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source: driver/cc1.cc @ 3b4750d

ADTarm-ehast-experimentalenumforall-pointer-decayjacob/cs343-translationnew-astnew-ast-unique-exprpthread-emulationqualifiedEnum

Last change on this file since 3b4750d was db62eef, checked in by Peter A. Buhr <pabuhr@…>, 4 years ago
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[b87a5ed]	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	//
[6dc19544]	7	// cc1.cc --
[b87a5ed]	8	//
	9	// Author : Peter A. Buhr
[51b7345]	10	// Created On : Fri Aug 26 14:23:51 2005
	11	// Last Modified By : Peter A. Buhr
[db62eef]	12	// Last Modified On : Thu Aug 13 21:03:15 2020
	13	// Update Count : 407
[51b7345]	14	//
	15
	16	#include <iostream>
	17	using std::cerr;
	18	using std::endl;
	19	#include <string>
	20	using std::string;
[2c60af75]	21	#include <algorithm> // find
[b87a5ed]	22	#include <cstdio> // stderr, stdout, perror, fprintf
	23	#include <cstdlib> // getenv, exit, mkstemp
	24	#include <unistd.h> // execvp, fork, unlink
	25	#include <sys/wait.h> // wait
[bbb1b35]	26	#include <fcntl.h>
	27
[51b7345]	28
[b87a5ed]	29	#include "config.h" // configure info
[51b7345]	30
	31
	32	//#define __DEBUG_H__
	33
	34
[33c849e]	35	static string compiler_path( CFA_BACKEND_CC ); // C compiler path/name
[2c60af75]	36	static bool CFA_flag = false; // -CFA flag
[bbb1b35]	37	static bool save_temps = false; // -save-temps flag
[2c60af75]	38	static string o_file;
[417a630]	39	static string bprefix;
[0163d3e]	40	static string lang; // -x flag
[51b7345]	41
[bbb1b35]	42
[2c60af75]	43	static bool prefix( const string & arg, const string & pre ) {
[b87a5ed]	44	return arg.substr( 0, pre.size() ) == pre;
[51b7345]	45	} // prefix
	46
[2c60af75]	47	static void suffix( const string & arg, const char * args[], int & nargs ) {
	48	enum { NumSuffixes = 3 };
	49	static const string suffixes[NumSuffixes] = { "cfa", "hfa", "ifa" };
[dffaeac]	50
	51	size_t dot = arg.find_last_of( "." );
[b740f0b]	52	if ( dot == string::npos ) return;
[2c60af75]	53	const string * end = suffixes + NumSuffixes;
	54	if ( std::find( suffixes, end, arg.substr( dot + 1 ) ) != end ) {
	55	args[nargs++] = "-x";
	56	args[nargs++] = "c";
	57	} // if
[dffaeac]	58	} // suffix
	59
[51b7345]	60
[0bf5340]	61	static string __CFA_FLAGPREFIX__( "__CFA_FLAG" ); // "N__=" suffix
[51b7345]	62
[2c60af75]	63	static void checkEnv1( const char * args[], int & nargs ) { // stage 1
	64	extern char ** environ;
[51b7345]	65
[2c60af75]	66	for ( int i = 0; environ[i]; i += 1 ) {
