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source: driver/cfa.cc @ 062467b

Last change on this file since 062467b was c92bdcc, checked in by Andrew Beach <ajbeach@…>, 6 months ago
Updated the rest of the names in src/ (except for the generated files).
Property mode set to `100644`
File size: 20.5 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	//
[51b7345]	9	// Author : Peter A. Buhr
	10	// Created On : Tue Aug 20 13:44:49 2002
[201aeb9]	11	// Last Modified By : Peter A. Buhr
[c2d728c]	12	// Last Modified On : Thu Sep 28 21:53:54 2023
	13	// Update Count : 484
[b87a5ed]	14	//
[51b7345]	15
	16	#include <iostream>
[7f51b9d]	17	#include <cstdio> // perror
	18	#include <cstdlib> // putenv, exit
	19	#include <climits> // PATH_MAX
	20	#include <string> // STL version
	21	#include <algorithm> // find
[c2d728c]	22	using namespace std;
[51b7345]	23
[36de20d]	24	#include <unistd.h> // execvp
[37fe352]	25	#include <sys/types.h>
	26	#include <sys/stat.h>
	27
[c92bdcc]	28	#include "Common/SemanticError.hpp"
[b87a5ed]	29	#include "config.h" // configure info
[51b7345]	30
[36de20d]	31	//#define __DEBUG_H__
[51b7345]	32
[7f51b9d]	33	#define xstr(s) str(s)
	34	#define str(s) #s
	35
[36de20d]	36	static string __CFA_FLAGPREFIX__( "__CFA_FLAG" ); // "__CFA_FLAG__=" suffix
[51b7345]	37
[7f51b9d]	38	static void Putenv( char * argv[], string arg ) {
[c2051e10]	39	// environment variables must have unique names
	40	static int flags = 0;
[2c60af75]	41
[81bd7e3]	42	// This allocation 'leaks' memory from the program to the execution
	43	// environment, as putenv does not manage the storage of the string used
	44	// as an environment variable. This leak is necessary to ensure the
	45	// underlying C string is allocated long enough.
[0bf5340]	46	if ( putenv( (char )( new string( string( __CFA_FLAGPREFIX__ + to_string( flags++ ) + "__=" ) + arg ) ).c_str() ) ) {
[2c60af75]	47	cerr << argv[0] << " error, cannot set environment variable." << endl;
	48	exit( EXIT_FAILURE );
	49	} // if
	50	} // Putenv
	51
[7f51b9d]	52	static bool prefix( const string & arg, const string & pre ) { // check if string has prefix
[b87a5ed]	53	return arg.substr( 0, pre.size() ) == pre;
[51b7345]	54	} // prefix
	55
[158b026]	56	// check if string has suffix
[7f51b9d]	57	static bool suffix( const string & arg ) {
[8c63bb4]	58	enum { NumSuffixes = 3 };
	59	static const string suffixes[NumSuffixes] = { "cfa", "hfa", "ifa" };
[dffaeac]	60
	61	size_t dot = arg.find_last_of( "." );
	62	if ( dot == string::npos ) return false;
[8c63bb4]	63	const string * end = suffixes + NumSuffixes;
	64	return std::find( suffixes, end, arg.substr( dot + 1 ) ) != end;
[dffaeac]	65	} // suffix
[51b7345]	66
[2c60af75]	67	static inline bool dirExists( const string & path ) { // check if directory exists
[37fe352]	68	struct stat info;
[2c60af75]	69	if ( stat( path.c_str(), &info ) != 0 ) return false;
[b544afa]	70	return (info.st_mode & S_IFDIR) != 0;
[2c60af75]	71	} // dirExists
[37fe352]	72
[bbfd0e0]	73	static inline string dir(const string & path) {
	74	return path.substr(0, path.find_last_of('/'));
[7f51b9d]	75	} // dir
[bbfd0e0]	76
[158b026]	77	// Different path modes
	78	enum PathMode {
	79	Installed, // cfa is installed, use prefix
	80	BuildTree, // cfa is in the tree, use source and build tree
	81	Distributed // cfa is distributed, use build tree for includes and executable directory for .cfs
	82	};
	83
	84	// Get path mode from /proc
	85	PathMode FromProc() {
	86	std::string abspath;
	87	abspath.resize(PATH_MAX);
	88
	89	// get executable path from /proc/self/exe
	90	ssize_t size = readlink("/proc/self/exe", const_cast<char*>(abspath.c_str()), abspath.size());
[fcd1a469]	91	if ( size <= 0 ) {
[158b026]	92	std::cerr << "Error could not evaluate absolute path from /proc/self/exe" << std::endl;
	93	std::cerr << "Failed with " << std::strerror(errno) << std::endl;
