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source: src/driver/cfa.cc @ cf37a8e

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Last change on this file since cf37a8e was d0542c4, checked in by Peter A. Buhr <pabuhr@…>, 8 years ago
add -no-include-std flag to fix recompilation issues
Property mode set to `100644`
File size: 12.4 KB

Line
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 : Tue Aug 2 12:23:11 2016
13	// Update Count : 147
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
55	int posn1 = Version.find( "." ); // find the divider between major and minor version numbers
56	if ( posn1 == -1 ) { // not there ?
57	Major = Version;
58	} else {
59	Major = Version.substr( 0, posn1 );
60	int posn2 = Version.find( ".", posn1 + 1 ); // find the divider between minor and patch numbers
61	if ( posn2 == -1 ) { // not there ?
62	Minor = Version.substr( posn1 );
63	} else {
64	Minor = Version.substr( posn1 + 1, posn2 - posn1 - 1 );
65	Patch = Version.substr( posn2 + 1 );
66	} // if
67	} // if
68
69	string installincdir( CFA_INCDIR ); // fixed location of include files
70	string installlibdir( CFA_LIBDIR ); // fixed location of cc1 and cfa-cpp commands
71
72	string heading; // banner printed at start of cfa compilation
73	string arg; // current command-line argument during command-line parsing
74	string Bprefix; // path where gcc looks for compiler command steps
75	string langstd; // language standard
76
77	string compiler_path( CFA_BACKEND_CC ); // path/name of C compiler
78	string compiler_name; // name of C compiler
79
80	bool nonoptarg = false; // indicates non-option argument specified
81	bool link = true; // linking as well as compiling
82	bool verbose = false; // -v flag
83	bool quiet = false; // -quiet flag
84	bool debug = true; // -debug flag
85	bool help = false; // -help flag
86	bool CFA_flag = false; // -CFA flag
87	bool cpp_flag = false; // -E or -M flag, preprocessor only
88	bool std_flag = false; // -std= flag
89	bool noincstd_flag = false; // -no-include-std= flag
90	bool debugging __attribute(( unused )) = false; // -g flag
91
92	const char *args[argc + 100]; // cfa command line values, plus some space for additional flags
93	int sargs = 1; // starting location for arguments in args list
94	int nargs = sargs; // number of arguments in args list; 0 => command name
95
96	const char *libs[argc + 20]; // non-user libraries must come separately, plus some added libraries and flags
97	int nlibs = 0;
98
99	#ifdef __DEBUG_H__
100	cerr << "CFA:" << endl;
101	#endif // __DEBUG_H__
102
103	// process command-line arguments
104
105	for ( int i = 1; i < argc; i += 1 ) {
106	#ifdef __DEBUG_H__
107	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
108	#endif // __DEBUG_H__
109	arg = argv[i]; // convert to string value
110	#ifdef __DEBUG_H__
111	cerr << "arg:\"" << arg << "\"" << endl;
112	#endif // __DEBUG_H__
113	if ( prefix( arg, "-" ) ) {
114	// pass through arguments
115
116	if ( arg == "-Xlinker" \|\| arg == "-o" ) {
117	args[nargs] = argv[i]; // pass the argument along
118	nargs += 1;
119	i += 1;
120	if ( i == argc ) continue; // next argument available ?
121	args[nargs] = argv[i]; // pass the argument along
122	nargs += 1;
123	} else if ( arg == "-XCFA" ) { // CFA pass through
124	i += 1;
125	args[nargs] = ( *new string( string("-D__CFA_FLAG__=") + argv[i] ) ).c_str();
126	nargs += 1;
127
128	// CFA specific arguments
129
130	} else if ( arg == "-CFA" ) {
131	CFA_flag = true; // strip the -CFA flag
132	link = false;
133	args[nargs] = "-E"; // replace the argument with -E
134	nargs += 1;
135	} else if ( arg == "-debug" ) {
136	debug = true; // strip the debug flag
137	} else if ( arg == "-nodebug" ) {
138	debug = false; // strip the nodebug flag
139	} else if ( arg == "-quiet" ) {
140	quiet = true; // strip the quiet flag
141	} else if ( arg == "-noquiet" ) {
142	quiet = false; // strip the noquiet flag
143	} else if ( arg == "-help" ) {
144	help = true; // strip the help flag
145	} else if ( arg == "-nohelp" ) {
146	help = false; // strip the nohelp flag
147	} else if ( arg == "-no-include-std" ) {
148	noincstd_flag = true; // strip the no-include-std flag
149	} else if ( arg == "-compiler" ) {
150	// use the user specified compiler
151	i += 1;
152	if ( i == argc ) continue; // next argument available ?
