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         for(StringList::iterator i=build_info.incpath.begin(); i!=build_info.incpath.end(); ++i)
  45                 *i=(pkg.get_source() / *i).str();
  46         for(StringList::iterator i=build_info.libpath.begin(); i!=build_info.libpath.end(); ++i)
  47                 *i=(pkg.get_source() / *i).str();
  48
  49         if(type==PROGRAM)
  50         {
  51                 string strip=pkg.get_config().get_option("strip").value;
  52                 if(lexical_cast<bool>(strip))
  53                         build_info.ldflags.push_back("-s");
  54         }
  55
  56         if(modular)
  57         {
  58                 build_info.ldflags.push_back("-rdynamic");
  59                 build_info.libs.push_back("dl");
  60         }
  61         else if(module_host)
  62         {
  63                 const PathList &host_src=module_host->get_sources();
  64                 for(PathList::const_iterator i=host_src.begin(); i!=host_src.end(); ++i)
  65                         build_info.incpath.push_back(i->str());
  66         }
  67
  68         build_info.unique();
  69 }
  70
  71 /**
  72 Creates all targets needed for building this component.
  73 */
  74 void Component::create_targets() const
  75 {
  76         Builder &builder=pkg.get_builder();
  77         Target *world=builder.get_target("world");
  78         Target *def_tgt=builder.get_target("default");
  79
  80         PathList files=collect_source_files();
  81
  82         bool build_exe=(type!=HEADERS);
  83
  84         list<ObjectFile *> objs;
  85         list<Target *> inst_tgts;
  86         for(PathList::const_iterator i=files.begin(); i!=files.end(); ++i)
  87         {
  88                 string basename=(*i)[-1];
  89                 string ext=splitext(basename).ext;
  90                 if((ext==".cpp" || ext==".c") && build_exe)
  91                 {
  92                         SourceFile *src=new SourceFile(builder, this, i->str());
  93
  94                         // Compile sources
  95                         ObjectFile *obj=new ObjectFile(builder, *this, *src);
  96                         objs.push_back(obj);
  97                 }
  98                 else if(ext==".h")
  99                 {
 100                         Target *hdr=builder.get_target(i->str());
 101                         if(!hdr)
 102                                 hdr=new Header(builder, this, i->str());
 103
 104                         // Install headers if requested
 105                         if(!install_headers.empty())
 106                                 inst_tgts.push_back(hdr);
 107                 }
 108         }
 109
 110         if(build_exe)
 111         {
 112                 Executable    *exe=0;
 113                 StaticLibrary *slib=0;
 114                 if(type==LIBRARY)
 115                 {
 116                         exe=new SharedLibrary(builder, *this, objs);
 117                         slib=new StaticLibrary(builder, *this, objs);
 118                 }
 119                 else
 120                         exe=new Executable(builder, *this, objs);
 121
 122                 if(&pkg==builder.get_main_package() && deflt)
 123                 {
 124                         def_tgt->add_depend(exe);
 125                         if(slib) def_tgt->add_depend(slib);
 126                 }
 127                 else
 128                 {
 129                         world->add_depend(exe);
 130                         if(slib) world->add_depend(slib);
 131                 }
 132
 133                 if(install)
 134                 {
 135                         inst_tgts.push_back(exe);
 136                         if(slib)
 137                                 inst_tgts.push_back(slib);
 138                 }
 139         }
 140
 141         Target *inst_tgt=builder.get_target("install");
 142         for(TargetList::const_iterator i=inst_tgts.begin(); i!=inst_tgts.end(); ++i)
 143                 inst_tgt->add_depend(new Install(builder, pkg, **i));
 144 }
 145
 146 /**
 147 Collects all files belonging to the component.
 148 */
 149 PathList Component::collect_source_files() const
 150 {
 151         PathList files;
 152         for(PathList::const_iterator i=sources.begin(); i!=sources.end(); ++i)
 153         {
 154                 struct stat st=stat(*i);
 155                 if(S_ISDIR(st.st_mode))
 156                 {
 157                         list<string> sfiles=list_files(*i);
 158                         for(list<string>::iterator j=sfiles.begin(); j!=sfiles.end(); ++j)
 159                                 files.push_back(*i / *j);
 160                 }
 161                 else
 162                         files.push_back(*i);
 163         }
 164
 165         return files;
 166 }
 167
 168
 169 Component::Loader::Loader(Component &c):
 170         comp(c)
 171 {
 172         add("source",          &Loader::source);
 173         add("install",         &Component::install);
 174         add("install_headers", &Component::install_headers);
 175         add("build_info",      &Loader::build_info);
 176         add("require",         &Loader::require);
 177         add("modular",         &Loader::modular);
 178         add("host",            &Loader::host);
 179         add("default",         &Component::deflt);
 180 }
 181
 182 void Component::Loader::source(const string &s)
 183 {
 184         comp.sources.push_back(comp.pkg.get_source()/s);
 185 }
 186
 187 void Component::Loader::require(const string &n)
 188 {
 189         Package *req=comp.pkg.get_builder().get_package(n);
 190         if(req)
 191                 comp.requires.push_back(req);
 192 }
 193
 194 void Component::Loader::modular()
 195 {
 196         if(comp.type!=PROGRAM)
 197                 throw Msp::Exception("Only programs can be modular");
 198         comp.modular=true;
 199 }
 200
 201 void Component::Loader::host(const string &n)
 202 {
 203         const ComponentList &comps=comp.pkg.get_components();
 204         for(ComponentList::const_iterator i=comps.begin(); i!=comps.end(); ++i)
 205                 if(i->get_name()==n)
 206                 {
 207                         if(i->get_type()!=PROGRAM || !i->get_modular())
 208                                 throw Msp::Exception("Module host must be a modular program");
 209                         comp.module_host=&*i;
 210                         return;
 211                 }
 212
 213         throw Msp::Exception("Unknown component");
 214 }
 215
 216 void Component::Loader::build_info()
 217 {
 218         load_sub(comp.build_info);
 219 }