[bbb1b35]	67	string arg( environ[i] );
[dffaeac]	68	#ifdef __DEBUG_H__
[2c60af75]	69	cerr << "env arg:\"" << arg << "\"" << endl;
[dffaeac]	70	#endif // __DEBUG_H__
[51b7345]	71
[2c60af75]	72	if ( prefix( arg, __CFA_FLAGPREFIX__ ) ) {
[0bf5340]	73	string val( arg.substr( arg.find_first_of( "=" ) + 1 ) );
[2c60af75]	74	if ( prefix( val, "-compiler=" ) ) {
	75	compiler_path = val.substr( 10 );
[0163d3e]	76	} else if ( prefix( val, "-x=" ) ) {
	77	lang = val.substr( 3 );
[2c60af75]	78	} // if
	79	} // if
	80	} // for
	81	} // checkEnv1
	82
	83
	84	static void checkEnv2( const char * args[], int & nargs ) { // stage 2
	85	extern char ** environ;
	86
	87	for ( int i = 0; environ[i]; i += 1 ) {
[bbb1b35]	88	string arg( environ[i] );
[dffaeac]	89	#ifdef __DEBUG_H__
[2c60af75]	90	cerr << "env arg:\"" << arg << "\"" << endl;
[dffaeac]	91	#endif // __DEBUG_H__
[2c60af75]	92
	93	if ( prefix( arg, __CFA_FLAGPREFIX__ ) ) {
[0bf5340]	94	string val( arg.substr( arg.find_first_of( "=" ) + 1 ) );
[2c60af75]	95	if ( prefix( val, "-compiler=" ) ) {
	96	compiler_path = val.substr( 10 );
[bbb1b35]	97	} else if ( val == "-CFA" ) {
[2c60af75]	98	CFA_flag = true;
[bbb1b35]	99	} else if ( val == "-save-temps" ) {
	100	save_temps = true;
[2c60af75]	101	} else if ( prefix( val, "-o=" ) ) { // output file for -CFA
	102	o_file = val.substr( 3 );
[417a630]	103	} else if ( prefix( val, "-B=" ) ) { // location of cfa-cpp
	104	bprefix = val.substr( 3 );
[0163d3e]	105	} else if ( prefix( val, "-x=" ) ) { // ignore
[33c849e]	106	} else { // normal flag for cfa-cpp
[0bf5340]	107	args[nargs++] = ( *new string( arg.substr( arg.find_first_of( "=" ) + 1 ) ) ).c_str();
[2c60af75]	108	} // if
	109	} // if
	110	} // for
	111	} // checkEnv2
[51b7345]	112
	113
[0bf5340]	114	static char tmpname[] = P_tmpdir "/CFAXXXXXX.ifa";
[2c60af75]	115	static int tmpfilefd = -1;
	116	static bool startrm = false;
	117
	118	static void rmtmpfile() {
[bbb1b35]	119	if ( tmpfilefd == -1 ) return; // RACE, file created ?
	120
[2c60af75]	121	startrm = true; // RACE with C-c C-c
[b87a5ed]	122	if ( unlink( tmpname ) == -1 ) { // remove tmpname
[2c60af75]	123	perror ( "CC1 Translator error: failed, unlink" );
[b87a5ed]	124	exit( EXIT_FAILURE );
	125	} // if
[2c60af75]	126	tmpfilefd = -1; // mark removed
[bdd516a]	127	} // rmtmpfile
	128
	129
[2c60af75]	130	static void sigTermHandler( int ) { // C-c C-c
	131	if ( startrm ) return; // return and let rmtmpfile finish, and then program finishes
	132
[b87a5ed]	133	if ( tmpfilefd != -1 ) { // RACE, file created ?
