/* * /+\ * +\ Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc. * \+/ * * This file is part of jam. * * License is hereby granted to use this software and distribute it * freely, as long as this copyright notice is retained and modifications * are clearly marked. * * ALL WARRANTIES ARE HEREBY DISCLAIMED. */ /* * jam.c - make redux * * See Jam.html for usage information. * * These comments document the code. * * The top half of the code is structured such: * * jam * / | \ * +---+ | \ * / | \ * jamgram option \ * / | \ \ * / | \ \ * / | \ | * scan | compile make * | | / | \ / | \ * | | / | \ / | \ * | | / | \ / | \ * jambase parse | rules search make1 * | | | \ * | | | \ * | | | \ * builtins timestamp command execute * | * | * | * filesys * * * The support routines are called by all of the above, but themselves * are layered thus: * * variable|expand * / | | | * / | | | * / | | | * lists | | pathsys * \ | | * \ | | * \ | | * newstr | * \ | * \ | * \ | * hash * * Roughly, the modules are: * * builtins.c - jam's built-in rules * command.c - maintain lists of commands * compile.c - compile parsed jam statements * execunix.c - execute a shell script on UNIX * execvms.c - execute a shell script, ala VMS * expand.c - expand a buffer, given variable values * file*.c - scan directories and archives on * * hash.c - simple in-memory hashing routines * headers.c - handle #includes in source files * jambase.c - compilable copy of Jambase * jamgram.y - jam grammar * lists.c - maintain lists of strings * make.c - bring a target up to date, once rules are in place * make1.c - execute command to bring targets up to date * newstr.c - string manipulation routines * option.c - command line option processing * parse.c - make and destroy parse trees as driven by the parser * path*.c - manipulate file names on * * hash.c - simple in-memory hashing routines * regexp.c - Henry Spencer's regexp * rules.c - access to RULEs, TARGETs, and ACTIONs * scan.c - the jam yacc scanner * search.c - find a target along $(SEARCH) or $(LOCATE) * timestamp.c - get the timestamp of a file or archive member * variable.c - handle jam multi-element variables * * 05/04/94 (seiwald) - async multiprocess (-j) support * 02/08/95 (seiwald) - -n implies -d2. * 02/22/95 (seiwald) - -v for version info. * 09/11/00 (seiwald) - PATCHLEVEL folded into VERSION. * 01/10/01 (seiwald) - pathsys.h split from filesys.h * 01/21/02 (seiwald) - new -q to quit quickly on build failure * 03/16/02 (seiwald) - support for -g (reorder builds by source time) * 09/19/02 (seiwald) - new -d displays * 10/22/02 (seiwald) - list_new() now does its own newstr()/copystr() * 11/04/02 (seiwald) - const-ing for string literals */ # include "jam.h" # include "option.h" # include "patchlevel.h" /* These get various function declarations. */ # include "lists.h" # include "parse.h" # include "variable.h" # include "compile.h" # include "builtins.h" # include "jcache.h" # include "rules.h" # include "newstr.h" # include "scan.h" # include "timestamp.h" # include "make.h" /* Macintosh is "special" */ # ifdef OS_MAC # include # endif /* And UNIX for this */ # ifdef unix # include # endif struct globs globs = { 0, /* noexec */ 1, /* jobs */ 0, /* quitquick */ 0, /* newestfirst */ # ifdef OS_MAC { 0 }, /* display - suppress actions output */ # else { 0, 1 }, /* display actions */ # endif 0, /* output compilation db here */ 0 /* output commands, not run them */ } ; /* Symbols to be defined as true for use in Jambase */ static const char *othersyms[] = { OSMAJOR, OSMINOR, OSPLAT, JAMVERSYM, 0 } ; /* Known for sure: * mac needs arg_enviro * OS2 needs extern environ */ # ifdef OS_MAC # define use_environ arg_environ # ifdef MPW QDGlobals qd; # endif # endif # ifndef use_environ # define use_environ environ # if !defined( __WATCOM__ ) && !defined( OS_OS2 ) && !defined( OS_NT ) extern char **environ; # endif # endif int main( int argc, char **argv, char **arg_environ ) { int n; const char *s; struct option optv[N_OPTS]; const char *all = "all"; int anyhow = 0; int status; # ifdef OS_MAC InitGraf(&qd.thePort); # endif argc--, argv++; if( ( n = getoptions( argc, argv, "d:j:f:gs:t:ano:cqv", optv ) ) < 0 ) { printf( "\nusage: jam [ options ] targets...\n\n" ); printf( "-a Build all targets, even if they are current.\n" ); printf( "-dx Display (a)actions (c)causes (d)dependencies\n" ); printf( " (m)make tree (x)commands (0-9) debug levels.\n" ); # ifdef OPT_RULE_PROFILING_EXT printf( " (p)profile rules.\n" ); # endif printf( "-fx Read x instead of Jambase.\n" ); printf( "-g Build from newest sources first.\n" ); printf( "-jx Run up to x shell commands concurrently.\n" ); printf( "-n Don't actually execute the updating actions.\n" ); printf( "-ox Write the updating actions to file x.\n" ); printf( "-c Output JSON compilation database to compile_commands.json.