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