我如何在Linux上构建PPAPI插件? [英] How do I build a PPAPI plugin on Linux?

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问题描述

我如何在Linux上为Chromium创建一个PPAPI插件?



例如,我想构建项目提供的存根示例。 http://src.chromium .org / viewvc / chrome / trunk / src / ppapi / examples / stub / stub.cc?view =标记

到目前为止,我有以下Makefile

  libexample.so.1.0.1:example.o 
g ++ -shared -Wl,-soname,libexample。 so.1 -o libexample.so.1.0.1 example.o -lc -lppapi_cpp -lppapi_cpp_objects -L / home / carlos / Desktop / ppapi / example /

example.o:
g ++ -fPIC -Wall -g -c stub.cc -o example.o -I / home / carlos / Desktop /

clean:
rm example.o libexample.so.1.0。 1

运行:
google-chrome -d --register-pepper-plugins =/ home / carlos / Desktop / ppapi / examples / stub / libexample.so.1.0.1; application / x-ppapi-example

但是,libexample.so.1.0.1缺少符号。

  nm libexample.so.1.0.1 --demangle -u | grep pp :: 

给我这个:

  U pp :: Module :: Get()
用于pp :: Module
的U typeinfo for pp :: Instance

这些符号在哪里?

解决方案

我发现那


make -n


允许重现复杂的Makefile正在做什么。从那里,这是一个试验和错误的问题。下面是适用于我的Makefile。

  libppapi_example.so:stub.o 
g ++ -shared -pthread - Wl,-z,noexecstack -Wl,-soname = libppapi_example.so -o libppapi_example.so -Wl, - start-group stub.o libppapi_cpp.a libppapi_cpp_objects.a -Wl, - end-group

stub.o:
g ++'-DNO_HEAPCHECKER''-DCHROMIUM_BUILD''-DENABLE_REMOTING = 1''-DENABLE_GPU = 1''-D__STDC_FORMAT_MACROS''-DDYNAMIC_ANNOTATIONS_ENABLED = 1''-D_DEBUG'-I / home / carlos / Desktop / chromium / src / -Werror -pthread -fno-exceptions -Wall -Wno -unused-parameter -Wno-missing-field-initializers -D_FILE_OFFSET_BITS = 64 -fvisibility = hidden -pipe -fPIC -fno-strict- aliasing -fPIC -fvisibility = hidden -fvisibility = hidden -O0 -g -fno-rtti -fno-threadsafe-statics -fvisibility -inlines-hidden -MMD -MF stub.odraw -c -o stub.o stub.cc

clean:
rm -f stub.odraw stub.o libppapi_example.so

运行:
google-chrome -d --register-pepper -plugins =/家/ carlos / Desktop / ppapi / examples / stub / libppapi_example.so; application / x-ppapi-example


How do I build a PPAPI plugin for Chromium on Linux?

For example, I want to build the stub example provided by the project. http://src.chromium.org/viewvc/chrome/trunk/src/ppapi/examples/stub/stub.cc?view=markup

So far I have the following Makefile

libexample.so.1.0.1:example.o
    g++ -shared -Wl,-soname,libexample.so.1 -o libexample.so.1.0.1 example.o -lc -lppapi_cpp -lppapi_cpp_objects -L /home/carlos/Desktop/ppapi/example/

example.o:
    g++ -fPIC -Wall -g -c stub.cc -o example.o -I /home/carlos/Desktop/

clean:
    rm example.o libexample.so.1.0.1

run:
    google-chrome -d --register-pepper-plugins="/home/carlos/Desktop/ppapi/examples/stub/libexample.so.1.0.1;application/x-ppapi-example" 

However, libexample.so.1.0.1 is missing symbols.

nm libexample.so.1.0.1 --demangle -u | grep pp::

Gives me this:

U pp::Module::Get()
U typeinfo for pp::Module
U typeinfo for pp::Instance

Where are those symbols?

解决方案

I found out that

make -n

allows one to reproduce what a complicated Makefile is doing. From there, it was a matter of some trial and error. Below is the Makefile that works for me.

libppapi_example.so:stub.o
    g++ -shared  -pthread -Wl,-z,noexecstack -Wl,-soname=libppapi_example.so -o libppapi_example.so -Wl,--start-group stub.o libppapi_cpp.a libppapi_cpp_objects.a -Wl,--end-group 

stub.o:
    g++  '-DNO_HEAPCHECKER' '-DCHROMIUM_BUILD' '-DENABLE_REMOTING=1' '-DENABLE_GPU=1' '-D__STDC_FORMAT_MACROS' '-DDYNAMIC_ANNOTATIONS_ENABLED=1' '-D_DEBUG' -I/home/carlos/Desktop/chromium/src/ -Werror -pthread -fno-exceptions -Wall -Wno-unused-parameter -Wno-missing-field-initializers -D_FILE_OFFSET_BITS=64 -fvisibility=hidden -pipe -fPIC -fno-strict-aliasing -fPIC -fvisibility=hidden -fvisibility=hidden -O0 -g -fno-rtti -fno-threadsafe-statics -fvisibility-inlines-hidden -MMD -MF stub.o.d.raw -c -o stub.o stub.cc

clean:
    rm -f stub.o.d.raw stub.o libppapi_example.so

run:
    google-chrome -d --register-pepper-plugins="/home/carlos/Desktop/ppapi/examples/stub/libppapi_example.so;application/x-ppapi-example" 

这篇关于我如何在Linux上构建PPAPI插件?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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