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source: driver/cc1.cc @ d69f7114

Last change on this file since d69f7114 was 7350330f, checked in by Peter A. Buhr <pabuhr@…>, 9 months ago
formatting, remove unnecessary use of c_str(), add better debug printing for cc1
Property mode set to `100644`
File size: 18.7 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
[51b7345]	10	// Created On : Fri Aug 26 14:23:51 2005
	11	// Last Modified By : Peter A. Buhr
[7350330f]	12	// Last Modified On : Mon Sep 25 11:07:22 2023
	13	// Update Count : 427
[51b7345]	14	//
	15
	16	#include <iostream>
	17	#include <string>
[2c60af75]	18	#include <algorithm> // find
[b87a5ed]	19	#include <cstdio> // stderr, stdout, perror, fprintf
	20	#include <cstdlib> // getenv, exit, mkstemp
[7350330f]	21	using namespace std;
[b87a5ed]	22	#include <unistd.h> // execvp, fork, unlink
	23	#include <sys/wait.h> // wait
[36de20d]	24	#include <fcntl.h> // creat
[bbb1b35]	25
[51b7345]	26
[b87a5ed]	27	#include "config.h" // configure info
[51b7345]	28
	29
	30	//#define __DEBUG_H__
	31
	32
[33c849e]	33	static string compiler_path( CFA_BACKEND_CC ); // C compiler path/name
[2c60af75]	34	static bool CFA_flag = false; // -CFA flag
[bbb1b35]	35	static bool save_temps = false; // -save-temps flag
[2c60af75]	36	static string o_file;
[417a630]	37	static string bprefix;
[0163d3e]	38	static string lang; // -x flag
[51b7345]	39
[bbb1b35]	40
[2c60af75]	41	static bool prefix( const string & arg, const string & pre ) {
[b87a5ed]	42	return arg.substr( 0, pre.size() ) == pre;
[51b7345]	43	} // prefix
	44
[2c60af75]	45	static void suffix( const string & arg, const char * args[], int & nargs ) {
	46	enum { NumSuffixes = 3 };
	47	static const string suffixes[NumSuffixes] = { "cfa", "hfa", "ifa" };
[dffaeac]	48
	49	size_t dot = arg.find_last_of( "." );
[b740f0b]	50	if ( dot == string::npos ) return;
[2c60af75]	51	const string * end = suffixes + NumSuffixes;
[7350330f]	52	if ( find( suffixes, end, arg.substr( dot + 1 ) ) != end ) {
[2c60af75]	53	args[nargs++] = "-x";
	54	args[nargs++] = "c";
	55	} // if
[dffaeac]	56	} // suffix
	57
[51b7345]	58
[36de20d]	59	static string __CFA_FLAGPREFIX__( "__CFA_FLAG" ); // "__CFA_FLAG__=" suffix
[51b7345]	60
[d43a1fe]	61	static void checkEnv1() { // stage 1
[2c60af75]	62	extern char ** environ;
[51b7345]	63
[2c60af75]	64	for ( int i = 0; environ[i]; i += 1 ) {
[bbb1b35]	65	string arg( environ[i] );
[dffaeac]	66	#ifdef __DEBUG_H__
[2c60af75]	67	cerr << "env arg:\"" << arg << "\"" << endl;
