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authorBoris Kolpackov <boris@codesynthesis.com>2021-05-04 12:32:07 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2021-05-04 12:32:07 +0200
commit9d45f82f821f0663a7c21c69c26d93fa0613d48a (patch)
tree19e221c41cc0f43bf3621a8f1a2a21b62470851d /libbuild2
parent8bae6cd94035cd5999ff2d767d91e176939ba203 (diff)
Handle duplicate suppression of multi-element libraries (-l foo)
See GitHub issue #114 for context.
Diffstat (limited to 'libbuild2')
-rw-r--r--libbuild2/cc/common.cxx148
-rw-r--r--libbuild2/cc/common.hxx4
-rw-r--r--libbuild2/cc/compile-rule.cxx9
-rw-r--r--libbuild2/cc/link-rule.cxx122
-rw-r--r--libbuild2/cc/link-rule.hxx60
-rw-r--r--libbuild2/cc/pkgconfig.cxx17
-rw-r--r--libbuild2/cc/windows-rpath.cxx95
7 files changed, 305 insertions, 150 deletions
diff --git a/libbuild2/cc/common.cxx b/libbuild2/cc/common.cxx
index f307b77..dabc007 100644
--- a/libbuild2/cc/common.cxx
+++ b/libbuild2/cc/common.cxx
@@ -32,10 +32,6 @@ namespace build2
// *.export.libs is up-to-date (which will happen automatically if it is
// listed as a prerequisite of this library).
//
- // Storing a reference to library path in proc_lib is legal (it comes
- // either from the target's path or from one of the *.libs variables
- // neither of which should change on this run).
- //
// Note that the order of processing is:
//
// 1. options (x.* then cc.* to be consistent with poptions/loptions)
@@ -47,7 +43,23 @@ namespace build2
// array that contains the current library dependency chain all the way to
// the library passed to process_libraries(). The first element of this
// array is NULL. If this argument is NULL, then this is a library without
- // a target (e.g., -lpthread) and its name is in the second argument.
+ // a target (e.g., -lpthread) and its name is in the second argument
+ // (which could be resolved to an absolute path or passed as an -l<name>
+ // option). Otherwise, (the first argument is not NULL), the second
+ // argument contains the target path (which can be empty in case of the
+ // unknown DLL path).
+ //
+ // Initially, the second argument (library name) was a string (e.g.,
+ // -lpthread) but there are cases where the library is identified with
+ // multiple options, such as -framework CoreServices (there are also cases
+ // like -Wl,--whole-archive -lfoo -lbar -Wl,--no-whole-archive). So now it
+ // is a vector_view that contains a fragment of options (from one of the
+ // *.libs variables) that corresponds to the library (or several
+ // libraries, as in the --whole-archive example above).
+ //
+ // Storing a reference to elements of library name in proc_lib is legal
+ // (they come either from the target's path or from one of the *.libs
+ // variables neither of which should change on this run).
//
// If proc_impl always returns false (that is, we are only interested in
// interfaces), then top_li can be absent. This makes process_libraries()
@@ -69,15 +81,16 @@ namespace build2
bool la,
lflags lf,
const function<bool (const target&,
- bool la)>& proc_impl, // Implementation?
- const function<void (const target* const*, // Can be NULL.
- const string& path, // Library path.
- lflags, // Link flags.
- bool sys)>& proc_lib, // True if system library.
+ bool la)>& proc_impl, // Implementation?
+ const function<void (const target* const*, // Can be NULL.
+ const small_vector<reference_wrapper<
+ const string>, 2>&, // Library "name".
+ lflags, // Link flags.
+ bool sys)>& proc_lib, // System library?
const function<void (const target&,
- const string& type, // cc.type
- bool com, // cc. or x.
- bool exp)>& proc_opt, // *.export.
+ const string& type, // cc.type
+ bool com, // cc. or x.
+ bool exp)>& proc_opt, // *.export.
bool self /*= false*/, // Call proc_lib on l?
small_vector<const target*, 16>* chain) const
{
@@ -196,6 +209,8 @@ namespace build2
// Next process the library itself if requested.
//
+ small_vector<reference_wrapper<const string>, 2> proc_lib_name; // Reuse.
