lziprecover fails to build on riscv64

[Heinrich Schuchardt]

LP 2103944 removed the riscv64 binary instead of fixing the failure of lziprecover on riscv64.

In the upstream code the following diff is sufficient to resolve the problem incorrect relocations:

diff --git a/configure b/configure
index 1412da6..64f3292 100755
--- a/configure
+++ b/configure
@@ -27,6 +27,15 @@ LDFLAGS=
 LIBS=-lpthread
 MAKEINFO=makeinfo

+# Detect the architecture
+arch=$(uname -m)
+
+# Add architecture specific build flags.
+if [ "$arch" = "riscv64" ]; then
+ echo "Detected RISC-V architecture (riscv64)."
+ CXXFLAGS="$CXXFLAGS -mcmodel=medany -mexplicit-relocs"
+fi
+
 # checking whether we are using GNU C++.
 /bin/sh -c "${CXX} --version" > /dev/null 2>&1 || { CXX=c++ ; CXXFLAGS=-O2 ; }