[dffaeac]	68	#endif // __DEBUG_H__
[51b7345]	69
[2c60af75]	70	if ( prefix( arg, __CFA_FLAGPREFIX__ ) ) {
[0bf5340]	71	string val( arg.substr( arg.find_first_of( "=" ) + 1 ) );
[2c60af75]	72	if ( prefix( val, "-compiler=" ) ) {
	73	compiler_path = val.substr( 10 );
[0163d3e]	74	} else if ( prefix( val, "-x=" ) ) {
	75	lang = val.substr( 3 );
[2c60af75]	76	} // if
	77	} // if
	78	} // for
	79	} // checkEnv1
	80
	81
	82	static void checkEnv2( const char * args[], int & nargs ) { // stage 2
	83	extern char ** environ;
	84
	85	for ( int i = 0; environ[i]; i += 1 ) {
[bbb1b35]	86	string arg( environ[i] );
[dffaeac]	87	#ifdef __DEBUG_H__
[2c60af75]	88	cerr << "env arg:\"" << arg << "\"" << endl;
[dffaeac]	89	#endif // __DEBUG_H__
[2c60af75]	90
	91	if ( prefix( arg, __CFA_FLAGPREFIX__ ) ) {
[0bf5340]	92	string val( arg.substr( arg.find_first_of( "=" ) + 1 ) );
[2c60af75]	93	if ( prefix( val, "-compiler=" ) ) {
	94	compiler_path = val.substr( 10 );
[bbb1b35]	95	} else if ( val == "-CFA" ) {
[2c60af75]	96	CFA_flag = true;
[b4130f9]	97	} else if ( val == "-save-temps" \|\| val == "--save-temps" ) {
[bbb1b35]	98	save_temps = true;
[2c60af75]	99	} else if ( prefix( val, "-o=" ) ) { // output file for -CFA
	100	o_file = val.substr( 3 );
[417a630]	101	} else if ( prefix( val, "-B=" ) ) { // location of cfa-cpp
	102	bprefix = val.substr( 3 );
[0163d3e]	103	} else if ( prefix( val, "-x=" ) ) { // ignore
[33c849e]	104	} else { // normal flag for cfa-cpp
[0bf5340]	105	args[nargs++] = ( *new string( arg.substr( arg.find_first_of( "=" ) + 1 ) ) ).c_str();
[2c60af75]	106	} // if
	107	} // if
	108	} // for
	109	} // checkEnv2
[51b7345]	110
[36de20d]	111	#define CFA_SUFFIX ".ifa"
[51b7345]	112
[36de20d]	113	static char tmpname[] = P_tmpdir "/CFAXXXXXX" CFA_SUFFIX;
[2c60af75]	114	static int tmpfilefd = -1;
	115	static bool startrm = false;
	116
	117	static void rmtmpfile() {
[bbb1b35]	118	if ( tmpfilefd == -1 ) return; // RACE, file created ?
	119
[2c60af75]	120	startrm = true; // RACE with C-c C-c
[b87a5ed]	121	if ( unlink( tmpname ) == -1 ) { // remove tmpname
[2c60af75]	122	perror ( "CC1 Translator error: failed, unlink" );
[b87a5ed]	123	exit( EXIT_FAILURE );
	124	} // if
[2c60af75]	125	tmpfilefd = -1; // mark removed
[bdd516a]	126	} // rmtmpfile
	127
	128
[2c60af75]	129	static void sigTermHandler( int ) { // C-c C-c
	130	if ( startrm ) return; // return and let rmtmpfile finish, and then program finishes
	131
[b87a5ed]	132	if ( tmpfilefd != -1 ) { // RACE, file created ?
