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