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source: driver/cfa.cc@ 9bdb8b7

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Last change on this file since 9bdb8b7 was 158b026, checked in by Thierry Delisle <tdelisle@…>, 6 years ago
Remove flags -in-tree and -disttree, now using paths and /proc/self/exe instead
Property mode set to `100644`
File size: 17.9 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	//
[76c7f65e]	7	// cfa.cc --
[b87a5ed]	8	//
[51b73452]	9	// Author : Peter A. Buhr
	10	// Created On : Tue Aug 20 13:44:49 2002
[201aeb9]	11	// Last Modified By : Peter A. Buhr
[aced69a]	12	// Last Modified On : Tue Sep 10 17:00:15 2019
	13	// Update Count : 420
[b87a5ed]	14	//
[51b73452]	15
	16	#include <iostream>
[158b026]	17	#include <cstdio> // perror
	18	#include <cstdlib> // putenv, exit
	19	#include <climits> // PATH_MAX
	20	#include <unistd.h> // execvp
	21	#include <string> // STL version
	22	#include <string.h> // strcmp
	23	#include <algorithm> // find
[51b73452]	24
[37fe352]	25	#include <sys/types.h>
	26	#include <sys/stat.h>
	27
[44bca7f]	28	#include "Common/SemanticError.h"
[b87a5ed]	29	#include "config.h" // configure info
[51b73452]	30
	31	using std::cerr;
	32	using std::endl;
	33	using std::string;
[47a8d17]	34	using std::to_string;
[51b73452]	35
[81e60f7]	36	// #define __DEBUG_H__
[51b73452]	37
[158b026]	38	// "N__=" suffix
	39	static string __CFA_FLAGPREFIX__( "__CFA_FLAG" );
[51b73452]	40
[2c60af75]	41	void Putenv( char * argv[], string arg ) {
[c2051e10]	42	// environment variables must have unique names
	43	static int flags = 0;
[2c60af75]	44
[0bf5340]	45	if ( putenv( (char )( new string( string( __CFA_FLAGPREFIX__ + to_string( flags++ ) + "__=" ) + arg ) ).c_str() ) ) {
[2c60af75]	46	cerr << argv[0] << " error, cannot set environment variable." << endl;
	47	exit( EXIT_FAILURE );
	48	} // if
	49	} // Putenv
	50
[c2051e10]	51	// check if string has prefix
[1ee048fd]	52	bool prefix( const string & arg, const string & pre ) {
[b87a5ed]	53	return arg.substr( 0, pre.size() ) == pre;
[51b73452]	54	} // prefix
	55
[1ee048fd]	56	inline bool ends_with(const string & str, const string & sfix) {
	57	if (sfix.size() > str.size()) return false;
	58	return std::equal(str.rbegin(), str.rbegin() + sfix.size(), sfix.rbegin(), sfix.rend());
	59	}
	60
[158b026]	61	// check if string has suffix
	62	bool suffix( const string & arg ) {
[8c63bb4]	63	enum { NumSuffixes = 3 };
	64	static const string suffixes[NumSuffixes] = { "cfa", "hfa", "ifa" };
[dffaeac]	65
	66	size_t dot = arg.find_last_of( "." );
	67	if ( dot == string::npos ) return false;
[8c63bb4]	68	const string * end = suffixes + NumSuffixes;
	69	return std::find( suffixes, end, arg.substr( dot + 1 ) ) != end;
[dffaeac]	70	} // suffix
[51b73452]	71
	72
[2c60af75]	73	static inline bool dirExists( const string & path ) { // check if directory exists
[37fe352]	74	struct stat info;
[2c60af75]	75	if ( stat( path.c_str(), &info ) != 0 ) return false;
[b544afa]	76	return (info.st_mode & S_IFDIR) != 0;
[2c60af75]	77	} // dirExists
[37fe352]	78
[bbfd0e0]	79	static inline string dir(const string & path) {
	80	return path.substr(0, path.find_last_of('/'));
	81	}
	82
[158b026]	83	// Different path modes
	84	enum PathMode {
	85	Installed, // cfa is installed, use prefix
	86	BuildTree, // cfa is in the tree, use source and build tree
	87	Distributed // cfa is distributed, use build tree for includes and executable directory for .cfs
	88	};
	89
	90	// Get path mode from /proc
	91	PathMode FromProc() {
	92	std::string abspath;
	93	abspath.resize(PATH_MAX);
	94
	95	// get executable path from /proc/self/exe
	96	ssize_t size = readlink("/proc/self/exe", const_cast<char*>(abspath.c_str()), abspath.size());
	97	if(size <= 0) {
	98	std::cerr << "Error could not evaluate absolute path from /proc/self/exe" << std::endl;
