db0912c6b2
Introduce "--with-system-gbm" option, allowing to build Firefox against system gbm library and to find system gbm header files. Also unify all gbm includes to match both system and bundled paths. Differential Revision: https://phabricator.services.mozilla.com/D242098
67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/Types.h"
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#include "prlink.h"
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#include <gbm.h>
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#define GET_FUNC(func, lib) \
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func##_fn = \
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(decltype(func##_fn))PR_FindFunctionSymbol(lib, #func) \
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#define IS_FUNC_LOADED(func) \
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(func != nullptr) \
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static struct gbm_device * (*gbm_create_device_fn)(int fd);
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static void (*gbm_device_destroy_fn)(struct gbm_device* gbm);
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bool IsGBMLibraryLoaded() {
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static bool isLoaded =
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(IS_FUNC_LOADED(gbm_create_device_fn) &&
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IS_FUNC_LOADED(gbm_device_destroy_fn));
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return isLoaded;
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}
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bool LoadGBMLibrary() {
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static PRLibrary* gbmLib = nullptr;
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static bool gbmInitialized = false;
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//TODO Thread safe
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if (!gbmInitialized) {
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gbmInitialized = true;
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gbmLib = PR_LoadLibrary("libgbm.so.1");
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if (!gbmLib) {
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return false;
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}
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GET_FUNC(gbm_create_device, gbmLib);
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GET_FUNC(gbm_device_destroy, gbmLib);
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}
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return IsGBMLibraryLoaded();
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}
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struct gbm_device *
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gbm_create_device(int fd)
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{
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if (!LoadGBMLibrary()) {
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return nullptr;
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}
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return gbm_create_device_fn(fd);
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}
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void
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gbm_device_destroy(struct gbm_device* gbm)
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{
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if (!LoadGBMLibrary()) {
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return;
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}
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return gbm_device_destroy_fn(gbm);
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}
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