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Handle a missing c++ too.

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This commit is contained in:
Wayne Davison
2020-06-18 17:02:46 -07:00
parent 7fd24bef0f
commit a93eb4cf38
1 changed files with 15 additions and 10 deletions
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25
configure.ac
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@@ -203,9 +203,9 @@ AC_ARG_ENABLE(simd,
if test x"$enable_simd" != x"no"; then
# For x86-64 SIMD, g++ >=5 or clang++ >=7 is required
if test x"$build_cpu" = x"x86_64"; then
CXX_OK=
if test x"$CXX" != x""; then
CXX_OK=
CXX_VERSION=`$CXX --version | head -n 1`
CXX_VERSION=`$CXX --version 2>/dev/null | head -n 1`
case "$CXX_VERSION" in
g++*)
CXX_VERSION=`$CXX -dumpversion | sed 's/\..*//g'`
@@ -220,16 +220,21 @@ if test x"$enable_simd" != x"no"; then
CXX_OK=yes
fi
;;
*)
CXX_VERSION='Unknown'
;;
esac
if test x"$CXX_OK" = x"yes"; then
# AC_MSG_RESULT() is called below.
SIMD="$SIMD x86_64"
else
AC_MSG_RESULT(error)
AC_MSG_ERROR([Failed to find g++ >=5 or clang++ >=7 for SIMD optimizations.
else
CXX='No c++'
CXX_VERSION='Unknown'
fi
if test x"$CXX_OK" = x"yes"; then
# AC_MSG_RESULT() is called below.
SIMD="$SIMD x86_64"
else
AC_MSG_RESULT(error)
AC_MSG_ERROR([Failed to find g++ >=5 or clang++ >=7 for SIMD optimizations.
Specify --disable-simd to continue without it. ($CXX, $CXX_VERSION)])
fi
fi
elif test x"$enable_simd" = x"yes"; then
AC_MSG_RESULT(unavailable)