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source: driver/cc1.cc@ 9bdb8b7

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Last change on this file since 9bdb8b7 was c5c0148, checked in by Peter A. Buhr <pabuhr@…>, 6 years ago
change cargs to args in error message for CC1 Translator stage 2
Property mode set to `100644`
File size: 17.1 KB

Rev	Line
[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
[51b73452]	10	// Created On : Fri Aug 26 14:23:51 2005
	11	// Last Modified By : Peter A. Buhr
[c5c0148]	12	// Last Modified On : Sun Oct 20 08:14:33 2019
	13	// Update Count : 385
[51b73452]	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
[51b73452]	28
[b87a5ed]	29	#include "config.h" // configure info
[51b73452]	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;
[51b73452]	40
[bbb1b35]	41
[2c60af75]	42	static bool prefix( const string & arg, const string & pre ) {
[b87a5ed]	43	return arg.substr( 0, pre.size() ) == pre;
[51b73452]	44	} // prefix
	45
[2c60af75]	46	static void suffix( const string & arg, const char * args[], int & nargs ) {
	47	enum { NumSuffixes = 3 };
	48	static const string suffixes[NumSuffixes] = { "cfa", "hfa", "ifa" };
[dffaeac]	49
	50	size_t dot = arg.find_last_of( "." );
[b740f0b]	51	if ( dot == string::npos ) return;
[2c60af75]	52	const string * end = suffixes + NumSuffixes;
	53	if ( std::find( suffixes, end, arg.substr( dot + 1 ) ) != end ) {
	54	args[nargs++] = "-x";
	55	args[nargs++] = "c";
	56	} // if
[dffaeac]	57	} // suffix
	58
[51b73452]	59
[0bf5340]	60	static string __CFA_FLAGPREFIX__( "__CFA_FLAG" ); // "N__=" suffix
[51b73452]	61
[2c60af75]	62	static void checkEnv1( const char * args[], int & nargs ) { // stage 1
	63	extern char ** environ;
[51b73452]	64
[2c60af75]	65	for ( int i = 0; environ[i]; i += 1 ) {
[bbb1b35]	66	string arg( environ[i] );
[dffaeac]	67	#ifdef __DEBUG_H__
[2c60af75]	68	cerr << "env arg:\"" << arg << "\"" << endl;
[dffaeac]	69	#endif // __DEBUG_H__
[51b73452]	70
[2c60af75]	71	if ( prefix( arg, __CFA_FLAGPREFIX__ ) ) {
[0bf5340]	72	string val( arg.substr( arg.find_first_of( "=" ) + 1 ) );
[2c60af75]	73	if ( prefix( val, "-compiler=" ) ) {
	74	compiler_path = val.substr( 10 );
	75	} // if
	76	} // if
	77	} // for
	78	} // checkEnv1
	79
	80
	81	static void checkEnv2( const char * args[], int & nargs ) { // stage 2
	82	extern char ** environ;
	83
	84	for ( int i = 0; environ[i]; i += 1 ) {
[bbb1b35]	85	string arg( environ[i] );
[dffaeac]	86	#ifdef __DEBUG_H__
[2c60af75]	87	cerr << "env arg:\"" << arg << "\"" << endl;
[dffaeac]	88	#endif // __DEBUG_H__
[2c60af75]	89
	90	if ( prefix( arg, __CFA_FLAGPREFIX__ ) ) {
[0bf5340]	91	string val( arg.substr( arg.find_first_of( "=" ) + 1 ) );
[2c60af75]	92	if ( prefix( val, "-compiler=" ) ) {
	93	compiler_path = val.substr( 10 );
[bbb1b35]	94	} else if ( val == "-CFA" ) {
[2c60af75]	95	CFA_flag = true;
[bbb1b35]	96	} else if ( val == "-save-temps" ) {
	97	save_temps = true;
[2c60af75]	98	} else if ( prefix( val, "-o=" ) ) { // output file for -CFA
	99	o_file = val.substr( 3 );
[417a630]	100	} else if ( prefix( val, "-B=" ) ) { // location of cfa-cpp
	101	bprefix = val.substr( 3 );
[33c849e]	102	} else { // normal flag for cfa-cpp
[0bf5340]	103	args[nargs++] = ( *new string( arg.substr( arg.find_first_of( "=" ) + 1 ) ) ).c_str();
[2c60af75]	104	} // if
	105	} // if
	106	} // for
	107	} // checkEnv2
[51b73452]	108
	109
[0bf5340]	110	static char tmpname[] = P_tmpdir "/CFAXXXXXX.ifa";
[2c60af75]	111	static int tmpfilefd = -1;
	112	static bool startrm = false;
	113
	114	static void rmtmpfile() {
[bbb1b35]	115	if ( tmpfilefd == -1 ) return; // RACE, file created ?
