1 files changed, 94 insertions, 0 deletions
diff --git a/chunks/stage2-eglibc.morph b/chunks/stage2-eglibc.morph
new file mode 100644
index 00000000..7e7d6701
--- /dev/null
+++ b/chunks/stage2-eglibc.morph
@@ -0,0 +1,94 @@
+name: stage2-eglibc
+kind: chunk
+
+configure-commands:
+- mkdir o
+
+# Necessary for ARM port
+- cd libc && ln -s ../ports ports
+
+# Configure flag notes:
+#   1. Avoid installing to PREFIX/lib64 on x86_64.
+#   2. Location of linux-api-headers.
+#   3. Normal flags. See eglibc.morph.
+#   4. Force configuration values of certain things that can't be detected
+#      in a cross-compile.
+- |
+  export CFLAGS="-O2 $CFLAGS"
+  export CXX=false
+  case "$MORPH_ARCH" in
+  armv7*)
+      ARCH_CONFIG='--without-fp' ;;
+  esac
+  cd o && ../libc/configure \
+    $ARCH_CONFIG \
+    --build=$(../libc/scripts/config.guess) --host=$TARGET_STAGE1 \
+    --prefix="$PREFIX" \
+    `# [1]` --libdir="$PREFIX/lib" \
+    `# [2]` --with-headers="$(pwd)/../../$PREFIX/include" \
+    `# [3]` --disable-profile  --enable-kernel=2.6.25 \
+            --enable-add-ons=nptl,ports --without-cvs --without-selinux \
+    `# [4]` libc_cv_c_cleanup=yes libc_cv_ctors_header=yes \
+            libc_cv_forced_unwind=yes libc_cv_ssp=no
+
+build-commands:
+- cd o && make localtime=UTC
+
+install-commands:
+- cd o && make install_root="$DESTDIR" localtime=UTC install
+
+# Fix up GCC to handle the sysroot containing eglibc being in a different
+# location for each chunk build.
+#
+# For headers, it's enough to pass -B in the CPPFLAGS. This would work for
+# the startup files (crt*.o) as well, except where libtool is involved (in
+# which case it strips -B out of your LDFLAGS before calling GCC). We get
+# around this by making GCC locate them relative to the environment variable
+# STAGE2_SYSROOT, which we can then set along with CPPFLAGS in each stage 2
+# chunk build.
+#
+# We also force the use of the program loader at PREFIX/lib/ld.so instead
+# of its usual home in /lib or /lib64, which is necessary for the output of
+# stage 2 to work as a chroot when building stage 3.
+- |
+  sysroot="$(dirname "$(pwd)")"
+  specs_dir="$(dirname $($TARGET_STAGE1-gcc --print-libgcc-file-name))"
+  target_specs_dir="$DESTDIR/${specs_dir#$sysroot}"
+  mkdir -p "$target_specs_dir"
+  $TARGET_STAGE1-gcc -dumpspecs |
+      sed -e "s@[gMS]\?crt[1in].o%s@%:getenv(STAGE2_SYSROOT $PREFIX/lib/&)@g" \
+          -e "s@/lib\(64\)\?/ld@$PREFIX/lib/ld@g" \
+      > "$target_specs_dir/specs-for-sysroot"
+  
+  # NASTY HACK #
+  # We create a symlink to the actual specs here, so that later the
+  # symlink can be replaced with a dangling link.
+  #
+  # This is necessary as we need to have gcc use its internal specs,
+  # which can differ to the specs generated by `gcc -dumpspecs`.
+  #
+  # The dangling symlink will not make it onto the final system, just
+  # like all other bootstrap only components.
+  ln -s specs-for-sysroot "$target_specs_dir/specs"
+
+# Install a symlink for the program interpreter (ld.so) so that binaries
+# built in stage 3 before the stage 3 eglibc is built can use it.
+# FIXME: get a better way of finding the name of the loader. The lib64
+# path is hardcoded into eglibc in the file
+# sysdeps/unix/sysv/linux/configure.
+- install -d $DESTDIR/lib
+- |
+  cpu=$(echo $TARGET | cut -d '-' -f 1)
+  case "$cpu" in
+  x86_64)
+    install -d "$DESTDIR/lib64"
+    ln -s "$PREFIX/lib/ld-linux-x86-64.so.2" \
+          "$DESTDIR/lib64/ld-linux-x86-64.so.2" ;;
+  ppc64)
+    install -d "$DESTDIR/lib64"
+    ln -s "$PREFIX/lib/ld64.so.1" \
+          "$DESTDIR/lib64/ld64.so.1" ;;
+  *)
+    loader=$(basename $(ls "$DESTDIR$PREFIX"/lib/ld-linux*))
+    ln -s "$PREFIX/lib/$loader" "$DESTDIR/lib/$loader"
+  esac