+
if (self && proc_lib)
{
chain->push_back (&l);
@@ -211,7 +226,8 @@ namespace build2
? cast_false<bool> (l.vars[c_system])
: !p.empty () && sys (top_sysd, p.string ()));
- proc_lib (&chain->back (), p.string (), lf, s);
+ proc_lib_name = {p.string ()};
+ proc_lib (&chain->back (), proc_lib_name, lf, s);
}
const scope& bs (t == nullptr || cc ? top_bs : l.base_scope ());
@@ -299,17 +315,79 @@ namespace build2
return s;
};
- auto proc_int = [&l,
- &proc_impl, &proc_lib, &proc_opt, chain,
+ // Determine the length of the library name fragment as well as
+ // whether it is a system library. Possible length values are:
+ //
+ // 1 - just the argument itself (-lpthread)
+ // 2 - argument and next element (-l pthread, -framework CoreServices)
+ // 0 - unrecognized/until the end (-Wl,--whole-archive ...)
+ //
+ auto sense_fragment = [&sys_simple, this] (const string& l) ->
+ pair<size_t, bool>
+ {
+ size_t n;
+ bool s (true);
+
+ if (tsys == "win32-msvc")
+ {
+ if (l[0] == '/')
+ {
+ // Some other option (e.g., /WHOLEARCHIVE:<name>).
+ //
+ n = 0;
+ }
+ else
+ {
+ // Presumably a path.
+ //
+ n = 1;
+ s = sys_simple (l);
+ }
+ }
+ else
+ {
+ if (l[0] == '-')
+ {
+ // -l<name>, -l <name>
+ //
+ if (l[1] == 'l')
+ {
+ n = l.size () == 2 ? 2 : 1;
+ }
+ // -framework <name> (Mac OS)
+ //
+ else if (tsys == "darwin" && l == "-framework")
+ {
+ n = 2;
+ }
+ // Some other option (e.g., -Wl,--whole-archive).
+ //
+ else
+ n = 0;
+ }
+ else
+ {
+ // Presumably a path.
+ //
+ n = 1;
+ s = sys_simple (l);
+ }
+ }
+
+ return make_pair (n, s);
+ };
+
+ auto proc_int = [&l, chain,
+ &proc_impl, &proc_lib, &proc_lib_name, &proc_opt,
&sysd, &usrd,
- &find_sysd, &find_linfo, &sys_simple,
+ &find_sysd, &find_linfo, &sense_fragment,
&bs, a, &li, impl, this] (const lookup& lu)
{
const vector<name>* ns (cast_null<vector<name>> (lu));
if (ns == nullptr || ns->empty ())
return;
- for (auto i (ns->begin ()), e (ns->end ()); i != e; ++i)
+ for (auto i (ns->begin ()), e (ns->end ()); i != e; )
{
const name& n (*i);
@@ -321,7 +399,20 @@ namespace build2
// files).
//
if (proc_lib)
- proc_lib (nullptr, n.value, 0, sys_simple (n.value));
+ {
+ pair<size_t, bool> r (sense_fragment (n.value));
+
+ proc_lib_name.clear ();
+ for (auto e1 (r.first != 0 ? i + r.first : e);
+ i != e && i != e1 && i->simple ();
+ ++i)
+ {
+ proc_lib_name.push_back (i->value);
+ }
+
+ proc_lib (nullptr, proc_lib_name, 0, r.second);
+ continue;
+ }
}
else
{
@@ -380,23 +471,36 @@ namespace build2
t, t.is_a<liba> () || t.is_a<libux> (), 0,
proc_impl, proc_lib, proc_opt, true, chain);
}
+
+ ++i;
}
};
// Process libraries from *.libs (of type strings).
//
- auto proc_imp = [&proc_lib, &sys_simple] (const lookup& lu)
+ auto proc_imp = [&proc_lib, &proc_lib_name,
+ &sense_fragment] (const lookup& lu)
{
const strings* ns (cast_null<strings> (lu));
if (ns == nullptr || ns->empty ())
return;
- for (const string& n: *ns)
+ for (auto i (ns->begin ()), e (ns->end ()); i != e; )
{
// This is something like -lpthread or shell32.lib so should be a
// valid path.
