From 714e1505fa9edb5a7233edbea06df0593d930b61 Mon Sep 17 00:00:00 2001
From: bill-auger <mr.j.spam.me@gmail.com>
Date: Sun, 19 Jan 2020 14:31:12 -0500
Subject: [iceweasel]: wip - i686

---
 libre/iceweasel/PKGBUILD                           | 103 ++++++++++++++-------
 .../iceweasel/avoid-libxul-OOM-python-check.patch  |  12 +++
 ...-disable-network-test-on-static-libraries.patch |  32 +++++++
 3 files changed, 115 insertions(+), 32 deletions(-)
 create mode 100644 libre/iceweasel/avoid-libxul-OOM-python-check.patch
 create mode 100644 libre/iceweasel/rust-static-disable-network-test-on-static-libraries.patch

diff --git a/libre/iceweasel/PKGBUILD b/libre/iceweasel/PKGBUILD
index 61c4fd39a..0e6ac05eb 100644
--- a/libre/iceweasel/PKGBUILD
+++ b/libre/iceweasel/PKGBUILD
@@ -72,6 +72,8 @@ source+=(https://repo.parabola.nu/other/iceweasel/${pkgname}_${_brandingver}-${_
          libre.patch
          libre-searchengines.patch
          vendor.js.in)
+source_i686+=('rust-static-disable-network-test-on-static-libraries.patch'
+              'avoid-libxul-OOM-python-check.patch')
 sha256sums=('1fa59aedc8469c3e6ffb12449ab7de2f93776f7679eedebfb74aa309b694956f'
             'SKIP'
             '5f7ac724a5c5afd9322b1e59006f4170ea5354ca1e0e60dab08b7784c2d8463c'
@@ -81,6 +83,8 @@ sha256sums=('1fa59aedc8469c3e6ffb12449ab7de2f93776f7679eedebfb74aa309b694956f'
             '1169ccda88642881e0ba024f0c82fce9ac3064d3587517f9960e88cae479ce3e'
             'dfed11d97f1d4198a3dc608be159b6b53a11054f376cdb73bb0fe9a487ae9418'
             '4979e733215492372c196cdb93ec61eac1fbbd44f44e637dbd420040c8d9affe')
+sha256sums_i686=('4da71f6614dce71db8e9ec2d317514aae90838c2c65620d435f0df06b45b578b'
+                 '5a3e038a57c4576dcb88766d41cbfda5ad109d5cfe41d2000f7ba25563bf00f2')
 validpgpkeys=('14F26682D0916CDD81E37B6D61B7B526D98F0353') # Mozilla Software Releases <release@mozilla.com>
 validpgpkeys+=('BFA8008A8265677063B11BF47171986E4B745536') # Andreas Grapentin
 
@@ -131,14 +135,29 @@ ac_add_options --disable-tests
 ac_add_options --disable-eme
 END
 
-  if [[ $CARCH = arm* ]]; then
+  if [[ $CARCH = armv7h ]]; then
     # TODO: fixme
     false
   fi
 
   if [[ $CARCH = i686 ]]; then
-    # TODO: fixme
-    false
+    # disable LTO and use gcc toolchain (clang has issues on IA32)
+    export MOZ_SOURCE_CHANGESET="DEVEDITION_${pkgver//./_}_RELEASE"
+    cat >>../mozconfig <<END
+ac_add_options --disable-lto
+export CC=gcc
+export CXX=g++
+export AR=gcc-ar
+export NM=gcc-nm
+export RANLIB=gcc-ranlib
+END
+
+    # test failure in rust code (complaining about network functions) when PGO is used,
+    # see https://bugzilla.mozilla.org/show_bug.cgi?id=1565757
+    patch -p1 -i "$srcdir"/rust-static-disable-network-test-on-static-libraries.patch
+
+    # readelf: Error: Unable to seek to 0x801db328 for section headers
+    patch -p1 -i "$srcdir"/avoid-libxul-OOM-python-check.patch
   fi
 
