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-rw-r--r--strata/build-essential/stage2-gcc.morph28
1 files changed, 28 insertions, 0 deletions
diff --git a/strata/build-essential/stage2-gcc.morph b/strata/build-essential/stage2-gcc.morph
index e342d648..bf6378c1 100644
--- a/strata/build-essential/stage2-gcc.morph
+++ b/strata/build-essential/stage2-gcc.morph
@@ -1,7 +1,25 @@
name: stage2-gcc
kind: chunk
+
configure-commands:
- mkdir o
+
+# In other projects we specify the sysroot location using CPPFLAGS. Here,
+# that breaks because GCC compiles stuff for the *build* machine, too ...
+# and this requires using the host's compiler, which cannot use the same
+# set of CPPFLAGS as the target. If we specify the sysroot using CC instead
+# then we don't interfere, because we are only specifying the *host* C
+# compiler.
+#
+# Configure flag notes:
+# 1. It's vital that this compiler targets the bootstrap machine
+# (TARGET_STAGE1) so that the stage 1 GCC is used instead of the
+# compiler of the build machine.
+# 2. Disable searching /usr/local/include for headers
+# 3. This flag causes the correct --sysroot flag to be passed when calling
+# stage 1 GCC.
+# 4. C++ is built in stage 3.
+# 5. Standard flags. See gcc.morph.
- |
export STAGE2_SYSROOT="$(dirname $(pwd))"
export CC="$TARGET_STAGE1-gcc --sysroot=$STAGE2_SYSROOT"
@@ -22,12 +40,22 @@ configure-commands:
--without-cloog --without-ppl \
--with-mpfr-include="$(pwd)/../mpfr/src" \
--with-mpfr-lib="$(pwd)/mpfr/src/.libs"
+
build-commands:
- |
export STAGE2_SYSROOT="$(dirname $(pwd))"
cd o && make
+
install-commands:
- cd o && make DESTDIR="$DESTDIR" install
+
+# Stage 3 builds need to link against this file in the location that
+# it will be in the final system, so we make a temporary link now.
+#
+# On x86_64 GCC resolutely installs its libraries into lib64. To fix this
+# would require hobbling the MULTILIB_OSDIRNAMES field in
+# gcc/config/i386/t-linux64 and this might break things, so for now we
+# tolerate the inconsistency.
- |
if [ "$(echo $TARGET | cut -c -6)" = "x86_64" ]; then
libdir=lib64