[2c60af75]	134	rmtmpfile(); // remove tmpname
[b87a5ed]	135	} // if
[2c60af75]	136	exit( EXIT_FAILURE ); // terminate
[bdd516a]	137	} // sigTermHandler
	138
	139
[2c60af75]	140	static void Stage1( const int argc, const char * const argv[] ) {
[b87a5ed]	141	int code;
	142	string arg;
[51b7345]	143
[bbb1b35]	144	const char * cpp_in = nullptr;
	145	const char * cpp_out = nullptr;
[51b7345]	146
[b87a5ed]	147	bool cpp_flag = false;
[2c60af75]	148	bool o_flag = false;
[51b7345]	149
[bbb1b35]	150	const char * args[argc + 100]; // leave space for 100 additional cpp command line values
[b87a5ed]	151	int nargs = 1; // number of arguments in args list; 0 => command name
[bdd516a]	152
[dffaeac]	153	#ifdef __DEBUG_H__
[7b937575]	154	cerr << "Stage1" << endl;
[dffaeac]	155	#endif // __DEBUG_H__
[2c60af75]	156	checkEnv1( args, nargs ); // arguments passed via environment variables
[bec4d24]	157	#ifdef __DEBUG_H__
	158	for ( int i = 1; i < argc; i += 1 ) {
	159	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
	160	} // for
	161	#endif // __DEBUG_H__
[7b937575]	162
[b87a5ed]	163	// process all the arguments
[51b7345]	164
[bec4d24]	165	for ( int i = 1; i < argc; i += 1 ) {
[b87a5ed]	166	arg = argv[i];
	167	if ( prefix( arg, "-" ) ) {
	168	// strip g++ flags that are inappropriate or cause duplicates in subsequent passes
	169
	170	if ( arg == "-quiet" ) {
	171	} else if ( arg == "-imultilib" \|\| arg == "-imultiarch" ) {
[db62eef]	172	i += 1; // and argument
[b87a5ed]	173	} else if ( prefix( arg, "-A" ) ) {
	174	} else if ( prefix( arg, "-D__GNU" ) ) {
	175	//********
	176	// GCC 5.6.0 SEPARATED THE -D FROM THE ARGUMENT!
	177	//********
	178	} else if ( arg == "-D" && prefix( argv[i + 1], "__GNU" ) ) {
[db62eef]	179	i += 1; // and argument
[b87a5ed]	180
	181	// strip flags controlling cpp step
	182
	183	} else if ( arg == "-D__CPP__" ) {
	184	cpp_flag = true;
	185	} else if ( arg == "-D" && string( argv[i + 1] ) == "__CPP__" ) {
[db62eef]	186	i += 1; // and argument
[b87a5ed]	187	cpp_flag = true;
	188
[2c60af75]	189	// all other flags
[b87a5ed]	190
	191	} else if ( arg == "-o" ) {
	192	i += 1;
[2c60af75]	193	o_flag = true;
	194	cpp_out = argv[i];
[b87a5ed]	195	} else {
[db62eef]	196	args[nargs++] = argv[i]; // pass flag along
[b87a5ed]	197	// CPP flags with an argument
[f8b6d921]	198	if ( arg == "-D" \|\| arg == "-U" \|\| arg == "-I" \|\| arg == "-MF" \|\| arg == "-MT" \|\| arg == "-MQ" \|\|
[b87a5ed]	199	arg == "-include" \|\| arg == "-imacros" \|\| arg == "-idirafter" \|\| arg == "-iprefix" \|\|
	200	arg == "-iwithprefix" \|\| arg == "-iwithprefixbefore" \|\| arg == "-isystem" \|\| arg == "-isysroot" ) {
	201	i += 1;
[db62eef]	202	args[nargs++] = argv[i]; // pass argument along
[dffaeac]	203	#ifdef __DEBUG_H__
[b87a5ed]	204	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
[dffaeac]	205	#endif // __DEBUG_H__
[b87a5ed]	206	} else if ( arg == "-MD" \|\| arg == "-MMD" ) {
[db62eef]	207	// gcc frontend generates the dependency file-name after the -MD/-MMD flag, but it is necessary to
	208	// prefix that file name with -MF.