	94	std::exit(1);
[fcd1a469]	95	} // if
[158b026]	96
	97	// Trim extra characters
	98	abspath.resize(size);
	99
	100	// Are we installed
[fcd1a469]	101	if ( abspath.rfind(CFA_BINDIR, 0) == 0 ) { return Installed; }
[158b026]	102
	103	// Is this the build tree
[fcd1a469]	104	if ( abspath.rfind(TOP_BUILDDIR, 0 ) == 0 ) { return BuildTree; }
[158b026]	105
	106	// Does this look like distcc
[fcd1a469]	107	if ( abspath.find( "/.cfadistcc/" ) != std::string::npos ) { return Distributed; }
[158b026]	108
	109	// None of the above? Give up since we don't know where the prelude or include directories are
	110	std::cerr << "Cannot find required files from excutable path " << abspath << std::endl;
	111	std::exit(1);
	112	}
	113
[51b7345]	114
[8c63bb4]	115	int main( int argc, char * argv[] ) {
[4b1afb6]	116	string Version( CFA_VERSION_LONG ); // current version number from CONFIG
[2c60af75]	117	string Major( xstr( CFA_VERSION_MAJOR ) ), Minor( xstr( CFA_VERSION_MINOR ) ), Patch( xstr( CFA_VERSION_PATCH ) );
[51b7345]	118
[d6f4488]	119	string installincdir( CFA_INCDIR ); // fixed location of include files
	120	string installlibdir( CFA_LIBDIR ); // fixed location of cc1 and cfa-cpp commands when installed
	121	string srcdriverdir ( TOP_BUILDDIR "driver"); // fixed location of cc1 and cfa-cpp commands when in tree
[51b7345]	122
[b87a5ed]	123	string heading; // banner printed at start of cfa compilation
	124	string arg; // current command-line argument during command-line parsing
[b544afa]	125	string bprefix; // path where gcc looks for compiler steps
[b87a5ed]	126	string langstd; // language standard
[51b7345]	127
[e24f13a]	128	string compiler_path( CFA_BACKEND_CC ); // path/name of C compiler
[b87a5ed]	129	string compiler_name; // name of C compiler
[51b7345]	130
[4f5a8a2]	131	bool x_flag = false; // -x flag
[bbb1b35]	132	bool nonoptarg = false; // no non-option arguments specified, i.e., no file names
	133	bool link = true; // link stage occurring
[b87a5ed]	134	bool verbose = false; // -v flag
[8c63bb4]	135	bool quiet = false; // -quiet flag
	136	bool debug = true; // -debug flag
	137	bool nolib = false; // -nolib flag
	138	bool help = false; // -help flag
[b87a5ed]	139	bool CFA_flag = false; // -CFA flag
	140	bool cpp_flag = false; // -E or -M flag, preprocessor only
[de62360d]	141	bool std_flag = false; // -std= flag
[d746bc8]	142	bool noincstd_flag = false; // -no-include-stdhdr= flag
[6e4b913]	143	bool debugging __attribute(( unused )) = false; // -g flag
[8c63bb4]	144	bool m32 = false; // -m32 flag
	145	bool m64 = false; // -m64 flag
[1ee048fd]	146	bool compiling_libs = false;
[2c60af75]	147	int o_file = 0; // -o filename position
[51b7345]	148
[158b026]	149	PathMode path = FromProc();
	150
[36de20d]	151	const char * args[argc + 100]; // cfa command line values, plus some space for additional flags
[b87a5ed]	152	int sargs = 1; // starting location for arguments in args list
	153	int nargs = sargs; // number of arguments in args list; 0 => command name
[51b7345]	154
[36de20d]	155	const char * libs[argc + 20]; // non-user libraries must come separately, plus some added libraries and flags
[b87a5ed]	156	int nlibs = 0;
[51b7345]	157
[dffaeac]	158	#ifdef __DEBUG_H__
[b87a5ed]	159	cerr << "CFA:" << endl;
[bec4d24]	160	for ( int i = 1; i < argc; i += 1 ) {
	161	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
	162	} // for
[dffaeac]	163	#endif // __DEBUG_H__
[51b7345]	164
[b87a5ed]	165	// process command-line arguments
[51b7345]	166
[b87a5ed]	167	for ( int i = 1; i < argc; i += 1 ) {
	168	arg = argv[i]; // convert to string value
	169	if ( prefix( arg, "-" ) ) {
	170	// pass through arguments
	171
	172	if ( arg == "-Xlinker" \|\| arg == "-o" ) {
[67bfc50]	173	args[nargs++] = argv[i]; // pass flag along
[b87a5ed]	174	i += 1;
	175	if ( i == argc ) continue; // next argument available ?
