digitalmars.D.learn - cpp header bindings
- Rui Justino (288/288) Jul 29 2008 hi
- RCJ (11/18) Jul 29 2008 Rui Justino Wrote:
- Bill Baxter (25/43) Jul 29 2008 Interop with C++ is a fairly new addition to the language, and only in
hi Hive been trying to create a simple interface to a also simple c++ header file. Any help is appreciated since I've been for several days trying to solve this using different approaches but unsuccessfully(D newbie). ---------------------------------------- The header file "thetest.h": #ifndef THETEST_H #define THETEST_H class TheTest { public: TheTest (int); void myfirst ( int myf ); void mysecond ( int myff ); ~TheTest(); private: int p_Myf; int p_Myff; int p_Mytotal; }; ---------------------------------------- The cpp file "thetest.cpp": #include "thetest.h" #include <iostream> using namespace std; TheTest::TheTest (int mytot) { p_Mytotal = mytot; } TheTest::~TheTest() { } void TheTest::myfirst (int myf) { p_Myf = myf; cout << p_Mytotal << endl; cout << p_Myf << endl; } void TheTest::mysecond ( int myff ) { p_Myff = myff; cout << p_Myff << endl; } ------------------------------------------------------------------------------------- The interface created by BCD "thetest.d": /* THIS FILE GENERATED BY bcd.gen */ module bcd.my4.thetest; align(4): public import bcd.bind; public import bcd.my4.thetest; extern (C) void _BCD_delete_7TheTest(void *); extern (C) void *_BCD_new__ZN7TheTestC1Ei(int); extern (C) void _BCD__ZN7TheTest7myfirstEi(void *This, int); extern (C) void _BCD__ZN7TheTest8mysecondEi(void *This, int); extern (C) void _BCD_RI_7TheTest(void *cd, void *dd); extern (C) void _BCD_delete_7TheTest__TheTest_R(void *This); extern (C) void *_BCD_new__ZN7TheTestC1Ei_R(int); class TheTest : bcd.bind.BoundClass { this(ifloat ignore) { super(ignore); } this(ifloat ignore, void *x) { super(ignore); __C_data = x; __C_data_owned = false; } ~this() { if (__C_data && __C_data_owned) _BCD_delete_7TheTest(__C_data); __C_data = null; } this(int _0) { super(cast(ifloat) 0); __C_data = _BCD_new__ZN7TheTestC1Ei(_0); __C_data_owned = true; } void myfirst(int myf) { _BCD__ZN7TheTest7myfirstEi(__C_data, myf); } void mysecond(int myff) { _BCD__ZN7TheTest8mysecondEi(__C_data, myff); } } class TheTest_R : TheTest { ~this() { if (__C_data && __C_data_owned) _BCD_delete_7TheTest__TheTest_R(__C_data); __C_data = null; } this(int _0) { super(cast(ifloat) 0); __C_data = _BCD_new__ZN7TheTestC1Ei_R(_0); __C_data_owned = true; _BCD_RI_7TheTest(__C_data, cast(void *) this); }} ---------------------------------------------------------------------------------------------------------------------- D module "header_tit.d": import bcr = bcd.my4.thetest; void main() { int a=6; int b=7; bcr.TheTest myts = new bcr.TheTest (a+b); //myts.my_first(a); //myts.my_second(b); } ---------------------------------------------------------------------------------------- I then compile this using: g++ thetest.cpp -c #gdmd header_tit.d thetest.o -L-lstdc++ header_tit.o: In function `_Dmain': header_tit.d:(.text+0x20): undefined reference to `_D7thetest7TheTest7__ClassZ' header_tit.d:(.text+0x2f): undefined reference to `_D7thetest7TheTest5_ctorMUiZC7thetest7TheTest' collect2: ld returned 1 exit status ---------------------------------------------------------------------------------------- Even with an interface create by me for d header file file "thetest.d": extern (C) { class TheTest { public: this (int); void myfirst ( int myf ); void mysecond ( int myff ); ~this(); private: int p_Myf; int p_Myff; int p_Mytotal; }} ---------------------------------------------------------------------------------------- making the needed changes in header_tit.d the output is the same #gdmd header_tit.d thetest.o -L-lstdc++ header_tit.o: In function `_Dmain': header_tit.d:(.text+0x20): undefined reference to `_D7thetest7TheTest7__ClassZ' header_tit.d:(.text+0x2f): undefined reference to `_D7thetest7TheTest5_ctorMUiZC7thetest7TheTest' collect2: ld returned 1 exit status ---------------------------------------------------------------------------------------- The gdc version (this is a costume gentoo version the last one on svn): #gdc -v Using built-in specs. Target: x86_64-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-4.1.2/work/gcc-4.1.2/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.1.2 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.1.2 