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author | Pedro Alvarez <pedro.alvarez@codethink.co.uk> | 2014-10-19 08:25:33 +0000 |
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committer | Pedro Alvarez <pedro.alvarez@codethink.co.uk> | 2014-11-04 11:09:09 +0000 |
commit | 52cf9a0153c14df4f6ae3bd0e1e6cc5d171e586c (patch) | |
tree | caf2716f5542b4ab7267c2bdfbe40c8274ffac63 | |
parent | b8079dd0d360648e4e8de48656c5c38972621072 (diff) | |
download | glibc-52cf9a0153c14df4f6ae3bd0e1e6cc5d171e586c.tar.gz |
Add stage2-glibc-fix-specs scriptbaserock/pedroalvarez/build-essentialbaserock/glibc-2.20
-rw-r--r-- | stage2-glibc-fix-specs | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/stage2-glibc-fix-specs b/stage2-glibc-fix-specs new file mode 100644 index 0000000000..62af02bcaf --- /dev/null +++ b/stage2-glibc-fix-specs @@ -0,0 +1,38 @@ +#!/bin/sh + +# Fix up GCC to handle the sysroot containing glibc 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. + +set -eu + +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" |