   ## Rebranding
@@ -223,8 +242,15 @@ build() {
   fi
 
   if [[ $CARCH = i686 ]]; then
-    # TODO: fixme
-    false
+    # disable LTO and use gcc toolchain (clang has issues on IA32)
+    export RUSTFLAGS+=" -Cdebuginfo=0 -Clto=off"
+    export LDFLAGS+=" -Wl,--no-keep-memory -Wl,--reduce-memory-overheads"
+
+    # avoid excessive debug symbols in rust leading to out-of-memory situations
+    sed -i "s/debug_info = '\''2'\''/debug_info = '\''0'\''/" build/moz.configure/toolchain.configure
+
+    # don't kill build slaves by auto-guessing available CPU cores
+#     export MOZ_MAKE_FLAGS=-j1
   fi
 
   # LTO needs more open files
@@ -239,40 +265,47 @@ build() {
   CFLAGS="${CFLAGS/-fvar-tracking-assignments/}"
   CXXFLAGS="${CXXFLAGS/-fvar-tracking-assignments/}"
 
-  # Do 3-tier PGO
-  msg2 "Building instrumented browser..."
-  cat >.mozconfig ../mozconfig - <<END
+  # do not do profiling on i686: ..or it will for sure run out of memory - it doesn't find libraries:
+  # "XPCOMGlueLoad error for file /build/firefox/src/firefox-70.0/obj-i686-pc-linux-gnu/dist/firefox/libxul.so:
+  # libmozsandbox.so: cannot open shared object file: No such file or directory
+  # Couldn't load XPCOM."
+  # gcc and cross PGO are not best friends, disable PGO
+  if [[ $CARCH = x86_64 ]]; then
+    # Do 3-tier PGO
+    msg2 "Building instrumented browser..."
+    cat >.mozconfig ../mozconfig - <<END
 ac_add_options --enable-profile-generate=cross
 END
-  ./mach build
-
-  msg2 "Profiling instrumented browser..."
-  ./mach package
-  LLVM_PROFDATA=llvm-profdata \
-    JARLOG_FILE="$PWD/jarlog" \
-    xvfb-run -a -n 92 -s "-screen 0 1600x1200x24" \
-    ./mach python build/pgo/profileserver.py
-
-  if [[ ! -s merged.profdata ]]; then
-    error "No profile data produced."
-    return 1
-  fi
-
-  if [[ ! -s jarlog ]]; then
-    error "No jar log produced."
-    return 1
-  fi
-
-  msg2 "Removing instrumented browser..."
-  ./mach clobber
-
-  msg2 "Building optimized browser..."
-  cat >.mozconfig ../mozconfig - <<END
+    ./mach build
+
+    msg2 "Profiling instrumented browser..."
+    ./mach package
+    LLVM_PROFDATA=llvm-profdata \
+      JARLOG_FILE="$PWD/jarlog" \
+      xvfb-run -a -n 92 -s "-screen 0 1600x1200x24" \
+      ./mach python build/pgo/profileserver.py
+
+    if [[ ! -s merged.profdata ]]; then
+      error "No profile data produced."
+      return 1
+    fi
+
+    if [[ ! -s jarlog ]]; then
+      error "No jar log produced."
+      return 1
+    fi
+
+    msg2 "Removing instrumented browser..."
+    ./mach clobber
+
+    msg2 "Building optimized browser..."
+    cat >.mozconfig ../mozconfig - <<END
 ac_add_options --enable-lto=cross
 ac_add_options --enable-profile-use=cross
 ac_add_options --with-pgo-profile-path=${PWD@Q}/merged.profdata
 ac_add_options --with-pgo-jarlog=${PWD@Q}/jarlog
 END
+  fi
   ./mach build
 
   msg2 "Building symbol archive..."
@@ -338,6 +371,12 @@ END
 exec /usr/lib/$pkgname/$pkgname "\$@"
 END
 