[2c60af75]	209	args[nargs++] = "-MF"; // insert before file
[b87a5ed]	210	i += 1;
[db62eef]	211	args[nargs++] = argv[i]; // pass argument along
[dffaeac]	212	#ifdef __DEBUG_H__
[b87a5ed]	213	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
[dffaeac]	214	#endif // __DEBUG_H__
[b87a5ed]	215	} // if
	216	} // if
	217	} else { // obtain input and possibly output files
[bbb1b35]	218	if ( cpp_in == nullptr ) {
[b87a5ed]	219	cpp_in = argv[i];
[dffaeac]	220	#ifdef __DEBUG_H__
[b87a5ed]	221	cerr << "cpp_in:\"" << cpp_in << "\"" << endl;
[dffaeac]	222	#endif // __DEBUG_H__
[bbb1b35]	223	} else if ( cpp_out == nullptr ) {
[b87a5ed]	224	cpp_out = argv[i];
[dffaeac]	225	#ifdef __DEBUG_H__
[b87a5ed]	226	cerr << "cpp_out:\"" << cpp_out << "\""<< endl;
[dffaeac]	227	#endif // __DEBUG_H__
[b87a5ed]	228	} else {
	229	cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
	230	exit( EXIT_FAILURE );
	231	} // if
	232	} // if
	233	} // for
	234
[dffaeac]	235	#ifdef __DEBUG_H__
[b87a5ed]	236	cerr << "args:";
[bec4d24]	237	for ( int i = 1; i < nargs; i += 1 ) {
[b87a5ed]	238	cerr << " " << args[i];
	239	} // for
[bbb1b35]	240	if ( cpp_in != nullptr ) cerr << " " << cpp_in;
	241	if ( cpp_out != nullptr ) cerr << " " << cpp_out;
[b87a5ed]	242	cerr << endl;
[dffaeac]	243	#endif // __DEBUG_H__
[b87a5ed]	244
[bbb1b35]	245	if ( cpp_in == nullptr ) {
[51b7345]	246	cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
	247	exit( EXIT_FAILURE );
	248	} // if
[b87a5ed]	249
	250	if ( cpp_flag ) {
	251	// The -E flag is specified on the cfa command so only run the preprocessor and output is written to standard
	252	// output or -o. The call to cfa has a -E so it does not have to be added to the argument list.
	253
[2c60af75]	254	args[0] = compiler_path.c_str();
[0163d3e]	255	if ( lang.size() == 0 ) {
	256	suffix( cpp_in, args, nargs ); // check suffix
	257	} else {
	258	args[nargs++] = "-x";
	259	args[nargs++] = ( *new string( lang.c_str() ) ).c_str();
	260	} // if
[2c60af75]	261	args[nargs++] = cpp_in;
	262	if ( o_flag ) { // location for output
	263	args[nargs++] = "-o";
[b87a5ed]	264	} // if
[2c60af75]	265	args[nargs++] = cpp_out;
[bbb1b35]	266	args[nargs] = nullptr; // terminate argument list
[51b7345]	267
[dffaeac]	268	#ifdef __DEBUG_H__
[b87a5ed]	269	cerr << "nargs: " << nargs << endl;
[bbb1b35]	270	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[b87a5ed]	271	cerr << args[i] << " ";
	272	} // for
	273	cerr << endl;
[dffaeac]	274	#endif // __DEBUG_H__
[51b7345]	275
[bbb1b35]	276	execvp( args[0], (char * const *)args ); // should not return
[2c60af75]	277	perror( "CC1 Translator error: stage 1, execvp" );
[b87a5ed]	278	exit( EXIT_FAILURE );
[51b7345]	279	} // if
	280
[2c60af75]	281	// Run the C preprocessor and save the output in the given file.
[51b7345]	282
[db62eef]	283	if ( fork() == 0 ) { // child process ?
[b87a5ed]	284	// -o xxx.ii cannot be used to write the output file from cpp because no output file is created if cpp detects
	285	// an error (e.g., cannot find include file). Whereas, output is always generated, even when there is an error,
	286	// when cpp writes to stdout. Hence, stdout is redirected into the temporary file.
