From 6581889c74e00b2071f2b750cf2998d599c30df7 Mon Sep 17 00:00:00 2001 From: Olaf Hering Date: Fri, 1 Apr 2016 12:27:16 +0200 Subject: [PATCH] build: link with libatomic on powerpc-linux Building on powerpc-linux fails with undefined reference to __atomic_load_8 in icount_warp_rt(). Force linking to -latomic. Fixes a0aa44b ("include/qemu/atomic.h: default to __atomic functions") Signed-off-by: Olaf Hering --- configure | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/configure b/configure index b882d19..dfd37b1 100755 --- a/configure +++ b/configure @@ -4049,6 +4049,33 @@ if test "$usb_redir" != "no" ; then fi fi +if test "$linux_user" = "no" -a "$cpu" = "ppc" -a "$targetos" = "Linux" ; then + # Do we need libm + cat > $TMPC << EOF + #include + #include + #include + int64_t val; + int main(int argc, char **argv) + { + val = (int64_t)read(0, NULL, 0); + if (atomic_read(&val) == -1) { + return 0; + } + return 1; + } +EOF + if compile_prog "-Iinclude" "" ; then + : + echo "No need to link with -latomic on powerpc-linux" + elif compile_prog "-Iinclude" "-latomic" ; then + echo "Link with -latomic on powerpc-linux" + libs_softmmu="$libs_softmmu -latomic" + else + error_exit "libatomic check failed" + fi +fi + ########################################## # check if we have VSS SDK headers for win -- 2.7.4