[2c60af75]	133	rmtmpfile(); // remove tmpname
[b87a5ed]	134	} // if
[2c60af75]	135	exit( EXIT_FAILURE ); // terminate
[bdd516a]	136	} // sigTermHandler
	137
	138
[2c60af75]	139	static void Stage1( const int argc, const char * const argv[] ) {
[b87a5ed]	140	int code;
	141	string arg;
[51b7345]	142
[bbb1b35]	143	const char * cpp_in = nullptr;
	144	const char * cpp_out = nullptr;
[51b7345]	145
[b87a5ed]	146	bool cpp_flag = false;
[2c60af75]	147	bool o_flag = false;
[51b7345]	148
[bbb1b35]	149	const char * args[argc + 100]; // leave space for 100 additional cpp command line values
[b87a5ed]	150	int nargs = 1; // number of arguments in args list; 0 => command name
[bdd516a]	151
[dffaeac]	152	#ifdef __DEBUG_H__
[7350330f]	153	cerr << "#########" << endl << "Stage1 " << string( 100, '#' ) << endl << "#########" << endl;
[dffaeac]	154	#endif // __DEBUG_H__
[d43a1fe]	155	checkEnv1(); // arguments passed via environment variables
[bec4d24]	156	#ifdef __DEBUG_H__
[7350330f]	157	cerr << string( 100, '*' ) << endl;
[bec4d24]	158	for ( int i = 1; i < argc; i += 1 ) {
	159	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
	160	} // for
[7350330f]	161	cerr << string( 100, '*' ) << endl;
[bec4d24]	162	#endif // __DEBUG_H__
[7b937575]	163
[b87a5ed]	164	// process all the arguments
[51b7345]	165
[bec4d24]	166	for ( int i = 1; i < argc; i += 1 ) {
[b87a5ed]	167	arg = argv[i];
	168	if ( prefix( arg, "-" ) ) {
	169	// strip g++ flags that are inappropriate or cause duplicates in subsequent passes
	170
	171	if ( arg == "-quiet" ) {
	172	} else if ( arg == "-imultilib" \|\| arg == "-imultiarch" ) {
[db62eef]	173	i += 1; // and argument
[b87a5ed]	174	} else if ( prefix( arg, "-A" ) ) {
	175	} else if ( prefix( arg, "-D__GNU" ) ) {
	176	//********
	177	// GCC 5.6.0 SEPARATED THE -D FROM THE ARGUMENT!
	178	//********
	179	} else if ( arg == "-D" && prefix( argv[i + 1], "__GNU" ) ) {
[db62eef]	180	i += 1; // and argument
[b87a5ed]	181
	182	// strip flags controlling cpp step
	183
	184	} else if ( arg == "-D__CPP__" ) {
	185	cpp_flag = true;
	186	} else if ( arg == "-D" && string( argv[i + 1] ) == "__CPP__" ) {
[db62eef]	187	i += 1; // and argument
[b87a5ed]	188	cpp_flag = true;
	189
[2c60af75]	190	// all other flags
[b87a5ed]	191
	192	} else if ( arg == "-o" ) {
	193	i += 1;
[2c60af75]	194	o_flag = true;
	195	cpp_out = argv[i];
[b87a5ed]	196	} else {
[db62eef]	197	args[nargs++] = argv[i]; // pass flag along
[b87a5ed]	198	// CPP flags with an argument
[f8b6d921]	199	if ( arg == "-D" \|\| arg == "-U" \|\| arg == "-I" \|\| arg == "-MF" \|\| arg == "-MT" \|\| arg == "-MQ" \|\|
[b87a5ed]	200	arg == "-include" \|\| arg == "-imacros" \|\| arg == "-idirafter" \|\| arg == "-iprefix" \|\|
[6da81c7]	201	arg == "-iwithprefix" \|\| arg == "-iwithprefixbefore" \|\| arg == "-isystem" \|\| arg == "-isysroot" \|\|
	202	arg == "-dumpbase-ext" \|\| arg == "-dumpbase"
	203	) {
[b87a5ed]	204	i += 1;
[db62eef]	205	args[nargs++] = argv[i]; // pass argument along
[dffaeac]	206	#ifdef __DEBUG_H__
[b87a5ed]	207	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
[dffaeac]	208	#endif // __DEBUG_H__
[b87a5ed]	209	} else if ( arg == "-MD" \|\| arg == "-MMD" ) {
[db62eef]	210	// gcc frontend generates the dependency file-name after the -MD/-MMD flag, but it is necessary to
	211	// prefix that file name with -MF.