[bbb1b35]	287	if ( freopen( cpp_out, "w", stdout ) == nullptr ) { // redirect stdout to output file
[2c60af75]	288	perror( "CC1 Translator error: stage 1, freopen" );
[b87a5ed]	289	exit( EXIT_FAILURE );
	290	} // if
[51b7345]	291
[2c60af75]	292	args[0] = compiler_path.c_str();
[0163d3e]	293	if ( lang.size() == 0 ) {
	294	suffix( cpp_in, args, nargs ); // check suffix
	295	} else {
	296	args[nargs++] = "-x";
	297	args[nargs++] = ( *new string( lang.c_str() ) ).c_str();
	298	} // if
[2c60af75]	299	args[nargs++] = cpp_in; // input to cpp
[bbb1b35]	300	args[nargs] = nullptr; // terminate argument list
[51b7345]	301
[dffaeac]	302	#ifdef __DEBUG_H__
[b87a5ed]	303	cerr << "cpp nargs: " << nargs << endl;
[bbb1b35]	304	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[b87a5ed]	305	cerr << args[i] << " ";
	306	} // for
	307	cerr << endl;
[dffaeac]	308	#endif // __DEBUG_H__
[51b7345]	309
[bbb1b35]	310	execvp( args[0], (char * const *)args ); // should not return
[5a43ab8]	311	perror( "CC1 Translator error: stage 1 cpp, execvp" );
	312	cerr << " invoked " << args[0] << endl;
[b87a5ed]	313	exit( EXIT_FAILURE );
[51b7345]	314	} // if
	315
[b87a5ed]	316	wait( &code ); // wait for child to finish
[51b7345]	317
[dffaeac]	318	#ifdef __DEBUG_H__
[b87a5ed]	319	cerr << "return code from cpp:" << WEXITSTATUS(code) << endl;
[dffaeac]	320	#endif // __DEBUG_H__
[51b7345]	321
[b87a5ed]	322	if ( WIFSIGNALED(code) ) { // child failed ?
[2c60af75]	323	cerr << "CC1 Translator error: stage 1, child failed " << WTERMSIG(code) << endl;
[b87a5ed]	324	exit( EXIT_FAILURE );
	325	} // if
[51b7345]	326
[2c60af75]	327	exit( WEXITSTATUS(code) ); // bad cpp result stops top-level gcc
[51b7345]	328	} // Stage1
	329
	330
[2c60af75]	331	static void Stage2( const int argc, const char * const * argv ) {
	332	int code;
[b87a5ed]	333	string arg;
[51b7345]	334
[bbb1b35]	335	const char * cpp_in = nullptr;
	336	const char * cpp_out = nullptr;
[51b7345]	337
[bbb1b35]	338	const char * args[argc + 100]; // leave space for 100 additional cfa command line values
[b87a5ed]	339	int nargs = 1; // number of arguments in args list; 0 => command name
[bbb1b35]	340	const char * cargs[20]; // leave space for 20 additional cfa-cpp command line values
[2c60af75]	341	int ncargs = 1; // 0 => command name
[51b7345]	342
[dffaeac]	343	#ifdef __DEBUG_H__
[7b937575]	344	cerr << "Stage2" << endl;
[dffaeac]	345	#endif // __DEBUG_H__
[2c60af75]	346	checkEnv2( cargs, ncargs ); // arguments passed via environment variables
[bec4d24]	347	#ifdef __DEBUG_H__
	348	for ( int i = 1; i < argc; i += 1 ) {
	349	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
	350	} // for
	351	#endif // __DEBUG_H__
[7b937575]	352
[49d3128]	353	enum {
	354	Color_Auto = 0,
	355	Color_Always = 1,
	356	Color_Never = 2,
	357	} color_arg = Color_Auto;
	358
	359	const char * color_names[3] = { "--colors=auto", "--colors=always", "--colors=never" };
	360
[b87a5ed]	361	// process all the arguments
[51b7345]	362
[bec4d24]	363	for ( int i = 1; i < argc; i += 1 ) {
[b87a5ed]	364	arg = argv[i];
	365	if ( prefix( arg, "-" ) ) {
	366	// strip inappropriate flags
[51b7345]	367
[49d3128]	368	if ( prefix( arg, "-fdiagnostics-color=" ) ) {
	369	string choice = arg.substr(20);
	370	if(choice == "always") color_arg = Color_Always;
	371	else if(choice == "never" ) color_arg = Color_Never;
	372	else if(choice == "auto" ) color_arg = Color_Auto;
	373	} else if ( arg == "-fno-diagnostics-color" ) {
	374	color_arg = Color_Auto;
	375	}
	376
[b87a5ed]	377	if ( arg == "-quiet" \|\| arg == "-version" \|\| arg == "-fpreprocessed" \|\|
[dffaeac]	378	// Currently CFA does not suppose precompiled .h files.
