Disable PGO for deb/ubuntu, because everything is horrible.

Also: Grab dependencies, patches and further config options from ubuntu
upstream build sources. Builds statically against a
mozilla-gcc-7/libstdc++7. Let's hope this works for Appimages and
Flatpaks as well, "everywhere".

4 files changed, 173 insertions, 0 deletions

diff --git a/deb_patches/build-with-libstdc++-7.patch b/deb_patches/build-with-libstdc++-7.patch
new file mode 100644
index 0000000..dfc0665
--- /dev/null
+++ b/deb_patches/build-with-libstdc++-7.patch
@@ -0,0 +1,36 @@
+Description: point clang to the toolchain provided by the gcc-mozilla package (version 7 required for C++ 17), and statically link against libstdc++
+Author: Olivier Tilloy <olivier.tilloy@canonical.com>
+Bug-Ubuntu: https://launchpad.net/bugs/1856861
+
+--- a/build/moz.configure/toolchain.configure
++++ b/build/moz.configure/toolchain.configure
+@@ -1387,6 +1387,9 @@ set_config('_DEPEND_CFLAGS', depend_cfla
+ set_config('_HOST_DEPEND_CFLAGS', depend_cflags(host_c_compiler))
+ 
+ 
++add_old_configure_assignment('CXXFLAGS', ['--gcc-toolchain=/usr/lib/gcc-mozilla'])
++
++
+ @depends(c_compiler)
+ def preprocess_option(compiler):
+     # The uses of PREPROCESS_OPTION depend on the spacing for -o/-Fi.
+@@ -2074,7 +2074,7 @@
+             flags.append('-Wl,-syslibroot,%s' % macos_sdk)
+         else:
+             flags.append('-Wl,--sysroot=%s' % macos_sdk)
+-
++    flags.append('-static-libstdc++')
+     return flags
+ 
+ 
+--- a/servo/components/style/build_gecko.rs
++++ b/servo/components/style/build_gecko.rs
+@@ -148,6 +148,8 @@ impl BuilderExt for Builder {
+             builder = builder.with_rustfmt(path);
+         }
+ 
++        builder = builder.clang_arg("--gcc-toolchain=/usr/lib/gcc-mozilla");
++
+         for dir in SEARCH_PATHS.iter() {
+             builder = builder.clang_arg("-I").clang_arg(dir.to_str().unwrap());
+         }
diff --git a/deb_patches/drop-check-glibc-symbols.patch b/deb_patches/drop-check-glibc-symbols.patch
new file mode 100644
index 0000000..98cbf92
--- /dev/null
+++ b/deb_patches/drop-check-glibc-symbols.patch
@@ -0,0 +1,19 @@
+Description: Drop the glibc and stdcxx checks.
+ We're not compiling Firefox to run on a different version.
+Author: Chris Coulson <chris.coulson@canonical.com>
+Author: Olivier Tilloy <olivier.tilloy@canonical.com>
+Forwarded: not-needed
+
+--- a/python/mozbuild/mozbuild/action/check_binary.py
++++ b/python/mozbuild/mozbuild/action/check_binary.py
+@@ -296,9 +296,7 @@ def checks(target, binary):
+         target = HOST
+     checks = []
+     if target['MOZ_LIBSTDCXX_VERSION']:
+-        checks.append(check_stdcxx)
+         checks.append(check_libgcc)
+-        checks.append(check_glibc)
+ 
+     # Disabled for local builds because of readelf performance: See bug 1472496
+     if not buildconfig.substs.get('DEVELOPER_OPTIONS'):
+
diff --git a/deb_patches/fix-armhf-webrtc-build.patch b/deb_patches/fix-armhf-webrtc-build.patch
new file mode 100644
index 0000000..44e88a6
--- /dev/null
+++ b/deb_patches/fix-armhf-webrtc-build.patch
@@ -0,0 +1,83 @@
+diff -r 53fd96ca5aa4 media/webrtc/gn-configs/arm_False_arm_linux.json
+--- a/media/webrtc/gn-configs/arm_False_arm_linux.json	Sun Dec 09 23:42:51 2018 +0200
++++ b/media/webrtc/gn-configs/arm_False_arm_linux.json	Mon Dec 10 10:40:13 2018 +0100
+@@ -15969,9 +15969,7 @@
+                 "/home/jenkins/workspace/Firefox-default/label/armv7/firefox/obj-armv7l-unknown-linux-gnueabihf/media/webrtc/trunk/webrtc/gn-output/gen/"
+             ],
+             "libs": [],
+-            "sources": [
+-                "//system_wrappers/source/cpu_features_linux.c"
+-            ],
++            "sources": [],
+             "type": "static_library"
+         },
+         "//system_wrappers:field_trial_api": {
+diff -r 53fd96ca5aa4 media/webrtc/gn-configs/arm_True_arm_linux.json
