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Building for different architectures
====================================
As of version 147+dfsg-3, the ares package is split into two binaries,
ares-simd and ares-no-simd that are installed in /usr/libexec/ares/. Which of
these two are built, and the nature of the file at /usr/bin/ares, depends on
the architecture:
amd64
-----
Both binaries are built i.e. the dh sequence is run twice. The x86-64-v2
baseline is requred to run ares-simd. /usr/bin/ares is a launcher script that
queries /lib64/ld-linux-x86-64.so.2 for x86-64-v2 support and selects the
appropriate binary automatically.
arm64
-----
ares-simd requires NEON support. Since this is guaranteed by the arm64 baseline
only ares-simd is built. /usr/bin/ares is a symlink to
/usr/libexec/ares/ares-simd.
all other architectures
-----------------------
Only ares-no-simd is built. /usr/bin/ares is a symlink to
/usr/libexec/ares/ares-no-simd.
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