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Diffstat (limited to 'jam-files/engine/jam.c')
| -rw-r--r-- | jam-files/engine/jam.c | 632 |
1 files changed, 632 insertions, 0 deletions
diff --git a/jam-files/engine/jam.c b/jam-files/engine/jam.c new file mode 100644 index 00000000..e11d082b --- /dev/null +++ b/jam-files/engine/jam.c @@ -0,0 +1,632 @@ +/* + * /+\ + * +\ 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. + */ + +/* This file is ALSO: + * Copyright 2001-2004 David Abrahams. + * Distributed under the Boost Software License, Version 1.0. + * (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) + */ + +/* + * 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 + * hdrmacro.c - handle header file parsing for filename macro definitions + * 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 + */ + + +#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 "rules.h" +#include "newstr.h" +#include "scan.h" +#include "timestamp.h" +#include "make.h" +#include "strings.h" +#include "expand.h" +#include "filesys.h" +#include "output.h" + +/* Macintosh is "special" */ +#ifdef OS_MAC + #include <QuickDraw.h> +#endif + +/* And UNIX for this. */ +#ifdef unix + #include <sys/utsname.h> + #include <signal.h> +#endif + +struct globs globs = +{ + 0, /* noexec */ + 1, /* jobs */ + 0, /* quitquick */ + 0, /* newestfirst */ + 0, /* pipes action stdout and stderr merged to action output */ +#ifdef OS_MAC + { 0, 0 }, /* debug - suppress tracing output */ +#else + { 0, 1 }, /* debug ... */ +#endif + 0, /* output commands, not run them */ + 0 /* action timeout */ +}; + +/* Symbols to be defined as true for use in Jambase. */ +static 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 + +/* on Win32-LCC */ +#if defined( OS_NT ) && defined( __LCC__ ) + #define use_environ _environ +#endif + +# if defined( __MWERKS__) + #define use_environ _environ + extern char * * _environ; +#endif + +#ifndef use_environ + #define use_environ environ + #if !defined( __WATCOM__ ) && !defined( OS_OS2 ) && !defined( OS_NT ) + extern char **environ; + #endif +#endif + +#if YYDEBUG != 0 + extern int yydebug; +#endif + +#ifndef NDEBUG +static void run_unit_tests() +{ +#if defined( USE_EXECNT ) + extern void execnt_unit_test(); + execnt_unit_test(); +#endif + string_unit_test(); + var_expand_unit_test(); +} +#endif + +int anyhow = 0; + +#ifdef HAVE_PYTHON + extern PyObject * bjam_call ( PyObject * self, PyObject * args ); + extern PyObject * bjam_import_rule ( PyObject * self, PyObject * args ); + extern PyObject * bjam_define_action( PyObject * self, PyObject * args ); + extern PyObject * bjam_variable ( PyObject * self, PyObject * args ); + extern PyObject * bjam_backtrace ( PyObject * self, PyObject * args ); + extern PyObject * bjam_caller ( PyObject * self, PyObject * args ); +#endif + +char *saved_argv0; + +int main( int argc, char * * argv, char * * arg_environ ) +{ + int n; + char * s; + struct bjam_option optv[N_OPTS]; + char const * all = "all"; + int status; + int arg_c = argc; + char * * arg_v = argv; + char const * progname = argv[0]; + + saved_argv0 = argv[0]; + + BJAM_MEM_INIT(); + +# ifdef OS_MAC + InitGraf(&qd.thePort); +# endif + + --argc; + ++argv; + + if ( getoptions( argc, argv, "-:l:d:j:p:f:gs:t:ano:qv", optv ) < 0 ) + { + printf( "\nusage: %s [ options ] targets...\n\n", progname ); + + printf( "-a Build all targets, even if they are current.\n" ); + printf( "-dx Set the debug level to x (0-9).\n" ); + 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( "-lx Limit actions to x number of seconds after which they are stopped.\n" ); + printf( "-n Don't actually execute the updating actions.\n" ); + printf( "-ox Write the updating actions to file x.\n" ); + printf( "-px x=0, pipes action stdout and stderr merged into action output.\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" ); + printf( "--x Option is ignored.\n\n" ); + + exit( EXITBAD ); + } + + /* Version info. */ + if ( ( s = getoptval( optv, 'v', 0 ) ) ) + { + printf( "Boost.Jam " ); + printf( "Version %s. %s.