1 files changed, 126 insertions, 0 deletions
diff --git a/build-support/gcc11/PKGBUILD b/build-support/gcc11/PKGBUILD
new file mode 100644
index 00000000..4386fa71
--- /dev/null
+++ b/build-support/gcc11/PKGBUILD
@@ -0,0 +1,126 @@
+# remove tsan (thread sanitizer) plugin, not available for i686
+pkgname=(
+  $(
+    printf '%s\n' "${pkgname[@]}" | \
+      grep -vFx 'lib32-gcc-libs'
+  )
+)
+unset -f 'package_lib32-gcc-libs'
+eval "$(
+  declare -f prepare | \
+    sed '
+      \,/s/lib64/lib/, d
+    '
+  declare -f build | \
+    sed '
+      /configure/ s/--enable-multilib/--disable-multilib/
+      /configure/ s,--with-bugurl=https://bugs\.archlinux\.org/,--with-bugurl=https://bugs.archlinux32.org/,
+      /configure/ s/;$/ --build=$CHOST;/
+    '
+  declare -f package_gcc11-libs | \
+    sed '
+      s/\$pkgname-multilib//
+      s@libsanitizer/{a,l,ub,t}san@libsanitizer/{a,l,ub}san@
+      /provides=/s/libtsan.so//
+      \@/usr/lib32/@ d
+    '
+  declare -f package_gcc11 | \
+    sed '
+      s/"lib32-gcc-libs[^"]*"//g
+      s@make.*tsan.*install@#\0@
+    '
+)"
+eval "$(
+  for name in "${pkgname[@]}"; do
+    declare -f package_${name} | \
+      sed '
+        s/$pkgname-multilib//
+        s/{,32}//
+        \,/lib32/,d
+        \,/32/,d
+      '
+  done
+)"
+
+# i486-specific
+
+# no ADA
+makedepends=(${makedepends[@]//gcc-ada/})
+makedepends_i686+=('gcc-ada')
+makedepends_pentium4+=('gcc-ada')
+
+if [ "${CARCH}" = "i486" ]; then
+  package_gcc11-ada() {
+    touch "$pkgdir/this-is-a-dummy-package"
+  }
+
+  eval "$(
+    declare -f build | \
+      sed '
+        /enable-languages/ s/,ada//
+      '
+  )"
+
+  eval "$(
+    declare -f package_gcc11 | \
+      sed '
+        s/,gnat-style,gnat_rm,gnat_ugn//
+      '
+  )"
+
+  # building toolchain (gcc): again, lobtool problems
+  # /usr/lib/gcc/i486-pc-linux-gnu/7.3.0/ld: cannot find -lquadmath
+  # collect2: error: ld returned 1 exit status
+  # libtool: install: error: relink `libgfortran.la' with the above command before installing it
+  # make: Leaving directory '/build/gcc/src/gcc-build/i486-pc-linux-gnu/libgfortran'
+  # => wrong link order: libgfortran requires libquadmath
+  eval "$(
+    declare -f package_gcc11-libs | \
+      sed '
+        /for lib in / s/libgfortran/libquadmath libgfortran/
+      '
+  )"
+
+  # disable CET (Control Flow instructions endbr32/enbr64)
+  eval "$(
+    declare -f build | \
+      sed '
+        s/--enable-cet=auto/--disable-cet/
+      '
+  )"
+
+else
+
+  # force enable CET (Control Flow instructions endbr32/enbr64)
+  eval "$(
+    declare -f build | \
+      sed '
+        s/--enable-cet=auto/--enable-cet/
+      '
+  )"
+
+fi
+
+makedepends=(${makedepends[@]//lib32-glibc/})
+makedepends=(${makedepends[@]//lib32-gcc-libs/})
+
+# i486-specific: disable PGO/LTO build, uses too much resources,
+# also disabling LTO for now
+if [ "${CARCH}" = "i486" ]; then
+  eval "$(
+    declare -f build | \
+      sed '
+        s/--enable-pgo-build=.*/--disable-pgo-build/
+        s/--enable-lto/--disable-lto/
+        s/--with-build-config=bootstrap-lto//
+      '
+    declare -f package_gcc11 | \
+      sed '
+        /make.*lto-plugin.*install/d
+        /ln.*liblto_plugin.so/d
+      '
+  )"
+fi
+
+# tons of stuff fails anyway
+unset check