153	compiler_path = argv[i];
154	if ( putenv( (char )( new string( string( "__U_COMPILER__=" ) + argv[i]) ).c_str() ) != 0 ) {
155	cerr << argv[0] << " error, cannot set environment variable." << endl;
156	exit( EXIT_FAILURE );
157	} // if
158
159	// C specific arguments
160
161	} else if ( arg == "-v" ) {
162	verbose = true; // verbosity required
163	args[nargs] = argv[i]; // pass the argument along
164	nargs += 1;
165	} else if ( arg == "-g" ) {
166	debugging = true; // symbolic debugging required
167	args[nargs] = argv[i]; // pass the argument along
168	nargs += 1;
169	} else if ( prefix( arg, "-std=" ) ) {
170	std_flag = true; // -std=XX provided
171	args[nargs] = argv[i]; // pass the argument along
172	nargs += 1;
173	} else if ( prefix( arg, "-B" ) ) {
174	Bprefix = arg.substr(2); // strip the -B flag
175	args[nargs] = ( *new string( string("-D__GCC_BPREFIX__=") + Bprefix ) ).c_str();
176	nargs += 1;
177	} else if ( prefix( arg, "-b" ) ) {
178	if ( arg.length() == 2 ) { // separate argument ?
179	i += 1;
180	if ( i == argc ) continue; // next argument available ?
181	arg += argv[i]; // concatenate argument
182	} // if
183	// later versions of gcc require the -b option to appear at the start of the command line
184	shuffle( args, sargs, nargs, 1 ); // make room at front of argument list
185	args[sargs] = ( *new string( arg ) ).c_str(); // pass the argument along
186	if ( putenv( (char )( new string( string( "__GCC_MACHINE__=" ) + arg ) ).c_str() ) != 0 ) {
187	cerr << argv[0] << " error, cannot set environment variable." << endl;
188	exit( EXIT_FAILURE );
189	} // if
190	sargs += 1;
191	nargs += 1;
192	} else if ( prefix( arg, "-V" ) ) {
193	if ( arg.length() == 2 ) { // separate argument ?
194	i += 1;
195	if ( i == argc ) continue; // next argument available ?
196	arg += argv[i]; // concatenate argument
197	} // if
198	// later versions of gcc require the -V option to appear at the start of the command line
199	shuffle( args, sargs, nargs, 1 ); // make room at front of argument list
200	args[sargs] = ( *new string( arg ) ).c_str(); // pass the argument along
201	if ( putenv( (char )( new string( string( "__GCC_VERSION__=" ) + arg ) ).c_str() ) != 0 ) {
202	cerr << argv[0] << " error, cannot set environment variable." << endl;
203	exit( EXIT_FAILURE );
204	} // if
205	sargs += 1;
206	nargs += 1;
207	} else if ( arg == "-c" \|\| arg == "-S" \|\| arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
208	args[nargs] = argv[i]; // pass the argument along
209	nargs += 1;
210	if ( arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
211	cpp_flag = true; // cpp only
212	} // if
213	link = false; // no linkage required
214	} else if ( arg[1] == 'l' ) {
215	// if the user specifies a library, load it after user code
216	libs[nlibs] = argv[i];
217	nlibs += 1;
218	} else {
219	// concatenate any other arguments
220	args[nargs] = argv[i];
221	nargs += 1;
222	} // if
223	} else {
224	// concatenate other arguments
225	args[nargs] = argv[i];
226	nargs += 1;
227	nonoptarg = true;
228	} // if
229	} // for
230
231	#ifdef __DEBUG_H__
232	cerr << "args:";
233	for ( int i = 1; i < nargs; i += 1 ) {
234	cerr << " " << args[i];
235	} // for
236	cerr << endl;
237	#endif // __DEBUG_H__
238
239	if ( cpp_flag && CFA_flag ) {
240	cerr << argv[0] << " error, cannot use -E and -CFA flags together." << endl;
241	exit( EXIT_FAILURE );
242	} // if
243
244	string d;
245	if ( debug ) {
246	d = "-d";
247	} // if
248
249	// add the CFA include-library paths, which allow direct access to header files without directory qualification
250
251	args[nargs] = "-I" CFA_INCDIR;
252	nargs += 1;
253	if ( ! noincstd_flag ) { // do not use during build
254	args[nargs] = "-I" CFA_INCDIR "/stdhdr";
255	nargs += 1;
256	} // if
257	args[nargs] = "-I" CFA_INCDIR "/containers";
258	nargs += 1;
259
260	if ( link ) {
261	// include the cfa library in case it's needed