	116
[2c60af75]	117	startrm = true; // RACE with C-c C-c
[b87a5ed]	118	if ( unlink( tmpname ) == -1 ) { // remove tmpname
[2c60af75]	119	perror ( "CC1 Translator error: failed, unlink" );
[b87a5ed]	120	exit( EXIT_FAILURE );
	121	} // if
[2c60af75]	122	tmpfilefd = -1; // mark removed
[bdd516a]	123	} // rmtmpfile
	124
	125
[2c60af75]	126	static void sigTermHandler( int ) { // C-c C-c
	127	if ( startrm ) return; // return and let rmtmpfile finish, and then program finishes
	128
[b87a5ed]	129	if ( tmpfilefd != -1 ) { // RACE, file created ?
[2c60af75]	130	rmtmpfile(); // remove tmpname
[b87a5ed]	131	} // if
[2c60af75]	132	exit( EXIT_FAILURE ); // terminate
[bdd516a]	133	} // sigTermHandler
	134
	135
[2c60af75]	136	static void Stage1( const int argc, const char * const argv[] ) {
[b87a5ed]	137	int code;
	138	string arg;
[51b73452]	139
[bbb1b35]	140	const char * cpp_in = nullptr;
	141	const char * cpp_out = nullptr;
[51b73452]	142
[b87a5ed]	143	bool cpp_flag = false;
[2c60af75]	144	bool o_flag = false;
[51b73452]	145
[bbb1b35]	146	const char * args[argc + 100]; // leave space for 100 additional cpp command line values
[b87a5ed]	147	int nargs = 1; // number of arguments in args list; 0 => command name
[bdd516a]	148
[dffaeac]	149	#ifdef __DEBUG_H__
[7b937575]	150	cerr << "Stage1" << endl;
[dffaeac]	151	#endif // __DEBUG_H__
[2c60af75]	152	checkEnv1( args, nargs ); // arguments passed via environment variables
[bec4d24]	153	#ifdef __DEBUG_H__
	154	for ( int i = 1; i < argc; i += 1 ) {
	155	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
	156	} // for
	157	#endif // __DEBUG_H__
[7b937575]	158
[b87a5ed]	159	// process all the arguments
[51b73452]	160
[bec4d24]	161	for ( int i = 1; i < argc; i += 1 ) {
[b87a5ed]	162	arg = argv[i];
	163	if ( prefix( arg, "-" ) ) {
	164	// strip g++ flags that are inappropriate or cause duplicates in subsequent passes
	165
	166	if ( arg == "-quiet" ) {
	167	} else if ( arg == "-imultilib" \|\| arg == "-imultiarch" ) {
	168	i += 1; // and the argument
	169	} else if ( prefix( arg, "-A" ) ) {
	170	} else if ( prefix( arg, "-D__GNU" ) ) {
	171	//********
	172	// GCC 5.6.0 SEPARATED THE -D FROM THE ARGUMENT!
