www-client/seamonkey: Fixed build with =dev-lang/rust-1.52*

Closes: https://bugs.gentoo.org/789981
Signed-off-by: Lars Wendler <[email protected]>

www-client/seamonkey/files/seamonkey-2.53.7.1-rust-1.52.patch

@@ -0,0 +1,52 @@
+http://www.wg9s.com/comm-253/patches/seamonkey-253-patches/mozilla-release/patches/1670538-87a1.patch
+https://bugs.gentoo.org/789981
+
+--- seamonkey-2.53.7.1/config/rules.mk
++++ seamonkey-2.53.7.1/config/rules.mk
+@@ -861,16 +861,27 @@
+ # Versions of rust >= 1.45 need -Cembed-bitcode=yes for all crates when
+ # using -Clto.
+ ifeq (,$(filter 1.37.% 1.38.% 1.39.% 1.40.% 1.41.% 1.42.% 1.43.% 1.44.%,$(RUSTC_VERSION)))
+ RUSTFLAGS += -Cembed-bitcode=yes
+ endif
+ endif
+ endif
+
++ifndef RUSTC_BOOTSTRAP
++ifeq (,$(filter 1.47.% 1.48.% 1.49.%,$(RUSTC_VERSION)))
++# RUSTC_BOOTSTRAP := gkrust_shared,qcms for later
++RUSTC_BOOTSTRAP := gkrust_shared
++ifdef MOZ_RUST_SIMD
++RUSTC_BOOTSTRAP := $(RUSTC_BOOTSTRAP),encoding_rs,packed_simd
++endif
++export RUSTC_BOOTSTRAP
++endif
++endif
++
+ rustflags_override = RUSTFLAGS='$(MOZ_RUST_DEFAULT_FLAGS) $(RUSTFLAGS)'
+
+ ifdef MOZ_MSVCBITS
+ # If we are building a MozillaBuild shell, we want to clear out the
+ # vcvars.bat environment variables for cargo builds. This is because
+ # a 32-bit MozillaBuild shell on a 64-bit machine will try to use
+ # the 32-bit compiler/linker for everything, while cargo/rustc wants
+ # to use the 64-bit linker for build.rs scripts. This conflict results
+--- seamonkey-2.53.7.1/toolkit/library/rust/shared/build.rs.1670538.later
++++ seamonkey-2.53.7.1/toolkit/library/rust/shared/build.rs.1670538.later
+@@ -0,0 +1,16 @@
++--- build.rs
+++++ build.rs
++@@ -17,12 +17,12 @@ fn main() {
++ } else if std::env::var("MOZ_AUTOMATION").is_ok() {
++ panic!("Builds on automation must use a version of rust for which we know how to hook OOM: want < {}, have {}",
++ max_oom_hook_version, ver);
++ }
++ 
++ // This is a rather awful thing to do, but we're only doing it on
++ // versions of rustc that are not going to change the unstable APIs
++ // we use from under us, all being already released or beta.
++- if bootstrap {
+++ if bootstrap && ver < Version::parse("1.50.0").unwrap() {
++ println!("cargo:rustc-env=RUSTC_BOOTSTRAP=1");
++ }
++ }

www-client/seamonkey/seamonkey-2.53.7.1-r1.ebuild

@@ -195,6 +195,8 @@ src_prepare() {
  # https://github.com/JustOff/github-wc-polyfill/issues/10
  eapply "${FILESDIR}/${PN}-2.53.7.1-cpu_hog_fix.patch"
 
+ eapply "${FILESDIR}/${PN}-2.53.7.1-rust-1.52.patch" #789981
+
  # Shell scripts sometimes contain DOS line endings; bug 391889
  grep -rlZ --include="*.sh" $'\r$' . |
  while read -r -d $'\0' file ; do