+// DoBuildDep - Install/removes packages to satisfy build dependencies /*{{{*/
+// ---------------------------------------------------------------------
+/* This function will look at the build depends list of the given source
+ package and install the necessary packages to make it true, or fail. */
+bool DoBuildDep(CommandLine &CmdL)
+{
+ CacheFile Cache;
+ if (Cache.Open(true) == false)
+ return false;
+
+ if (CmdL.FileSize() <= 1)
+ return _error->Error(_("Must specify at least one package to check builddeps for"));
+
+ // Read the source list
+ pkgSourceList List;
+ if (List.ReadMainList() == false)
+ return _error->Error(_("The list of sources could not be read."));
+
+ // Create the text record parsers
+ pkgRecords Recs(Cache);
+ pkgSrcRecords SrcRecs(List);
+ if (_error->PendingError() == true)
+ return false;
+
+ // Create the download object
+ AcqTextStatus Stat(ScreenWidth,_config->FindI("quiet",0));
+ pkgAcquire Fetcher(&Stat);
+
+ unsigned J = 0;
+ for (const char **I = CmdL.FileList + 1; *I != 0; I++, J++)
+ {
+ string Src;
+ pkgSrcRecords::Parser *Last = FindSrc(*I,Recs,SrcRecs,Src,*Cache);
+ if (Last == 0)
+ return _error->Error(_("Unable to find a source package for %s"),Src.c_str());
+
+ // Process the build-dependencies
+ vector<pkgSrcRecords::Parser::BuildDepRec> BuildDeps;
+ if (Last->BuildDepends(BuildDeps, _config->FindB("APT::Get::Arch-Only",false)) == false)
+ return _error->Error(_("Unable to get build-dependency information for %s"),Src.c_str());
+
+ // Also ensure that build-essential packages are present
+ Configuration::Item const *Opts = _config->Tree("APT::Build-Essential");
+ if (Opts)
+ Opts = Opts->Child;
+ for (; Opts; Opts = Opts->Next)
+ {
+ if (Opts->Value.empty() == true)
+ continue;
+
+ pkgSrcRecords::Parser::BuildDepRec rec;
+ rec.Package = Opts->Value;
+ rec.Type = pkgSrcRecords::Parser::BuildDependIndep;
+ rec.Op = 0;
+ BuildDeps.push_back(rec);
+ }
+
+ if (BuildDeps.size() == 0)
+ {
+ ioprintf(c1out,_("%s has no build depends.\n"),Src.c_str());
+ continue;
+ }
+
+ // Install the requested packages
+ unsigned int ExpectedInst = 0;
+ vector <pkgSrcRecords::Parser::BuildDepRec>::iterator D;
+ pkgProblemResolver Fix(Cache);
+ bool skipAlternatives = false; // skip remaining alternatives in an or group
+ for (D = BuildDeps.begin(); D != BuildDeps.end(); D++)
+ {
+ bool hasAlternatives = (((*D).Op & pkgCache::Dep::Or) == pkgCache::Dep::Or);
+
+ if (skipAlternatives == true)
+ {
+ if (!hasAlternatives)
+ skipAlternatives = false; // end of or group
+ continue;
+ }
+
+ if ((*D).Type == pkgSrcRecords::Parser::BuildConflict ||
+ (*D).Type == pkgSrcRecords::Parser::BuildConflictIndep)
+ {
+ pkgCache::PkgIterator Pkg = Cache->FindPkg((*D).Package);
+ // Build-conflicts on unknown packages are silently ignored
+ if (Pkg.end() == true)
+ continue;
+
+ pkgCache::VerIterator IV = (*Cache)[Pkg].InstVerIter(*Cache);
+
+ /*
+ * Remove if we have an installed version that satisfies the
+ * version criteria
+ */
+ if (IV.end() == false &&
+ Cache->VS().CheckDep(IV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
+ TryToInstall(Pkg,Cache,Fix,true,false,ExpectedInst);
+ }
+ else // BuildDep || BuildDepIndep
+ {
+ pkgCache::PkgIterator Pkg = Cache->FindPkg((*D).Package);
+ if (_config->FindB("Debug::BuildDeps",false) == true)
+ cout << "Looking for " << (*D).Package << "...\n";
+
+ if (Pkg.end() == true)
+ {
+ if (_config->FindB("Debug::BuildDeps",false) == true)
+ cout << " (not found)" << (*D).Package << endl;
+
+ if (hasAlternatives)
+ continue;
+
+ return _error->Error(_("%s dependency for %s cannot be satisfied "
+ "because the package %s cannot be found"),