	173	//********
	174	} else if ( arg == "-D" && prefix( argv[i + 1], "__GNU" ) ) {
	175	i += 1; // and the argument
	176
	177	// strip flags controlling cpp step
	178
	179	} else if ( arg == "-D__CPP__" ) {
	180	cpp_flag = true;
	181	} else if ( arg == "-D" && string( argv[i + 1] ) == "__CPP__" ) {
	182	i += 1; // and the argument
	183	cpp_flag = true;
	184
[2c60af75]	185	// all other flags
[b87a5ed]	186
	187	} else if ( arg == "-o" ) {
	188	i += 1;
[2c60af75]	189	o_flag = true;
	190	cpp_out = argv[i];
[b87a5ed]	191	} else {
[2c60af75]	192	args[nargs++] = argv[i]; // pass the flag along
[b87a5ed]	193	// CPP flags with an argument
[f8b6d921]	194	if ( arg == "-D" \|\| arg == "-U" \|\| arg == "-I" \|\| arg == "-MF" \|\| arg == "-MT" \|\| arg == "-MQ" \|\|
[b87a5ed]	195	arg == "-include" \|\| arg == "-imacros" \|\| arg == "-idirafter" \|\| arg == "-iprefix" \|\|
	196	arg == "-iwithprefix" \|\| arg == "-iwithprefixbefore" \|\| arg == "-isystem" \|\| arg == "-isysroot" ) {
	197	i += 1;
[2c60af75]	198	args[nargs++] = argv[i]; // pass the argument along
[dffaeac]	199	#ifdef __DEBUG_H__
[b87a5ed]	200	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
[dffaeac]	201	#endif // __DEBUG_H__
[b87a5ed]	202	} else if ( arg == "-MD" \|\| arg == "-MMD" ) {
[2c60af75]	203	args[nargs++] = "-MF"; // insert before file
[b87a5ed]	204	i += 1;
[2c60af75]	205	args[nargs++] = argv[i]; // pass the argument along
[dffaeac]	206	#ifdef __DEBUG_H__
[b87a5ed]	207	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
[dffaeac]	208	#endif // __DEBUG_H__
[b87a5ed]	209	} // if
	210	} // if
	211	} else { // obtain input and possibly output files
[bbb1b35]	212	if ( cpp_in == nullptr ) {
[b87a5ed]	213	cpp_in = argv[i];
[dffaeac]	214	#ifdef __DEBUG_H__
[b87a5ed]	215	cerr << "cpp_in:\"" << cpp_in << "\"" << endl;
[dffaeac]	216	#endif // __DEBUG_H__
[bbb1b35]	217	} else if ( cpp_out == nullptr ) {
[b87a5ed]	218	cpp_out = argv[i];
[dffaeac]	219	#ifdef __DEBUG_H__
[b87a5ed]	220	cerr << "cpp_out:\"" << cpp_out << "\""<< endl;
[dffaeac]	221	#endif // __DEBUG_H__
[b87a5ed]	222	} else {
	223	cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
	224	exit( EXIT_FAILURE );
	225	} // if
	226	} // if
	227	} // for
	228
[dffaeac]	229	#ifdef __DEBUG_H__
[b87a5ed]	230	cerr << "args:";
[bec4d24]	231	for ( int i = 1; i < nargs; i += 1 ) {
[b87a5ed]	232	cerr << " " << args[i];
	233	} // for
[bbb1b35]	234	if ( cpp_in != nullptr ) cerr << " " << cpp_in;
	235	if ( cpp_out != nullptr ) cerr << " " << cpp_out;
[b87a5ed]	236	cerr << endl;
[dffaeac]	237	#endif // __DEBUG_H__
[b87a5ed]	238
[bbb1b35]	239	if ( cpp_in == nullptr ) {
[51b73452]	240	cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
	241	exit( EXIT_FAILURE );
	242	} // if
[b87a5ed]	243
	244	if ( cpp_flag ) {
	245	// The -E flag is specified on the cfa command so only run the preprocessor and output is written to standard
	246	// output or -o. The call to cfa has a -E so it does not have to be added to the argument list.
