我正在做的一个项目需要 avro，它需要 python-snappy，它需要 snappy。我很难想出正确的扩展咒语来真正让所有东西一起工作。
以下 buildout.cfg 构建成功，但它将 avro 安装到develop-eggs，并且尝试引用它的任何其他内容（例如在该[test]部分中）尝试再次构建它并失败。
构建.cfg
[buildout]
eggs-directory = eggs
extensions =
buildout.dumppickedversions
eggs =
avro
httplib2
pyramid
parts =
avro
test
mongodb
[snappy]
# Dependency for avro
recipe = zc.recipe.cmmi
url = http://snappy.googlecode.com/files/snappy-1.0.5.tar.gz
[avro]
recipe = zc.recipe.egg:custom
egg = avro
include-dirs = ${snappy:location}/include
library-dirs = ${snappy:location}/lib
[test]
recipe = pbp.recipe.noserunner
script = runtests
eggs =
${buildout:eggs}
pbp.recipe.noserunner
WebTest
[mongodb]
recipe = rod.recipe.mongodb
base-url = http://downloads.mongodb.org
version = 2.0.4
darwin-32bit-url = ${mongodb:base-url}/osx/mongodb-osx-i386-${mongodb:version}.tgz
darwin-64bit-url = ${mongodb:base-url}/osx/mongodb-osx-x86_64-${mongodb:version}.tgz
linux2-32bit-url = ${mongodb:base-url}/linux/mongodb-linux-i686-${mongodb:version}.tgz
linux2-64bit-url = ${mongodb:base-url}/linux/mongodb-linux-x86_64-${mongodb:version}.tgz
logpath=${buildout:parts-directory}/mongodb/log
dbpath=${buildout:parts-directory}/mongodb/data
master=true
update=true
输出
Uninstalling avro.
Updating snappy.
Installing avro.
zip_safe flag not set; analyzing archive contents...
Installing test.
Getting distribution for 'python-snappy'.
cc1plus: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
snappymodule.cc:28:20: error: Python.h: No such file or directory
snappymodule.cc:31:22: error: snappy-c.h: No such file or directory
snappymodule.cc:36: error: ISO C++ forbids declaration of ‘PyObject’ with no type
snappymodule.cc:36: error: expected ‘;’ before ‘*’ token
snappymodule.cc:54: error: expected initializer before ‘*’ token
snappymodule.cc:59: error: expected initializer before ‘*’ token
snappymodule.cc:43: warning: ‘_state’ defined but not used
error: Setup script exited with error: command 'gcc' failed with exit status 1
An error occurred when trying to install python-snappy 0.4. Look above this message for any errors that were output by easy_install.
While:
Installing test.
Getting distribution for 'python-snappy'.
Error: Couldn't install: python-snappy 0.4
是否有一种直接的方法来处理扩展依赖项与构建？我应该在这里做什么？