configure detects which set of prebuilt binaries to use

* configure.ac: Use detected endianness and word size to automatically
  select which set of prebuilt binaries to use.
* meta/build-env.in (top_builddir):
* meta/uninstalled-env.in (top_builddir): Update to use
  SCM_PREBUILT_BINARIES for prebuilt entry in GUILE_LOAD_COMPILED_PATH.
* prebuilt/32-bit-big-endian:
* prebuilt/32-bit-little-endian:
* prebuilt/64-bit-little-endian: New links.
* prebuilt/x86_64-pc-linux-gnu: Remove this link now that it's unneeded.

4 files changed, 3 insertions, 1 deletions

diff --git a/prebuilt/32-bit-big-endian b/prebuilt/32-bit-big-endian
new file mode 120000
index 000000000..3b619a6a1
--- /dev/null
+++ b/prebuilt/32-bit-big-endian
@@ -0,0 +1 @@
+mips-unknown-linux-gnu
\ No newline at end of file
diff --git a/prebuilt/32-bit-little-endian b/prebuilt/32-bit-little-endian
new file mode 120000
index 000000000..63f12a0b3
--- /dev/null
+++ b/prebuilt/32-bit-little-endian
@@ -0,0 +1 @@
+i686-pc-linux-gnu
\ No newline at end of file
diff --git a/prebuilt/64-bit-little-endian b/prebuilt/64-bit-little-endian
new file mode 120000
index 000000000..8dd176f8b
--- /dev/null
+++ b/prebuilt/64-bit-little-endian
@@ -0,0 +1 @@
+x86_64-unknown-linux-gnu
\ No newline at end of file
diff --git a/prebuilt/x86_64-pc-linux-gnu b/prebuilt/x86_64-pc-linux-gnu
deleted file mode 120000
index 7ef2cbd31..000000000
--- a/prebuilt/x86_64-pc-linux-gnu
+++ /dev/null
@@ -1 +0,0 @@
-./x86_64-unknown-linux-gnu
\ No newline at end of file