HP-UX 11.31编译Python模块时gcc不识别+z选项，如何解决？

Hey there! Let's tackle this issue you're facing. The +z flag is actually a HP-UX native cc compiler option used to generate dynamically linked shared libraries—but GCC doesn't recognize it, which is why you're seeing that error. And yes, you can absolutely replace/remove it with GCC-compatible alternatives. Here's how:

1. Override Compile/Link Flags Directly in the Command Line #

Instead of letting the setup.py use the default HP-UX flags, explicitly set CFLAGS and LDFLAGS to use GCC's equivalent options when running the build command:

CC=gcc CFLAGS="-DNDEBUG -O -fPIC" LDFLAGS="-shared" python setup.py build

• -fPIC: Tells GCC to generate position-independent code (required for shared libraries, same purpose as HP cc's +z at compile time)
• -shared: Instructs GCC to create a shared library (matches what +z does at link time)

2. Modify the setup.py File (If Flags Are Hardcoded) #

If the +z flag is hardcoded into the module's setup.py, you'll need to edit it directly:

1. Open setup.py in a text editor
2. Look for sections where extra_compile_args or extra_link_args are defined. You might see something like:

   extra_compile_args = ['+z']
   

3. Replace those HP-UX specific flags with GCC-compatible ones:

   extra_compile_args = ['-fPIC']
   extra_link_args = ['-shared']
   

4. Save the file and re-run the build command as before.

Why This Works #

The +z flag is exclusive to HP's own compiler. GCC uses its own set of flags to achieve the same goal (creating dynamically linkable modules), so replacing +z with -fPIC and -shared will maintain the module's ability to be loaded dynamically by Python, without breaking the build with GCC.

内容的提问来源于stack exchange，提问作者Kwang Hun Lee