This fixes PR16724.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191289
91177308-0d34-0410-b5e6-
96231b3b80d8
dnl Default to empty (i.e. assigning the null string to) CFLAGS and CXXFLAGS,
dnl instead of the autoconf default (for example, '-g -O2' for CC=gcc).
-${CFLAGS=}
-${CXXFLAGS=}
+: ${CFLAGS=}
+: ${CXXFLAGS=}
dnl We need to check for the compiler up here to avoid anything else
dnl starting with a different one.
fi
fi
-${CFLAGS=}
-${CXXFLAGS=}
+: ${CFLAGS=}
+: ${CXXFLAGS=}
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'