[2c60af75]	212	args[nargs++] = "-MF"; // insert before file
[b87a5ed]	213	i += 1;
[db62eef]	214	args[nargs++] = argv[i]; // pass argument along
[dffaeac]	215	#ifdef __DEBUG_H__
[b87a5ed]	216	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
[dffaeac]	217	#endif // __DEBUG_H__
[b87a5ed]	218	} // if
	219	} // if
	220	} else { // obtain input and possibly output files
[bbb1b35]	221	if ( cpp_in == nullptr ) {
[b87a5ed]	222	cpp_in = argv[i];
[dffaeac]	223	#ifdef __DEBUG_H__
[b87a5ed]	224	cerr << "cpp_in:\"" << cpp_in << "\"" << endl;
[dffaeac]	225	#endif // __DEBUG_H__
[bbb1b35]	226	} else if ( cpp_out == nullptr ) {
[b87a5ed]	227	cpp_out = argv[i];
[dffaeac]	228	#ifdef __DEBUG_H__
[b87a5ed]	229	cerr << "cpp_out:\"" << cpp_out << "\""<< endl;
[dffaeac]	230	#endif // __DEBUG_H__
[b87a5ed]	231	} else {
	232	cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
	233	exit( EXIT_FAILURE );
	234	} // if
	235	} // if
	236	} // for
	237
[dffaeac]	238	#ifdef __DEBUG_H__
[b87a5ed]	239	cerr << "args:";
[bec4d24]	240	for ( int i = 1; i < nargs; i += 1 ) {
[b87a5ed]	241	cerr << " " << args[i];
	242	} // for
[bbb1b35]	243	if ( cpp_in != nullptr ) cerr << " " << cpp_in;
	244	if ( cpp_out != nullptr ) cerr << " " << cpp_out;
[b87a5ed]	245	cerr << endl;
[dffaeac]	246	#endif // __DEBUG_H__
[b87a5ed]	247
[bbb1b35]	248	if ( cpp_in == nullptr ) {
[51b7345]	249	cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
	250	exit( EXIT_FAILURE );
	251	} // if
[b87a5ed]	252
	253	if ( cpp_flag ) {
	254	// The -E flag is specified on the cfa command so only run the preprocessor and output is written to standard
	255	// output or -o. The call to cfa has a -E so it does not have to be added to the argument list.
	256
[2c60af75]	257	args[0] = compiler_path.c_str();
[0163d3e]	258	if ( lang.size() == 0 ) {
	259	suffix( cpp_in, args, nargs ); // check suffix
	260	} else {
	261	args[nargs++] = "-x";
[7350330f]	262	args[nargs++] = ( *new string( lang ) ).c_str();
[0163d3e]	263	} // if
[2c60af75]	264	args[nargs++] = cpp_in;
	265	if ( o_flag ) { // location for output
	266	args[nargs++] = "-o";
[b87a5ed]	267	} // if
[2c60af75]	268	args[nargs++] = cpp_out;
[bbb1b35]	269	args[nargs] = nullptr; // terminate argument list
[51b7345]	270
[dffaeac]	271	#ifdef __DEBUG_H__
[b87a5ed]	272	cerr << "nargs: " << nargs << endl;
[bbb1b35]	273	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[b87a5ed]	274	cerr << args[i] << " ";
	275	} // for
	276	cerr << endl;
[7350330f]	277	cerr << string( 100, '*' ) << endl;
[dffaeac]	278	#endif // __DEBUG_H__
[51b7345]	279
[bbb1b35]	280	execvp( args[0], (char * const *)args ); // should not return
[2c60af75]	281	perror( "CC1 Translator error: stage 1, execvp" );
[b87a5ed]	282	exit( EXIT_FAILURE );
[51b7345]	283	} // if
	284
[2c60af75]	285	// Run the C preprocessor and save the output in the given file.
[51b7345]	286
[db62eef]	287	if ( fork() == 0 ) { // child process ?
[b87a5ed]	288	// -o xxx.ii cannot be used to write the output file from cpp because no output file is created if cpp detects
	289	// an error (e.g., cannot find include file). Whereas, output is always generated, even when there is an error,
	290	// when cpp writes to stdout. Hence, stdout is redirected into the temporary file.