	99	std::cerr << "Failed with " << std::strerror(errno) << std::endl;
	100	std::exit(1);
	101	}
	102
	103	// Trim extra characters
	104	abspath.resize(size);
	105
	106	// Are we installed
	107	if(abspath.rfind(CFA_BINDIR , 0) == 0) { return Installed; }
	108
	109	// Is this the build tree
	110	if(abspath.rfind(TOP_BUILDDIR, 0) == 0) { return BuildTree; }
	111
	112	// Does this look like distcc
	113	if(abspath.find("/.cfadistcc/") != std::string::npos) { return Distributed; }
	114
	115	// None of the above? Give up since we don't know where the prelude or include directories are
	116	std::cerr << "Cannot find required files from excutable path " << abspath << std::endl;
	117	std::exit(1);
	118	}
	119
[51b73452]	120
[2c60af75]	121	#define xstr(s) str(s)
[4b1afb6]	122	#define str(s) #s
	123
[8c63bb4]	124	int main( int argc, char * argv[] ) {
[4b1afb6]	125	string Version( CFA_VERSION_LONG ); // current version number from CONFIG
[2c60af75]	126	string Major( xstr( CFA_VERSION_MAJOR ) ), Minor( xstr( CFA_VERSION_MINOR ) ), Patch( xstr( CFA_VERSION_PATCH ) );
[51b73452]	127
[d6f4488]	128	string installincdir( CFA_INCDIR ); // fixed location of include files
	129	string installlibdir( CFA_LIBDIR ); // fixed location of cc1 and cfa-cpp commands when installed
	130	string srcdriverdir ( TOP_BUILDDIR "driver"); // fixed location of cc1 and cfa-cpp commands when in tree
[51b73452]	131
[b87a5ed]	132	string heading; // banner printed at start of cfa compilation
	133	string arg; // current command-line argument during command-line parsing
[b544afa]	134	string bprefix; // path where gcc looks for compiler steps
[b87a5ed]	135	string langstd; // language standard
[51b73452]	136
[e24f13a]	137	string compiler_path( CFA_BACKEND_CC ); // path/name of C compiler
[b87a5ed]	138	string compiler_name; // name of C compiler
[51b73452]	139
[4f5a8a2]	140	bool x_flag = false; // -x flag
[bbb1b35]	141	bool nonoptarg = false; // no non-option arguments specified, i.e., no file names
	142	bool link = true; // link stage occurring
[b87a5ed]	143	bool verbose = false; // -v flag
[8c63bb4]	144	bool quiet = false; // -quiet flag
	145	bool debug = true; // -debug flag
	146	bool nolib = false; // -nolib flag
	147	bool help = false; // -help flag
[b87a5ed]	148	bool CFA_flag = false; // -CFA flag
	149	bool cpp_flag = false; // -E or -M flag, preprocessor only
[de62360d]	150	bool std_flag = false; // -std= flag
[d746bc8]	151	bool noincstd_flag = false; // -no-include-stdhdr= flag
[6e4b913]	152	bool debugging __attribute(( unused )) = false; // -g flag
[8c63bb4]	153	bool m32 = false; // -m32 flag
	154	bool m64 = false; // -m64 flag
[1ee048fd]	155	bool compiling_libs = false;
[2c60af75]	156	int o_file = 0; // -o filename position
[51b73452]	157
[158b026]	158	PathMode path = FromProc();
	159
[b87a5ed]	160	const char *args[argc + 100]; // cfa command line values, plus some space for additional flags
	161	int sargs = 1; // starting location for arguments in args list
	162	int nargs = sargs; // number of arguments in args list; 0 => command name
[51b73452]	163
[b87a5ed]	164	const char *libs[argc + 20]; // non-user libraries must come separately, plus some added libraries and flags
	165	int nlibs = 0;
[51b73452]	166
[dffaeac]	167	#ifdef __DEBUG_H__
[b87a5ed]	168	cerr << "CFA:" << endl;
[bec4d24]	169	for ( int i = 1; i < argc; i += 1 ) {
	170	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
	171	} // for
[dffaeac]	172	#endif // __DEBUG_H__
[51b73452]	173
[b87a5ed]	174	// process command-line arguments
[51b73452]	175
[b87a5ed]	176	for ( int i = 1; i < argc; i += 1 ) {
	177	arg = argv[i]; // convert to string value
	178	if ( prefix( arg, "-" ) ) {
	179	// pass through arguments
	180
	181	if ( arg == "-Xlinker" \|\| arg == "-o" ) {
[2c60af75]	182	args[nargs++] = argv[i]; // pass argument along
[b87a5ed]	183	i += 1;
	184	if ( i == argc ) continue; // next argument available ?
