diff options
Diffstat (limited to 'libbuild2/cc/pkgconfig.cxx')
| -rw-r--r-- | libbuild2/cc/pkgconfig.cxx | 104 |
1 files changed, 79 insertions, 25 deletions
diff --git a/libbuild2/cc/pkgconfig.cxx b/libbuild2/cc/pkgconfig.cxx index 29de44f..1642180 100644 --- a/libbuild2/cc/pkgconfig.cxx +++ b/libbuild2/cc/pkgconfig.cxx @@ -1730,26 +1730,78 @@ namespace build2 // If this is the common .pc file, then we only look in the group. // Otherwise, in the member and the group. // + // To allow setting different values for the for-install and + // development build cases (required when a library comes with + // additional "assets"), we recognize the special .for_install + // variable name suffix: if there is a both <prefix>.<name> and + // <prefix>.<name>.for_install variables, then here we take the + // value from the latter. Note that we don't consider just + // <prefix>.for_install as special (so it's available to the user). + // // We only expect a handful of variables so let's use a vector and // linear search instead of a map. // - using binding = pair<const variable*, const value*>; + struct binding + { + const string* name; // Name to be saved (without .for_install). + const variable* var; // Actual variable (potentially .for_install). + const value* val; // Actual value. + }; vector<binding> vars; - auto append = [&pfx, &vars] (const target& t, bool dup) + auto append = [this, + &l, &pfx, &vars, + tmp = string ()] (const target& t, bool dup) mutable { for (auto p (t.vars.lookup_namespace (pfx)); p.first != p.second; ++p.first) { - const variable& var (p.first->first); + const variable* var (&p.first->first.get ()); + + // Handle .for_install. + // + // The plan is as follows: if this is .for_install, then just + // verify we also have the value without the suffix and skip + // it. Otherwise, check if there also the .for_install variant + // and if so, use that instead. While we could probably do this + // more efficiently by remembering what we saw in vars, this is + // not performance-sensitive and so we keep it simple for now. + // + const string* name; + { + const string& v (var->name); + size_t n (v.size ()); + + if (n > pfx.size () + 1 + 12 && // <prefix>..for_install + v.compare (n - 12, 12, ".for_install") == 0) + { + tmp.assign (v, 0, n - 12); + + if (t.vars.find (tmp) == t.vars.end ()) + fail << v << " variant without " << tmp << " in library " + << l; + + continue; + } + else + { + name = &v; + + tmp = v; tmp += ".for_install"; + + auto i (t.vars.find (tmp)); + if (i != t.vars.end ()) + var = &i->first.get (); + } + } if (dup) { if (find_if (vars.begin (), vars.end (), - [&var] (const binding& p) + [name] (const binding& p) { - return p.first == &var; + return *p.name == *name; }) != vars.end ()) continue; } @@ -1757,10 +1809,10 @@ namespace build2 // Re-lookup the value in order to apply target type/pattern // specific prepends/appends. // - lookup l (t[var]); + lookup l (t[*var]); assert (l.defined ()); - vars.emplace_back (&var, l.value); + vars.push_back (binding {name, var, l.value}); } }; @@ -1781,46 +1833,48 @@ namespace build2 for (const binding& b: vars) { - const string& n (b.first->name); - const value& v (*b.second); + const variable& var (*b.var); + const value& val (*b.val); // There is no notion of NULL in pkg-config variables and it's // probably best not to conflate them with empty. // - if (v.null) - fail << "null value in exported variable " << n + if (val.null) + fail << "null value in exported variable " << var << " of library " << l; - if (v.type == nullptr) - fail << "untyped value in exported variable " << n + if (val.type == nullptr) + fail << "untyped value in exported variable " << var << " of library " << l; // Tighten this to only a sensible subset of types (see // parsing/serialization code for some of the potential problems). // - if (!metadata_type (v.type->name).first) - fail << "unsupported value type " << v.type->name - << " in exported variable " << n << " of library " << l; + if (!metadata_type (val.type->name).first) + fail << "unsupported value type " << val.type->name + << " in exported variable " << var << " of library " << l; - os << ' ' << n << '/' << v.type->name; + os << " \\" << endl + << *b.name << '/' << val.type->name; } - os << endl; + os << endl + << endl; // Now the variables themselves. // string s; // Reuse the buffer. for (const binding& b: vars) { - const string& n (b.first->name); - const value& v (*b.second); + const variable& var (*b.var); + const value& val (*b.val); names ns; - names_view nv (reverse (v, ns)); + names_view nv (reverse (val, ns)); - os << n << " ="; + os << *b.name << " ="; - auto append = [&l, &n, &s] (const name& v) + auto append = [&l, &var, &s] (const name& v) { if (v.simple ()) s += v.value; @@ -1831,7 +1885,7 @@ namespace build2 // check but let's keep it for good measure. // fail << "simple or directory value expected instead of '" - << v << "' in exported variable " << n << " of library " + << v << "' in exported variable " << var << " of library " << l; }; @@ -1850,7 +1904,7 @@ namespace build2 s += i->pair; append (*++i); #else - fail << "pair in exported variable " << n << " of library " + fail << "pair in exported variable " << var << " of library " << l; #endif } |