[bbb1b35]	291	if ( freopen( cpp_out, "w", stdout ) == nullptr ) { // redirect stdout to output file
[2c60af75]	292	perror( "CC1 Translator error: stage 1, freopen" );
[b87a5ed]	293	exit( EXIT_FAILURE );
	294	} // if
[51b7345]	295
[2c60af75]	296	args[0] = compiler_path.c_str();
[0163d3e]	297	if ( lang.size() == 0 ) {
	298	suffix( cpp_in, args, nargs ); // check suffix
	299	} else {
	300	args[nargs++] = "-x";
[7350330f]	301	args[nargs++] = ( *new string( lang ) ).c_str();
[0163d3e]	302	} // if
[2c60af75]	303	args[nargs++] = cpp_in; // input to cpp
[bbb1b35]	304	args[nargs] = nullptr; // terminate argument list
[51b7345]	305
[dffaeac]	306	#ifdef __DEBUG_H__
[b87a5ed]	307	cerr << "cpp nargs: " << nargs << endl;
[bbb1b35]	308	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[b87a5ed]	309	cerr << args[i] << " ";
	310	} // for
	311	cerr << endl;
[dffaeac]	312	#endif // __DEBUG_H__
[51b7345]	313
[bbb1b35]	314	execvp( args[0], (char * const *)args ); // should not return
[5a43ab8]	315	perror( "CC1 Translator error: stage 1 cpp, execvp" );
	316	cerr << " invoked " << args[0] << endl;
[b87a5ed]	317	exit( EXIT_FAILURE );
[51b7345]	318	} // if
	319
[b87a5ed]	320	wait( &code ); // wait for child to finish
[51b7345]	321
[dffaeac]	322	#ifdef __DEBUG_H__
[b87a5ed]	323	cerr << "return code from cpp:" << WEXITSTATUS(code) << endl;
[dffaeac]	324	#endif // __DEBUG_H__
[51b7345]	325
[b87a5ed]	326	if ( WIFSIGNALED(code) ) { // child failed ?
[36de20d]	327	rmtmpfile(); // remove tmpname
[2c60af75]	328	cerr << "CC1 Translator error: stage 1, child failed " << WTERMSIG(code) << endl;
[b87a5ed]	329	exit( EXIT_FAILURE );
	330	} // if
[51b7345]	331
[36de20d]	332	exit( WEXITSTATUS( code ) ); // bad cpp result stops top-level gcc
[51b7345]	333	} // Stage1
	334
	335
[2c60af75]	336	static void Stage2( const int argc, const char * const * argv ) {
	337	int code;
[b87a5ed]	338	string arg;
[51b7345]	339
[bbb1b35]	340	const char * cpp_in = nullptr;
	341	const char * cpp_out = nullptr;
[51b7345]	342
[bbb1b35]	343	const char * args[argc + 100]; // leave space for 100 additional cfa command line values
[b87a5ed]	344	int nargs = 1; // number of arguments in args list; 0 => command name
[bbb1b35]	345	const char * cargs[20]; // leave space for 20 additional cfa-cpp command line values
[2c60af75]	346	int ncargs = 1; // 0 => command name
[51b7345]	347
[dffaeac]	348	#ifdef __DEBUG_H__
[7350330f]	349	cerr << "#########" << endl << "Stage2 " << string( 100, '#' ) << endl << "#########" << endl;
[dffaeac]	350	#endif // __DEBUG_H__
[2c60af75]	351	checkEnv2( cargs, ncargs ); // arguments passed via environment variables
[bec4d24]	352	#ifdef __DEBUG_H__
[7350330f]	353	cerr << string( 100, '*' ) << endl;
[bec4d24]	354	for ( int i = 1; i < argc; i += 1 ) {
	355	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
	356	} // for
[7350330f]	357	cerr << string( 100, '*' ) << endl;
[bec4d24]	358	#endif // __DEBUG_H__
[7b937575]	359
[49d3128]	360	enum {
	361	Color_Auto = 0,
	362	Color_Always = 1,
	363	Color_Never = 2,
	364	} color_arg = Color_Auto;
	365
	366	const char * color_names[3] = { "--colors=auto", "--colors=always", "--colors=never" };
	367
[b87a5ed]	368	// process all the arguments
[51b7345]	369
[bec4d24]	370	for ( int i = 1; i < argc; i += 1 ) {
[b87a5ed]	371	arg = argv[i];
	372	if ( prefix( arg, "-" ) ) {
	373	// strip inappropriate flags
[51b7345]	374
[49d3128]	375	if ( prefix( arg, "-fdiagnostics-color=" ) ) {
	376	string choice = arg.substr(20);
[e7a63e3]	377	if ( choice == "always" ) color_arg = Color_Always;
	378	else if ( choice == "never" ) color_arg = Color_Never;
	379	else if ( choice == "auto" ) color_arg = Color_Auto;
[49d3128]	380	} else if ( arg == "-fno-diagnostics-color" ) {
	381	color_arg = Color_Auto;
[36de20d]	382	} // if
[49d3128]	383
[b87a5ed]	384	if ( arg == "-quiet" \|\| arg == "-version" \|\| arg == "-fpreprocessed" \|\|
[36de20d]	385	// Currently CFA does not suppose precompiled .h files.
