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Diffstat (limited to 'build2/cc/msvc.cxx')
| -rw-r--r-- | build2/cc/msvc.cxx | 502 |
1 files changed, 0 insertions, 502 deletions
diff --git a/build2/cc/msvc.cxx b/build2/cc/msvc.cxx deleted file mode 100644 index 886975a..0000000 --- a/build2/cc/msvc.cxx +++ /dev/null @@ -1,502 +0,0 @@ -// file : build2/cc/msvc.cxx -*- C++ -*- -// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd -// license : MIT; see accompanying LICENSE file - -#include <cstring> // strcmp() - -#include <libbuild2/scope.hxx> -#include <libbuild2/target.hxx> -#include <libbuild2/variable.hxx> -#include <libbuild2/algorithm.hxx> -#include <libbuild2/filesystem.hxx> -#include <libbuild2/diagnostics.hxx> - -#include <libbuild2/bin/target.hxx> - -#include <build2/cc/types.hxx> - -#include <build2/cc/common.hxx> -#include <build2/cc/module.hxx> - -using std::strcmp; - -using namespace butl; - -namespace build2 -{ - namespace cc - { - using namespace bin; - - // Translate the target triplet CPU to lib.exe/link.exe /MACHINE option. - // - const char* - msvc_machine (const string& cpu) - { - const char* m (cpu == "i386" || cpu == "i686" ? "/MACHINE:x86" : - cpu == "x86_64" ? "/MACHINE:x64" : - cpu == "arm" ? "/MACHINE:ARM" : - cpu == "arm64" ? "/MACHINE:ARM64" : - nullptr); - - if (m == nullptr) - fail << "unable to translate CPU " << cpu << " to /MACHINE"; - - return m; - } - - // Sanitize cl.exe options. - // - void - msvc_sanitize_cl (cstrings& args) - { - // VC is trying to be "helpful" and warn about one command line option - // overriding another. For example: - // - // cl : Command line warning D9025 : overriding '/W1' with '/W2' - // - // So we have to sanitize the command line and suppress duplicates of - // certain options. - // - // Note also that it is theoretically possible we will treat an option's - // argument as an option. Oh, well, nobody is perfect in the Microsoft - // land. - - // We want to keep the last option seen at the position (relative to - // other options) that it was encountered. If we were to iterate forward - // and keep positions of the enountered options, then we would have had - // to adjust some of them once we remove a duplicate. So instead we are - // going to iterate backwards, in which case we don't even need to keep - // positions, just flags. Note that args[0] is cl.exe itself in which we - // are conveniently not interested. - // - bool W (false); // /WN /Wall /w - - for (size_t i (args.size () - 1); i != 0; --i) - { - auto erase = [&args, &i] () - { - args.erase (args.begin () + i); - }; - - const char* a (args[i]); - - if (*a != '/' && *a != '-') // Not an option. - continue; - - ++a; - - // /WN /Wall /w - // - if ((a[0] == 'W' && digit (a[1]) && a[2] == '\0') || // WN - (a[0] == 'W' && strcmp (a + 1, "all") == 0) || // Wall - (a[0] == 'w' && a[1] == '\0')) // w - { - if (W) - erase (); - else - W = true; - } - } - } - - // Sense whether this is a diagnostics line returning the postion of the - // NNNN code in XNNNN and npos otherwise. - // - size_t - msvc_sense_diag (const string& l, char f) - { - size_t p (l.find (':')); - - // Note that while the C-numbers seems to all be in the ' CNNNN:' form, - // the D ones can be ' DNNNN :', for example: - // - // cl : Command line warning D9025 : overriding '/W3' with '/W4' - // - for (size_t n (l.size ()); - p != string::npos; - p = ++p != n ? l.find_first_of (": ", p) : string::npos) - { - if (p > 5 && - l[p - 6] == ' ' && - l[p - 5] == f && - digit (l[p - 4]) && - digit (l[p - 3]) && - digit (l[p - 2]) && - digit (l[p - 1])) - { - p -= 4; // Start of the error code. - break; - } - } - - return p; - } - - // Filter cl.exe and link.exe noise. - // - void - msvc_filter_cl (ifdstream& is, const path& src) - { - // While it appears VC always prints the source name (event if the - // file does not exist), let's do a sanity check. Also handle the - // command line errors/warnings which come before the file name. - // - for (string l; !eof (getline (is, l)); ) - { - if (l != src.leaf ().string ()) - { - diag_stream_lock () << l << endl; - - if (msvc_sense_diag (l, 'D') != string::npos) - continue; - } - - break; - } - } - - void - msvc_filter_link (ifdstream& is, const file& t, otype lt) - { - // Filter lines until we encounter something we don't recognize. We also - // have to assume the messages can be translated. - // - for (string l; getline (is, l); ) - { - // " Creating library foo\foo.dll.lib and object foo\foo.dll.exp" - // - // This can also appear when linking executables if any of the object - // files export any symbols. - // - if (l.compare (0, 3, " ") == 0) - { - // Use the actual import library name if this is a library (since we - // override this name) and the executable name otherwise (by default - // .lib/.exp are named by replacing the .exe extension). - // - path i ( - lt == otype::s - ? find_adhoc_member<libi> (t)->path ().leaf () - : t.path ().leaf ().base () + ".lib"); - - if (l.find (i.string ()) != string::npos && - l.find (i.base ().string () + ".exp") != string::npos) - continue; - } - - // /INCREMENTAL causes linker to sometimes issue messages but now I - // can't quite reproduce it. - // - - diag_stream_lock () << l << endl; - break; - } - } - - // Extract system header search paths from MSVC. - // - dir_paths config_module:: - msvc_header_search_paths (const process_path&, scope&) const - { - // The compiler doesn't seem to have any built-in paths and all of them - // come from the INCLUDE environment variable. - - // @@ VC: how are we going to do this? E.g., cl-14 does this internally. - // cl.exe /Be prints INCLUDE. - // - // Should we actually bother? INCLUDE is normally used for system - // headers and its highly unlikely we will see an imported library - // that lists one of those directories in pkg-config Cflags value. - // Let's wait and see. - // - return dir_paths (); - } - - // Extract system library search paths from MSVC. - // - dir_paths config_module:: - msvc_library_search_paths (const process_path&, scope&) const - { - // The linker doesn't seem to have any built-in paths and all of them - // come from the LIB environment variable. - - // @@ VC: how are we going to do this? E.g., cl-14 does this internally. - // cl.exe /Be prints LIB. - // - // Should we actually bother? LIB is normally used for system - // libraries and its highly unlikely we will see an explicit import - // for a library from one of those directories. Let's wait and see. - // - return dir_paths (); - } - - // Inspect the file and determine if it is static or import library. - // Return otype::e if it is neither (which we quietly ignore). - // - static otype - library_type (const process_path& ld, const path& l) - { - // The are several reasonably reliable methods to tell whether it is a - // static or import library. One is lib.exe /LIST -- if there aren't any - // .obj members, then it is most likely an import library (it can also - // be an empty static library in which case there won't be any members). - // For an import library /LIST will print a bunch of .dll members. - // - // Another approach is dumpbin.exe (link.exe /DUMP) with /ARCHIVEMEMBERS - // (similar to /LIST) and /LINKERMEMBER (looking for __impl__ symbols or - // _IMPORT_DESCRIPTOR_). - // - // Note also, that apparently it is possible to have a hybrid library. - // - // While the lib.exe approach is probably the simplest, the problem is - // it will require us loading the bin.ar module even if we are not - // building any static libraries. On the other hand, if we are searching - // for libraries then we have bin.ld. So we will use the link.exe /DUMP - // /ARCHIVEMEMBERS. - // - const char* args[] = {ld.recall_string (), - "/DUMP", // Must come first. - "/NOLOGO", - "/ARCHIVEMEMBERS", - l.string ().c_str (), - nullptr}; - - if (verb >= 3) - print_process (args); - - // Link.exe seem to always dump everything to stdout but just in case - // redirect stderr to stdout. - // - process pr (run_start (ld, - args, - 0 /* stdin */, - -1 /* stdout */, - false /* error */)); - - bool obj (false), dll (false); - string s; - - try - { - ifdstream is ( - move (pr.in_ofd), fdstream_mode::skip, ifdstream::badbit); - - while (getline (is, s)) - { - // Detect the one error we should let through. - // - if (s.compare (0, 18, "unable to execute ") == 0) - break; - - // The lines we are interested in seem to have this form (though - // presumably the "Archive member name at" part can be translated): - // - // Archive member name at 746: [...]hello.dll[/][ ]* - // Archive member name at 8C70: [...]hello.lib.obj[/][ ]* - // - size_t n (s.size ()); - - for (; n != 0 && s[n - 1] == ' '; --n) ; // Skip trailing spaces. - - if (n >= 7) // At least ": X.obj" or ": X.dll". - { - --n; - - if (s[n] == '/') // Skip trailing slash if one is there. - --n; - - n -= 3; // Beginning of extension. - - if (s[n] == '.') - { - // Make sure there is ": ". - // - size_t p (s.rfind (':', n - 1)); - - if (p != string::npos && s[p + 1] == ' ') - { - const char* e (s.c_str () + n + 1); - - if (casecmp (e, "obj", 3) == 0) - obj = true; - - if (casecmp (e, "dll", 3) == 0) - dll = true; - } - } - } - } - } - catch (const io_error&) - { - // Presumably the child process failed. Let run_finish() deal with - // that. - } - - if (!run_finish (args, pr, false, s)) - return otype::e; - - if (obj && dll) - { - warn << l << " looks like hybrid static/import library, ignoring"; - return otype::e; - } - - if (!obj && !dll) - { - warn << l << " looks like empty static or import library, ignoring"; - return otype::e; - } - - return obj ? otype::a : otype::s; - } - - template <typename T> - static T* - msvc_search_library (const process_path& ld, - const dir_path& d, - const prerequisite_key& p, - otype lt, - const char* pfx, - const char* sfx, - bool exist, - tracer& trace) - { - // Pretty similar logic to search_library(). - // - assert (p.scope != nullptr); - - const optional<string>& ext (p.tk.ext); - const string& name (*p.tk.name); - - // Assemble the file path. - // - path f (d); - - if (*pfx != '\0') - { - f /= pfx; - f += name; - } - else - f /= name; - - if (*sfx != '\0') - f += sfx; - - const string& e (!ext || p.is_a<lib> () // Only for liba/libs. - ? string ("lib") - : *ext); - - if (!e.empty ()) - { - f += '.'; - f += e; - } - - // Check if the file exists and is of the expected type. - // - timestamp mt (mtime (f)); - - if (mt != timestamp_nonexistent && library_type (ld, f) == lt) - { - // Enter the target. - // - T* t; - common::insert_library (p.scope->ctx, t, name, d, e, exist, trace); - - t->mtime (mt); - t->path (move (f)); - - return t; - } - - return nullptr; - } - - liba* common:: - msvc_search_static (const process_path& ld, - const dir_path& d, - const prerequisite_key& p, - bool exist) const - { - tracer trace (x, "msvc_search_static"); - - liba* r (nullptr); - - auto search = [&r, &ld, &d, &p, exist, &trace] ( - const char* pf, const char* sf) -> bool - { - r = msvc_search_library<liba> ( - ld, d, p, otype::a, pf, sf, exist, trace); - return r != nullptr; - }; - - // Try: - // foo.lib - // libfoo.lib - // foolib.lib - // foo_static.lib - // - return - search ("", "") || - search ("lib", "") || - search ("", "lib") || - search ("", "_static") ? r : nullptr; - } - - libs* common:: - msvc_search_shared (const process_path& ld, - const dir_path& d, - const prerequisite_key& pk, - bool exist) const - { - tracer trace (x, "msvc_search_shared"); - - assert (pk.scope != nullptr); - - libs* s (nullptr); - - auto search = [&s, &ld, &d, &pk, exist, &trace] ( - const char* pf, const char* sf) -> bool - { - if (libi* i = msvc_search_library<libi> ( - ld, d, pk, otype::s, pf, sf, exist, trace)) - { - ulock l ( - insert_library ( - pk.scope->ctx, s, *pk.tk.name, d, nullopt, exist, trace)); - - if (!exist) - { - if (l.owns_lock ()) - { - s->member = i; // We are first. - l.unlock (); - } - else - assert (find_adhoc_member<libi> (*s) == i); - - // Presumably there is a DLL somewhere, we just don't know where. - // - s->mtime (i->mtime ()); - s->path (path ()); - } - } - - return s != nullptr; - }; - - // Try: - // foo.lib - // libfoo.lib - // foodll.lib - // - return - search ("", "") || - search ("lib", "") || - search ("", "dll") ? s : nullptr; - } - } -} |