[2c60af75]	176	args[nargs++] = argv[i]; // pass argument along
	177	if ( arg == "-o" ) o_file = i; // remember file
[36de20d]	178
	179	// CFA specific arguments
	180
[67bfc50]	181	} else if ( strncmp(arg.c_str(), "-XCFA", 5) == 0 ) { // CFA pass through
	182	if ( arg.size() == 5 ) {
[0aa20e3]	183	i += 1;
[67bfc50]	184	if ( i == argc ) continue; // next argument available ?
[fcd1a469]	185	Putenv( argv, argv[i] ); // make available for cc1
[67bfc50]	186	} else if ( arg[5] == ',' ) { // CFA specific arguments
[fcd1a469]	187	string xcfargs = arg.substr( 6 ) + ","; // add sentinel
	188	for ( ;; ) {
	189	size_t posn = xcfargs.find_first_of( "," ); // find separator
	190	if ( posn == string::npos ) break; // any characters left ?
	191	string xcfarg = xcfargs.substr( 0, posn ); // remove XCFA argument
	192	Putenv( argv, xcfarg ); // make available for cc1
	193	xcfargs.erase( 0, posn + 1 ); // remove first argument and comma
	194	} // for
[67bfc50]	195	} else { // CFA specific arguments
[fcd1a469]	196	assert( false ); // this does not make sense
[0aa20e3]	197	args[nargs++] = argv[i];
[67bfc50]	198	} // if
[b87a5ed]	199	} else if ( arg == "-CFA" ) {
[372b6d3]	200	CFA_flag = true; // strip -CFA flag
[b87a5ed]	201	link = false;
[2c60af75]	202	args[nargs++] = "-fsyntax-only"; // stop after stage 2
[b87a5ed]	203	} else if ( arg == "-debug" ) {
[372b6d3]	204	debug = true; // strip debug flag
[b87a5ed]	205	} else if ( arg == "-nodebug" ) {
[372b6d3]	206	debug = false; // strip nodebug flag
[b87a5ed]	207	} else if ( arg == "-quiet" ) {
[372b6d3]	208	quiet = true; // strip quiet flag
[b87a5ed]	209	} else if ( arg == "-noquiet" ) {
[372b6d3]	210	quiet = false; // strip noquiet flag
	211	} else if ( arg == "-invariant" ) {
	212	Putenv( argv, "-" + arg );
	213	} else if ( arg == "--invariant" ) {
	214	Putenv( argv, arg );
[36de20d]	215	} else if ( arg == "-no-include-stdhdr" ) {
[372b6d3]	216	noincstd_flag = true; // strip no-include-stdhdr flag
[36de20d]	217	} else if ( arg == "-nolib" ) {
[372b6d3]	218	nolib = true; // strip nolib flag
[b87a5ed]	219	} else if ( arg == "-help" ) {
[372b6d3]	220	help = true; // strip help flag
[b87a5ed]	221	} else if ( arg == "-nohelp" ) {
[372b6d3]	222	help = false; // strip nohelp flag
[1ee048fd]	223	} else if ( arg == "-cfalib") {
	224	compiling_libs = true;
[b87a5ed]	225	} else if ( arg == "-compiler" ) {
	226	// use the user specified compiler
	227	i += 1;
	228	if ( i == argc ) continue; // next argument available ?
