最近、私は美しい言語 D を学びました。D はより柔軟で、安定した高速プログラムを作成するのに役立ちます。しかし、人気はありません... Dで書かれたコードはほとんどなく、CとC++で書かれたコードが多いためです。したがって、Andrei Alexanderscu の本を読んだ後、著者が D ライブラリの C++ コードへのリンクに関する質問を非常に表面的に説明した後、私はそれを自分で学び、AutomataInterface を実装する CompleteAutomata クラスのインスタンスを返す関数が定義されている D にいくつかのコードを書きました。 C++ コードで:
#ifndef AUTOMATAINTERFACE_H
#define AUTOMATAINTERFACE_H
class AutomataInterface {
public:
virtual ~AutomataInterface() {}
virtual void next() = 0;
virtual void save() = 0;
virtual void restore() = 0;
virtual void zerofile() = 0;
virtual void invert(unsigned long x, unsigned long y) = 0;
virtual int state(unsigned long x, unsigned long y) const = 0;
virtual unsigned long x() const = 0;
virtual unsigned long y() const = 0;
};
AutomataInterface *createAutomata(unsigned long x, unsigned long y);
#endif // AUTOMATAINTERFACE_H
関連する D コード:
import agregator; // this is my own lib
extern(C++) {
interface AutomataInterface {
void next();
void save();
void restore();
void zerofile();
void invert(size_t x, size_t y);
int state(size_t x, size_t y) const;
size_t x() const;
size_t y() const;
}
AutomataInterface createAutomata(ulong x, ulong y) {
return new CompleteAutomata(x, y);
}
}
export class CompleteAutomata : AutomataInterface {
// instance variables...
this(size_t x, size_t y) { /* ... */ }
extern(C++) {
override void next() {
// ...
}
// others overridden interface methods...
}
}
コードを記述した後、次のフラグを使用して、 2 つの異なるコンパイラ (dmdおよび)で D ライブラリをコンパイルしました。gdc
dmd -release -O -lib -odlib -ofliblife.h *.d
また
gdc -frelease -O2 -Wall -c *.d
ar cq lib/liblife.a *.o
ライブラリディレクトリへのパスを追加し（-Lオプション）、ライブラリを直接追加する（オプション）ことにより、受け取った各ライブラリをQtプロジェクトにリンクしようとすると-l。どちらの場合もエラーが発生しました。
最初のdmdケースでは、「`_d_newclass' への未定義の参照」と別のエラーがいくつかあります。
g++ -Wl,-O1 -Wl,-z,relro -o automata main.o mainwindow.o renderarea.o button.o playbutton.o moc_mainwindow.o moc_renderarea.o moc_button.o moc_playbutton.o -L/home/newmen/projects/d/life/lib -llife -lQtGui -lQtCore -lpthread
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1fe_5b0.o): In function `createAutomata(unsigned int, unsigned int)':
complete_automata.d:(.text._Z14createAutomatajj+0x27): undefined reference to `_d_newclass'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.data+0x0): undefined reference to `_D14TypeInfo_Class6__vtblZ'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.data+0x50): undefined reference to `_D6Object7__ClassZ'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.data+0xd0): undefined reference to `_D14TypeInfo_Class6__vtblZ'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.data+0x120): undefined reference to `_D6Object7__ClassZ'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0x68): undefined reference to `_D6object6Object8toStringMFZAya'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0x70): undefined reference to `_D6object6Object6toHashMFNbNeZm'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0x78): undefined reference to `_D6object6Object5opCmpMFC6ObjectZi'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0x80): undefined reference to `_D6object6Object8opEqualsMFC6ObjectZb'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0xf8): undefined reference to `_D6object6Object8toStringMFZAya'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0x100): undefined reference to `_D6object6Object6toHashMFNbNeZm'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0x108): undefined reference to `_D6object6Object5opCmpMFC6ObjectZi'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0x110): undefined reference to `_D6object6Object8opEqualsMFC6ObjectZb'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o): In function `_D17complete_automata16CompleteAutomata6__ctorMFmmZC17complete_automata16CompleteAutomata':
complete_automata.d:(.text._D17complete_automata16CompleteAutomata6__ctorMFmmZC17complete_automata16CompleteAutomata+0x1f): undefined reference to `_d_newclass'
