( arg == "-v" ) {
157	verbose = true; // verbosity required
158	args[nargs] = argv[i]; // pass the argument along
159	nargs += 1;
160	} else if ( arg == "-g" ) {
161	debugging = true; // symbolic debugging required
162	args[nargs] = argv[i]; // pass the argument along
163	nargs += 1;
164	} else if ( prefix( arg, "-B" ) ) {
165	Bprefix = arg.substr(2); // strip the -B flag
166	args[nargs] = ( *new string( string("-D__GCC_BPREFIX__=") + Bprefix ) ).c_str();
167	nargs += 1;
168	} else if ( prefix( arg, "-b" ) ) {
169	if ( arg.length() == 2 ) { // separate argument ?
170	i += 1;
171	if ( i == argc ) continue; // next argument available ?
172	arg += argv[i]; // concatenate argument
173	} // if
174	// later versions of gcc require the -b option to appear at the start of the command line
175	shuffle( args, sargs, nargs, 1 ); // make room at front of argument list
176	args[sargs] = ( *new string( arg ) ).c_str(); // pass the argument along
177	if ( putenv( (char )( new string( string( "__GCC_MACHINE__=" ) + arg ) ).c_str() ) != 0 ) {
178	cerr << argv[0] << " error, cannot set environment variable." << endl;
179	exit( EXIT_FAILURE );
180	} // if
181	sargs += 1;
182	nargs += 1;
183	} else if ( prefix( arg, "-V" ) ) {
184	if ( arg.length() == 2 ) { // separate argument ?
185	i += 1;
186	if ( i == argc ) continue; // next argument available ?
187	arg += argv[i]; // concatenate argument
188	} // if
189	// later versions of gcc require the -V option to appear at the start of the command line
190	shuffle( args, sargs, nargs, 1 ); // make room at front of argument list
191	args[sargs] = ( *new string( arg ) ).c_str(); // pass the argument along
192	if ( putenv( (char )( new string( string( "__GCC_VERSION__=" ) + arg ) ).c_str() ) != 0 ) {
193	cerr << argv[0] << " error, cannot set environment variable." << endl;
194	exit( EXIT_FAILURE );
195	} // if
196	sargs += 1;
197	nargs += 1;
198	} else if ( arg == "-c" \|\| arg == "-S" \|\| arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
199	args[nargs] = argv[i]; // pass the argument along
200	nargs += 1;
201	if ( arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
202	cpp_flag = true; // cpp only
203	} // if
204	link = false; // no linkage required
205	} else if ( arg[1] == 'l' ) {
206	// if the user specifies a library, load it after user code
207	libs[nlibs] = argv[i];
208	nlibs += 1;
209	} else {
210	// concatenate any other arguments
211	args[nargs] = argv[i];
212	nargs += 1;
213	} // if
214	} else {
215	// concatenate other arguments
216	args[nargs] = argv[i];
217	nargs += 1;
218	nonoptarg = true;
219	} // if
220	} // for
221
222	#ifdef __DEBUG_H__
223	cerr << "args:";
224	for ( int i = 1; i < nargs; i += 1 ) {
225	cerr << " " << args[i];
226	} // for
227	cerr << endl;
228	#endif // __DEBUG_H__
229
230	if ( cpp_flag && CFA_flag ) {
231	cerr << argv[0] << " error, cannot use -E and -CFA flags together." << endl;
232	exit( EXIT_FAILURE );
233	} // if
234
235	string d;
236	if ( debug ) {
237	d = "-d";
238	} // if
239
240	args[nargs] = "-I" CFA_INCDIR;
241	nargs += 1;
242
243	if ( link ) {
244	// include the cfa library in case it's needed
245	args[nargs] = "-L" CFA_LIBDIR;
246	nargs += 1;
247	args[nargs] = "-lcfa";
248	nargs += 1;
249	} // if
250
251	// add the correct set of flags based on the type of compile this is
252