	229	compiler_path = argv[i];
[2c60af75]	230	Putenv( argv, arg + "=" + argv[i] );
[b87a5ed]	231
[de62360d]	232	// C specific arguments
[b87a5ed]	233
	234	} else if ( arg == "-v" ) {
	235	verbose = true; // verbosity required
[67bfc50]	236	args[nargs++] = argv[i]; // pass flag along
[b87a5ed]	237	} else if ( arg == "-g" ) {
	238	debugging = true; // symbolic debugging required
[67bfc50]	239	args[nargs++] = argv[i]; // pass flag along
[b4130f9]	240	} else if ( arg == "-save-temps" \|\| arg == "--save-temps" ) {
[67bfc50]	241	args[nargs++] = argv[i]; // pass flag along
[bbb1b35]	242	Putenv( argv, arg ); // save cfa-cpp output
[8c63bb4]	243	} else if ( prefix( arg, "-x" ) ) { // file suffix ?
	244	string lang;
[67bfc50]	245	args[nargs++] = argv[i]; // pass flag along
[8c63bb4]	246	if ( arg.length() == 2 ) { // separate argument ?
	247	i += 1;
	248	if ( i == argc ) continue; // next argument available ?
	249	lang = argv[i];
[2c60af75]	250	args[nargs++] = argv[i]; // pass argument along
[8c63bb4]	251	} else {
	252	lang = arg.substr( 2 );
	253	} // if
[0163d3e]	254	if ( x_flag ) {
	255	cerr << argv[0] << " warning, only one -x flag per compile, ignoring subsequent flag." << endl;
	256	} else {
	257	x_flag = true;
	258	Putenv( argv, string( "-x=" ) + lang );
	259	} // if
[e3215c5]	260	} else if ( prefix( arg, "-std=" ) \|\| prefix( arg, "--std=" ) ) {
[53ba273]	261	std_flag = true; // -std=XX provided
[67bfc50]	262	args[nargs++] = argv[i]; // pass flag along
[44bca7f]	263	} else if ( arg == "-w" ) {
[67bfc50]	264	args[nargs++] = argv[i]; // pass flag along
[2c60af75]	265	Putenv( argv, arg );
[44bca7f]	266	} else if ( prefix( arg, "-W" ) ) { // check before next tests
	267	if ( arg == "-Werror" \|\| arg == "-Wall" ) {
[67bfc50]	268	args[nargs++] = argv[i]; // pass flag along
[2c60af75]	269	Putenv( argv, argv[i] );
[44bca7f]	270	} else {
	271	unsigned int adv = prefix( arg, "-Wno-" ) ? 5 : 2;
[2c60af75]	272	args[nargs] = argv[i]; // conditionally pass argument along
	273	const char * warning = argv[i] + adv; // extract warning
[af39199d]	274	if ( SemanticWarning_Exist( warning ) ) { // replace the argument for cfa-cpp
[2c60af75]	275	Putenv( argv, arg );
[af39199d]	276	} // if
[44bca7f]	277	nargs += 1;
	278	} // if
[b87a5ed]	279	} else if ( prefix( arg, "-B" ) ) {
[372b6d3]	280	bprefix = arg.substr(2); // strip -B flag
[b87a5ed]	281	} else if ( arg == "-c" \|\| arg == "-S" \|\| arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
[67bfc50]	282	args[nargs++] = argv[i]; // pass flag along
[b87a5ed]	283	if ( arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
	284	cpp_flag = true; // cpp only
	285	} // if
	286	link = false; // no linkage required
[67bfc50]	287	} else if ( arg == "-D" \|\| arg == "-U" \|\| arg == "-I" \|\| arg == "-MF" \|\| arg == "-MT" \|\| arg == "-MQ" \|\|
	288	arg == "-include" \|\| arg == "-imacros" \|\| arg == "-idirafter" \|\| arg == "-iprefix" \|\|
	289	arg == "-iwithprefix" \|\| arg == "-iwithprefixbefore" \|\| arg == "-isystem" \|\| arg == "-isysroot" ) {
	290	args[nargs++] = argv[i]; // pass flag along
	291	i += 1;
	292	args[nargs++] = argv[i]; // pass argument along
[b87a5ed]	293	} else if ( arg[1] == 'l' ) {
	294	// if the user specifies a library, load it after user code
[2c60af75]	295	libs[nlibs++] = argv[i];
[37fe352]	296	} else if ( arg == "-m32" ) {
	297	m32 = true;
	298	m64 = false;
[2c60af75]	299	args[nargs++] = argv[i];
[37fe352]	300	} else if ( arg == "-m64" ) {
	301	m64 = true;
	302	m32 = false;
[2c60af75]	303	args[nargs++] = argv[i];
[b87a5ed]	304	} else {
	305	// concatenate any other arguments
[2c60af75]	306	args[nargs++] = argv[i];
[b87a5ed]	307	} // if
	308	} else {
[8c63bb4]	309	bool cfa = suffix( arg ); // check suffix
[4f5a8a2]	310	if ( ! x_flag && cfa ) { // no explicit suffix and cfa suffix ?