+  if [[ $CARCH = i686 ]]; then
+    # libxul.so cannot find it's libraries
+    install -dm 755 "${pkgdir}"/etc/ld.so.conf.d
+    echo "/usr/lib/${pkgname}" > "${pkgdir}"/etc/ld.so.conf.d/${pkgname}.conf
+  fi
+
   # Replace duplicate binary with wrapper
   # https://bugzilla.mozilla.org/show_bug.cgi?id=658850
   ln -srfv "$pkgdir/usr/bin/$pkgname" "$pkgdir/usr/lib/$pkgname/$pkgname-bin"
diff --git a/libre/iceweasel/avoid-libxul-OOM-python-check.patch b/libre/iceweasel/avoid-libxul-OOM-python-check.patch
new file mode 100644
index 000000000..9ab81bb7b
--- /dev/null
+++ b/libre/iceweasel/avoid-libxul-OOM-python-check.patch
@@ -0,0 +1,12 @@
+diff -rauN a/config/rules.mk b/config/rules.mk
+--- a/config/rules.mk	2019-10-25 11:08:20.757231756 +0200
++++ b/config/rules.mk	2019-10-25 11:11:04.972821611 +0200
+@@ -663,7 +663,7 @@
+ 	$(RM) $@
+ endif
+ 	$(MKSHLIB) $($@_$(OBJS_VAR_SUFFIX)) $(RESFILE) $(LDFLAGS) $(STATIC_LIBS) $(SHARED_LIBS) $(EXTRA_DSO_LDOPTS) $(MOZ_GLUE_LDFLAGS) $(OS_LIBS)
+-	$(call py_action,check_binary,--target $@)
++#	$(call py_action,check_binary,--target $@)
+ 
+ ifeq (_WINNT,$(GNU_CC)_$(OS_ARCH))
+ ifdef MSMANIFEST_TOOL
diff --git a/libre/iceweasel/rust-static-disable-network-test-on-static-libraries.patch b/libre/iceweasel/rust-static-disable-network-test-on-static-libraries.patch
new file mode 100644
index 000000000..f5e0f6a0a
--- /dev/null
+++ b/libre/iceweasel/rust-static-disable-network-test-on-static-libraries.patch
@@ -0,0 +1,32 @@
+diff -rauN firefox-72.0.1/config/makefiles/rust.mk firefox-72.0.1-rust-static-disable-network-test-on-static-libraries-patch/config/makefiles/rust.mk
+--- firefox-72.0.1/config/makefiles/rust.mk	2020-01-08 02:23:30.000000000 +0100
++++ firefox-72.0.1-rust-static-disable-network-test-on-static-libraries-patch/config/makefiles/rust.mk	2020-01-10 12:17:40.172666172 +0100
+@@ -292,17 +292,17 @@
+ # the chance of proxy bypasses originating from rust code.
+ # The check only works when rust code is built with -Clto.
+ # Enabling sancov or TSan also causes this to fail.
+-ifndef MOZ_PROFILE_GENERATE
+-ifndef MOZ_TSAN
+-ifeq ($(OS_ARCH), Linux)
+-ifeq (,$(rustflags_sancov))
+-ifneq (,$(filter -Clto,$(cargo_rustc_flags)))
+-	$(call py_action,check_binary,--target --networking $@)
+-endif
+-endif
+-endif
+-endif
+-endif
++#ifndef MOZ_PROFILE_GENERATE
++#ifndef MOZ_TSAN
++#ifeq ($(OS_ARCH), Linux)
++#ifeq (,$(rustflags_sancov))
++#ifneq (,$(filter -Clto,$(cargo_rustc_flags)))
++#	$(call py_action,check_binary,--target --networking $@)
++#endif
++#endif
++#endif
++#endif
++#endif
+ 
+ force-cargo-library-check:
+ 	$(call CARGO_CHECK) --lib $(cargo_target_flag) $(rust_features_flag)
-- 
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