[2c60af75]	185	args[nargs++] = argv[i]; // pass argument along
	186	if ( arg == "-o" ) o_file = i; // remember file
[b87a5ed]	187	} else if ( arg == "-XCFA" ) { // CFA pass through
	188	i += 1;
[2c60af75]	189	Putenv( argv, argv[i] );
[b87a5ed]	190
	191	// CFA specific arguments
	192
	193	} else if ( arg == "-CFA" ) {
	194	CFA_flag = true; // strip the -CFA flag
	195	link = false;
[2c60af75]	196	args[nargs++] = "-fsyntax-only"; // stop after stage 2
[b87a5ed]	197	} else if ( arg == "-debug" ) {
	198	debug = true; // strip the debug flag
	199	} else if ( arg == "-nodebug" ) {
[2c60af75]	200	debug = false; // strip the nodebug flag
[c9e640e]	201	} else if ( arg == "-nolib" ) {
	202	nolib = true; // strip the nodebug flag
[b87a5ed]	203	} else if ( arg == "-quiet" ) {
	204	quiet = true; // strip the quiet flag
	205	} else if ( arg == "-noquiet" ) {
	206	quiet = false; // strip the noquiet flag
	207	} else if ( arg == "-help" ) {
	208	help = true; // strip the help flag
	209	} else if ( arg == "-nohelp" ) {
	210	help = false; // strip the nohelp flag
[d746bc8]	211	} else if ( arg == "-no-include-stdhdr" ) {
	212	noincstd_flag = true; // strip the no-include-stdhdr flag
[1ee048fd]	213	} else if ( arg == "-cfalib") {
	214	compiling_libs = true;
[b87a5ed]	215	} else if ( arg == "-compiler" ) {
	216	// use the user specified compiler
	217	i += 1;
	218	if ( i == argc ) continue; // next argument available ?
	219	compiler_path = argv[i];
[2c60af75]	220	Putenv( argv, arg + "=" + argv[i] );
[b87a5ed]	221
[de62360d]	222	// C specific arguments
[b87a5ed]	223
	224	} else if ( arg == "-v" ) {
	225	verbose = true; // verbosity required
[2c60af75]	226	args[nargs++] = argv[i]; // pass argument along
[b87a5ed]	227	} else if ( arg == "-g" ) {
	228	debugging = true; // symbolic debugging required
[2c60af75]	229	args[nargs++] = argv[i]; // pass argument along
[bbb1b35]	230	} else if ( arg == "-save-temps" ) {
	231	args[nargs++] = argv[i]; // pass argument along
	232	Putenv( argv, arg ); // save cfa-cpp output
[8c63bb4]	233	} else if ( prefix( arg, "-x" ) ) { // file suffix ?
	234	string lang;
[2c60af75]	235	args[nargs++] = argv[i]; // pass argument along
[8c63bb4]	236	if ( arg.length() == 2 ) { // separate argument ?
	237	i += 1;
	238	if ( i == argc ) continue; // next argument available ?