[2c60af75]	311	args[nargs++] = "-x";
	312	args[nargs++] = "c";
[8c63bb4]	313	} // if
[2c60af75]	314	args[nargs++] = argv[i]; // concatenate files
[4f5a8a2]	315	if ( ! x_flag && cfa ) { // no explicit suffix and cfa suffix ?
[2c60af75]	316	args[nargs++] = "-x";
	317	args[nargs++] = "none";
[dffaeac]	318	} // if
[b87a5ed]	319	nonoptarg = true;
	320	} // if
	321	} // for
[51b7345]	322
[f4530d7]	323	#ifdef __x86_64__
	324	args[nargs++] = "-mcx16"; // allow double-wide CAS
	325	#endif // __x86_64__
	326
[8cbb6aa]	327	// ARM -mno-outline-atomics => use LL/SC instead of calls to atomic routines: __aarch64_swp_acq_rel, __aarch64_cas8_acq_rel
	328	// ARM -march=armv8.2-a+lse => generate Arm LSE extension instructions SWAP and CAS
	329	// https://community.arm.com/developer/tools-software/tools/b/tools-software-ides-blog/posts/making-the-most-of-the-arm-architecture-in-gcc-10
[41639089]	330	#ifdef __ARM_ARCH
	331	args[nargs++] = "-mno-outline-atomics"; // use ARM LL/SC instructions for atomics
[727c39d5]	332	// args[nargs++] = "-march=armv8.2-a+lse"; // use atomic instructions
[41639089]	333	#endif // __ARM_ARCH
	334
[dffaeac]	335	#ifdef __DEBUG_H__
[b87a5ed]	336	cerr << "args:";
	337	for ( int i = 1; i < nargs; i += 1 ) {
	338	cerr << " " << args[i];
	339	} // for
	340	cerr << endl;
[dffaeac]	341	#endif // __DEBUG_H__
[51b7345]	342
[bbb1b35]	343	// -E flag stops at cc1 stage 1, so cfa-cpp in cc1 stage 2 is never executed.