complete_automata.d:(.text._D17complete_automata16CompleteAutomata6__ctorMFmmZC17complete_automata16CompleteAutomata+0x46): undefined reference to `_d_newclass'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o): In function `CompleteAutomata::next()':
complete_automata.d:(.text._ZN16CompleteAutomata4nextEv+0x2f): undefined reference to `_d_newclass'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o): In function `CompleteAutomata::save()':
complete_automata.d:(.text._ZN16CompleteAutomata4saveEv+0x25): undefined reference to `_adDupT'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o): In function `CompleteAutomata::restore()':
complete_automata.d:(.text._ZN16CompleteAutomata7restoreEv+0x33): undefined reference to `_d_newclass'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o): In function `CompleteAutomata::zerofile()':
complete_automata.d:(.text._ZN16CompleteAutomata8zerofileEv+0x2f): undefined reference to `_d_newclass'
/home/newmen/projects/d/life/lib/liblife.a(object_201_8b7.o): In function `no symbol':
/usr/include/dmd/druntime/import/object.di:(.text+0x6): undefined reference to `_Dmodule_ref'
/home/newmen/projects/d/life/lib/liblife.a(object_201_8b7.o):(.data._D12TypeInfo_Axi6__initZ+0x0): undefined reference to `_D14TypeInfo_Array6__vtblZ'
/home/newmen/projects/d/life/lib/liblife.a(object_201_8b7.o): In function `_D46/usr/include/dmd/druntime/import/object.di.5137__arrayZ':
/usr/include/dmd/druntime/import/object.di:(.text._D46/usr/include/dmd/druntime/import/object.di.5137__arrayZ+0x16): undefined reference to `_d_array_bounds'
/home/newmen/projects/d/life/lib/liblife.a(object_201_8b7.o): In function `_D46/usr/include/dmd/druntime/import/object.di.5138__assertFiZv':
/usr/include/dmd/druntime/import/object.di:(.text._D46/usr/include/dmd/druntime/import/object.di.5138__assertFiZv+0x16): undefined reference to `_d_assertm'
/home/newmen/projects/d/life/lib/liblife.a(object_201_8b7.o): In function `_D46/usr/include/dmd/druntime/import/object.di.51315__unittest_failFiZv':
/usr/include/dmd/druntime/import/object.di:(.text._D46/usr/include/dmd/druntime/import/object.di.51315__unittest_failFiZv+0x16): undefined reference to `_d_unittestm'
/home/newmen/projects/d/life/lib/liblife.a(object_203_875.o): In function `no symbol':
/usr/include/dmd/druntime/import/object.di:(.text+0x6): undefined reference to `_Dmodule_ref'
/home/newmen/projects/d/life/lib/liblife.a(object_203_875.o):(.data._D11TypeInfo_xi6__initZ+0x0): undefined reference to `_D14TypeInfo_Const6__vtblZ'
/home/newmen/projects/d/life/lib/liblife.a(object_203_875.o):(.data._D11TypeInfo_xi6__initZ+0x10): undefined reference to `_D10TypeInfo_i6__initZ'
/home/newmen/projects/d/life/lib/liblife.a(object_203_875.o): In function `_D46/usr/include/dmd/druntime/import/object.di.5157__arrayZ':
/usr/include/dmd/druntime/import/object.di:(.text._D46/usr/include/dmd/druntime/import/object.di.5157__arrayZ+0x16): undefined reference to `_d_array_bounds'
/home/newmen/projects/d/life/lib/liblife.a(object_203_875.o): In function `_D46/usr/include/dmd/druntime/import/object.di.5158__assertFiZv':
/usr/include/dmd/druntime/import/object.di:(.text._D46/usr/include/dmd/druntime/import/object.di.5158__assertFiZv+0x16): undefined reference to `_d_assertm'
/home/newmen/projects/d/life/lib/liblife.a(object_203_875.o): In function `_D46/usr/include/dmd/druntime/import/object.di.51515__unittest_failFiZv':
/usr/include/dmd/druntime/import/object.di:(.text._D46/usr/include/dmd/druntime/import/object.di.51515__unittest_failFiZv+0x16): undefined reference to `_d_unittestm'
/home/newmen/projects/d/life/lib/liblife.a(agregator.o): In function `no symbol':
agregator.d:(.text+0x6): undefined reference to `_Dmodule_ref'
/home/newmen/projects/d/life/lib/liblife.a(agregator.o):(.data+0x10): undefined reference to `_D3std6random12__ModuleInfoZ'
/home/newmen/projects/d/life/lib/liblife.a(agregator.o):(.rodata+0x20): undefined reference to `_D14TypeInfo_Class6__vtblZ'
/home/newmen/projects/d/life/lib/liblife.a(agregator.o): In function `_D9agregator7__arrayZ':
agregator.d:(.text._D9agregator7__arrayZ+0x16): undefined reference to `_d_array_bounds'
