source/component.cpp

   1 /* $Id$
   2
   3 This file is part of builder
   4 Copyright © 2006-2007 Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <msp/core/except.h>
   9 #include <msp/fs/dir.h>
  10 #include <msp/fs/stat.h>
  11 #include <msp/fs/utils.h>
  12 #include <msp/strings/lexicalcast.h>
  13 #include "builder.h"
  14 #include "component.h"
  15 #include "header.h"
  16 #include "install.h"
  17 #include "objectfile.h"
  18 #include "sharedlibrary.h"
  19 #include "sourcepackage.h"
  20 #include "staticlibrary.h"
  21 #include "target.h"
  22
  23 using namespace std;
  24 using namespace Msp;
  25
  26 Component::Component(SourcePackage &p, Type t, const string &n):
  27         pkg(p),
  28         type(t),
  29         name(n),
  30         install(false),
  31         module_host(0),
  32         modular(false),
  33         deflt(true)
  34 { }
  35
  36 /**
  37 Prepares the build information for building.
  38 */
  39 void Component::create_build_info()
  40 {
  41         build_info.add(pkg.get_build_info());
  42
  43         for(PackageList::iterator i=requires.begin(); i!=requires.end(); ++i)
  44                 build_info.add((*i)->get_exported_binfo());
  45
  46         for(StringList::iterator i=build_info.incpath.begin(); i!=build_info.incpath.end(); ++i)
  47                 *i=(pkg.get_source() / *i).str();
  48         for(StringList::iterator i=build_info.libpath.begin(); i!=build_info.libpath.end(); ++i)
  49                 *i=(pkg.get_source() / *i).str();
  50
  51         if(pkg.get_library_mode()!=DYNAMIC)
  52         {
  53                 // XXX This may pull in some unnecessary libpaths too.  More thought required.
  54                 PackageList reqs=pkg.collect_requires();
  55                 for(PackageList::iterator i=reqs.begin(); i!=reqs.end(); ++i)
  56                 {
  57                         const BuildInfo &ebi=(*i)->get_exported_binfo();
  58                         build_info.libpath.insert(build_info.libpath.end(), ebi.libpath.begin(), ebi.libpath.end());
  59                 }
  60         }
  61
  62         if(type==PROGRAM)
  63         {
  64                 string strip=pkg.get_config().get_option("strip").value;
  65                 if(lexical_cast<bool>(strip))
  66                         build_info.ldflags.push_back("-s");
  67         }
  68
  69         if(modular)
  70         {
  71                 build_info.ldflags.push_back("-rdynamic");
  72                 build_info.libs.push_back("dl");
  73         }
  74         else if(module_host)
  75         {
  76                 const PathList &host_src=module_host->get_sources();
  77                 for(PathList::const_iterator i=host_src.begin(); i!=host_src.end(); ++i)
  78                         build_info.incpath.push_back(i->str());
  79         }
  80
  81         build_info.unique();