//
- proc_lib (nullptr, n, 0, sys_simple (n));
+ pair<size_t, bool> r (sense_fragment (*i));
+
+ proc_lib_name.clear ();
+ for (auto e1 (r.first != 0 ? i + r.first : e);
+ i != e && i != e1;
+ ++i)
+ {
+ proc_lib_name.push_back (*i);
+ }
+
+ proc_lib (nullptr, proc_lib_name, 0, r.second);
}
};
diff --git a/libbuild2/cc/common.hxx b/libbuild2/cc/common.hxx
index 758c675..77819db 100644
--- a/libbuild2/cc/common.hxx
+++ b/libbuild2/cc/common.hxx
@@ -282,7 +282,9 @@ namespace build2
bool,
lflags,
const function<bool (const target&, bool)>&,
- const function<void (const target* const*, const string&, lflags, bool)>&,
+ const function<void (const target* const*,
+ const small_vector<reference_wrapper<const string>, 2>&,
+ lflags, bool)>&,
const function<void (const target&, const string&, bool, bool)>&,
bool = false,
small_vector<const target*, 16>* = nullptr) const;
diff --git a/libbuild2/cc/compile-rule.cxx b/libbuild2/cc/compile-rule.cxx
index ce586bb..40fb5bb 100644
--- a/libbuild2/cc/compile-rule.cxx
+++ b/libbuild2/cc/compile-rule.cxx
@@ -6193,10 +6193,11 @@ namespace build2
const target*& lt;
} d {a, ht, lt};
- auto lib = [&d] (const target* const* lc,
- const string&,
- lflags,
- bool)
+ auto lib = [&d] (
+ const target* const* lc,
+ const small_vector<reference_wrapper<const string>, 2>&,
+ lflags,
+ bool)
{
// It's unfortunate we have no way to bail out.
//
diff --git a/libbuild2/cc/link-rule.cxx b/libbuild2/cc/link-rule.cxx
index 0ab61b1..b4175d6 100644
--- a/libbuild2/cc/link-rule.cxx
+++ b/libbuild2/cc/link-rule.cxx
@@ -1558,10 +1558,11 @@ namespace build2
return la;
};
- auto lib = [&d, this] (const target* const* lc,
- const string& p,
- lflags f,
- bool)
+ auto lib = [&d, this] (
+ const target* const* lc,
+ const small_vector<reference_wrapper<const string>, 2>& ns,
+ lflags f,
+ bool)
{
// Note: see also make_header_sidebuild().
@@ -1584,15 +1585,15 @@ namespace build2
// From the process_libraries() semantics we know that this callback
// is always called and always after the options callbacks.
//
- appended_library& al (l != nullptr
- ? d.ls.append (*l, d.args.size ())
- : d.ls.append (p, d.args.size ()));
+ appended_library* al (l != nullptr
+ ? &d.ls.append (*l, d.args.size ())
+ : d.ls.append (ns, d.args.size ()));
- if (al.end != appended_library::npos) // Closed.
+ if (al != nullptr && al->end != appended_library::npos) // Closed.
{
// Hoist the elements corresponding to this library to the end.
//
- if (al.begin != al.end)
+ if (al->begin != al->end)
{
// Rotate to the left the subrange starting from the first element
// of this library and until the end so that the element after the
@@ -1600,23 +1601,23 @@ namespace build2
// subrange. We also need to adjust begin/end of libraries
// affected by the rotation.
//
- rotate (d.args.begin () + al.begin,
- d.args.begin () + al.end,
+ rotate (d.args.begin () + al->begin,
+ d.args.begin () + al->end,
d.args.end ());
- size_t n (al.end - al.begin);
+ size_t n (al->end - al->begin);
for (appended_library& al1: d.ls)
{
- if (al1.begin >= al.end)
+ if (al1.begin >= al->end)
{
al1.begin -= n;
al1.end -= n;
}
}
- al.end = d.args.size ();
- al.begin = al.end - n;
+ al->end = d.args.size ();
+ al->begin = al->end - n;
}
return;
@@ -1628,7 +1629,10 @@ namespace build2
// static library.
