# --- T2-COPYRIGHT-BEGIN ---
# t2/package/*/firefox/hotfix-ia64-webrtc-gn.patch
# Copyright (C) 2026 The T2 SDE Project
# SPDX-License-Identifier: GPL-2.0 or patched project license
# --- T2-COPYRIGHT-END ---
#
# libwebrtc's moz.build files are generated from GN and enumerate sources,
# DIRS and DEFINES per (OS_TARGET, TARGET_CPU). ia64 is unknown to upstream
# GN, so every arch-gated block skips it: the SPL C fallbacks
# (WebRtcSpl_SqrtFloor, WebRtcSpl_ComplexFFT/IFFT, WebRtcSpl_ComplexBitReverse,
# WebRtcSpl_FilterARFastQ12) are never compiled, and the desktop_capture /
# primitives libraries are never even added to DIRS -- leaving libxul.so with
# undefined references to webrtc::DesktopCaptureOptions, webrtc::DesktopCapturer,
# webrtc::BasicDesktopFrame, etc. (The GPREL22 relocation overflow that used to
# mask this link failure is fixed separately in gcc; see
# package/*/gcc/hotfix-ia64-gprel22-constpool.patch.)
#
# ia64 is a 64-bit little-endian, non-SIMD Linux target, exactly like ppc64
# here (endianness itself is handled in rtc_base/system/arch.h, patched by
# hotfix-ia64-webrtc-arch.patch). ppc64 selects the generic C signal-processing
# sources and the X11-only desktop capturer (no Wayland/PipeWire/portal/libepoxy
# dependency), which suits the ia64 bring-up. Mirror each ppc64-gated block for
# ia64 in the five affected moz.build files.

--- firefox-152.0.5/third_party/libwebrtc/moz.build.vanilla	2026-07-12 19:13:00.804031998 +0200
+++ firefox-152.0.5/third_party/libwebrtc/moz.build	2026-07-12 19:13:00.806197961 +0200
@@ -761,6 +761,13 @@
         "/third_party/libwebrtc/modules/desktop_capture/primitives_gn"
     ]
 
+if CONFIG["MOZ_X11"] == "1" and CONFIG["OS_TARGET"] == "Linux" and CONFIG["TARGET_CPU"] == "ia64":
+
+    DIRS += [
+        "/third_party/libwebrtc/modules/desktop_capture/desktop_capture_gn",
+        "/third_party/libwebrtc/modules/desktop_capture/primitives_gn"
+    ]
+
 if CONFIG["MOZ_X11"] == "1" and CONFIG["OS_TARGET"] == "Linux" and CONFIG["TARGET_CPU"] == "riscv64":
 
     DIRS += [
--- firefox-152.0.5/third_party/libwebrtc/third_party/pffft/pffft_gn/moz.build.vanilla	2026-07-12 19:13:00.811877322 +0200
+++ firefox-152.0.5/third_party/libwebrtc/third_party/pffft/pffft_gn/moz.build	2026-07-12 19:13:00.813198080 +0200
@@ -128,6 +128,10 @@
 
     DEFINES["PFFFT_SIMD_DISABLE"] = True
 
+if CONFIG["TARGET_CPU"] == "ia64":
+
+    DEFINES["PFFFT_SIMD_DISABLE"] = True
+
 if CONFIG["TARGET_CPU"] == "riscv64":
 
     DEFINES["PFFFT_SIMD_DISABLE"] = True
--- firefox-152.0.5/third_party/libwebrtc/common_audio/third_party/spl_sqrt_floor/spl_sqrt_floor_gn/moz.build.vanilla	2026-07-12 19:13:00.819315738 +0200
+++ firefox-152.0.5/third_party/libwebrtc/common_audio/third_party/spl_sqrt_floor/spl_sqrt_floor_gn/moz.build	2026-07-12 19:13:00.821198215 +0200
@@ -180,6 +180,12 @@
         "/third_party/libwebrtc/common_audio/third_party/spl_sqrt_floor/spl_sqrt_floor.c"
     ]
 
+if CONFIG["TARGET_CPU"] == "ia64":
+
+    UNIFIED_SOURCES += [
+        "/third_party/libwebrtc/common_audio/third_party/spl_sqrt_floor/spl_sqrt_floor.c"
+    ]
+
 if CONFIG["TARGET_CPU"] == "x86":
 
     DEFINES["WEBRTC_ENABLE_AVX2"] = True
--- firefox-152.0.5/third_party/libwebrtc/common_audio/common_audio_c_gn/moz.build.vanilla	2026-07-12 19:13:00.826868831 +0200
+++ firefox-152.0.5/third_party/libwebrtc/common_audio/common_audio_c_gn/moz.build	2026-07-12 19:13:00.828896032 +0200
@@ -250,6 +250,14 @@
         "/third_party/libwebrtc/common_audio/signal_processing/filter_ar_fast_q12.c"
     ]
 
+if CONFIG["TARGET_CPU"] == "ia64":
+
+    UNIFIED_SOURCES += [
+        "/third_party/libwebrtc/common_audio/signal_processing/complex_bit_reverse.c",
+        "/third_party/libwebrtc/common_audio/signal_processing/complex_fft.c",
+        "/third_party/libwebrtc/common_audio/signal_processing/filter_ar_fast_q12.c"
+    ]
+
 if CONFIG["TARGET_CPU"] == "x86":
 
     DEFINES["WEBRTC_ENABLE_AVX2"] = True
--- firefox-152.0.5/third_party/libwebrtc/modules/desktop_capture/desktop_capture_gn/moz.build.vanilla	2026-07-12 19:13:00.834383581 +0200
+++ firefox-152.0.5/third_party/libwebrtc/modules/desktop_capture/desktop_capture_gn/moz.build	2026-07-12 19:13:00.836198470 +0200
@@ -383,6 +383,32 @@
         "/third_party/libwebrtc/modules/desktop_capture/linux/x11/x_window_property.cc"
     ]
 
+if CONFIG["TARGET_CPU"] == "ia64":
+
+    DEFINES["WEBRTC_USE_X11"] = True
+
+    OS_LIBS += [
+        "X11",
+        "Xcomposite",
+        "Xdamage",
+        "Xext",
+        "Xfixes",
+        "Xrandr",
+        "Xrender"
+    ]
+
+    UNIFIED_SOURCES += [
+        "/third_party/libwebrtc/modules/desktop_capture/linux/x11/mouse_cursor_monitor_x11.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/x11/screen_capturer_x11.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/x11/shared_x_display.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/x11/window_capturer_x11.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/x11/window_finder_x11.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/x11/window_list_utils.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/x11/x_atom_cache.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/x11/x_server_pixel_buffer.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/x11/x_window_property.cc"
+    ]
+
 if CONFIG["TARGET_CPU"] == "x86":
 
     DEFINES["WEBRTC_ENABLE_AVX2"] = True