	247
[2c60af75]	248	args[0] = compiler_path.c_str();
[b740f0b]	249	suffix( cpp_in, args, nargs ); // check suffix
[2c60af75]	250	args[nargs++] = cpp_in;
	251	if ( o_flag ) { // location for output
	252	args[nargs++] = "-o";
[b87a5ed]	253	} // if
[2c60af75]	254	args[nargs++] = cpp_out;
[bbb1b35]	255	args[nargs] = nullptr; // terminate argument list
[51b73452]	256
[dffaeac]	257	#ifdef __DEBUG_H__
[b87a5ed]	258	cerr << "nargs: " << nargs << endl;
[bbb1b35]	259	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[b87a5ed]	260	cerr << args[i] << " ";
	261	} // for
	262	cerr << endl;
[dffaeac]	263	#endif // __DEBUG_H__
[51b73452]	264
[bbb1b35]	265	execvp( args[0], (char * const *)args ); // should not return
[2c60af75]	266	perror( "CC1 Translator error: stage 1, execvp" );
[b87a5ed]	267	exit( EXIT_FAILURE );
[51b73452]	268	} // if
	269
[2c60af75]	270	// Run the C preprocessor and save the output in the given file.
[51b73452]	271
[b87a5ed]	272	if ( fork() == 0 ) { // child process ?
	273	// -o xxx.ii cannot be used to write the output file from cpp because no output file is created if cpp detects
	274	// an error (e.g., cannot find include file). Whereas, output is always generated, even when there is an error,
	275	// when cpp writes to stdout. Hence, stdout is redirected into the temporary file.
[bbb1b35]	276	if ( freopen( cpp_out, "w", stdout ) == nullptr ) { // redirect stdout to output file
[2c60af75]	277	perror( "CC1 Translator error: stage 1, freopen" );
[b87a5ed]	278	exit( EXIT_FAILURE );
	279	} // if
[51b73452]	280
[2c60af75]	281	args[0] = compiler_path.c_str();
[b740f0b]	282	suffix( cpp_in, args, nargs ); // check suffix
[2c60af75]	283	args[nargs++] = cpp_in; // input to cpp
[bbb1b35]	284	args[nargs] = nullptr; // terminate argument list
[51b73452]	285
[dffaeac]	286	#ifdef __DEBUG_H__
[b87a5ed]	287	cerr << "cpp nargs: " << nargs << endl;
[bbb1b35]	288	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[b87a5ed]	289	cerr << args[i] << " ";
	290	} // for
	291	cerr << endl;
[dffaeac]	292	#endif // __DEBUG_H__
[51b73452]	293
[bbb1b35]	294	execvp( args[0], (char * const *)args ); // should not return
[5a43ab8]	295	perror( "CC1 Translator error: stage 1 cpp, execvp" );
	296	cerr << " invoked " << args[0] << endl;
[b87a5ed]	297	exit( EXIT_FAILURE );
[51b73452]	298	} // if
	299
[b87a5ed]	300	wait( &code ); // wait for child to finish
[51b73452]	301
[dffaeac]	302	#ifdef __DEBUG_H__
[b87a5ed]	303	cerr << "return code from cpp:" << WEXITSTATUS(code) << endl;
[dffaeac]	304	#endif // __DEBUG_H__
[51b73452]	305
[b87a5ed]	306	if ( WIFSIGNALED(code) ) { // child failed ?