	379	prefix( arg, "--output-pch" ) ) {
[51b7345]	380
[b87a5ed]	381	// strip inappropriate flags with an argument
[51b7345]	382
[b87a5ed]	383	} else if ( arg == "-auxbase" \|\| arg == "-auxbase-strip" \|\| arg == "-dumpbase" ) {
	384	i += 1;
[dffaeac]	385	#ifdef __DEBUG_H__
[b87a5ed]	386	cerr << "arg:\"" << argv[i] << "\"" << endl;
[dffaeac]	387	#endif // __DEBUG_H__
[51b7345]	388
[b87a5ed]	389	// all other flags
[51b7345]	390
[b87a5ed]	391	} else {
[db62eef]	392	args[nargs++] = argv[i]; // pass flag along
[b87a5ed]	393	if ( arg == "-o" ) {
	394	i += 1;
[2c60af75]	395	cpp_out = argv[i];
[db62eef]	396	args[nargs++] = argv[i]; // pass argument along
[68bceeb]	397	#ifdef __DEBUG_H__
[b87a5ed]	398	cerr << "arg:\"" << argv[i] << "\"" << endl;
[68bceeb]	399	#endif // __DEBUG_H__
[b87a5ed]	400	} // if
	401	} // if
	402	} else { // obtain input and possibly output files
[bbb1b35]	403	if ( cpp_in == nullptr ) {
[b87a5ed]	404	cpp_in = argv[i];
[dffaeac]	405	#ifdef __DEBUG_H__
[b87a5ed]	406	cerr << "cpp_in:\"" << cpp_in << "\"" << endl;
[dffaeac]	407	#endif // __DEBUG_H__
[bbb1b35]	408	} else if ( cpp_out == nullptr ) {
[2c60af75]	409	cpp_out = argv[i];
	410	#ifdef __DEBUG_H__
	411	cerr << "cpp_out:\"" << cpp_out << "\""<< endl;
	412	#endif // __DEBUG_H__
[b87a5ed]	413	} else {
[bbb1b35]	414	cerr << "Usage: " << argv[0] << " more than two files specified" << endl;
[b87a5ed]	415	exit( EXIT_FAILURE );
	416	} // if
	417	} // if
	418	} // for
[51b7345]	419
[bbb1b35]	420	if ( cpp_in == nullptr ) {
	421	cerr << "Usage: " << argv[0] << " missing input file" << endl;
	422	exit( EXIT_FAILURE );
	423	} // if
	424	if ( cpp_out == nullptr ) {
	425	cerr << "Usage: " << argv[0] << " missing output file" << endl;
	426	exit( EXIT_FAILURE );
	427	} // if
	428
[2c60af75]	429	// Create a temporary file, if needed, to store output of the cfa-cpp preprocessor. Cannot be created in forked
	430	// process because variables tmpname and tmpfilefd are cloned.
	431
[bbb1b35]	432	string cfa_cpp_out;
	433
	434	if ( ! CFA_flag ) { // run compiler ?