253	args[nargs] = ( *new string( string("-D__CFA_MAJOR__=") + Major ) ).c_str();
254	nargs += 1;
255	args[nargs] = ( *new string( string("-D__CFA_MINOR__=") + Minor ) ).c_str();
256	nargs += 1;
257
258	if ( cpp_flag ) {
259	args[nargs] = "-D__CPP__";
260	nargs += 1;
261	} // if
262
263	if ( CFA_flag ) {
264	args[nargs] = "-D__CFA__";
265	nargs += 1;
266	} // if
267
268	if ( debug ) {
269	heading += " (debug)";
270	args[nargs] = "-D__CFA_DEBUG__";
271	nargs += 1;
272	} else {
273	heading += " (no debug)";
274	} // if
275
276	if ( Bprefix.length() == 0 ) {
277	Bprefix = installlibdir;
278	args[nargs] = ( *new string( string("-D__GCC_BPREFIX__=") + Bprefix ) ).c_str();
279	nargs += 1;
280	} // if
281
282	// execute the compilation command
283
284	args[0] = compiler_path.c_str(); // set compiler command for exec
285	// find actual name of the compiler independent of the path to it
286	int p = compiler_path.find_last_of( '/' ); // scan r -> l for first '/'
287	if ( p == -1 ) {
288	compiler_name = compiler_path;
289	} else {
290	compiler_name = *new string( compiler_path.substr( p + 1 ) );
291	} // if
292
293	if ( prefix( compiler_name, "gcc" ) ) { // allow suffix on gcc name
294	args[nargs] = "-no-integrated-cpp";
295	nargs += 1;
296	args[nargs] = "-Wno-deprecated";
297	nargs += 1;
298	args[nargs] = "-std=c99";
299	nargs += 1;
300	args[nargs] = ( *new string( string("-B") + Bprefix + "/" ) ).c_str();
301	nargs += 1;
302	} else {
303	cerr << argv[0] << " error, compiler " << compiler_name << " not supported." << endl;
304	exit( EXIT_FAILURE );
305	} // if
306
307	for ( int i = 0; i < nlibs; i += 1 ) { // copy non-user libraries after all user libraries
308	args[nargs] = libs[i];
309	nargs += 1;
310	} // for
311
312	args[nargs] = NULL; // terminate with NULL
313
314	#ifdef __DEBUG_H__
315	cerr << "nargs: " << nargs << endl;
316	cerr << "args:" << endl;
317	for ( int i = 0; args[i] != NULL; i += 1 ) {
318	cerr << " \"" << args[i] << "\"" << endl;
319	} // for
320	#endif // __DEBUG_H__
321
322	if ( ! quiet ) {
323	cerr << "CFA " << "Version " << Version << heading << endl;
324
325	if ( help ) {
326	cerr <<
327	"-debug\t\t\t: use cfa runtime with debug checking" << endl <<
328	"-help\t\t\t: print this help message" << endl <<
329	"-quiet\t\t\t: print no messages from the cfa command" << endl <<
330	"-CFA\t\t\t: run the cpp preprocessor and the cfa-cpp translator" << endl <<
331	"-XCFA -cfa-cpp-flag\t: pass next flag as-is to the cfa-cpp translator" << endl <<
332	"...\t\t\t: any other " << compiler_name << " flags" << endl;
333	} // if
334	} // if
335
336	if ( verbose ) {
337	if ( argc == 2 ) exit( EXIT_SUCCESS ); // if only the -v flag is specified, do not invoke gcc
338
339	for ( int i = 0; args[i] != NULL; i += 1 ) {
340	cerr << args[i] << " ";
341	} // for
342	cerr << endl;
343	} // if
344
345	if ( ! nonoptarg ) {
346	cerr << argv[0] << " error, no input files" << endl;
347	exit( EXIT_FAILURE );
348	} // if
349
350	// execute the command and return the result
351
352	execvp( args[0], (char const )args ); // should not return
353	perror( "CFA Translator error: cfa level, execvp" );
354	exit( EXIT_FAILURE );
355	} // main
356
357	// Local Variables: //
358	// tab-width: 4 //
359	// mode: c++ //
360	// compile-command: "make install" //
361	// End: //

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