\n" ); printf( "-q Quit quickly as soon as a target fails.\n" ); printf( "-sx=y Set variable x=y, overriding environment.\n" ); printf( "-tx Rebuild x, even if it is up-to-date.\n" ); printf( "-v Print the version of jam and exit.\n\n" ); exit( EXITBAD ); } argc -= n, argv += n; /* Version info. */ if( ( s = getoptval( optv, 'v', 0 ) ) ) { printf( "Jam %s. %s. ", VERSION, OSMINOR ); printf( "Copyright 1993-2002 Christopher Seiwald.\n" ); return EXITOK; } /* Pick up interesting options */ if( ( s = getoptval( optv, 'n', 0 ) ) ) globs.noexec++, DEBUG_MAKE = DEBUG_MAKEQ = DEBUG_EXEC = 1; if( ( s = getoptval( optv, 'q', 0 ) ) ) globs.quitquick = 1; if( ( s = getoptval( optv, 'a', 0 ) ) ) anyhow++; if( ( s = getoptval( optv, 'j', 0 ) ) ) { globs.jobs = atoi( s ); var_set( "JAMJOBS", list_new( L0, s, 0 ), VAR_SET ); } if( ( s = getoptval( optv, 'g', 0 ) ) ) globs.newestfirst = 1; /* Turn on/off debugging */ for( n = 0; s = getoptval( optv, 'd', n ); n++ ) { int i = atoi( s ); /* First -d, turn off defaults. */ if( !n ) DEBUG_MAKE = DEBUG_MAKEQ = DEBUG_EXEC = 0; /* n turns on levels 1-n */ /* +n turns on level n */ /* c turns on named display c */ if( i < 0 || i >= DEBUG_MAX ) { printf( "Invalid debug level '%s'.\n", s ); } else if( *s == '+' ) { globs.debug[i] = 1; } else if( i ) while( i ) { globs.debug[i--] = 1; } else while( *s ) switch( *s++ ) { case 'a': DEBUG_MAKE = DEBUG_MAKEQ = 1; break; case 'c': DEBUG_CAUSES = 1; break; case 'd': DEBUG_DEPENDS = 1; break; case 'm': DEBUG_MAKEPROG = 1; break; case 'x': DEBUG_EXEC = 1; break; # ifdef OPT_RULE_PROFILING_EXT case 'p': DEBUG_PROFILE_RULES = 1; break; # endif case '0': break; default: printf( "Invalid debug flag '%c'.\n", s[-1] ); } } /* If we're asked to produce a compilation database, open the file. */ if ( ( s = getoptval( optv, 'c', 0 ) ) ) { if ( !( globs.comp_db = fopen( "compile_commands.json", "w" ) ) ) { printf( "Failed to write to 'compile_commands.json'\n"); exit( EXITBAD ); } fprintf(globs.comp_db, "[\n"); } /* Set JAMDATE first */ { char buf[ 128 ]; time_t clock; time( &clock ); strcpy( buf, ctime( &clock ) ); /* Trim newline from date */ if( strlen( buf ) == 25 ) buf[ 24 ] = 0; var_set( "JAMDATE", list_new( L0, buf, 0 ), VAR_SET ); } /* And JAMUNAME */ # ifdef unix { struct utsname u; if( uname( &u ) >= 0 ) { LIST *l = L0; l = list_new( l, u.machine, 0 ); l = list_new( l, u.version, 0 ); l = list_new( l, u.release, 0 ); l = list_new( l, u.nodename, 0 ); l = list_new( l, u.sysname, 0 ); var_set( "JAMUNAME", l, VAR_SET ); } } # endif /* unix */ /* * Jam defined variables OS, OSPLAT */ var_defines( othersyms ); /* load up environment variables */ var_defines( (const char **)use_environ ); #ifdef OPT_JAM_TARGETS_VARIABLE_EXT /* define the variable JAM_TARGETS containing the targets specified on the command line */ { LIST *l = L0; int i; char **targets = argv; int targetCount = argc; if (targetCount == 0) { targets = (char**)&all; targetCount = 1; } for (i = 0; i < targetCount; i++) l = list_new( l, targets[i], 0 ); var_set( "JAM_TARGETS", l, VAR_SET ); } #endif /* Load up variables set on command line. */ for( n = 0; s = getoptval( optv, 's', n ); n++ ) { const char *symv[2]; symv[0] = s; symv[1] = 0; var_defines( symv ); } /* Initialize built-in rules */ load_builtins(); /* Parse ruleset */ #ifdef OPT_JAMFILE_CACHE_EXT jcache_init(); #endif for( n = 0; s = getoptval( optv, 'f', n ); n++ ) parse_file( s ); if( !n ) parse_file( "+" ); #ifdef OPT_JAMFILE_CACHE_EXT jcache_done(); #endif status = yyanyerrors(); /* Manually touch -t targets */ for( n = 0; s = getoptval( optv, 't', n ); n++ ) touchtarget( s ); /* If an output file is specified, set globs.cmdout to that */ if( s = getoptval( optv, 'o', 0 ) ) { if( !( globs.cmdout = fopen( s, "w" ) ) ) { printf( "Failed to write to '%s'\n", s ); exit( EXITBAD ); } globs.noexec++; } #ifdef OPT_JAM_TARGETS_VARIABLE_EXT /* get value of variable JAM_TARGETS and build the targets */ { LIST *l = var_get( "JAM_TARGETS" ); int targetCount = list_length(l); char **targets; int i; if (targetCount == 0) { /* No targets. Nothing to do. */ exit( EXITOK ); } targets = malloc(targetCount * sizeof(char*)); if (!targets) { printf( "Memory allocation failed!\n" ); exit( EXITBAD ); } for (i = 0; i < targetCount; i++) { targets[i] = (char*)l->string; l = l->next; } argv = targets; argc = targetCount; } #endif /* Now make target */ if( !argc ) status |= make( 1, &all, anyhow ); else status |= make( argc, (const char **)argv, anyhow ); /* Widely scattered cleanup */ var_done(); donerules(); donestamps(); donestr(); /* close cmdout */ if( globs.cmdout ) fclose( globs.cmdout ); /* close compilation database output file */ if ( globs.comp_db ) { fprintf(globs.comp_db, "\n]\n"); fclose( globs.comp_db ); } return status ? EXITBAD : EXITOK; }