	386	prefix( arg, "--output-pch" ) ) {
[51b7345]	387
[b87a5ed]	388	// strip inappropriate flags with an argument
[51b7345]	389
[b301a82]	390	} else if ( arg == "-auxbase" \|\| arg == "-auxbase-strip" \|\|
	391	arg == "-dumpbase" \|\| arg == "-dumpbase-ext" \|\| arg == "-dumpdir" ) {
[b87a5ed]	392	i += 1;
[dffaeac]	393	#ifdef __DEBUG_H__
[b87a5ed]	394	cerr << "arg:\"" << argv[i] << "\"" << endl;
[dffaeac]	395	#endif // __DEBUG_H__
[51b7345]	396
[b87a5ed]	397	// all other flags
[51b7345]	398
[b87a5ed]	399	} else {
[db62eef]	400	args[nargs++] = argv[i]; // pass flag along
[b87a5ed]	401	if ( arg == "-o" ) {
	402	i += 1;
[2c60af75]	403	cpp_out = argv[i];
[db62eef]	404	args[nargs++] = argv[i]; // pass argument along
[68bceeb]	405	#ifdef __DEBUG_H__
[b87a5ed]	406	cerr << "arg:\"" << argv[i] << "\"" << endl;
[68bceeb]	407	#endif // __DEBUG_H__
[b87a5ed]	408	} // if
	409	} // if
	410	} else { // obtain input and possibly output files
[bbb1b35]	411	if ( cpp_in == nullptr ) {
[b87a5ed]	412	cpp_in = argv[i];
[dffaeac]	413	#ifdef __DEBUG_H__
[b87a5ed]	414	cerr << "cpp_in:\"" << cpp_in << "\"" << endl;
[dffaeac]	415	#endif // __DEBUG_H__
[bbb1b35]	416	} else if ( cpp_out == nullptr ) {
[2c60af75]	417	cpp_out = argv[i];
	418	#ifdef __DEBUG_H__
	419	cerr << "cpp_out:\"" << cpp_out << "\""<< endl;
	420	#endif // __DEBUG_H__
[b87a5ed]	421	} else {
[bbb1b35]	422	cerr << "Usage: " << argv[0] << " more than two files specified" << endl;
[b87a5ed]	423	exit( EXIT_FAILURE );
	424	} // if
	425	} // if
	426	} // for
[51b7345]	427
[bbb1b35]	428	if ( cpp_in == nullptr ) {
	429	cerr << "Usage: " << argv[0] << " missing input file" << endl;
	430	exit( EXIT_FAILURE );
	431	} // if
	432	if ( cpp_out == nullptr ) {
	433	cerr << "Usage: " << argv[0] << " missing output file" << endl;
	434	exit( EXIT_FAILURE );
	435	} // if
	436
[2c60af75]	437	// Create a temporary file, if needed, to store output of the cfa-cpp preprocessor. Cannot be created in forked
	438	// process because variables tmpname and tmpfilefd are cloned.
	439
[bbb1b35]	440	string cfa_cpp_out;
	441
	442	if ( ! CFA_flag ) { // run compiler ?
