GPU (Linux): Support specifying custom pci.ids path for Linux

Author: CarterLi

CHANGELOG.md

@@ -10,6 +10,7 @@ Features:
 * Support additional temperature formatting options (#737)
     * `{ "temp": { "ndigits": 1 } }`
     * `{ "temp": { "color": { "green": "green", "yellow": "yellow", "red": "red" } } }`
+* Support specifying custom `pci.ids` path for Linux (GPU, Linux)
 
 # 2.8.5
 

CMakeLists.txt

@@ -76,6 +76,10 @@ option(ENABLE_PROPRIETARY_GPU_DRIVER_API "Enable proprietary GPU driver API (NVM
 option(BUILD_TESTS "Build tests" OFF) # Also create test executables
 option(SET_TWEAK "Add tweak to project version" ON) # This is set to off by github actions for release builds
 
+if (LINUX)
+    set(CUSTOM_PCI_IDS_PATH "" CACHE STRING "Custom path to file pci.ids, defaults to `/usr/share/hwdata/pci.ids`")
+endif()
+
 ####################
 # Compiler options #
 ####################
@@ -763,6 +767,11 @@ if(HAVE_WCWIDTH)
     target_compile_definitions(libfastfetch PRIVATE FF_HAVE_WCWIDTH)
 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})
+endif()
+
 function(ff_lib_enable VARNAME PKGCONFIG_NAMES CMAKE_NAME)
     if(NOT ENABLE_${VARNAME})
         return()

src/detection/gpu/gpu_linux.c

@@ -9,6 +9,9 @@
     #include "detection/gpu/gpu_driver_specific.h"
 #endif
 
+#define FF_STR_INDIR(x) #x
+#define FF_STR(x) FF_STR_INDIR(x)
+
 #include <inttypes.h>
 
 FF_MAYBE_UNUSED static void pciDetectTemp(FFGPUResult* gpu, uint32_t deviceClass)
@@ -53,6 +56,11 @@ static void pciDetectDriver(FFGPUResult* gpu, FFstrbuf* pciDir, FFstrbuf* buffer
 
 static bool loadPciIds(FFstrbuf* pciids)
 {
+    #ifdef FF_CUSTOM_PCI_IDS_PATH
+    ffReadFileBuffer(FF_STR(FF_CUSTOM_PCI_IDS_PATH), pciids);
+    if (pciids->length > 0) return true;
+    #endif
+
     ffReadFileBuffer(FASTFETCH_TARGET_DIR_USR "/share/hwdata/pci.ids", pciids);
     if (pciids->length > 0) return true;