/home/newmen/projects/d/life/lib/liblife.a(agregator.o): In function `_D9agregator8__assertFiZv':
agregator.d:(.text._D9agregator8__assertFiZv+0x16): undefined reference to `_d_assertm'
/home/newmen/projects/d/life/lib/liblife.a(agregator.o): In function `_D9agregator15__unittest_failFiZv':
agregator.d:(.text._D9agregator15__unittest_failFiZv+0x16): undefined reference to `_d_unittestm'
/home/newmen/projects/d/life/lib/liblife.a(agregator_2_5fd.o):(.data+0x0): undefined reference to `_D14TypeInfo_Class6__vtblZ'
/home/newmen/projects/d/life/lib/liblife.a(agregator_2_5fd.o):(.data+0x50): undefined reference to `_D6Object7__ClassZ'
/home/newmen/projects/d/life/lib/liblife.a(agregator_2_5fd.o):(.rodata+0x48): undefined reference to `_D6object6Object8toStringMFZAya'
...
2 番目のケース (を使用する場合gdc) では、「の複数定義」に関するメッセージが表示されます。
g++ -Wl,-O1 -Wl,-z,relro -o cellular_life main.o mainwindow.o renderarea.o button.o playbutton.o moc_mainwindow.o moc_renderarea.o moc_button.o moc_playbutton.o -L/home/newmen/projects/d/life/lib -llife -lQtGui -lQtCore -lpthread
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `_D17complete_automata16CompleteAutomata7restoreMRZv14SliceAgregator9initValueMxFmmZi':
complete_automata.d:(.text+0x0): multiple definition of `_D17complete_automata16CompleteAutomata7restoreMRZv14SliceAgregator9initValueMxFmmZi'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):complete_automata.d:(.text._D17complete_automata16CompleteAutomata7restoreMRZv14SliceAgregator9initValueMxFmmZi+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `CompleteAutomata::invert(unsigned long long, unsigned long long)':
complete_automata.d:(.text+0x40): multiple definition of `CompleteAutomata::invert(unsigned long long, unsigned long long)'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):complete_automata.d:(.text._ZN16CompleteAutomata6invertEyy+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `CompleteAutomata::state(unsigned long long, unsigned long long) const':
complete_automata.d:(.text+0x60): multiple definition of `CompleteAutomata::state(unsigned long long, unsigned long long) const'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):complete_automata.d:(.text._ZNK16CompleteAutomata5stateEyy+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `CompleteAutomata::x() const':
complete_automata.d:(.text+0x80): multiple definition of `CompleteAutomata::x() const'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):complete_automata.d:(.text._ZNK16CompleteAutomata1xEv+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `CompleteAutomata::y() const':
complete_automata.d:(.text+0xa0): multiple definition of `CompleteAutomata::y() const'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):complete_automata.d:(.text._ZNK16CompleteAutomata1yEv+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `CompleteAutomata::next()':
complete_automata.d:(.text+0x140): multiple definition of `CompleteAutomata::next()'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):complete_automata.d:(.text._ZN16CompleteAutomata4nextEv+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o):(.tbss+0x10): multiple definition of `_D17complete_automata16CompleteAutomata4nextMRZv7changerC7changer7Changer'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.tbss+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `CompleteAutomata::restore()':
complete_automata.d:(.text+0x1b0): multiple definition of `CompleteAutomata::restore()'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):complete_automata.d:(.text._ZN16CompleteAutomata7restoreEv+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o):(.tbss+0x8): multiple definition of `_D17complete_automata16CompleteAutomata7restoreMRZv9agregatorC9agregator9Agregator'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.tbss+0x8): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o):(.data+0x180): multiple definition of `_D_ZN16CompleteAutomata7restoreEv14SliceAgregator7__ClassZ'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.data+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `CompleteAutomata::zerofile()':