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.1.2/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.1.2/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --enable-nls --without-included-gettext --with-system-zlib --disable-checking --disable-werror --enable-secureplt --enable-multilib --disable-libmudflap --disable-libssp --disable-libgcj --enable-languages=c,c++,d,treelang --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu Thread model: posix gcc version 4.1.2 20070214 ( gdc 0.24, using dmd 1.030) (Gentoo 4.1.2 p1.1) Or on debian: hi Hive been trying to create a simple interface to a also simple c++ header file. Any help is appreciated since I've been for several days trying to solve this using different approaches but unsuccessfully. ---------------------------------------- The header file "thetest.h": #ifndef THETEST_H #define THETEST_H class TheTest { public: TheTest (int); void myfirst ( int myf ); void mysecond ( int myff ); ~TheTest(); private: int p_Myf; int p_Myff; int p_Mytotal; }; ---------------------------------------- The cpp file "thetest.cpp": #include "thetest.h" #include <iostream> using namespace std; TheTest::TheTest (int mytot) { p_Mytotal = mytot; } TheTest::~TheTest() { } void TheTest::myfirst (int myf) { p_Myf = myf; cout << p_Mytotal << endl; cout << p_Myf << endl; } void TheTest::mysecond ( int myff ) { p_Myff = myff; cout << p_Myff << endl; } ------------------------------------------------------------------------------------- The interface created by BCD "thetest.d": /* THIS FILE GENERATED BY bcd.gen */ module bcd.my4.thetest; align(4): public import bcd.bind; public import bcd.my4.thetest; extern (C) void _BCD_delete_7TheTest(void *); extern (C) void *_BCD_new__ZN7TheTestC1Ei(int); extern (C) void _BCD__ZN7TheTest7myfirstEi(void *This, int); extern (C) void _BCD__ZN7TheTest8mysecondEi(void *This, int); extern (C) void _BCD_RI_7TheTest(void *cd, void *dd); extern (C) void _BCD_delete_7TheTest__TheTest_R(void *This); extern (C) void *_BCD_new__ZN7TheTestC1Ei_R(int); class TheTest : bcd.bind.BoundClass { this(ifloat ignore) { super(ignore); } this(ifloat ignore, void *x) { super(ignore); __C_data = x; __C_data_owned = false; } ~this() { if (__C_data && __C_data_owned) _BCD_delete_7TheTest(__C_data); __C_data = null; } this(int _0) { super(cast(ifloat) 0); __C_data = _BCD_new__ZN7TheTestC1Ei(_0); __C_data_owned = true; } void myfirst(int myf) { _BCD__ZN7TheTest7myfirstEi(__C_data, myf); } void mysecond(int myff) { _BCD__ZN7TheTest8mysecondEi(__C_data, myff); } } class TheTest_R : TheTest { ~this() { if (__C_data && __C_data_owned) _BCD_delete_7TheTest__TheTest_R(__C_data); __C_data = null; } this(int _0) { super(cast(ifloat) 0); __C_data = _BCD_new__ZN7TheTestC1Ei_R(_0); __C_data_owned = true; _BCD_RI_7TheTest(__C_data, cast(void *) this); } } ---------------------------------------------------------------------------------------------------------------------- D module "header_tit.d": import bcr = bcd.my4.thetest; void main() { int a=6; int b=7; bcr.TheTest myts = new bcr.TheTest (a+b); //myts.my_first(a); //myts.my_second(b); } ---------------------------------------------------------------------------------------- I then compile this using: g++ thetest.cpp -c #gdmd header_tit.d thetest.o -L-lstdc++ header_tit.o: In function `_Dmain': header_tit.d:(.text+0x20): undefined reference to `_D7thetest7TheTest7__ClassZ' header_tit.d:(.text+0x2f): undefined reference to `_D7thetest7TheTest5_ctorMUiZC7thetest7TheTest' collect2: ld returned 1 exit status ---------------------------------------------------------------------------------------- Even with an interface create by me for d header file file "thetest.d": extern (C) { class TheTest { public: this (int); void myfirst ( int myf ); void mysecond ( int myff ); ~this(); private: int p_Myf; int p_Myff; int p_Mytotal; }} ---------------------------------------------------------------------------------------- making the needed changes in header_tit.d the output is the same #gdmd header_tit.d thetest.o -L-lstdc++ header_tit.o: In function `_Dmain': header_tit.d:(.text+0x20): undefined reference to `_D7thetest7TheTest7__ClassZ' header_tit.d:(.text+0x2f): undefined reference to `_D7thetest7TheTest5_ctorMUiZC7thetest7TheTest' collect2: ld returned 1 exit status ---------------------------------------------------------------------------------------- The