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configure.ac: correctly manage llvm auto-detection

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Earlier refactoring commits changed from one, dare I say it, broken
behaviour to another. Namely:

Before, as you explicitly --enable-gallium-llvm your selection was
ignored when llvm-config was not present/detected.
Today, the "auto" heuristics enables gallium llvm regardless if you have
llvm/llvm-config available or not.

Rework the auto-detection to attribute for llvm's presence.

v2: Set enable_gallium_llvm=no when LLVM is not found.

Cc: "17.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Tobias Droste <tdroste@gmx.de>
Reported-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Tested-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
(cherry picked from commit d4840c0c26)
This commit is contained in:
Emil Velikov 2017-01-18 13:54:04 +00:00 • committed by Emil Velikov
parent edecfda23f
commit e81e284611
1 changed files with 8 additions and 4 deletions
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12
configure.ac
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@ -1744,10 +1744,14 @@ AC_ARG_ENABLE([gallium-llvm],
[enable_gallium_llvm=auto])
if test "x$enable_gallium_llvm" = xauto; then
case "$host_cpu" in
i*86|x86_64|amd64) enable_gallium_llvm=yes;;
*) enable_gallium_llvm=no;;
esac
if test "x$FOUND_LLVM" = xyes; then
case "$host_cpu" in
i*86|x86_64|amd64) enable_gallium_llvm=yes;;
*) enable_gallium_llvm=no;;
esac
else
enable_gallium_llvm=no
fi
fi
if test "x$enable_gallium_llvm" = xyes -a "x$FOUND_LLVM" = xno; then