+--- a/media/webrtc/gn-configs/arm_True_arm_linux.json	Sun Dec 09 23:42:51 2018 +0200
++++ b/media/webrtc/gn-configs/arm_True_arm_linux.json	Mon Dec 10 10:40:13 2018 +0100
+@@ -15558,9 +15558,7 @@
+                 "/home/jenkins/workspace/Firefox-default/label/armv7/firefox/obj-armv7l-unknown-linux-gnueabihf/media/webrtc/trunk/webrtc/gn-output/gen/"
+             ],
+             "libs": [],
+-            "sources": [
+-                "//system_wrappers/source/cpu_features_linux.c"
+-            ],
++            "sources": [],
+             "type": "static_library"
+         },
+         "//system_wrappers:field_trial_api": {
+diff -r 53fd96ca5aa4 media/webrtc/trunk/webrtc/system_wrappers/cpu_features_linux_gn/moz.build
+--- a/media/webrtc/trunk/webrtc/system_wrappers/cpu_features_linux_gn/moz.build	Sun Dec 09 23:42:51 2018 +0200
++++ b/media/webrtc/trunk/webrtc/system_wrappers/cpu_features_linux_gn/moz.build	Mon Dec 10 10:40:13 2018 +0100
+@@ -31,10 +31,6 @@
+     "/media/webrtc/trunk/webrtc/"
+ ]
+ 
+-UNIFIED_SOURCES += [
+-    "/media/webrtc/trunk/webrtc/system_wrappers/source/cpu_features_linux.c"
+-]
+-
+ if not CONFIG["MOZ_DEBUG"]:
+ 
+     DEFINES["DYNAMIC_ANNOTATIONS_ENABLED"] = "0"
+@@ -53,20 +49,36 @@
+     DEFINES["WEBRTC_ARCH_ARM64"] = True
+     DEFINES["WEBRTC_HAS_NEON"] = True
+ 
+-if CONFIG["CPU_ARCH"] == "arm":
++    UNIFIED_SOURCES += [
++        "/media/webrtc/trunk/webrtc/system_wrappers/source/cpu_features_linux.c"
++    ]
+ 
+-    CFLAGS += [
+-        "-mfpu=neon"
+-    ]
++if CONFIG["CPU_ARCH"] == "arm":
+ 
+     DEFINES["WEBRTC_ARCH_ARM"] = True
+     DEFINES["WEBRTC_ARCH_ARM_V7"] = True
+     DEFINES["WEBRTC_HAS_NEON"] = True
+ 
++if CONFIG["CPU_ARCH"] == "ppc64":
++
++    UNIFIED_SOURCES += [
++        "/media/webrtc/trunk/webrtc/system_wrappers/source/cpu_features_linux.c"
++    ]
++
+ if CONFIG["CPU_ARCH"] == "x86":
+ 
+     CFLAGS += [
+         "-msse2"
+     ]
+ 
++    UNIFIED_SOURCES += [
++        "/media/webrtc/trunk/webrtc/system_wrappers/source/cpu_features_linux.c"
++    ]
++
++if CONFIG["CPU_ARCH"] == "x86_64":
++
++    UNIFIED_SOURCES += [
++        "/media/webrtc/trunk/webrtc/system_wrappers/source/cpu_features_linux.c"
++    ]
++
+ Library("cpu_features_linux_gn")
diff --git a/deb_patches/webrtc-fix-compiler-flags-for-armhf.patch b/deb_patches/webrtc-fix-compiler-flags-for-armhf.patch
new file mode 100644
index 0000000..5846b21
--- /dev/null
+++ b/deb_patches/webrtc-fix-compiler-flags-for-armhf.patch
@@ -0,0 +1,35 @@
+# Description: Don't pass -mfloat-abi=softfp on armhf
+# Author: Chris Coulson <chris.coulson@canonical.com>
+# Forwarded: no
+
+--- a/build/gyp.mozbuild
++++ b/build/gyp.mozbuild
+@@ -107,9 +107,15 @@ if CONFIG['ARM_ARCH']:
+         gyp_vars['arm_neon'] = 1
+         gyp_vars['build_with_neon'] = 1
+     else:
+-        # CPU detection for ARM works on Android only.  armv7 always uses CPU
+-        # detection, so we have to set armv7=0 for non-Android target
+-        gyp_vars['armv7'] = 0
++        gyp_vars['armv7'] = 1
++        # We enable NEON for Ubuntu armhf. Note that these don't really
++        # have any effect here as NEON is hardcoded on in
++        # media/webrtc/trunk/webrtc/build/common.gypi. Disabling these
++        # without fixing that file will result in a link failure, as
++        # targets hidden behind the build_with_neon flag don't get
++        # built but WEBRTC_HAS_NEON is still defined
++        gyp_vars['arm_neon'] = 1
++        gyp_vars['build_with_neon'] = 1
+     # For libyuv
+     gyp_vars['arm_version'] = int(CONFIG['ARM_ARCH'])
+ 
+--- a/media/webrtc/trunk/webrtc/build/config/compiler/BUILD.gn
++++ b/media/webrtc/trunk/webrtc/build/config/compiler/BUILD.gn
+@@ -590,7 +590,6 @@ config("compiler_cpu_abi") {
+       if (!is_nacl) {
+         cflags += [
+           "-march=$arm_arch",
+-          "-mfloat-abi=$arm_float_abi",
+         ]
+       }
+       if (arm_tune != "") {