  82 }
  83
  84 /**
  85 Creates all targets needed for building this component.
  86 */
  87 void Component::create_targets() const
  88 {
  89         Builder &builder=pkg.get_builder();
  90         Target *world=builder.get_target("world");
  91         Target *def_tgt=builder.get_target("default");
  92
  93         PathList files=collect_source_files();
  94
  95         bool build_exe=(type!=HEADERS);
  96
  97         list<ObjectFile *> objs;
  98         list<Target *> inst_tgts;
  99         for(PathList::const_iterator i=files.begin(); i!=files.end(); ++i)
 100         {
 101                 string ext=FS::extpart(FS::basename(*i));
 102                 if((ext==".cpp" || ext==".c") && build_exe)
 103                 {
 104                         SourceFile *src=new SourceFile(builder, this, i->str());
 105
 106                         // Compile sources
 107                         ObjectFile *obj=new ObjectFile(builder, *this, *src);
 108                         objs.push_back(obj);
 109                 }
 110                 else if(ext==".h")
 111                 {
 112                         Target *hdr=builder.get_target(i->str());
 113                         if(!hdr)
 114                                 hdr=new Header(builder, this, i->str());
 115
 116                         // Install headers if requested
 117                         if(!install_headers.empty())
 118                                 inst_tgts.push_back(hdr);
 119                 }
 120         }
 121
 122         if(build_exe)
 123         {
 124                 Executable    *exe=0;
 125                 StaticLibrary *slib=0;
 126                 if(type==LIBRARY)
 127                 {
 128                         exe=new SharedLibrary(builder, *this, objs);
 129                         slib=new StaticLibrary(builder, *this, objs);
 130                 }
 131                 else
 132                         exe=new Executable(builder, *this, objs);
 133
 134                 if(&pkg==builder.get_main_package() && deflt)
 135                 {
 136                         def_tgt->add_depend(exe);
 137                         if(slib) def_tgt->add_depend(slib);
 138                 }
 139                 else
 140                 {
 141                         world->add_depend(exe);
 142                         if(slib) world->add_depend(slib);
 143                 }
 144
 145                 if(install)
 146                 {
 147                         inst_tgts.push_back(exe);
 148                         if(slib)
 149                                 inst_tgts.push_back(slib);
 150                 }
 151         }
 152
 153         Target *inst_tgt=builder.get_target("install");
 154         for(TargetList::const_iterator i=inst_tgts.begin(); i!=inst_tgts.end(); ++i)
 155                 inst_tgt->add_depend(new Install(builder, pkg, **i));
 156 }
 157
 158 /**
 159 Collects all files belonging to the component.
 160 */
 161 PathList Component::collect_source_files() const
 162 {
 163         PathList files;
 164         for(PathList::const_iterator i=sources.begin(); i!=sources.end(); ++i)
 165         {
 166                 if(FS::is_dir(*i))
 167                 {
 168                         list<string> sfiles=list_files(*i);
 169                         for(list<string>::iterator j=sfiles.begin(); j!=sfiles.end(); ++j)
 170                                 files.push_back(*i / *j);
 171                 }
 172                 else
 173                         files.push_back(*i);
 174         }
 175
 176         return files;
 177 }
 178
 179
 180 Component::Loader::Loader(Component &c):
 181         comp(c)
 182 {
 183         add("source",          &Loader::source);
 184         add("install",         &Component::install);
 185         add("install_headers", &Component::install_headers);
 186         add("build_info",      &Loader::build_info);
 187         add("require",         &Loader::require);
 188         add("modular",         &Loader::modular);
 189         add("host",            &Loader::host);
 190         add("default",         &Component::deflt);
 191 }
 192
 193 void Component::Loader::source(const string &s)
 194 {
 195         comp.sources.push_back(comp.pkg.get_source()/s);
 196 }
 197
 198 void Component::Loader::require(const string &n)
 199 {
 200         Package *req=comp.pkg.get_builder().get_package(n);
 201         if(req)
 202                 comp.requires.push_back(req);
 203 }
 204
 205 void Component::Loader::modular()
 206 {
 207         if(comp.type!=PROGRAM)
 208                 throw Msp::Exception("Only programs can be modular");
 209         comp.modular=true;
 210 }
 211
 212 void Component::Loader::host(const string &n)
 213 {
 214         const ComponentList &comps=comp.pkg.get_components();
 215         for(ComponentList::const_iterator i=comps.begin(); i!=comps.end(); ++i)
 216                 if(i->get_name()==n)
 217                 {
 218                         if(i->get_type()!=PROGRAM || !i->get_modular())
 219                                 throw Msp::Exception("Module host must be a modular program");
 220                         comp.module_host=&*i;
 221                         return;
 222                 }
 223
 224         throw Msp::Exception("Unknown component");
 225 }
 226
 227 void Component::Loader::build_info()
 228 {
 229         load_sub(comp.build_info);
 230 }