fix for linux build

Author: Tieqiong

.github/workflows/wheels.yml

@@ -33,7 +33,7 @@ jobs:
           - [macos-13, macosx_x86_64]
           - [macos-14, macosx_arm64]
           - [windows-latest, win_amd64]
-        python: 
+        python:
           - ["3.10", "cp310"]
           - ["3.11", "cp311"]
           - ["3.12", "cp312"]
@@ -55,7 +55,7 @@ jobs:
           CIBW_BEFORE_BUILD: yum install -y gsl-devel && pip install -e .
         with:
           output-dir: wheelhouse
-      
+
       - name: Build wheels for macOS
         if: runner.os == 'macOS'
         uses: pypa/[email protected]
@@ -83,7 +83,7 @@ jobs:
           echo "INCLUDE=$env:INCLUDE" >> $env:GITHUB_ENV
           echo "LIB=$env:LIB" >> $env:GITHUB_ENV
           echo "CONDA_PREFIX=$env:CONDA_PREFIX" >> $env:GITHUB_ENV
-        
+
       - name: Build wheels for Windows
         if: runner.os == 'Windows'
         uses: pypa/[email protected]

setup.py

@@ -95,7 +95,9 @@ def get_gsl_config_win():
 compiler_type = get_compiler_type()
 if compiler_type in ("unix", "cygwin", "mingw32"):
     extra_compile_args = ["-std=c++11", "-Wall", "-Wno-write-strings", "-O3", "-funroll-loops", "-ffast-math"]
-    extra_objects += ((p + "/libgsl.a") for p in gcfg["library_dirs"])
+    extra_objects += [
+        os.path.join(p, "libgsl.a") for p in gcfg["library_dirs"] if os.path.isfile(os.path.join(p, "libgsl.a"))
+    ]
 elif compiler_type == "msvc":
     define_macros += [("_USE_MATH_DEFINES", None)]
     extra_compile_args = ["/EHs"]
@@ -117,8 +119,6 @@ def get_gsl_config_win():
 
 # define extension here
 def create_extensions():
-    if sys.platform.startswith('linux'):
-        return [Extension("diffpy.pdffit2.pdffit2", glob.glob("src/extensions/**/*.cc"))]
     ext = Extension("diffpy.pdffit2.pdffit2", glob.glob("src/extensions/**/*.cc"), **ext_kws)
     return [ext]