	435	if ( save_temps ) {
	436	cfa_cpp_out = cpp_in;
	437	size_t dot = cfa_cpp_out.find_last_of( "." );
	438	if ( dot == string::npos ) {
	439	cerr << "CC1 Translator error: stage 2, bad file name " << endl;
	440	exit( EXIT_FAILURE );
	441	} // if
[2c60af75]	442
[bbb1b35]	443	cfa_cpp_out = cfa_cpp_out.substr( 0, dot ) + ".ifa";
	444	if ( creat( cfa_cpp_out.c_str(), 0666 ) == -1 ) {
	445	perror( "CC1 Translator error: stage 2, creat" );
	446	exit( EXIT_FAILURE );
	447	} // if
	448	} else {
[0bf5340]	449	tmpfilefd = mkstemps( tmpname, 4 );
[bbb1b35]	450	if ( tmpfilefd == -1 ) {
	451	perror( "CC1 Translator error: stage 2, mkstemp" );
	452	exit( EXIT_FAILURE );
	453	} // if
	454	cfa_cpp_out = tmpname;
	455	} // if
[2c60af75]	456	#ifdef __DEBUG_H__
[bbb1b35]	457	cerr << "cfa_cpp_out: " << cfa_cpp_out << endl;
[2c60af75]	458	#endif // __DEBUG_H__
	459	} // if
	460
	461	// If -CFA flag specified, run the cfa-cpp preprocessor on the temporary file, and output is written to standard
	462	// output. Otherwise, run the cfa-cpp preprocessor on the temporary file and save the result into the output file.
	463
	464	if ( fork() == 0 ) { // child runs CFA
[7c8246d]	465	cargs[0] = ( *new string( bprefix + "cfa-cpp" ) ).c_str();
[2c60af75]	466	cargs[ncargs++] = cpp_in;
	467
	468	if ( CFA_flag ) { // run cfa-cpp ?
	469	if ( o_file.size() != 0 ) { // location for output
	470	cargs[ncargs++] = ( *new string( o_file.c_str() ) ).c_str();
	471	} // if
	472	} else {
[bbb1b35]	473	cargs[ncargs++] = cfa_cpp_out.c_str();
[2c60af75]	474	} // if
[49d3128]	475
	476	cargs[ncargs++] = color_names[color_arg];
	477
[5a43ab8]	478	cargs[ncargs] = nullptr; // terminate argument list
[2c60af75]	479
	480	#ifdef __DEBUG_H__
[bbb1b35]	481	for ( int i = 0; cargs[i] != nullptr; i += 1 ) {
[2c60af75]	482	cerr << cargs[i] << " ";
	483	} // for
	484	cerr << endl;
	485	#endif // __DEBUG_H__
	486
	487	execvp( cargs[0], (char * const *)cargs ); // should not return
[5a43ab8]	488	perror( "CC1 Translator error: stage 2 cfa-cpp, execvp" );
	489	cerr << " invoked " << cargs[0] << endl;
[2c60af75]	490	exit( EXIT_FAILURE );
	491	} // if
	492
	493	wait( &code ); // wait for child to finish
	494
	495	if ( WIFSIGNALED(code) ) { // child failed ?
	496	rmtmpfile(); // remove tmpname
	497	cerr << "CC1 Translator error: stage 2, child failed " << WTERMSIG(code) << endl;
	498	exit( EXIT_FAILURE );
	499	} // if
	500
	501	if ( CFA_flag ) { // no tmpfile created
	502	exit( WEXITSTATUS( code ) ); // stop regardless of success or failure
	503	} // if
	504
	505	#ifdef __DEBUG_H__
	506	cerr << "return code from cfa-cpp:" << WEXITSTATUS(code) << endl;
	507	#endif // __DEBUG_H__
	508
	509	if ( WEXITSTATUS(code) ) { // child error ?
