Processing (Unix): better pipe2(2) existance check

Author: CarterLi

CMakeLists.txt

@@ -1182,6 +1182,9 @@ endif()
 if(LINUX)
     check_function_exists(statx HAVE_STATX)
 endif()
+if(NOT WIN32)
+    check_function_exists(pipe2 HAVE_PIPE2)
+endif()
 
 if(ENABLE_SYSTEM_YYJSON)
     find_package(yyjson)
@@ -1296,6 +1299,10 @@ if(HAVE_WCWIDTH)
     target_compile_definitions(libfastfetch PUBLIC FF_HAVE_WCWIDTH)
 endif()
 
+if(HAVE_PIPE2)
+    target_compile_definitions(libfastfetch PUBLIC FF_HAVE_PIPE2)
+endif()
+
 if(NOT "${CUSTOM_PCI_IDS_PATH}" STREQUAL "")
     message(STATUS "Custom file path of pci.ids: ${CUSTOM_PCI_IDS_PATH}")
     target_compile_definitions(libfastfetch PRIVATE FF_CUSTOM_PCI_IDS_PATH=${CUSTOM_PCI_IDS_PATH})

src/common/processing_linux.c

@@ -32,9 +32,9 @@
 
 enum { FF_PIPE_BUFSIZ = 8192 };
 
-static inline int ffPipe2(int *fds, int flags)
+static inline int ffPipe2(int* fds, int flags)
 {
-    #ifdef __APPLE__
+    #ifndef FF_HAVE_PIPE2
         if(pipe(fds) == -1)
             return -1;
         fcntl(fds[0], F_SETFL, fcntl(fds[0], F_GETFL) | flags);