complete_automata.d:(.text+0x220): multiple definition of `CompleteAutomata::zerofile()'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):complete_automata.d:(.text._ZN16CompleteAutomata8zerofileEv+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o):(.tbss+0x0): multiple definition of `_D17complete_automata16CompleteAutomata8zerofileMRZv9agregatorC9agregator9Agregator'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.tbss+0x10): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `CompleteAutomata::save()':
complete_automata.d:(.text+0x290): multiple definition of `CompleteAutomata::save()'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):complete_automata.d:(.text._ZN16CompleteAutomata4saveEv+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o):(.data+0x80): multiple definition of `_D17complete_automata16CompleteAutomata7__ClassZ'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.data+0xd0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `_D17complete_automata16CompleteAutomata6__ctorMFmmZC17complete_automata16CompleteAutomata':
complete_automata.d:(.text+0x9b0): multiple definition of `_D17complete_automata16CompleteAutomata6__ctorMFmmZC17complete_automata16CompleteAutomata'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):complete_automata.d:(.text._D17complete_automata16CompleteAutomata6__ctorMFmmZC17complete_automata16CompleteAutomata+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o):(.rodata+0x420): multiple definition of `_D17complete_automata16CompleteAutomata6__vtblZ'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0xf0): first defined here
/usr/bin/ld: Warning: size of symbol `_D17complete_automata16CompleteAutomata6__vtblZ' changed from 104 in /home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o) to 112 in /home/newmen/projects/d/life/lib/liblife.a(complete_automata.o)
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o):(.rodata+0x4a0): multiple definition of `_D17complete_automata16CompleteAutomata6__initZ'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0x90): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o):(.rodata+0x4e0): multiple definition of `_D_ZN16CompleteAutomata7restoreEv14SliceAgregator6__vtblZ'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0x60): first defined here
/usr/bin/ld: Warning: size of symbol `_D_ZN16CompleteAutomata7restoreEv14SliceAgregator6__vtblZ' changed from 48 in /home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o) to 56 in /home/newmen/projects/d/life/lib/liblife.a(complete_automata.o)
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o):(.rodata+0x520): multiple definition of `_D_ZN16CompleteAutomata7restoreEv14SliceAgregator6__initZ'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1ff_675.o):(.rodata+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(agregator.o): In function `_D3std7complex14__T7ComplexTeZ7Complex8toStringMxFMDFAxaZvAyaZAya12__lambda1223MFNbNfAxaZv':
agregator.d:(.text+0xaf): undefined reference to `_D11TypeInfo_Aa6__initZ'
agregator.d:(.text+0xb7): undefined reference to `_d_arrayappendT'
/home/newmen/projects/d/life/lib/liblife.a(agregator.o): In function `_D3std4conv16__T6toImplTiTxkZ6toImplFNaNfxkZi15__dgliteral1389MFNaNfZC6object9Throwable':
agregator.d:(.text+0xc5): undefined reference to `_D3std4conv21ConvOverflowException7__ClassZ'
agregator.d:(.text+0xca): undefined reference to `_d_newclass'
agregator.d:(.text+0xed): undefined reference to `_D3std4conv21ConvOverflowException6__ctorMFAyaAyamZC3std4conv21ConvOverflowException'
/home/newmen/projects/d/life/lib/liblife.a(agregator.o): In function `_D3std6format17__T9getNthIntTxeZ9getNthIntFNaNfkxeZi.part.6':
agregator.d:(.text+0x105): undefined reference to `_D3std6format15FormatException7__ClassZ'
agregator.d:(.text+0x10a): undefined reference to `_d_newclass'
...
そうしようと2日間試みた後...
