rust: do not rebuild stdlib when coverage is enabled

Because both seem incompatible for now

diff --git a/configure.ac b/configure.ac
index f1f316f3f1ce54ea8df9d876605a1495c1904e93..604bcc1125ac040c7fbc782fbbec3428519476ad 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -2626,7 +2626,7 @@ fi
     AC_ARG_ENABLE(fuzztargets,
         AS_HELP_STRING([--enable-fuzztargets], [Enable fuzz targets]),[enable_fuzztargets=$enableval],[enable_fuzztargets=no])
     AM_CONDITIONAL([BUILD_FUZZTARGETS], [test "x$enable_fuzztargets" = "xyes"])
-    AM_CONDITIONAL([RUST_BUILD_STD], [test "x$enable_fuzztargets" = "xyes" && echo "$rust_compiler_version" | grep -q nightly])
+    AM_CONDITIONAL([RUST_BUILD_STD], [test "x$enable_fuzztargets" = "xyes" && echo "$rust_compiler_version" | grep -q nightly && echo "$RUSTFLAGS" | grep -v -q coverage])
     AC_PROG_CXX
     AS_IF([test "x$enable_fuzztargets" = "xyes"], [
         AS_IF([test "x$CARGO_BUILD_TARGET" = "x" && echo "$rust_compiler_version" | grep -q nightly], [