Construire un exemple de composant XPCOM Mozilla
https://stackoverflow.com/questions/8873148
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28-10-2019 - |
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J'essaye de créer le composant XPCOM disponible ici: http://mxr.mozilla.org/mozilla-central/source/xpcom/échantillon /
J'ai essayé de le compiler avec mon propre Makefile, afin que ce composant puisse être isolé de toutes les sources de Mozilla.
Voici donc mon arborescence de fichiers:
frinux@Bureau /cygdrive/c/dev/central_sample
$ ls -Rlah
.:
total 57K
d---------+ 1 frinux None 0 Jan 15 21:28 .
d---------+ 1 frinux None 0 Jan 15 20:34 ..
----------+ 1 frinux None 989 Jan 15 21:22 Makefile
----------+ 1 frinux None 2.4K Jan 15 21:05 nsISample.idl
----------+ 1 frinux None 6.0K Jan 15 21:05 nsSample.cpp
----------+ 1 frinux None 5.1K Jan 15 21:06 nsSample.h
----------+ 1 frinux None 2.0K Jan 15 21:06 nsSample.js
----------+ 1 frinux None 131 Jan 15 21:06 nsSample.manifest
----------+ 1 frinux None 4.7K Jan 15 21:06 nsSampleModule.cpp
d---------+ 1 frinux None 0 Jan 15 21:28 program
----------+ 1 frinux None 8.7K Jan 15 21:06 xpconnect-sample.html
./program:
total 16K
d---------+ 1 frinux None 0 Jan 15 21:28 .
d---------+ 1 frinux None 0 Jan 15 21:28 ..
----------+ 1 frinux None 2.7K Jan 15 21:07 Makefile.in
----------+ 1 frinux None 4.5K Jan 15 21:07 nsTestSample.cpp
Voici le makefile que j'ai créé:
CXX = c++
CPPFLAGS += -fno-rtti \
-fno-exceptions \
-shared
# Change this to point at your Gecko SDK directory.
GECKO_SDK_PATH = /cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1
# GCC only define which allows us to not have to #include mozilla-config
# in every .cpp file. If your not using GCC remove this line and add
# #include "mozilla-config.h" to each of your .cpp files.
GECKO_CONFIG_INCLUDE = -include mozilla-config.h
GECKO_DEFINES = -DXPCOM_GLUE -DXP_WIN
GECKO_INCLUDES = -I $(GECKO_SDK_PATH)/include
GECKO_LDFLAGS = -L $(GECKO_SDK_PATH)/lib -lxpcomglue \
-lnspr4 \
-lplds4
FILES = nsSample.cpp nsSampleModule.cpp
TARGET = sample.dll
build:
$(CXX) -Wall -Os -o $(TARGET) $(GECKO_CONFIG_INCLUDE) $(GECKO_DEFINES) $(GECKO_INCLUDES) $(GECKO_LDFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(FILES)
chmod +x $(TARGET)
strip $(TARGET)
clean:
rm $(TARGET)
J'essaye de le construire avec cygwin sous Windows (avec gcc et g ++ installés).
Lors de la compilation, j'obtiens ces erreurs, et après quelques heures de recherche, je ne les comprends toujours pas:
$ make
c++ -Wall -Os -o greenfox.dll -include mozilla-config.h -DXPCOM_GLUE -DXP_WIN -I /cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include -L /cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/lib -lxpcomglue -lnspr4 -lplds4 -fno-rtti -fno-exceptions -shared nsSample.cpp nsSampleModule.cpp
In file included from nsSample.cpp:48:
nsSample.h:44:23: nsISample.h: No such file or directory
In file included from nsSample.cpp:48:
nsSample.h:64: error: expected class-name before '{' token
nsSample.h:76: error: `NS_DECL_ISUPPORTS' does not name a type
In file included from /cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsAlgorithm.h:43,
from /cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsTArray.h:45,
from /cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsStringAPI.h:56,
from /cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsEmbedString.h:43,
from nsSample.cpp:51:
/cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsCharTraits.h:143: error: an explicit specialization must be preceded by 'template <>'
/cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsCharTraits.h:433: error: an explicit specialization must be preceded by 'template <>'
/cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsCharTraits.h:727: error: an explicit specialization must be preceded by 'template <>'
/cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsCharTraits.h:763: error: an explicit specialization must be preceded by 'template <>'
/cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsCharTraits.h:828: error: an explicit specialization must be preceded by 'template <>'
/cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsCharTraits.h:840: error: an explicit specialization must be preceded by 'template <>'
nsSample.cpp:61: error: no `nsSampleImpl::~nsSampleImpl()' member function declared in class `nsSampleImpl'
nsSample.cpp:81: error: no `nsrefcnt nsSampleImpl::AddRef()' member function declared in class `nsSampleImpl'
nsSample.cpp: In member function `nsrefcnt nsSampleImpl::AddRef()':
nsSample.cpp:81: error: `mRefCnt' undeclared (first use this function)
nsSample.cpp:81: error: (Each undeclared identifier is reported only once for each function it appears in.)