	443	if ( save_temps ) {
	444	cfa_cpp_out = cpp_in;
	445	size_t dot = cfa_cpp_out.find_last_of( "." );
	446	if ( dot == string::npos ) {
	447	cerr << "CC1 Translator error: stage 2, bad file name " << endl;
	448	exit( EXIT_FAILURE );
	449	} // if
[2c60af75]	450
[36de20d]	451	cfa_cpp_out = cfa_cpp_out.substr( 0, dot ) + CFA_SUFFIX;
[bbb1b35]	452	if ( creat( cfa_cpp_out.c_str(), 0666 ) == -1 ) {
	453	perror( "CC1 Translator error: stage 2, creat" );
	454	exit( EXIT_FAILURE );
	455	} // if
	456	} else {
[0bf5340]	457	tmpfilefd = mkstemps( tmpname, 4 );
[bbb1b35]	458	if ( tmpfilefd == -1 ) {
	459	perror( "CC1 Translator error: stage 2, mkstemp" );
	460	exit( EXIT_FAILURE );
	461	} // if
	462	cfa_cpp_out = tmpname;
	463	} // if
[2c60af75]	464	#ifdef __DEBUG_H__
[bbb1b35]	465	cerr << "cfa_cpp_out: " << cfa_cpp_out << endl;
[2c60af75]	466	#endif // __DEBUG_H__
	467	} // if
	468
	469	// If -CFA flag specified, run the cfa-cpp preprocessor on the temporary file, and output is written to standard
	470	// output. Otherwise, run the cfa-cpp preprocessor on the temporary file and save the result into the output file.
	471
[36de20d]	472	if ( fork() == 0 ) { // child runs CFA preprocessor
[7c8246d]	473	cargs[0] = ( *new string( bprefix + "cfa-cpp" ) ).c_str();
[2c60af75]	474	cargs[ncargs++] = cpp_in;
	475
	476	if ( CFA_flag ) { // run cfa-cpp ?
	477	if ( o_file.size() != 0 ) { // location for output
[7350330f]	478	cargs[ncargs++] = ( *new string( o_file ) ).c_str();
[2c60af75]	479	} // if
	480	} else {
[bbb1b35]	481	cargs[ncargs++] = cfa_cpp_out.c_str();
[2c60af75]	482	} // if
[49d3128]	483
	484	cargs[ncargs++] = color_names[color_arg];
	485
[5a43ab8]	486	cargs[ncargs] = nullptr; // terminate argument list
[2c60af75]	487
	488	#ifdef __DEBUG_H__
[bbb1b35]	489	for ( int i = 0; cargs[i] != nullptr; i += 1 ) {
[2c60af75]	490	cerr << cargs[i] << " ";
	491	} // for
	492	cerr << endl;
	493	#endif // __DEBUG_H__
	494
	495	execvp( cargs[0], (char * const *)cargs ); // should not return
[5a43ab8]	496	perror( "CC1 Translator error: stage 2 cfa-cpp, execvp" );
	497	cerr << " invoked " << cargs[0] << endl;
[2c60af75]	498	exit( EXIT_FAILURE );
	499	} // if
	500
	501	wait( &code ); // wait for child to finish
	502
	503	if ( WIFSIGNALED(code) ) { // child failed ?
	504	rmtmpfile(); // remove tmpname
	505	cerr << "CC1 Translator error: stage 2, child failed " << WTERMSIG(code) << endl;
	506	exit( EXIT_FAILURE );
	507	} // if
	508
	509	if ( CFA_flag ) { // no tmpfile created
	510	exit( WEXITSTATUS( code ) ); // stop regardless of success or failure
	511	} // if
	512
	513	#ifdef __DEBUG_H__
	514	cerr << "return code from cfa-cpp:" << WEXITSTATUS(code) << endl;
	515	#endif // __DEBUG_H__
	516
	517	if ( WEXITSTATUS(code) ) { // child error ?