262	args[nargs] = "-L" CFA_LIBDIR;
263	nargs += 1;
264	args[nargs] = "-lcfa";
265	nargs += 1;
266	} // if
267
268	// add the correct set of flags based on the type of compile this is
269
270	args[nargs] = ( *new string( string("-D__CFA__=") + Major ) ).c_str();
271	nargs += 1;
272	args[nargs] = ( *new string( string("-D__CFA_MINOR__=") + Minor ) ).c_str();
273	nargs += 1;
274	args[nargs] = ( *new string( string("-D__CFA_PATCHLEVEL__=") + Patch ) ).c_str();
275	nargs += 1;
276	args[nargs] = "-D__CFA__";
277	nargs += 1;
278	args[nargs] = "-D__CFORALL__";
279	nargs += 1;
280
281	if ( cpp_flag ) {
282	args[nargs] = "-D__CPP__";
283	nargs += 1;
284	} // if
285
286	if ( CFA_flag ) {
287	args[nargs] = "-D__CFA_PREPROCESS_";
288	nargs += 1;
289	} // if
290
291	if ( debug ) {
292	heading += " (debug)";
293	args[nargs] = "-D__CFA_DEBUG__";
294	nargs += 1;
295	} else {
296	heading += " (no debug)";
297	} // if
298
299	if ( Bprefix.length() == 0 ) {
300	Bprefix = installlibdir;
301	args[nargs] = ( *new string( string("-D__GCC_BPREFIX__=") + Bprefix ) ).c_str();
302	nargs += 1;
303	} // if
304
305	// execute the compilation command
306
307	args[0] = compiler_path.c_str(); // set compiler command for exec
308	// find actual name of the compiler independent of the path to it
309	int p = compiler_path.find_last_of( '/' ); // scan r -> l for first '/'
310	if ( p == -1 ) {
311	compiler_name = compiler_path;
312	} else {
313	compiler_name = *new string( compiler_path.substr( p + 1 ) );
314	} // if
315
316	if ( prefix( compiler_name, "gcc" ) ) { // allow suffix on gcc name
317	args[nargs] = "-no-integrated-cpp";
318	nargs += 1;
319	args[nargs] = "-Wno-deprecated";
320	nargs += 1;
321	if ( ! std_flag ) { // default c99, if none specified
322	args[nargs] = "-std=gnu99";
323	nargs += 1;
324	} // if
325	args[nargs] = "-fgnu89-inline";
326	nargs += 1;
327	args[nargs] = ( *new string( string("-B") + Bprefix + "/" ) ).c_str();
328	nargs += 1;
329	args[nargs] = "-lm";
330	nargs += 1;
331	} else {
332	cerr << argv[0] << " error, compiler \"" << compiler_name << "\" unsupported." << endl;
333	exit( EXIT_FAILURE );
334	} // if
335
336	for ( int i = 0; i < nlibs; i += 1 ) { // copy non-user libraries after all user libraries
337	args[nargs] = libs[i];
338	nargs += 1;
339	} // for
340
341	args[nargs] = NULL; // terminate with NULL
342
343	#ifdef __DEBUG_H__
344	cerr << "nargs: " << nargs << endl;
345	cerr << "args:" << endl;
346	for ( int i = 0; args[i] != NULL; i += 1 ) {
347	cerr << " \"" << args[i] << "\"" << endl;
348	} // for
349	#endif // __DEBUG_H__
350
351	if ( ! quiet ) {
352	cerr << "CFA " << "Version " << Version << heading << endl;
353
354	if ( help ) {
355	cerr <<
356	"-debug\t\t\t: use cfa runtime with debug checking" << endl <<
357	"-help\t\t\t: print this help message" << endl <<
358	"-quiet\t\t\t: print no messages from the cfa command" << endl <<
359	"-CFA\t\t\t: run the cpp preprocessor and the cfa-cpp translator" << endl <<
360	"-XCFA -cfa-cpp-flag\t: pass next flag as-is to the cfa-cpp translator" << endl <<
361	"...\t\t\t: any other " << compiler_name << " flags" << endl;
362	} // if
363	} // if
364
365	if ( verbose ) {
366	if ( argc == 2 ) exit( EXIT_SUCCESS ); // if only the -v flag is specified, do not invoke gcc
367
368	for ( int i = 0; args[i] != NULL; i += 1 ) {
369	cerr << args[i] << " ";
370	} // for
371	cerr << endl;
372	} // if
373
374	if ( ! nonoptarg ) {
375	cerr << argv[0] << " error, no input files" << endl;
376	exit( EXIT_FAILURE );
377	} // if
378
379	// execute the command and return the result
380
381	execvp( args[0], (char const )args ); // should not return
382	perror( "CFA Translator error: cfa level, execvp" );
383	exit( EXIT_FAILURE );
384	} // main
385
386	// Local Variables: //
387	// tab-width: 4 //
388	// mode: c++ //
389	// compile-command: "make install" //
390	// End: //

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