forked from enlightenment/efl
autotools: make it possible to forcibly disable neon.
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0b97c11ea2
commit
79c4baf1cc
47
configure.ac
47
configure.ac
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@ -477,6 +477,17 @@ build_cpu_sse3="no"
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build_cpu_altivec="no"
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build_cpu_neon="no"
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want_neon="yes"
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AC_ARG_ENABLE([neon],
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[AC_HELP_STRING([--disable-neon], [disable neon support @<:@default=enable@:>@])],
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[
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if test "x${enableval}" = "xyes"; then
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want_neon="yes"
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else
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want_neon="no"
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fi
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])
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SSE3_CFLAGS=""
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ALTIVEC_CFLAGS=""
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NEON_CFLAGS=""
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@ -541,23 +552,25 @@ case $host_cpu in
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fi
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;;
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arm*)
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build_cpu_neon="yes"
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AC_MSG_CHECKING([whether to use NEON instructions])
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CFLAGS_save="${CFLAGS}"
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CFLAGS="${CFLAGS} -mfpu=neon"
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AC_TRY_COMPILE([#include <arm_neon.h>],
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[asm volatile ("vqadd.u8 d0, d1, d0\n")],
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[
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AC_MSG_RESULT([yes])
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AC_DEFINE([BUILD_NEON], [1], [Build NEON Code])
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build_cpu_neon="yes"
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NEON_CFLAGS="-mfpu=neon"
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],
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[
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AC_MSG_RESULT([no])
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build_cpu_neon="no"
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])
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CFLAGS="${CFLAGS_save}"
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if test "x${want_neon}" = "xyes"; then
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build_cpu_neon="yes"
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AC_MSG_CHECKING([whether to use NEON instructions])
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CFLAGS_save="${CFLAGS}"
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CFLAGS="${CFLAGS} -mfpu=neon"
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AC_TRY_COMPILE([#include <arm_neon.h>],
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[asm volatile ("vqadd.u8 d0, d1, d0\n")],
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[
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AC_MSG_RESULT([yes])
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AC_DEFINE([BUILD_NEON], [1], [Build NEON Code])
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build_cpu_neon="yes"
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NEON_CFLAGS="-mfpu=neon"
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],
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[
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AC_MSG_RESULT([no])
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build_cpu_neon="no"
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])
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CFLAGS="${CFLAGS_save}"
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fi
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;;
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esac
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