[b87a5ed]	344	if ( cpp_flag && CFA_flag ) {
[aced69a]	345	CFA_flag = false;
	346	cerr << argv[0] << " warning, both -E and -CFA flags specified, using -E and ignoring -CFA." << endl;
[b87a5ed]	347	} // if
[51b7345]	348
[6e4b913]	349	// add the CFA include-library paths, which allow direct access to header files without directory qualification
[158b026]	350	string libbase;
	351	switch(path) {
[36de20d]	352	case Installed:
[2c60af75]	353	args[nargs++] = "-I" CFA_INCDIR;
[158b026]	354	// do not use during build
	355	if ( ! noincstd_flag ) {
[2c60af75]	356	args[nargs++] = "-I" CFA_INCDIR "stdhdr";
[a5121bf]	357	} // if
[2c60af75]	358	args[nargs++] = "-I" CFA_INCDIR "concurrency";
[55b060d]	359	args[nargs++] = "-I" CFA_INCDIR "collections";
[158b026]	360	libbase = CFA_LIBDIR;
	361	break;
[36de20d]	362	case BuildTree:
	363	case Distributed:
[2c60af75]	364	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src";
[158b026]	365	// do not use during build
	366	if ( ! noincstd_flag ) {
[2c60af75]	367	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/stdhdr";
[a5121bf]	368	} // if
[2c60af75]	369	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/concurrency";
[55b060d]	370	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/collections";
[158b026]	371
	372	libbase = TOP_BUILDDIR "libcfa/";
	373
	374	break;
[2c60af75]	375	} // if
[76c7f65e]	376
[a37133c]	377	// add stdbool to get defines for bool/true/false
[2c60af75]	378	args[nargs++] = "-imacros";
	379	args[nargs++] = "stdbool.h";
[a37133c]	380
[fcd1a469]	381	if ( compiling_libs ) {
[2c60af75]	382	Putenv( argv, "-t" );
	383	} // if
[37fe352]	384
[bbb1b35]	385	string arch( m32 ? CFA_32_CPU : (m64 ? CFA_64_CPU : CFA_DEFAULT_CPU) );
[13a984c]	386	if ( ! m32 && ! m64 ) {
	387	if ( arch == "x86" ) {
[2c60af75]	388	args[nargs++] = "-m32";
[13a984c]	389	} else if ( arch == "x64" ) {
[2c60af75]	390	args[nargs++] = "-m64";
[13a984c]	391	} // if
[dfb7c96]	392	} // if
[a5121bf]	393
[c9e640e]	394	const char * config = nolib ? "nolib" : (debug ? "debug": "nodebug");
[a5121bf]	395	string libdir = libbase + arch + "-" + config;
[dfb7c96]	396
[36de20d]	397	if ( path != Distributed ) {
[bbfd0e0]	398	if ( ! nolib && ! dirExists( libdir ) ) {
	399	cerr << argv[0] << " internal error, configuration " << config << " not installed." << endl;
	400	cerr << "Was looking for " << libdir << endl;
	401	for(int i = 1; i < argc; i++) {
	402	cerr << argv[i] << " ";
	403	}
	404	cerr << endl;
	405	libdir = libbase + arch + "-" + "nolib";
	406	} // if
[a5121bf]	407
[bbfd0e0]	408	if ( ! dirExists( libdir ) ) {
	409	cerr << argv[0] << " internal error, cannot find prelude directory." << endl;
	410	cerr << "Was looking for " << libdir << endl;
	411	exit( EXIT_FAILURE );
	412	} // if
[dfb7c96]	413	} // if
[a5121bf]	414
[c680a4b]	415	string preludedir;
[158b026]	416	switch(path) {
[36de20d]	417	case Installed : preludedir = libdir; break;
	418	case BuildTree : preludedir = libdir + "/prelude"; break;
	419	case Distributed : preludedir = dir(argv[0]); break;
	420	} // switch
[81e60f7]	421
[c680a4b]	422	Putenv( argv, "--prelude-dir=" + preludedir );
	423	args[nargs++] = "-include";
	424	args[nargs++] = (*new string(preludedir + "/defines.hfa")).c_str();
	425
[def9d4e]	426	for ( int i = 0; i < nlibs; i += 1 ) { // copy non-user libraries after all user libraries