	239	lang = argv[i];
[2c60af75]	240	args[nargs++] = argv[i]; // pass argument along
[8c63bb4]	241	} else {
	242	lang = arg.substr( 2 );
	243	} // if
[4f5a8a2]	244	x_flag = lang != "none";
[e3215c5]	245	} else if ( prefix( arg, "-std=" ) \|\| prefix( arg, "--std=" ) ) {
[53ba273]	246	std_flag = true; // -std=XX provided
[2c60af75]	247	args[nargs++] = argv[i]; // pass argument along
[44bca7f]	248	} else if ( arg == "-w" ) {
[2c60af75]	249	args[nargs++] = argv[i]; // pass argument along
	250	Putenv( argv, arg );
[44bca7f]	251	} else if ( prefix( arg, "-W" ) ) { // check before next tests
	252	if ( arg == "-Werror" \|\| arg == "-Wall" ) {
[2c60af75]	253	args[nargs++] = argv[i]; // pass argument along
	254	Putenv( argv, argv[i] );
[44bca7f]	255	} else {
	256	unsigned int adv = prefix( arg, "-Wno-" ) ? 5 : 2;
[2c60af75]	257	args[nargs] = argv[i]; // conditionally pass argument along
	258	const char * warning = argv[i] + adv; // extract warning
[af39199d]	259	if ( SemanticWarning_Exist( warning ) ) { // replace the argument for cfa-cpp
[2c60af75]	260	Putenv( argv, arg );
[af39199d]	261	} // if
[44bca7f]	262	nargs += 1;
	263	} // if
[b87a5ed]	264	} else if ( prefix( arg, "-B" ) ) {
[417a630]	265	bprefix = arg.substr(2); // strip the -B flag
[b87a5ed]	266	} else if ( arg == "-c" \|\| arg == "-S" \|\| arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
[2c60af75]	267	args[nargs++] = argv[i]; // pass argument along
[b87a5ed]	268	if ( arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
	269	cpp_flag = true; // cpp only
	270	} // if
	271	link = false; // no linkage required
	272	} else if ( arg[1] == 'l' ) {
	273	// if the user specifies a library, load it after user code
[2c60af75]	274	libs[nlibs++] = argv[i];
[37fe352]	275	} else if ( arg == "-m32" ) {
	276	m32 = true;
	277	m64 = false;
[2c60af75]	278	args[nargs++] = argv[i];
[37fe352]	279	} else if ( arg == "-m64" ) {
	280	m64 = true;
	281	m32 = false;
[2c60af75]	282	args[nargs++] = argv[i];
[b87a5ed]	283	} else {
	284	// concatenate any other arguments
[2c60af75]	285	args[nargs++] = argv[i];
[b87a5ed]	286	} // if
	287	} else {
[8c63bb4]	288	bool cfa = suffix( arg ); // check suffix
[4f5a8a2]	289	if ( ! x_flag && cfa ) { // no explicit suffix and cfa suffix ?
[2c60af75]	290	args[nargs++] = "-x";
	291	args[nargs++] = "c";
[8c63bb4]	292	} // if
[2c60af75]	293	args[nargs++] = argv[i]; // concatenate files
[4f5a8a2]	294	if ( ! x_flag && cfa ) { // no explicit suffix and cfa suffix ?
[2c60af75]	295	args[nargs++] = "-x";
	296	args[nargs++] = "none";
[dffaeac]	297	} // if
[b87a5ed]	298	nonoptarg = true;
	299	} // if
	300	} // for
[51b73452]	301
[dffaeac]	302	#ifdef __x86_64__
[2c60af75]	303	args[nargs++] = "-mcx16"; // allow double-wide CAA
[dffaeac]	304	#endif // __x86_64__
[e3215c5]	305
[dffaeac]	306	#ifdef __DEBUG_H__
[b87a5ed]	307	cerr << "args:";
	308	for ( int i = 1; i < nargs; i += 1 ) {
	309	cerr << " " << args[i];
	310	} // for
	311	cerr << endl;
[dffaeac]	312	#endif // __DEBUG_H__
[51b73452]	313
[bbb1b35]	314	// -E flag stops at cc1 stage 1, so cfa-cpp in cc1 stage 2 is never executed.