gdc version: #gdc -v Using built-in specs. Target: x86_64-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-4.1.2/work/gcc-4.1.2/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.1.2 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.1.2 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.1.2/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.1.2/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --enable-nls --without-included-gettext --with-system-zlib --disable-checking --disable-werror --enable-secureplt --enable-multilib --disable-libmudflap --disable-libssp --disable-libgcj --enable-languages=c,c++,d,treelang --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu Thread model: posix gcc version 4.1.2 20070214 ( gdc 0.24, using dmd 1.030) (Gentoo 4.1.2 p1.1) +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #gdc -v Using built-in specs. Target: i486-linux-gnu Configured with: ../src/configure -v --enable-languages=c,c++,d --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.1.3 --program-suffix=-4.1 --enable-__cxa_atexit --enable-clocale=gnu --disable-libmudflap --enable-checking=release i486-linux-gnu Thread model: posix gcc version 4.1.3 20080623 (prerelease gdc 0.25 20080419, using dmd 1.024) (Debian 0.25-20080616-4.1.2-23) any comment is appreciated. sorry for a so long post
Jul 29 2008
Rui Justino Wrote:
Well once more sorry for the very long post.
Let me try to clarify the problem. I'm trying to create an interface from cpp
to d with the following files.
./bcd/my4/thetest.d
./thetest.h
./thetest.cpp
./thetest.d
./header_tit.d
cpp files are working, but when i try to create bindings to that header file i
get to a point were i receive the same error using 2 different approaches. For
the binding there are two files, one created by BCD and the other by h2d
("./thetest.d" and "./bcd/my4/thetest.d").
With this 2 different approaches I receive the same exact error message, in 2
different versions of GDC.
I would be grateful if some one could show me my error.
----------------------------------------------------------------------------------------
#gdmd header_tit.d thetest.o -L-lstdc++
header_tit.o: In function `_Dmain':
header_tit.d:(.text+0x20): undefined reference to `_D7thetest7TheTest7__ClassZ'
header_tit.d:(.text+0x2f): undefined reference to
`_D7thetest7TheTest5_ctorMUiZC7thetest7TheTest'
collect2: ld returned 1 exit status
----------------------------------------------------------------------------------------
Jul 29 2008
"Bill Baxter" <wbaxter gmail.com>
Interop with C++ is a fairly new addition to the language, and only in
D2 I believe. I don't think either bcd or htod know how to handle
C++. So they're not likely to work.
In your hand-wrapping of the C++ you do this:
"""
extern (C) {
class TheTest
{
public:
this (int);
void myfirst ( int myf );
void mysecond ( int myff );
~this();
private:
int p_Myf;
int p_Myff;
int p_Mytotal;
}}
"""
Which has little chance of working since classes don't have any
meaning in C. It might work using extern(C++) with a D2 compiler.
I've not done much with D2, though (no Tango, no DWT), so I couldn't
say for sure.
--bb
On Wed, Jul 30, 2008 at 2:33 PM, RCJ <rmcjustino gmail.com> wrote:
Rui Justino Wrote:
Well once more sorry for the very long post.
Let me try to clarify the problem. I'm trying to create an interface from cpp
to d with the following files.
./bcd/my4/thetest.d
./thetest.h
./thetest.cpp
./thetest.d
./header_tit.d
cpp files are working, but when i try to create bindings to that header file i
get to a point were i receive the same error using 2 different approaches. For
the binding there are two files, one created by BCD and the other by h2d
("./thetest.d" and "./bcd/my4/thetest.d").
With this 2 different approaches I receive the same exact error message, in 2
different versions of GDC.
I would be grateful if some one could show me my error.
----------------------------------------------------------------------------------------
#gdmd header_tit.d thetest.o -L-lstdc++
header_tit.o: In function `_Dmain':
header_tit.d:(.text+0x20): undefined reference to `_D7thetest7TheTest7__ClassZ'
header_tit.d:(.text+0x2f): undefined reference to
`_D7thetest7TheTest5_ctorMUiZC7thetest7TheTest'
collect2: ld returned 1 exit status
----------------------------------------------------------------------------------------
Jul 29 2008