[2c60af75]	307	cerr << "CC1 Translator error: stage 1, child failed " << WTERMSIG(code) << endl;
[b87a5ed]	308	exit( EXIT_FAILURE );
	309	} // if
[51b73452]	310
[2c60af75]	311	exit( WEXITSTATUS(code) ); // bad cpp result stops top-level gcc
[51b73452]	312	} // Stage1
	313
	314
[2c60af75]	315	static void Stage2( const int argc, const char * const * argv ) {
	316	int code;
[b87a5ed]	317	string arg;
[51b73452]	318
[bbb1b35]	319	const char * cpp_in = nullptr;
	320	const char * cpp_out = nullptr;
[51b73452]	321
[bbb1b35]	322	const char * args[argc + 100]; // leave space for 100 additional cfa command line values
[b87a5ed]	323	int nargs = 1; // number of arguments in args list; 0 => command name
[bbb1b35]	324	const char * cargs[20]; // leave space for 20 additional cfa-cpp command line values
[2c60af75]	325	int ncargs = 1; // 0 => command name
[51b73452]	326
[dffaeac]	327	#ifdef __DEBUG_H__
[7b937575]	328	cerr << "Stage2" << endl;
[dffaeac]	329	#endif // __DEBUG_H__
[2c60af75]	330	checkEnv2( cargs, ncargs ); // arguments passed via environment variables
[bec4d24]	331	#ifdef __DEBUG_H__
	332	for ( int i = 1; i < argc; i += 1 ) {
	333	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
	334	} // for
	335	#endif // __DEBUG_H__
[7b937575]	336
[b87a5ed]	337	// process all the arguments
[51b73452]	338
[bec4d24]	339	for ( int i = 1; i < argc; i += 1 ) {
[b87a5ed]	340	arg = argv[i];
	341	if ( prefix( arg, "-" ) ) {
	342	// strip inappropriate flags
[51b73452]	343
[b87a5ed]	344	if ( arg == "-quiet" \|\| arg == "-version" \|\| arg == "-fpreprocessed" \|\|
[dffaeac]	345	// Currently CFA does not suppose precompiled .h files.
	346	prefix( arg, "--output-pch" ) ) {
[51b73452]	347
[b87a5ed]	348	// strip inappropriate flags with an argument
[51b73452]	349
[b87a5ed]	350	} else if ( arg == "-auxbase" \|\| arg == "-auxbase-strip" \|\| arg == "-dumpbase" ) {
	351	i += 1;
[dffaeac]	352	#ifdef __DEBUG_H__
[b87a5ed]	353	cerr << "arg:\"" << argv[i] << "\"" << endl;
[dffaeac]	354	#endif // __DEBUG_H__
[51b73452]	355
[b87a5ed]	356	// all other flags
[51b73452]	357
[b87a5ed]	358	} else {
[2c60af75]	359	args[nargs++] = argv[i]; // pass the flag along
[b87a5ed]	360	if ( arg == "-o" ) {
	361	i += 1;
[2c60af75]	362	cpp_out = argv[i];
	363	args[nargs++] = argv[i]; // pass the argument along
[68bceeb]	364	#ifdef __DEBUG_H__
[b87a5ed]	365	cerr << "arg:\"" << argv[i] << "\"" << endl;
[68bceeb]	366	#endif // __DEBUG_H__
[b87a5ed]	367	} // if
	368	} // if
	369	} else { // obtain input and possibly output files
[bbb1b35]	370	if ( cpp_in == nullptr ) {
[b87a5ed]	371	cpp_in = argv[i];
[dffaeac]	372	#ifdef __DEBUG_H__
[b87a5ed]	373	cerr << "cpp_in:\"" << cpp_in << "\"" << endl;
[dffaeac]	374	#endif // __DEBUG_H__
[bbb1b35]	375	} else if ( cpp_out == nullptr ) {
[2c60af75]	376	cpp_out = argv[i];
	377	#ifdef __DEBUG_H__
	378	cerr << "cpp_out:\"" << cpp_out << "\""<< endl;
	379	#endif // __DEBUG_H__
[b87a5ed]	380	} else {
[bbb1b35]	381	cerr << "Usage: " << argv[0] << " more than two files specified" << endl;
[b87a5ed]	382	exit( EXIT_FAILURE );
	383	} // if
	384	} // if
	385	} // for
[51b73452]	386
[bbb1b35]	387	if ( cpp_in == nullptr ) {
	388	cerr << "Usage: " << argv[0] << " missing input file" << endl;
	389	exit( EXIT_FAILURE );
	390	} // if
	391	if ( cpp_out == nullptr ) {
	392	cerr << "Usage: " << argv[0] << " missing output file" << endl;
	393	exit( EXIT_FAILURE );
	394	} // if
	395
[2c60af75]	396	// Create a temporary file, if needed, to store output of the cfa-cpp preprocessor. Cannot be created in forked
	397	// process because variables tmpname and tmpfilefd are cloned.
