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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/libwebrtc/build/config/nacl/BUILD.gn | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/build/config/nacl/BUILD.gn')
-rw-r--r-- | third_party/libwebrtc/build/config/nacl/BUILD.gn | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/config/nacl/BUILD.gn b/third_party/libwebrtc/build/config/nacl/BUILD.gn new file mode 100644 index 0000000000..89fbf85aa5 --- /dev/null +++ b/third_party/libwebrtc/build/config/nacl/BUILD.gn @@ -0,0 +1,143 @@ +# Copyright (c) 2014 The Native Client Authors. All rights reserved. +# Use of this source code is governed by a BSD-style license that can be +# found in the LICENSE file. + +import("//build/config/nacl/config.gni") + +# Native Client Definitions +config("nacl_defines") { + if (is_linux || is_chromeos || is_android || is_nacl) { + defines = [ + "_POSIX_C_SOURCE=199506", + "_XOPEN_SOURCE=600", + "_GNU_SOURCE=1", + "__STDC_LIMIT_MACROS=1", + ] + } else if (is_win) { + defines = [ "__STDC_LIMIT_MACROS=1" ] + } + + if (target_cpu == "pnacl" && !is_nacl_nonsfi) { + # TODO: Remove the following definition once NACL_BUILD_ARCH and + # NACL_BUILD_SUBARCH are defined by the PNaCl toolchain. + defines += [ "NACL_BUILD_ARCH=pnacl" ] + } +} + +config("nexe_defines") { + defines = [ + "DYNAMIC_ANNOTATIONS_ENABLED=1", + "DYNAMIC_ANNOTATIONS_PREFIX=NACL_", + ] +} + +config("nacl_warnings") { + if (is_win) { + # Some NaCl code uses forward declarations of static const variables, + # with initialized definitions later on. (The alternative would be + # many, many more forward declarations of everything used in that + # const variable's initializer before the definition.) The Windows + # compiler is too stupid to notice that there is an initializer later + # in the file, and warns about the forward declaration. + cflags = [ "/wd4132" ] + } +} + +# The base target that all targets in the NaCl build should depend on. +# This allows configs to be modified for everything in the NaCl build, even when +# the NaCl build is composed into the Chrome build. (GN has no functionality to +# add flags to everything in //native_client, having a base target works around +# that limitation.) +source_set("nacl_base") { + public_configs = [ + ":nacl_defines", + ":nacl_warnings", + ] + if (current_os == "nacl") { + public_configs += [ ":nexe_defines" ] + } +} + +config("compiler") { + configs = [] + cflags = [] + ldflags = [] + libs = [] + + if (is_clang && target_cpu != "pnacl") { + # -no-integrated-as is the default in nacl-clang for historical + # compatibility with inline assembly code and so forth. But there + # are no such cases in Chromium code, and -integrated-as is nicer in + # general. Moreover, the IRT must be built using LLVM's assembler + # on x86-64 to preserve sandbox base address hiding. Use it + # everywhere for consistency (and possibly quicker builds). + cflags += [ "-integrated-as" ] + } + if (is_nacl_nonsfi) { + cflags += [ "--pnacl-allow-translate" ] + ldflags += [ + "--pnacl-allow-translate", + "--pnacl-allow-native", + "-Wl,--noirt", + "-Wt,--noirt", + "-Wt,--noirtshim", + + # The clang driver automatically injects -lpthread when using libc++, but + # the toolchain doesn't have it yet. To get around this, use + # -nodefaultlibs and make each executable target depend on + # "//native_client/src/nonsfi/irt:nacl_sys_private". + "-nodefaultlibs", + ] + libs += [ + "c++", + "m", + "c", + "pnaclmm", + ] + include_dirs = [ "//native_client/src/public/linux_syscalls" ] + } + + asmflags = cflags +} + +config("compiler_codegen") { + cflags = [] + + if (is_nacl_irt) { + cflags += [ + # A debugger should be able to unwind IRT call frames. This is + # the default behavior on x86-64 and when compiling C++ with + # exceptions enabled; the change is for the benefit of x86-32 C. + # The frame pointer is unnecessary when unwind tables are used. + "-fasynchronous-unwind-tables", + "-fomit-frame-pointer", + ] + + if (target_cpu == "x86") { + # The x86-32 IRT needs to be callable with an under-aligned + # stack; so we disable SSE instructions, which can fault on + # misaligned addresses. See + # https://code.google.com/p/nativeclient/issues/detail?id=3935 + cflags += [ + "-mstackrealign", + "-mno-sse", + ] + } + } + + asmflags = cflags +} + +config("irt_optimize") { + cflags = [ + # Optimize for space, keep the IRT nexe small. + "-Os", + + # These are omitted from non-IRT libraries to keep the libraries + # themselves small. + "-ffunction-sections", + "-fdata-sections", + ] + + ldflags = [ "-Wl,--gc-sections" ] +} |