//
if (d.li.type != otype::a)
- d.args.push_back (p);
+ {
+ for (const string& n: ns)
+ d.args.push_back (n);
+ }
}
else
{
@@ -1742,7 +1746,8 @@ namespace build2
}
done:
- al.end = d.args.size (); // Close.
+ if (al != nullptr)
+ al->end = d.args.size (); // Close.
};
auto opt = [&d, this] (const target& lt,
@@ -1813,17 +1818,21 @@ namespace build2
return la;
};
- auto lib = [&d, this] (const target* const* lc,
- const string& p,
- lflags f,
- bool)
+ auto lib = [&d, this] (
+ const target* const* lc,
+ const small_vector<reference_wrapper<const string>, 2>& ns,
+ lflags f,
+ bool)
{
const file* l (lc != nullptr ? &(*lc)->as<file> () : nullptr);
if (l == nullptr)
{
if (d.li.type != otype::a)
- d.cs.append (p);
+ {
+ for (const string& n: ns)
+ d.cs.append (n);
+ }
}
else
{
@@ -1939,10 +1948,11 @@ namespace build2
bool link;
} d {ls, args, link};
- auto lib = [&d, this] (const target* const* lc,
- const string& f,
- lflags,
- bool sys)
+ auto lib = [&d, this] (
+ const target* const* lc,
+ const small_vector<reference_wrapper<const string>, 2>& ns,
+ lflags,
+ bool sys)
{
const file* l (lc != nullptr ? &(*lc)->as<file> () : nullptr);
@@ -1952,6 +1962,17 @@ namespace build2
if (sys)
return;
+ auto append = [&d] (const string& f)
+ {
+ string o (d.link ? "-Wl,-rpath-link," : "-Wl,-rpath,");
+
+ size_t p (path::traits_type::rfind_separator (f));
+ assert (p != string::npos);
+
+ o.append (f, 0, (p != 0 ? p : 1)); // Don't include trailing slash.
+ d.args.push_back (move (o));
+ };
+
if (l != nullptr)
{
if (!l->is_a<libs> ())
@@ -1965,10 +1986,11 @@ namespace build2
// We handle rpath similar to the compilation case by adding the
// options on the first occurrence and ignoring all the subsequent.
//
- if (find (d.ls.begin (), d.ls.end (), l) != d.ls.end ())
- return;
-
- d.ls.push_back (l);
+ if (find (d.ls.begin (), d.ls.end (), l) == d.ls.end ())
+ {
+ append (ns[0]);
+ d.ls.push_back (l);
+ }
}
else
{
@@ -1977,36 +1999,28 @@ namespace build2
// better than checking for a platform-specific extension (maybe
// we should cache it somewhere).
//
- size_t p (path::traits_type::find_extension (f));
+ for (const string& f: ns)
+ {
+ size_t p (path::traits_type::find_extension (f));
- if (p == string::npos)
- return;
+ if (p == string::npos)
+ return;
- ++p; // Skip dot.
+ ++p; // Skip dot.
- bool c (true);
- const char* e;
+ bool c (true);
+ const char* e;
- if (tclass == "windows") {e = "dll"; c = false;}
- else if (tsys == "darwin") e = "dylib";
- else e = "so";
+ if (tclass == "windows") {e = "dll"; c = false;}
+ else if (tsys == "darwin") e = "dylib";
+ else e = "so";
- if ((c
- ? f.compare (p, string::npos, e)
- : icasecmp (f.c_str () + p, e)) != 0)
- return;
+ if ((c
+ ? f.compare (p, string::npos, e)
+ : icasecmp (f.c_str () + p, e)) == 0)
+ append (f);
+ }
}
-
- // Ok, if we are here then it means we have a non-system, shared
- // library and its absolute path is in f.
- //
- string o (d.link ? "-Wl,-rpath-link," : "-Wl,-rpath,");
-
- size_t p (path::traits_type::rfind_separator (f));
- assert (p != string::npos);
-
- o.append (f, 0, (p != 0 ? p : 1)); // Don't include trailing slash.