nsSample.cpp: At global scope:
nsSample.cpp:81: error: no `nsrefcnt nsSampleImpl::Release()' member function declared in class `nsSampleImpl'
nsSample.cpp: In member function `nsrefcnt nsSampleImpl::Release()':
nsSample.cpp:81: error: `mRefCnt' undeclared (first use this function)
nsSample.cpp: At global scope:
nsSample.cpp:81: error: no `nsresult nsSampleImpl::QueryInterface(const nsIID&, void**)' member function declared in class `nsSampleImpl'
nsSample.cpp: In member function `nsresult nsSampleImpl::QueryInterface(const nsIID&, void**)':
nsSample.cpp:81: error: `::nsISample' has not been declared
nsSample.cpp:81: error: `COMTypeInfo' undeclared (first use this function)
nsSample.cpp:81: error: expected primary-expression before "int"
nsSample.cpp:81: error: expected `)' before "int"
nsSample.cpp:81: error: expected `)' before ';' token
nsSample.cpp:81: error: `nsISample' has not been declared
nsSample.cpp:81: error: expected `>' before '*' token
nsSample.cpp:81: error: expected `(' before '*' token
nsSample.cpp:81: error: expected primary-expression before '>' token
nsSample.cpp:81: error: expected `)' before ';' token
nsSample.cpp: In function `nsresult nsSampleImpl_GetInterfacesHelper(PRUint32*, nsIID***)':
nsSample.cpp:81: error: `::nsISample' has not been declared
nsSample.cpp:81: error: `COMTypeInfo' undeclared (first use this function)
nsSample.cpp:81: error: expected primary-expression before '*' token
nsSample.cpp:81: error: expected primary-expression before ')' token
nsSample.cpp:81: error: expected `;'
nsSample.cpp: At global scope:
nsSample.cpp:89: error: no `nsresult nsSampleImpl::GetValue(char**)' member function declared in class `nsSampleImpl'
nsSample.cpp:120: error: no `nsresult nsSampleImpl::SetValue(const char*)' member function declared in class `nsSampleImpl'
nsSample.cpp:141: error: no `nsresult nsSampleImpl::Poke(const char*)' member function declared in class `nsSampleImpl'
nsSample.cpp: In member function `nsresult nsSampleImpl::Poke(const char*)':
nsSample.cpp:142: error: `SetValue' undeclared (first use this function)
nsSample.cpp: At global scope:
nsSample.cpp:153: error: no `nsresult nsSampleImpl::WriteValue(const char*)' member function declared in class `nsSampleImpl'
In file included from /cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/mozilla/Module.h:44,
from /cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/mozilla/ModuleUtils.h:42,
from nsSampleModule.cpp:39:
/cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsCOMPtr.h:895: error: an explicit specialization must be preceded by 'template <>'
/cygdrive/c/dev/greenchallenge/xulrunner-sdk-9.0.1/include/nsCOMPtr.h:1366: error: an explicit specialization must be preceded by 'template <>'
In file included from nsSampleModule.cpp:42:
nsSample.h:44:23: nsISample.h: No such file or directory
In file included from nsSampleModule.cpp:42:
nsSample.h:64: error: expected class-name before '{' token
nsSample.h:125: error: ISO C++ forbids declaration of `NS_DECL_NSISAMPLE' with no type
nsSample.h:125: error: expected `;' before "private"
Makefile:27: recipe for target `build' failed
make: *** [build] Error 1
C'est comme s'il y avait des erreurs dans le code Mozilla ... Qu'est-ce que je fais de mal?
Merci!
La solution 2
Wladimir avait raison sur un point: nsISample.h manquait dans la compilation.
Cependant, la création de ce fichier ne résoudra pas le problème principal: Mozilla XPCOM ne peut pas être compilé avec GCC pour Windows!
Le même code sous VisualC ++ express sera compilé.
C'est bizarre, je me demande pourquoi ils ont choisi ce compilateur.Ne faites pas comme moi, n'essayez pas GCC pour compiler Mozilla XPCOM!
Autres conseils
L'erreur importante semble être celle-ci, le reste ressemble à des erreurs de suivi:
nsSample.h: 44: 23: nsISample.h: Aucun fichier ou répertoire de ce type
Ce fichier doit être créé au moment de la construction à partir de nsISample.idl en utilisant l ' outil de ligne de commande xpidl :
xpidl -m en-tête nsISample.idl
Apparemment, dans les nouvelles versions du SDK XULRunner, vous utiliseriez plutôt pyxpidl :
header.py -o nsISample.h nsISample.idl
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