\n", VERSION, OSMINOR ); + printf( " Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc. \n" ); + printf( " Copyright 2001 David Turner.\n" ); + printf( " Copyright 2001-2004 David Abrahams.\n" ); + printf( " Copyright 2002-2008 Rene Rivera.\n" ); + printf( " Copyright 2003-2008 Vladimir Prus.\n" ); + + return EXITOK; + } + + /* Pick up interesting options. */ + if ( ( s = getoptval( optv, 'n', 0 ) ) ) + globs.noexec++, globs.debug[2] = 1; + + if ( ( s = getoptval( optv, 'p', 0 ) ) ) + { + /* Undocumented -p3 (acts like both -p1 -p2) means separate pipe action + * stdout and stderr. + */ + globs.pipe_action = atoi( s ); + if ( ( 3 < globs.pipe_action ) || ( globs.pipe_action < 0 ) ) + { + printf( + "Invalid pipe descriptor '%d', valid values are -p[0..3].\n", + globs.pipe_action ); + exit( EXITBAD ); + } + } + + 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 ); + if (globs.jobs == 0) + { + printf("Invalid value for the '-j' option.\n"); + exit(EXITBAD); + } + } + + if ( ( s = getoptval( optv, 'g', 0 ) ) ) + globs.newestfirst = 1; + + if ( ( s = getoptval( optv, 'l', 0 ) ) ) + globs.timeout = atoi( s ); + + /* Turn on/off debugging */ + for ( n = 0; ( s = getoptval( optv, 'd', n ) ); ++n ) + { + int i; + + /* First -d, turn off defaults. */ + if ( !n ) + for ( i = 0; i < DEBUG_MAX; ++i ) + globs.debug[i] = 0; + + i = atoi( s ); + + if ( ( i < 0 ) || ( i >= DEBUG_MAX ) ) + { + printf( "Invalid debug level '%s'.\n", s ); + continue; + } + + /* n turns on levels 1-n. */ + /* +n turns on level n. */ + if ( *s == '+' ) + globs.debug[i] = 1; + else while ( i ) + globs.debug[i--] = 1; + } + + { + PROFILE_ENTER( MAIN ); + +#ifdef HAVE_PYTHON + { + PROFILE_ENTER( MAIN_PYTHON ); + Py_Initialize(); + { + static PyMethodDef BjamMethods[] = { + {"call", bjam_call, METH_VARARGS, + "Call the specified bjam rule."}, + {"import_rule", bjam_import_rule, METH_VARARGS, + "Imports Python callable to bjam."}, + {"define_action", bjam_define_action, METH_VARARGS, + "Defines a command line action."}, + {"variable", bjam_variable, METH_VARARGS, + "Obtains a variable from bjam's global module."}, + {"backtrace", bjam_backtrace, METH_VARARGS, + "Returns bjam backtrace from the last call into Python."}, + {"caller", bjam_caller, METH_VARARGS, + "Returns the module from which the last call into Python is made."}, + {NULL, NULL, 0, NULL} + }; + + Py_InitModule( "bjam", BjamMethods ); + } + PROFILE_EXIT( MAIN_PYTHON ); + } +#endif + +#ifndef NDEBUG + run_unit_tests(); +#endif +#if YYDEBUG != 0 + if ( DEBUG_PARSE ) + yydebug = 1; +#endif + + /* Set JAMDATE. */ + var_set( "JAMDATE", list_new( L0, outf_time(time(0)) ), VAR_SET ); + + /* Set JAM_VERSION. */ + var_set( "JAM_VERSION", + list_new( list_new( list_new( L0, + newstr( VERSION_MAJOR_SYM ) ), + newstr( VERSION_MINOR_SYM ) ), + newstr( VERSION_PATCH_SYM ) ), + VAR_SET ); + + /* Set JAMUNAME. */ +#ifdef unix + { + struct utsname u; + + if ( uname( &u ) >= 0 ) + { + var_set( "JAMUNAME", + list_new( + list_new( + list_new( + list_new( + list_new( L0, + newstr( u.sysname ) ), + newstr( u.nodename ) ), + newstr( u.release ) ), + newstr( u.version ) ), + newstr( u.machine ) ), VAR_SET ); + } + } +#endif /* unix */ + + /* Load up environment variables. */ + + /* First into the global module, with splitting, for backward + * compatibility. + */ + var_defines( use_environ, 1 ); + + /* Then into .ENVIRON, without splitting. */ + enter_module( bindmodule(".ENVIRON") ); + var_defines( use_environ, 0 ); + exit_module( bindmodule(".ENVIRON") ); + + /* + * Jam defined variables OS & OSPLAT. We load them after environment, so + * that setting OS in environment does not change Jam's notion of the + * current platform. + */ + var_defines( othersyms, 1 ); + + /* Load up variables set on command line. */ + for ( n = 0; ( s = getoptval( optv, 's', n ) ); ++n ) + { + char *symv[2]; + symv[ 0 ] = s; + symv[ 1 ] = 0; + var_defines( symv, 1 ); + enter_module( bindmodule(".ENVIRON") ); + var_defines( symv, 0 ); + exit_module( bindmodule(".ENVIRON") ); + } + + /* Set the ARGV to reflect the complete list of arguments of invocation. + */ + for ( n = 0; n < arg_c; ++n ) + var_set( "ARGV", list_new( L0, newstr( arg_v[n] ) ), VAR_APPEND ); + + /* Initialize built-in rules. */ + load_builtins(); + + /* Add the targets in the command line to the update list. */ + for ( n = 1; n < arg_c; ++n ) + { + if ( arg_v[ n ][ 0 ] == '-' ) + { + char * f = "-:l:d:j:f:gs:t:ano:qv"; + for ( ; *f; ++f ) if ( *f == arg_v[ n ][ 1 ] ) break; + if ( ( f[ 1 ] == ':' ) && ( arg_v[ n ][ 2 ] == '\0' ) ) ++n; + } + else + { + mark_target_for_updating( arg_v[ n ] ); + } + } + + if (!targets_to_update()) + mark_target_for_updating("all"); + + /* Parse ruleset. */ + { + FRAME frame[ 1 ]; + frame_init( frame ); + for ( n = 0; ( s = getoptval( optv, 'f', n ) ); ++n ) + parse_file( s, frame ); + + if ( !n ) + parse_file( "+", frame ); + } + + status = yyanyerrors(); + + /* Manually touch -t targets. */ + for ( n = 0; ( s = getoptval( optv, 't', n ) ); ++n ) + touch_target( 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; + } + + /* The build system may set the PARALLELISM variable to override -j + options. */ + { + LIST *p = L0; + p = var_get ("PARALLELISM"); + if (p) + { + int j = atoi (p->string); + if (j == -1) + { + printf( "Invalid value of PARALLELISM: %s\n", p->string); + } + else + { + globs.jobs = j; + } + } + } + + /* KEEP_GOING overrides -q option. */ + { + LIST *p = L0; + p = var_get ("KEEP_GOING"); + if (p) + { + int v = atoi (p->string); + if (v == 0) + globs.quitquick = 1; + else + globs.quitquick = 0; + } + } + + /* Now make target. */ + { + PROFILE_ENTER( MAIN_MAKE ); + + LIST * targets = targets_to_update(); + if (targets) + { + int targets_count = list_length( targets ); + const char * * targets2 = (const char * *) + BJAM_MALLOC( targets_count * sizeof( char * ) ); + int n = 0; + for ( ; targets; targets = list_next( targets ) ) + targets2[ n++ ] = targets->string; + status |= make( targets_count, targets2, anyhow ); + free( targets ); + } + else + { + status = last_update_now_status; + } + + PROFILE_EXIT( MAIN_MAKE ); + } + + PROFILE_EXIT( MAIN ); + } + + if ( DEBUG_PROFILE ) + profile_dump(); + + /* Widely scattered cleanup. */ + var_done(); + file_done(); + rules_done(); + stamps_done(); + str_done(); + + /* Close cmdout. */ + if ( globs.cmdout ) + fclose( globs.cmdout ); + +#ifdef HAVE_PYTHON + Py_Finalize(); +#endif + + BJAM_MEM_CLOSE(); + + return status ? EXITBAD : EXITOK; +} + +#if defined(_WIN32) +#include <windows.h> +char *executable_path(char *argv0) { + char buf[1024]; + DWORD ret = GetModuleFileName(NULL, buf, sizeof(buf)); + if (ret == 0 || ret == sizeof(buf)) return NULL; + return strdup (buf); +} +#elif defined(__APPLE__) /* Not tested */ +#include <mach-o/dyld.h> +char *executable_path(char *argv0) { + char buf[1024]; + uint32_t size = sizeof(buf); + int ret = _NSGetExecutablePath(buf, &size); + if (ret != 0) return NULL; + return strdup(buf); +} +#elif defined(sun) || defined(__sun) /* Not tested */ +#include <stdlib.h> + +char *executable_path(char *argv0) { + return strdup(getexecname()); +} +#elif defined(__FreeBSD__) +#include <sys/sysctl.h> +char *executable_path(char *argv0) { + int mib[4]; + mib[0] = CTL_KERN; + mib[1] = KERN_PROC; + mib[2] = KERN_PROC_PATHNAME; + mib[3] = -1; + char buf[1024]; + size_t size = sizeof(buf); + sysctl(mib, 4, buf, &size, NULL, 0); + if (size == 0 || size == sizeof(buf)) return NULL; + return strndup(buf, size); +} +#elif defined(__linux__) +#include <unistd.h> +char *executable_path(char *argv0) { + char buf[1024]; + ssize_t ret = readlink("/proc/self/exe", buf, sizeof(buf)); + if (ret == 0 || ret == sizeof(buf)) return NULL; + return strndup(buf, ret); +} +#else +char *executable_path(char *argv0) { + /* If argv0 is absolute path, assume it's the right absolute path. */ + if (argv0[0] == "/") + return strdup(argv0); + return NULL; +} +#endif |