[b87a5ed]	315	if ( cpp_flag && CFA_flag ) {
[aced69a]	316	CFA_flag = false;
	317	cerr << argv[0] << " warning, both -E and -CFA flags specified, using -E and ignoring -CFA." << endl;
[b87a5ed]	318	} // if
[51b73452]	319
[6e4b913]	320	// add the CFA include-library paths, which allow direct access to header files without directory qualification
[158b026]	321	string libbase;
	322	switch(path) {
	323	case Installed:
[2c60af75]	324	args[nargs++] = "-I" CFA_INCDIR;
[158b026]	325	// do not use during build
	326	if ( ! noincstd_flag ) {
[2c60af75]	327	args[nargs++] = "-I" CFA_INCDIR "stdhdr";
[a5121bf]	328	} // if
[2c60af75]	329	args[nargs++] = "-I" CFA_INCDIR "concurrency";
	330	args[nargs++] = "-I" CFA_INCDIR "containers";
[158b026]	331	libbase = CFA_LIBDIR;
	332	break;
	333	case BuildTree:
	334	case Distributed:
[2c60af75]	335	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src";
[158b026]	336	// do not use during build
	337	if ( ! noincstd_flag ) {
[2c60af75]	338	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/stdhdr";
[a5121bf]	339	} // if
[2c60af75]	340	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/concurrency";
	341	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/containers";
[158b026]	342
	343	libbase = TOP_BUILDDIR "libcfa/";
	344
	345	break;
[2c60af75]	346	} // if
[76c7f65e]	347
[a37133c]	348	// add stdbool to get defines for bool/true/false
[2c60af75]	349	args[nargs++] = "-imacros";
	350	args[nargs++] = "stdbool.h";
[a37133c]	351
[1ee048fd]	352	if( compiling_libs ) {
[2c60af75]	353	Putenv( argv, "-t" );
	354	} // if
[37fe352]	355
[bbb1b35]	356	string arch( m32 ? CFA_32_CPU : (m64 ? CFA_64_CPU : CFA_DEFAULT_CPU) );
[13a984c]	357	if ( ! m32 && ! m64 ) {
	358	if ( arch == "x86" ) {
[2c60af75]	359	args[nargs++] = "-m32";
[13a984c]	360	} else if ( arch == "x64" ) {
[2c60af75]	361	args[nargs++] = "-m64";
[13a984c]	362	} // if
[dfb7c96]	363	} // if
[a5121bf]	364
[c9e640e]	365	const char * config = nolib ? "nolib" : (debug ? "debug": "nodebug");
[a5121bf]	366	string libdir = libbase + arch + "-" + config;
[dfb7c96]	367
[158b026]	368	if (path != Distributed) {
[bbfd0e0]	369	if ( ! nolib && ! dirExists( libdir ) ) {
	370	cerr << argv[0] << " internal error, configuration " << config << " not installed." << endl;
	371	cerr << "Was looking for " << libdir << endl;
	372	for(int i = 1; i < argc; i++) {
	373	cerr << argv[i] << " ";
	374	}
	375	cerr << endl;
	376	libdir = libbase + arch + "-" + "nolib";
	377	} // if
[a5121bf]	378
[bbfd0e0]	379	if ( ! dirExists( libdir ) ) {
	380	cerr << argv[0] << " internal error, cannot find prelude directory." << endl;
	381	cerr << "Was looking for " << libdir << endl;
	382	exit( EXIT_FAILURE );
	383	} // if
[dfb7c96]	384	} // if
[a5121bf]	385
[158b026]	386	switch(path) {
	387	case Installed : Putenv( argv, "--prelude-dir=" + libdir ); break;
	388	case BuildTree : Putenv( argv, "--prelude-dir=" + libdir + "/prelude" ); break;
	389	case Distributed : Putenv( argv, "--prelude-dir=" + dir(argv[0]) ); break;
[bbfd0e0]	390	}
[81e60f7]	391
[def9d4e]	392	for ( int i = 0; i < nlibs; i += 1 ) { // copy non-user libraries after all user libraries