+ Last->BuildDepType((*D).Type),Src.c_str(),
+ (*D).Package.c_str());
+ }
+
+ /*
+ * if there are alternatives, we've already picked one, so skip
+ * the rest
+ *
+ * TODO: this means that if there's a build-dep on A|B and B is
+ * installed, we'll still try to install A; more importantly,
+ * if A is currently broken, we cannot go back and try B. To fix
+ * this would require we do a Resolve cycle for each package we
+ * add to the install list. Ugh
+ */
+
+ /*
+ * If this is a virtual package, we need to check the list of
+ * packages that provide it and see if any of those are
+ * installed
+ */
+ pkgCache::PrvIterator Prv = Pkg.ProvidesList();
+ for (; Prv.end() != true; Prv++)
+ {
+ if (_config->FindB("Debug::BuildDeps",false) == true)
+ cout << " Checking provider " << Prv.OwnerPkg().Name() << endl;
+
+ if ((*Cache)[Prv.OwnerPkg()].InstVerIter(*Cache).end() == false)
+ break;
+ }
+
+ // Get installed version and version we are going to install
+ pkgCache::VerIterator IV = (*Cache)[Pkg].InstVerIter(*Cache);
+
+ if ((*D).Version[0] != '\0') {
+ // Versioned dependency
+
+ pkgCache::VerIterator CV = (*Cache)[Pkg].CandidateVerIter(*Cache);
+
+ for (; CV.end() != true; CV++)
+ {
+ if (Cache->VS().CheckDep(CV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
+ break;
+ }
+ if (CV.end() == true)
+ if (hasAlternatives)
+ {
+ continue;
+ }
+ else
+ {
+ return _error->Error(_("%s dependency for %s cannot be satisfied "
+ "because no available versions of package %s "
+ "can satisfy version requirements"),
+ Last->BuildDepType((*D).Type),Src.c_str(),
+ (*D).Package.c_str());
+ }
+ }
+ else
+ {
+ // Only consider virtual packages if there is no versioned dependency
+ if (Prv.end() == false)
+ {
+ if (_config->FindB("Debug::BuildDeps",false) == true)
+ cout << " Is provided by installed package " << Prv.OwnerPkg().Name() << endl;
+ skipAlternatives = hasAlternatives;
+ continue;
+ }
+ }
+
+ if (IV.end() == false)
+ {
+ if (_config->FindB("Debug::BuildDeps",false) == true)
+ cout << " Is installed\n";
+
+ if (Cache->VS().CheckDep(IV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
+ {
+ skipAlternatives = hasAlternatives;
+ continue;
+ }
+
+ if (_config->FindB("Debug::BuildDeps",false) == true)
+ cout << " ...but the installed version doesn't meet the version requirement\n";
+
+ if (((*D).Op & pkgCache::Dep::LessEq) == pkgCache::Dep::LessEq)
+ {
+ return _error->Error(_("Failed to satisfy %s dependency for %s: Installed package %s is too new"),
+ Last->BuildDepType((*D).Type),
+ Src.c_str(),
+ Pkg.Name());
+ }
+ }
+
+
+ if (_config->FindB("Debug::BuildDeps",false) == true)
+ cout << " Trying to install " << (*D).Package << endl;
+
+ if (TryToInstall(Pkg,Cache,Fix,false,false,ExpectedInst) == true)
+ {
+ // We successfully installed something; skip remaining alternatives
+ skipAlternatives = hasAlternatives;
+ continue;
+ }
+ else if (hasAlternatives)
+ {
+ if (_config->FindB("Debug::BuildDeps",false) == true)
+ cout << " Unsatisfiable, trying alternatives\n";
+ continue;
+ }
+ else
+ {
+ return _error->Error(_("Failed to satisfy %s dependency for %s: %s"),
+ Last->BuildDepType((*D).Type),
+ Src.c_str(),
+ (*D).Package.c_str());
+ }
+ }
+ }
+
+ Fix.InstallProtect();
+ if (Fix.Resolve(true) == false)
+ _error->Discard();
+
+ // Now we check the state of the packages,
+ if (Cache->BrokenCount() != 0)
+ return _error->Error(_("Build-dependencies for %s could not be satisfied."),*I);
+ }
+
+ if (InstallPackages(Cache, false, true) == false)
+ return _error->Error(_("Failed to process build dependencies"));
+ return true;
+}
+ /*}}}*/
projects / apt.git / blobdiff