最近、Phobos (D 標準ライブラリ) をリンク プロセスに追加しようとしています。dmd-lphobos2 フラグの場合と-lgphobos2gdcフラグの場合は対応しています。しかし、それは私を助けません...
dmdリンカー出力を使用する場合:
g++ -Wl,-O1 -Wl,-z,relro -o cellular_life main.o mainwindow.o renderarea.o button.o playbutton.o moc_mainwindow.o moc_renderarea.o moc_button.o moc_playbutton.o -L/home/newmen/projects/d/life/lib -llife -lQtGui -lQtCore -lpthread -lphobos2
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `curl_easy_duphandle@CURL_GNUTLS_3'
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `curl_easy_strerror@CURL_GNUTLS_3'
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `curl_slist_free_all@CURL_GNUTLS_3'
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `curl_global_init@CURL_GNUTLS_3'
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `curl_easy_perform@CURL_GNUTLS_3'
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `curl_easy_init@CURL_GNUTLS_3'
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `curl_easy_pause@CURL_GNUTLS_3'
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `_Dmain'
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `curl_easy_setopt@CURL_GNUTLS_3'
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `curl_slist_append@CURL_GNUTLS_3'
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `curl_global_cleanup@CURL_GNUTLS_3'
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/../../../../lib64/libphobos2.so: undefined reference to `curl_easy_cleanup@CURL_GNUTLS_3'
collect2: error: ld returned 1 exit status
make: *** [cellular_life] Error 1
libcurl-gnutls: の代わりに試してみましたln -s /usr/lib64/libcurl.so.4 /usr/lib64/libcurl-gnutls.so.4。次に、libcurl-gnutls に関するメッセージなしで同じリンクを作成した結果。
リンカー出力を使用する場合gdcは、「複数の定義」について再度話します。
/home/newmen/gcc/bin/g++ -Wl,-O1 -Wl,-z,relro -o cellular_life main.o mainwindow.o renderarea.o button.o playbutton.o moc_mainwindow.o moc_renderarea.o moc_button.o moc_playbutton.o -L/home/newmen/gcc/lib64 -L/home/newmen/projects/d/life/lib -llife -lQtGui -lQtCore -lpthread -lgphobos2
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `_D17complete_automata16CompleteAutomata7restoreMRZv14SliceAgregator9initValueMxFmmZi':
complete_automata.d:(.text+0x0): multiple definition of `_D17complete_automata16CompleteAutomata7restoreMRZv14SliceAgregator9initValueMxFmmZi'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1e3_675.o):complete_automata.d:(.text._D17complete_automata16CompleteAutomata7restoreMRZv14SliceAgregator9initValueMxFmmZi+0x0): first defined here
/home/newmen/projects/d/life/lib/liblife.a(complete_automata.o): In function `CompleteAutomata::invert(unsigned long long, unsigned long long)':
complete_automata.d:(.text+0x40): multiple definition of `CompleteAutomata::invert(unsigned long long, unsigned long long)'
/home/newmen/projects/d/life/lib/liblife.a(complete_automata_1e3_675.o):complete_automata.d:(.text._ZN16CompleteAutomata6invertEyy+0x0): first defined here
...
/home/newmen/gcc/lib64/libgphobos2.a(dmain2.o): In function `main':
/home/newmen/projects/distrib/gcc-4.8.1/x86_64-unknown-linux-gnu/libphobos/libdruntime/../../.././libphobos/libdruntime/rt/dmain2.d:394: multiple definition of `main'
main.o:/home/newmen/projects/d/life/qt_viewer/main.cpp:5: first defined here
/usr/bin/ld: /home/newmen/gcc/lib64/libgphobos2.a(time.o): undefined reference to symbol 'clock_getres@@GLIBC_2.2.5'
/usr/bin/ld: note: 'clock_getres@@GLIBC_2.2.5' is defined in DSO /lib64/librt.so.1 so try adding it to the linker command line
/lib64/librt.so.1: could not read symbols: Invalid operation
collect2: error: ld returned 1 exit status
make: *** [cellular_life] Error 1
最後に librt.so.1 に関するメッセージが表示されます。/usr/lib64 を調べたところ、ライブラリ ファイルが表示されました。
D ライブラリーを C++ コードに接続する方法を教えてください。