[2c60af75]	393	args[nargs++] = libs[i];
[def9d4e]	394	} // for
	395
[b87a5ed]	396	if ( link ) {
[2c60af75]	397	args[nargs++] = "-Xlinker";
	398	args[nargs++] = "--undefined=__cfaabi_dbg_bits_write";
	399	args[nargs++] = "-Xlinker";
	400	args[nargs++] = "--undefined=__cfaabi_interpose_startup";
	401	args[nargs++] = "-Xlinker";
	402	args[nargs++] = "--undefined=__cfaabi_appready_startup";
[6bfe5cc]	403
[b544afa]	404	// include the cfa library in case it is needed
[158b026]	405	args[nargs++] = ( *new string( string("-L" ) + libdir + (path != Installed ? "/src/.libs" : "")) ).c_str();
	406	args[nargs++] = ( *new string( string("-Wl,-rpath," ) + libdir + (path != Installed ? "/src/.libs" : "")) ).c_str();
[2c60af75]	407	args[nargs++] = "-Wl,--push-state,--as-needed";
	408	args[nargs++] = "-lcfathread";
	409	args[nargs++] = "-Wl,--pop-state";
	410	args[nargs++] = "-lcfa";
	411	args[nargs++] = "-lpthread";
	412	args[nargs++] = "-ldl";
	413	args[nargs++] = "-lrt";
	414	args[nargs++] = "-lm";
[51b73452]	415	} // if
	416
[2c60af75]	417	args[nargs++] = "-fexceptions"; // add exception flags (unconditionally)
[e9145a3]	418
[2c60af75]	419	// add flags based on the type of compile
[8c17ab0]	420
[2c60af75]	421	args[nargs++] = ( *new string( string("-D__CFA_MAJOR__=") + Major ) ).c_str();
	422	args[nargs++] = ( *new string( string("-D__CFA_MINOR__=") + Minor ) ).c_str();
	423	args[nargs++] = ( *new string( string("-D__CFA_PATCH__=") + Patch ) ).c_str();
	424	args[nargs++] = "-D__CFA__";
	425	args[nargs++] = "-D__CFORALL__";
	426	args[nargs++] = "-D__cforall";
[51b73452]	427
[b87a5ed]	428	if ( cpp_flag ) {
[2c60af75]	429	args[nargs++] = "-D__CPP__";
[b87a5ed]	430	} // if
[51b73452]	431
[b87a5ed]	432	if ( CFA_flag ) {
[2c60af75]	433	Putenv( argv, "-N" );
	434	Putenv( argv, "-CFA" );
[bbb1b35]	435	// -CFA implies cc1 stage 2, but gcc does not pass the -o file to this stage because it believe the file is for
	436	// the linker. Hence, the -o file is explicit passed to cc1 stage 2 and used as cfa-cpp's output file.
[2c60af75]	437	if ( o_file ) Putenv( argv, string( "-o=" ) + argv[o_file] );
[fa477f7]	438	} else {
[2c60af75]	439	Putenv( argv, "-L" );
[b87a5ed]	440	} // if
[2c60af75]	441
[b87a5ed]	442	if ( debug ) {
	443	heading += " (debug)";
[2c60af75]	444	args[nargs++] = "-D__CFA_DEBUG__";
[b87a5ed]	445	} else {
	446	heading += " (no debug)";
	447	} // if
[51b73452]	448
[417a630]	449	if ( bprefix.length() == 0 ) {
[158b026]	450	switch(path) {
	451	case Installed : bprefix = installlibdir; break;
	452	case BuildTree : bprefix = srcdriverdir ; break;
	453	case Distributed : bprefix = dir(argv[0]) ; break;
[bbfd0e0]	454	}
[417a630]	455	if ( bprefix[bprefix.length() - 1] != '/' ) bprefix += '/';
[81e60f7]	456	Putenv( argv, string("-B=") + bprefix );
[b87a5ed]	457	} // if
[51b73452]	458
[2c60af75]	459	args[nargs++] = "-Xlinker"; // used by backtrace
	460	args[nargs++] = "-export-dynamic";
[6bfe5cc]	461
[b87a5ed]	462	// execute the compilation command
[51b73452]	463
[b87a5ed]	464	args[0] = compiler_path.c_str(); // set compiler command for exec