[2c60af75]	427	args[nargs++] = libs[i];
[def9d4e]	428	} // for
	429
[b87a5ed]	430	if ( link ) {
[2c60af75]	431	args[nargs++] = "-Xlinker";
	432	args[nargs++] = "--undefined=__cfaabi_dbg_bits_write";
	433	args[nargs++] = "-Xlinker";
	434	args[nargs++] = "--undefined=__cfaabi_interpose_startup";
	435	args[nargs++] = "-Xlinker";
	436	args[nargs++] = "--undefined=__cfaabi_appready_startup";
[c8c0c7c5]	437	args[nargs++] = "-z";
	438	args[nargs++] = "execstack";
[6bfe5cc]	439
[b544afa]	440	// include the cfa library in case it is needed
[158b026]	441	args[nargs++] = ( *new string( string("-L" ) + libdir + (path != Installed ? "/src/.libs" : "")) ).c_str();
	442	args[nargs++] = ( *new string( string("-Wl,-rpath," ) + libdir + (path != Installed ? "/src/.libs" : "")) ).c_str();
[2c60af75]	443	args[nargs++] = "-Wl,--push-state,--as-needed";
	444	args[nargs++] = "-lcfathread";
	445	args[nargs++] = "-Wl,--pop-state";
[92a9768]	446	args[nargs++] = "-Wl,--push-state,--no-as-needed";
[2c60af75]	447	args[nargs++] = "-lcfa";
[92a9768]	448	args[nargs++] = "-Wl,--pop-state";
[f4530d7]	449	args[nargs++] = "-pthread";
[9b34766]	450	#if defined( __x86_64__ ) \|\| defined( __ARM_ARCH )
[f4530d7]	451	args[nargs++] = "-latomic"; // allow double-wide CAS
[314dab6]	452	#endif // __x86_64__
[2c60af75]	453	args[nargs++] = "-ldl";
	454	args[nargs++] = "-lm";
[51b7345]	455	} // if
	456
[2c60af75]	457	args[nargs++] = "-fexceptions"; // add exception flags (unconditionally)
[f5f2768]	458	args[nargs++] = "-D_GNU_SOURCE"; // force gnu libraries
[e9145a3]	459
[2c60af75]	460	// add flags based on the type of compile
[8c17ab0]	461
[2c60af75]	462	args[nargs++] = ( *new string( string("-D__CFA_MAJOR__=") + Major ) ).c_str();
	463	args[nargs++] = ( *new string( string("-D__CFA_MINOR__=") + Minor ) ).c_str();
	464	args[nargs++] = ( *new string( string("-D__CFA_PATCH__=") + Patch ) ).c_str();
	465	args[nargs++] = "-D__CFA__";
	466	args[nargs++] = "-D__CFORALL__";
	467	args[nargs++] = "-D__cforall";
[51b7345]	468
[b87a5ed]	469	if ( cpp_flag ) {
[2c60af75]	470	args[nargs++] = "-D__CPP__";
[b87a5ed]	471	} // if
[51b7345]	472
[b87a5ed]	473	if ( CFA_flag ) {
[2c60af75]	474	Putenv( argv, "-N" );
	475	Putenv( argv, "-CFA" );
[bbb1b35]	476	// -CFA implies cc1 stage 2, but gcc does not pass the -o file to this stage because it believe the file is for
	477	// the linker. Hence, the -o file is explicit passed to cc1 stage 2 and used as cfa-cpp's output file.
[2c60af75]	478	if ( o_file ) Putenv( argv, string( "-o=" ) + argv[o_file] );
[fa477f7]	479	} else {
[2c60af75]	480	Putenv( argv, "-L" );
[b87a5ed]	481	} // if
[2c60af75]	482
[b87a5ed]	483	if ( debug ) {
	484	heading += " (debug)";
[2c60af75]	485	args[nargs++] = "-D__CFA_DEBUG__";
[b87a5ed]	486	} else {
	487	heading += " (no debug)";
	488	} // if
[51b7345]	489
[417a630]	490	if ( bprefix.length() == 0 ) {
[158b026]	491	switch(path) {
[36de20d]	492	case Installed : bprefix = installlibdir; break;
	493	case BuildTree : bprefix = srcdriverdir ; break;
	494	case Distributed : bprefix = dir(argv[0]) ; break;
	495	} // switch
[b87a5ed]	496	} // if
[36de20d]	497	if ( bprefix[bprefix.length() - 1] != '/' ) bprefix += '/';
	498	Putenv( argv, string("-B=") + bprefix );
[51b7345]	499
[2c60af75]	500	args[nargs++] = "-Xlinker"; // used by backtrace
	501	args[nargs++] = "-export-dynamic";