	398
[bbb1b35]	399	string cfa_cpp_out;
	400
	401	if ( ! CFA_flag ) { // run compiler ?
	402	if ( save_temps ) {
	403	cfa_cpp_out = cpp_in;
	404	size_t dot = cfa_cpp_out.find_last_of( "." );
	405	if ( dot == string::npos ) {
	406	cerr << "CC1 Translator error: stage 2, bad file name " << endl;
	407	exit( EXIT_FAILURE );
	408	} // if
[2c60af75]	409
[bbb1b35]	410	cfa_cpp_out = cfa_cpp_out.substr( 0, dot ) + ".ifa";
	411	if ( creat( cfa_cpp_out.c_str(), 0666 ) == -1 ) {
	412	perror( "CC1 Translator error: stage 2, creat" );
	413	exit( EXIT_FAILURE );
	414	} // if
	415	} else {
[0bf5340]	416	tmpfilefd = mkstemps( tmpname, 4 );
[bbb1b35]	417	if ( tmpfilefd == -1 ) {
	418	perror( "CC1 Translator error: stage 2, mkstemp" );
	419	exit( EXIT_FAILURE );
	420	} // if
	421	cfa_cpp_out = tmpname;
	422	} // if
[2c60af75]	423	#ifdef __DEBUG_H__
[bbb1b35]	424	cerr << "cfa_cpp_out: " << cfa_cpp_out << endl;
[2c60af75]	425	#endif // __DEBUG_H__
	426	} // if
	427
	428	// If -CFA flag specified, run the cfa-cpp preprocessor on the temporary file, and output is written to standard
	429	// output. Otherwise, run the cfa-cpp preprocessor on the temporary file and save the result into the output file.
	430
	431	if ( fork() == 0 ) { // child runs CFA
[7c8246d]	432	cargs[0] = ( *new string( bprefix + "cfa-cpp" ) ).c_str();
[2c60af75]	433	cargs[ncargs++] = cpp_in;
	434
	435	if ( CFA_flag ) { // run cfa-cpp ?
	436	if ( o_file.size() != 0 ) { // location for output
	437	cargs[ncargs++] = ( *new string( o_file.c_str() ) ).c_str();
	438	} // if
	439	} else {
[bbb1b35]	440	cargs[ncargs++] = cfa_cpp_out.c_str();
[2c60af75]	441	} // if
[5a43ab8]	442	cargs[ncargs] = nullptr; // terminate argument list
[2c60af75]	443
	444	#ifdef __DEBUG_H__
[bbb1b35]	445	for ( int i = 0; cargs[i] != nullptr; i += 1 ) {
[2c60af75]	446	cerr << cargs[i] << " ";
	447	} // for
	448	cerr << endl;
	449	#endif // __DEBUG_H__
	450
	451	execvp( cargs[0], (char * const *)cargs ); // should not return
[5a43ab8]	452	perror( "CC1 Translator error: stage 2 cfa-cpp, execvp" );
	453	cerr << " invoked " << cargs[0] << endl;
[2c60af75]	454	exit( EXIT_FAILURE );
	455	} // if
	456
	457	wait( &code ); // wait for child to finish
	458
	459	if ( WIFSIGNALED(code) ) { // child failed ?
	460	rmtmpfile(); // remove tmpname
	461	cerr << "CC1 Translator error: stage 2, child failed " << WTERMSIG(code) << endl;
	462	exit( EXIT_FAILURE );
	463	} // if
	464
	465	if ( CFA_flag ) { // no tmpfile created
	466	exit( WEXITSTATUS( code ) ); // stop regardless of success or failure
	467	} // if
	468
	469	#ifdef __DEBUG_H__
	470	cerr << "return code from cfa-cpp:" << WEXITSTATUS(code) << endl;
	471	#endif // __DEBUG_H__
	472
	473	if ( WEXITSTATUS(code) ) { // child error ?