	510	rmtmpfile(); // remove tmpname
	511	exit( WEXITSTATUS( code ) ); // do not continue
	512	} // if
	513
[dffaeac]	514	#ifdef __DEBUG_H__
[b87a5ed]	515	cerr << "args:";
[bec4d24]	516	for ( int i = 1; i < nargs; i += 1 ) {
[b87a5ed]	517	cerr << " " << args[i];
	518	} // for
[bbb1b35]	519	cerr << " " << cpp_in << endl;
[dffaeac]	520	#endif // __DEBUG_H__
[51b7345]	521
[2c60af75]	522	if ( fork() == 0 ) { // child runs CFA
	523	args[0] = compiler_path.c_str();
	524	args[nargs++] = "-S"; // only compile and put assembler output in specified file
[0bf5340]	525	args[nargs++] = "-x";
	526	args[nargs++] = "cpp-output";
	527
[bbb1b35]	528	args[nargs++] = cfa_cpp_out.c_str();
	529	args[nargs] = nullptr; // terminate argument list
[2c60af75]	530
	531	#ifdef __DEBUG_H__
	532	cerr << "stage2 nargs: " << nargs << endl;
[bbb1b35]	533	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[2c60af75]	534	cerr << args[i] << " ";
	535	} // for
	536	cerr << endl;
	537	#endif // __DEBUG_H__
	538
	539	execvp( args[0], (char * const *)args ); // should not return
[5a43ab8]	540	perror( "CC1 Translator error: stage 2 cc1, execvp" );
[c5c0148]	541	cerr << " invoked " << args[0] << endl;
[2c60af75]	542	exit( EXIT_FAILURE ); // tell gcc not to go any further
	543	} // if
	544
	545	wait( &code ); // wait for child to finish
[0bf5340]	546	rmtmpfile(); // remove tmpname
[2c60af75]	547
	548	if ( WIFSIGNALED(code) ) { // child failed ?
	549	cerr << "CC1 Translator error: stage 2, child failed " << WTERMSIG(code) << endl;
	550	exit( EXIT_FAILURE );
	551	} // if
[51b7345]	552
[dffaeac]	553	#ifdef __DEBUG_H__
[2c60af75]	554	cerr << "return code from gcc cc1:" << WEXITSTATUS(code) << endl;
[dffaeac]	555	#endif // __DEBUG_H__
[51b7345]	556
[2c60af75]	557	exit( WEXITSTATUS( code ) ); // stop regardless of success or failure
[51b7345]	558	} // Stage2
	559
	560
[2c60af75]	561	// This program is called twice because of the -no-integrated-cpp. The calls are differentiated by the first
	562	// command-line argument. The first call replaces the traditional cpp pass to preprocess the C program. The second call
	563	// is to the compiler, which is broken into two steps: preprocess again with cfa-cpp and then call gcc to compile the
	564	// doubly preprocessed program.
	565
[b3c36f4]	566	int main( const int argc, const char * const argv[], __attribute__((unused)) const char * const env[] ) {
[dffaeac]	567	#ifdef __DEBUG_H__
[bbb1b35]	568	for ( int i = 0; env[i] != nullptr; i += 1 ) {
[b87a5ed]	569	cerr << env[i] << endl;
	570	} // for
[dffaeac]	571	#endif // __DEBUG_H__
[51b7345]	572
[2c60af75]	573	signal( SIGINT, sigTermHandler );
	574	signal( SIGTERM, sigTermHandler );
	575
[bbb1b35]	576	string arg( argv[1] );
[51b7345]	577
[b87a5ed]	578	// Currently, stage 1 starts with flag -E and stage 2 with flag -fpreprocessed.
[51b7345]	579
[b87a5ed]	580	if ( arg == "-E" ) {
	581	Stage1( argc, argv );
	582	} else if ( arg == "-fpreprocessed" ) {
	583	Stage2( argc, argv );
	584	} else {
	585	cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
	586	exit( EXIT_FAILURE );
	587	} // if
[51b7345]	588	} // main
	589
	590	// Local Variables: //
[b87a5ed]	591	// tab-width: 4 //
	592	// mode: c++ //
[51b7345]	593	// compile-command: "make install" //
	594	// End: //

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