[6bfe5cc]	502
[b87a5ed]	503	// execute the compilation command
[51b7345]	504
[b87a5ed]	505	args[0] = compiler_path.c_str(); // set compiler command for exec
	506	// find actual name of the compiler independent of the path to it
	507	int p = compiler_path.find_last_of( '/' ); // scan r -> l for first '/'
	508	if ( p == -1 ) {
	509	compiler_name = compiler_path;
	510	} else {
	511	compiler_name = *new string( compiler_path.substr( p + 1 ) );
	512	} // if
[51b7345]	513
[b87a5ed]	514	if ( prefix( compiler_name, "gcc" ) ) { // allow suffix on gcc name
[2c60af75]	515	args[nargs++] = "-no-integrated-cpp";
	516	args[nargs++] = "-Wno-deprecated";
[e35a32b]	517	args[nargs++] = "-Wno-strict-aliasing"; // casting from one type to another
[2c60af75]	518	#ifdef HAVE_CAST_FUNCTION_TYPE
	519	args[nargs++] = "-Wno-cast-function-type";
	520	#endif // HAVE_CAST_FUNCTION_TYPE
[36de20d]	521	if ( ! std_flag && ! x_flag ) {
	522	args[nargs++] = "-std=gnu11"; // default c11, if none specified
[de62360d]	523	} // if
[2c60af75]	524	args[nargs++] = "-fgnu89-inline";
	525	args[nargs++] = "-D__int8_t_defined"; // prevent gcc type-size attributes
[417a630]	526	args[nargs++] = ( *new string( string("-B") + bprefix ) ).c_str();
[b87a5ed]	527	} else {
[e24f13a]	528	cerr << argv[0] << " error, compiler \"" << compiler_name << "\" unsupported." << endl;
[b87a5ed]	529	exit( EXIT_FAILURE );
	530	} // if
[51b7345]	531
[bbb1b35]	532	args[nargs] = nullptr; // terminate
[51b7345]	533
[dffaeac]	534	#ifdef __DEBUG_H__
[b87a5ed]	535	cerr << "nargs: " << nargs << endl;
	536	cerr << "args:" << endl;
[bbb1b35]	537	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[b87a5ed]	538	cerr << " \"" << args[i] << "\"" << endl;
	539	} // for
[1ee048fd]	540	cerr << endl;
[dffaeac]	541	#endif // __DEBUG_H__
[51b7345]	542
[b87a5ed]	543	if ( ! quiet ) {
	544	cerr << "CFA " << "Version " << Version << heading << endl;
	545	if ( help ) {
	546	cerr <<
	547	"-debug\t\t\t: use cfa runtime with debug checking" << endl <<
	548	"-help\t\t\t: print this help message" << endl <<
	549	"-quiet\t\t\t: print no messages from the cfa command" << endl <<
	550	"-CFA\t\t\t: run the cpp preprocessor and the cfa-cpp translator" << endl <<
	551	"-XCFA -cfa-cpp-flag\t: pass next flag as-is to the cfa-cpp translator" << endl <<
	552	"...\t\t\t: any other " << compiler_name << " flags" << endl;
	553	} // if
[51b7345]	554	} // if
	555
[b87a5ed]	556	if ( verbose ) {
	557	if ( argc == 2 ) exit( EXIT_SUCCESS ); // if only the -v flag is specified, do not invoke gcc
[51b7345]	558
[bbb1b35]	559	for ( int i = 0; args[i] != nullptr; i += 1 ) {
[b87a5ed]	560	cerr << args[i] << " ";
	561	} // for
	562	cerr << endl;
	563	} // if
[51b7345]	564
[b87a5ed]	565	if ( ! nonoptarg ) {
	566	cerr << argv[0] << " error, no input files" << endl;
	567	exit( EXIT_FAILURE );
	568	} // if
[51b7345]	569
[b87a5ed]	570	// execute the command and return the result
[51b7345]	571
[36de20d]	572	execvp( args[0], (char * const *)args ); // should not return
[2c60af75]	573	perror( "CFA Translator error: execvp" );
[b87a5ed]	574	exit( EXIT_FAILURE );
[51b7345]	575	} // main
	576
	577	// Local Variables: //
[b87a5ed]	578	// tab-width: 4 //
	579	// mode: c++ //
[51b7345]	580	// compile-command: "make install" //
	581	// End: //

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