- d.args.push_back (move (o));
};
diff --git a/libbuild2/cc/link-rule.hxx b/libbuild2/cc/link-rule.hxx
index baccf8d..33a4f1c 100644
--- a/libbuild2/cc/link-rule.hxx
+++ b/libbuild2/cc/link-rule.hxx
@@ -58,8 +58,14 @@ namespace build2
{
static const size_t npos = size_t (~0);
- uintptr_t l; // Pointer to library target (last bit 0) or to
- // library name (-lpthread or path; last bit 1).
+ // Each appended_library represents either a library target or a
+ // library name fragment up to 2 elements long:
+ //
+ // target | name
+ // --------------------------------------------------
+ const void* l1; // library target | library name[1] or NULL
+ const void* l2; // NULL | library name[0]
+
size_t begin; // First arg belonging to this library.
size_t end; // Past last arg belonging to this library.
};
@@ -73,38 +79,52 @@ namespace build2
appended_library&
append (const file& l, size_t b)
{
- auto p (reinterpret_cast<uintptr_t> (&l));
auto i (find_if (begin (), end (),
- [p] (const appended_library& al)
+ [&l] (const appended_library& al)
{
- return al.l == p;
+ return al.l2 == nullptr && al.l1 == &l;
}));
if (i != end ())
return *i;
- push_back (appended_library {p, b, appended_library::npos});
+ push_back (appended_library {&l, nullptr, b, appended_library::npos});
return back ();
}
- appended_library&
- append (const string& l, size_t b)
+ // Return NULL if no duplicate tracking can be performed for this
+ // library.
+ //
+ appended_library*
+ append (const small_vector<reference_wrapper<const string>, 2>& ns,
+ size_t b)
{
- auto i (find_if (begin (), end (),
- [&l] (const appended_library& al)
- {
- return (al.l & 1) != 0 &&
- l == *reinterpret_cast<const string*> (
- al.l & ~uintptr_t (1));
- }));
+ size_t n (ns.size ());
+
+ if (n > 2)
+ return nullptr;
+
+ auto i (
+ find_if (
+ begin (), end (),
+ [&ns, n] (const appended_library& al)
+ {
+ return al.l2 != nullptr &&
+ *static_cast<const string*> (al.l2) == ns[0].get () &&
+ (n == 2
+ ? (al.l1 != nullptr &&
+ *static_cast<const string*> (al.l1) == ns[1].get ())
+ : al.l1 == nullptr);
+ }));
if (i != end ())
- return *i;
+ return &*i;
- push_back (
- appended_library {
- reinterpret_cast<uintptr_t> (&l) | 1, b, appended_library::npos});
- return back ();
+ push_back (appended_library {
+ n == 2 ? &ns[1].get () : nullptr, &ns[0].get (),
+ b, appended_library::npos});
+
+ return &back ();
}
};
diff --git a/libbuild2/cc/pkgconfig.cxx b/libbuild2/cc/pkgconfig.cxx
index d44b0ec..671a51a 100644
--- a/libbuild2/cc/pkgconfig.cxx
+++ b/libbuild2/cc/pkgconfig.cxx
@@ -1635,11 +1635,11 @@ namespace build2
bool priv (false);
auto imp = [&priv] (const target&, bool la) {return priv && la;};
- auto lib = [&save_library_target,
- &save_library_name] (const target* const* lc,
- const string& p,
- lflags,
- bool)
+ auto lib = [&save_library_target, &save_library_name] (
+ const target* const* lc,
+ const small_vector<reference_wrapper<const string>, 2>& ns,
+ lflags,
+ bool)
{
const file* l (lc != nullptr ? &(*lc)->as<file> () : nullptr);
@@ -1649,7 +1649,12 @@ namespace build2
save_library_target (*l);
}
else
- save_library_name (p); // Something "system'y", save as is.
+ {
+ // Something "system'y", save as is.
