The variable extra_cflags needs to be quoted in config-host.mak, in particular because it might contain parentheses that would otherwise be interpreted by the shell when reloading the file.
For instance, if one wants to define some attribute with configure: ./configure --extra-cflags="-Dcoroutine_fn='__attribute__((coroutine_fn))'" A more robust approach would be to escape every variable properly, but there is no portable equivalent to bash's "printf %q" solution. The current patch, while not bullet-proof, works well in the common case. Signed-off-by: Gabriel Kerneis <gabr...@kerneis.info> --- configure | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/configure b/configure index e989609..23114de 100755 --- a/configure +++ b/configure @@ -3681,7 +3681,7 @@ if test "$mingw32" = "no" ; then echo "qemu_localstatedir=$local_statedir" >> $config_host_mak fi echo "qemu_helperdir=$libexecdir" >> $config_host_mak -echo "extra_cflags=$EXTRA_CFLAGS" >> $config_host_mak +echo "extra_cflags=\"$EXTRA_CFLAGS\"" >> $config_host_mak echo "extra_ldflags=$EXTRA_LDFLAGS" >> $config_host_mak echo "qemu_localedir=$qemu_localedir" >> $config_host_mak echo "libs_softmmu=$libs_softmmu" >> $config_host_mak -- 1.7.10.4