	465	// find actual name of the compiler independent of the path to it
	466	int p = compiler_path.find_last_of( '/' ); // scan r -> l for first '/'
	467	if ( p == -1 ) {
	468	compiler_name = compiler_path;
	469	} else {
	470	compiler_name = *new string( compiler_path.substr( p + 1 ) );
	471	} // if
[51b73452]	472
[b87a5ed]	473	if ( prefix( compiler_name, "gcc" ) ) { // allow suffix on gcc name
[2c60af75]	474	args[nargs++] = "-no-integrated-cpp";
	475	args[nargs++] = "-Wno-deprecated";
	476	#ifdef HAVE_CAST_FUNCTION_TYPE
	477	args[nargs++] = "-Wno-cast-function-type";
	478	#endif // HAVE_CAST_FUNCTION_TYPE
[157d094]	479	if ( ! std_flag ) { // default c11, if none specified
[2c60af75]	480	args[nargs++] = "-std=gnu11";
[de62360d]	481	} // if
[2c60af75]	482	args[nargs++] = "-fgnu89-inline";
	483	args[nargs++] = "-D__int8_t_defined"; // prevent gcc type-size attributes
[417a630]	484	args[nargs++] = ( *new string( string("-B") + bprefix ) ).c_str();
[b87a5ed]	485	} else {
[e24f13a]	486	cerr << argv[0] << " error, compiler \"" << compiler_name << "\" unsupported." << endl;
[b87a5ed]	487	exit( EXIT_FAILURE );
	488	} // if
[51b73452]	489
[bbb1b35]	490	args[nargs] = nullptr; // terminate
[51b73452]	491
[dffaeac]	492	#ifdef __DEBUG_H__
[b87a5ed]	493	cerr << "nargs: " << nargs << endl;
	494	cerr << "args:" << endl;
[bbb1b35]	495	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[b87a5ed]	496	cerr << " \"" << args[i] << "\"" << endl;
	497	} // for
[1ee048fd]	498	cerr << endl;
[dffaeac]	499	#endif // __DEBUG_H__
[51b73452]	500
[b87a5ed]	501	if ( ! quiet ) {
	502	cerr << "CFA " << "Version " << Version << heading << endl;
	503	if ( help ) {
	504	cerr <<
	505	"-debug\t\t\t: use cfa runtime with debug checking" << endl <<
	506	"-help\t\t\t: print this help message" << endl <<
	507	"-quiet\t\t\t: print no messages from the cfa command" << endl <<
	508	"-CFA\t\t\t: run the cpp preprocessor and the cfa-cpp translator" << endl <<
	509	"-XCFA -cfa-cpp-flag\t: pass next flag as-is to the cfa-cpp translator" << endl <<
	510	"...\t\t\t: any other " << compiler_name << " flags" << endl;
	511	} // if
[51b73452]	512	} // if
	513
[b87a5ed]	514	if ( verbose ) {
	515	if ( argc == 2 ) exit( EXIT_SUCCESS ); // if only the -v flag is specified, do not invoke gcc
[51b73452]	516
[bbb1b35]	517	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[b87a5ed]	518	cerr << args[i] << " ";
	519	} // for
	520	cerr << endl;
	521	} // if
[51b73452]	522
[b87a5ed]	523	if ( ! nonoptarg ) {
	524	cerr << argv[0] << " error, no input files" << endl;
	525	exit( EXIT_FAILURE );
	526	} // if
[51b73452]	527
[b87a5ed]	528	// execute the command and return the result
[51b73452]	529
[b87a5ed]	530	execvp( args[0], (char const )args ); // should not return
[2c60af75]	531	perror( "CFA Translator error: execvp" );
[b87a5ed]	532	exit( EXIT_FAILURE );
[51b73452]	533	} // main
	534
	535	// Local Variables: //
[b87a5ed]	536	// tab-width: 4 //
	537	// mode: c++ //
[51b73452]	538	// compile-command: "make install" //
	539	// End: //

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