	474	rmtmpfile(); // remove tmpname
	475	exit( WEXITSTATUS( code ) ); // do not continue
	476	} // if
	477
[dffaeac]	478	#ifdef __DEBUG_H__
[b87a5ed]	479	cerr << "args:";
[bec4d24]	480	for ( int i = 1; i < nargs; i += 1 ) {
[b87a5ed]	481	cerr << " " << args[i];
	482	} // for
[bbb1b35]	483	cerr << " " << cpp_in << endl;
[dffaeac]	484	#endif // __DEBUG_H__
[51b73452]	485
[2c60af75]	486	if ( fork() == 0 ) { // child runs CFA
	487	args[0] = compiler_path.c_str();
	488	args[nargs++] = "-S"; // only compile and put assembler output in specified file
[0bf5340]	489	args[nargs++] = "-x";
	490	args[nargs++] = "cpp-output";
	491
[bbb1b35]	492	args[nargs++] = cfa_cpp_out.c_str();
	493	args[nargs] = nullptr; // terminate argument list
[2c60af75]	494
	495	#ifdef __DEBUG_H__
	496	cerr << "stage2 nargs: " << nargs << endl;
[bbb1b35]	497	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[2c60af75]	498	cerr << args[i] << " ";
	499	} // for
	500	cerr << endl;
	501	#endif // __DEBUG_H__
	502
	503	execvp( args[0], (char * const *)args ); // should not return
[5a43ab8]	504	perror( "CC1 Translator error: stage 2 cc1, execvp" );
[c5c0148]	505	cerr << " invoked " << args[0] << endl;
[2c60af75]	506	exit( EXIT_FAILURE ); // tell gcc not to go any further
	507	} // if
	508
	509	wait( &code ); // wait for child to finish
[0bf5340]	510	rmtmpfile(); // remove tmpname
[2c60af75]	511
	512	if ( WIFSIGNALED(code) ) { // child failed ?
	513	cerr << "CC1 Translator error: stage 2, child failed " << WTERMSIG(code) << endl;
	514	exit( EXIT_FAILURE );
	515	} // if
[51b73452]	516
[dffaeac]	517	#ifdef __DEBUG_H__
[2c60af75]	518	cerr << "return code from gcc cc1:" << WEXITSTATUS(code) << endl;
[dffaeac]	519	#endif // __DEBUG_H__
[51b73452]	520
[2c60af75]	521	exit( WEXITSTATUS( code ) ); // stop regardless of success or failure
[51b73452]	522	} // Stage2
	523
	524
[2c60af75]	525	// This program is called twice because of the -no-integrated-cpp. The calls are differentiated by the first
	526	// command-line argument. The first call replaces the traditional cpp pass to preprocess the C program. The second call
	527	// is to the compiler, which is broken into two steps: preprocess again with cfa-cpp and then call gcc to compile the
	528	// doubly preprocessed program.
	529
[b3c36f4]	530	int main( const int argc, const char * const argv[], __attribute__((unused)) const char * const env[] ) {
[dffaeac]	531	#ifdef __DEBUG_H__
[bbb1b35]	532	for ( int i = 0; env[i] != nullptr; i += 1 ) {
[b87a5ed]	533	cerr << env[i] << endl;
	534	} // for
[dffaeac]	535	#endif // __DEBUG_H__
[51b73452]	536
[2c60af75]	537	signal( SIGINT, sigTermHandler );
	538	signal( SIGTERM, sigTermHandler );
	539
[bbb1b35]	540	string arg( argv[1] );
[51b73452]	541
[b87a5ed]	542	// Currently, stage 1 starts with flag -E and stage 2 with flag -fpreprocessed.
[51b73452]	543
[b87a5ed]	544	if ( arg == "-E" ) {
	545	Stage1( argc, argv );
	546	} else if ( arg == "-fpreprocessed" ) {
	547	Stage2( argc, argv );
	548	} else {
	549	cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
	550	exit( EXIT_FAILURE );
	551	} // if
[51b73452]	552	} // main
	553
	554	// Local Variables: //
[b87a5ed]	555	// tab-width: 4 //
	556	// mode: c++ //
[51b73452]	557	// compile-command: "make install" //
	558	// End: //

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