	518	rmtmpfile(); // remove tmpname
	519	exit( WEXITSTATUS( code ) ); // do not continue
	520	} // if
	521
[dffaeac]	522	#ifdef __DEBUG_H__
[b87a5ed]	523	cerr << "args:";
[bec4d24]	524	for ( int i = 1; i < nargs; i += 1 ) {
[b87a5ed]	525	cerr << " " << args[i];
	526	} // for
[bbb1b35]	527	cerr << " " << cpp_in << endl;
[dffaeac]	528	#endif // __DEBUG_H__
[51b7345]	529
[36de20d]	530	if ( fork() == 0 ) { // child runs gcc
[2c60af75]	531	args[0] = compiler_path.c_str();
	532	args[nargs++] = "-S"; // only compile and put assembler output in specified file
[0bf5340]	533	args[nargs++] = "-x";
	534	args[nargs++] = "cpp-output";
	535
[bbb1b35]	536	args[nargs++] = cfa_cpp_out.c_str();
	537	args[nargs] = nullptr; // terminate argument list
[2c60af75]	538
	539	#ifdef __DEBUG_H__
	540	cerr << "stage2 nargs: " << nargs << endl;
[bbb1b35]	541	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[2c60af75]	542	cerr << args[i] << " ";
	543	} // for
	544	cerr << endl;
	545	#endif // __DEBUG_H__
	546
	547	execvp( args[0], (char * const *)args ); // should not return
[5a43ab8]	548	perror( "CC1 Translator error: stage 2 cc1, execvp" );
[c5c0148]	549	cerr << " invoked " << args[0] << endl;
[2c60af75]	550	exit( EXIT_FAILURE ); // tell gcc not to go any further
	551	} // if
	552
	553	wait( &code ); // wait for child to finish
[0bf5340]	554	rmtmpfile(); // remove tmpname
[2c60af75]	555
	556	if ( WIFSIGNALED(code) ) { // child failed ?
	557	cerr << "CC1 Translator error: stage 2, child failed " << WTERMSIG(code) << endl;
	558	exit( EXIT_FAILURE );
	559	} // if
[51b7345]	560
[dffaeac]	561	#ifdef __DEBUG_H__
[2c60af75]	562	cerr << "return code from gcc cc1:" << WEXITSTATUS(code) << endl;
[dffaeac]	563	#endif // __DEBUG_H__
[51b7345]	564
[2c60af75]	565	exit( WEXITSTATUS( code ) ); // stop regardless of success or failure
[51b7345]	566	} // Stage2
	567
	568
[2c60af75]	569	// This program is called twice because of the -no-integrated-cpp. The calls are differentiated by the first
	570	// command-line argument. The first call replaces the traditional cpp pass to preprocess the C program. The second call
	571	// is to the compiler, which is broken into two steps: preprocess again with cfa-cpp and then call gcc to compile the
	572	// doubly preprocessed program.
	573
[b3c36f4]	574	int main( const int argc, const char * const argv[], __attribute__((unused)) const char * const env[] ) {
[dffaeac]	575	#ifdef __DEBUG_H__
[7350330f]	576	cerr << "#########" << endl << "main cc1 " << string( 100, '#' ) << endl << "#########" << endl;
[dffaeac]	577	#endif // __DEBUG_H__
[51b7345]	578
[2c60af75]	579	signal( SIGINT, sigTermHandler );
	580	signal( SIGTERM, sigTermHandler );
	581
[bbb1b35]	582	string arg( argv[1] );
[51b7345]	583
[b87a5ed]	584	// Currently, stage 1 starts with flag -E and stage 2 with flag -fpreprocessed.
[51b7345]	585
[b87a5ed]	586	if ( arg == "-E" ) {
	587	Stage1( argc, argv );
	588	} else if ( arg == "-fpreprocessed" ) {
	589	Stage2( argc, argv );
	590	} else {
[bf5eeb2]	591	cerr << "Usage: " << argv[0] << " [-E input-file [output-file] ] \| [-fpreprocessed input-file output-file] [options]" << endl;
[b87a5ed]	592	exit( EXIT_FAILURE );
	593	} // if
[51b7345]	594	} // main
	595
	596	// Local Variables: //
[b87a5ed]	597	// tab-width: 4 //
	598	// mode: c++ //
[51b7345]	599	// compile-command: "make install" //
	600	// End: //

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