+ //
+ for (const string& n: ns)
+ save_library_name (n);
+ }
};
auto opt = [] (const target&, const string&, bool, bool)
diff --git a/libbuild2/cc/windows-rpath.cxx b/libbuild2/cc/windows-rpath.cxx
index 70eef73..7b572df 100644
--- a/libbuild2/cc/windows-rpath.cxx
+++ b/libbuild2/cc/windows-rpath.cxx
@@ -58,10 +58,11 @@ namespace build2
//
auto imp = [] (const target&, bool) {return true;};
- auto lib = [&r] (const target* const* lc,
- const string& f,
- lflags,
- bool sys)
+ auto lib = [&r] (
+ const target* const* lc,
+ const small_vector<reference_wrapper<const string>, 2>& ns,
+ lflags,
+ bool sys)
{
const file* l (lc != nullptr ? &(*lc)->as<file> () : nullptr);
@@ -76,8 +77,13 @@ namespace build2
{
// This can be an "undiscovered" DLL (see search_library()).
//
- if (!l->is_a<libs> () || l->path ().empty ()) // Also covers binless.
- return;
+ if (l->is_a<libs> () && !l->path ().empty ()) // Also covers binless.
+ {
+ timestamp t (l->load_mtime ());
+
+ if (t > r)
+ r = t;
+ }
}
else
{
@@ -91,20 +97,19 @@ namespace build2
//
// Though this can happen on MinGW with direct DLL link...
//
- size_t p (path::traits_type::find_extension (f));
-
- if (p == string::npos || icasecmp (f.c_str () + p + 1, "dll") != 0)
- return;
- }
+ for (const string& f: ns)
+ {
+ size_t p (path::traits_type::find_extension (f));
- // Ok, this is a DLL.
- //
- timestamp t (l != nullptr
- ? l->load_mtime ()
- : mtime (f.c_str ()));
+ if (p != string::npos && icasecmp (f.c_str () + p + 1, "dll") == 0)
+ {
+ timestamp t (mtime (f.c_str ()));
- if (t > r)
- r = t;
+ if (t > r)
+ r = t;
+ }
+ }
+ }
};
for (const prerequisite_target& pt: t.prerequisite_targets[a])
@@ -139,10 +144,11 @@ namespace build2
auto imp = [] (const target&, bool) {return true;};
- auto lib = [&r, &bs] (const target* const* lc,
- const string& f,
- lflags,
- bool sys)
+ auto lib = [&r, &bs] (
+ const target* const* lc,
+ const small_vector<reference_wrapper<const string>, 2>& ns,
+ lflags,
+ bool sys)
{
const file* l (lc != nullptr ? &(*lc)->as<file> () : nullptr);
@@ -161,7 +167,7 @@ namespace build2
: nullptr);
r.insert (
windows_dll {
- f,
+ ns[0],
pdb != nullptr ? &pdb->as<file> ().path ().string () : nullptr,
string ()
});
@@ -169,35 +175,38 @@ namespace build2
}
else
{
- size_t p (path::traits_type::find_extension (f));
-
- if (p != string::npos && icasecmp (f.c_str () + p + 1, "dll") == 0)
+ for (const string& f: ns)
{
- // See if we can find a corresponding .pdb.
- //
- windows_dll wd {f, nullptr, string ()};
- string& pdb (wd.pdb_storage);
-
- // First try "our" naming: foo.dll.pdb.
- //
- pdb = f;
- pdb += ".pdb";
+ size_t p (path::traits_type::find_extension (f));
- if (!exists (path (pdb)))
+ if (p != string::npos && icasecmp (f.c_str () + p + 1, "dll") == 0)
{
- // Then try the usual naming: foo.pdb.
+ // See if we can find a corresponding .pdb.
//
- pdb.assign (f, 0, p);
+ windows_dll wd {f, nullptr, string ()};
+ string& pdb (wd.pdb_storage);
+
+ // First try "our" naming: foo.dll.pdb.
+ //
+ pdb = f;
pdb += ".pdb";
if (!exists (path (pdb)))
- pdb.clear ();
- }
+ {
+ // Then try the usual naming: foo.pdb.
+ //
+ pdb.assign (f, 0, p);
+ pdb += ".pdb";
- if (!pdb.empty ())
- wd.pdb = &pdb;
+ if (!exists (path (pdb)))
+ pdb.clear ();
+ }
- r.insert (move (wd));
+ if (!pdb.empty ())
+ wd.pdb = &pdb;
+
+ r.insert (move (wd));
+ }
}
}
};