rust/mingw: build fixes

Fix path passed to cargo by using 'cygpath' if available.

configure.ac

@@ -75,6 +75,9 @@
     AC_PROG_MAKE_SET
     AC_PROG_GREP
 
+    AC_PATH_PROG(HAVE_CYGPATH, cygpath, "no")
+    AM_CONDITIONAL([HAVE_CYGPATH], [test "x$enable_cygpath" = "xyes"])
+
     AC_PATH_PROG(HAVE_PKG_CONFIG, pkg-config, "no")
     if test "$HAVE_PKG_CONFIG" = "no"; then
         echo
@@ -2527,6 +2530,14 @@ if test "$WINDOWS_PATH" = "yes"; then
     e_logfilesdir="$e_logdir\\\\files"
     e_logcertsdir="$e_logdir\\\\certs"
     e_datarulesdir="$e_winbase\\\\rules\\\\"
+    if test "$HAVE_CYGPATH" != "no"; then
+        # turn srcdir into abs path and convert to the
+        # mixed output (/c/Users/dev into  c:/Users/dev)
+        e_rustdir="$(cygpath -a -t mixed ${srcdir})/rust"
+    else
+        e_abs_srcdir=$(cd $srcdir && pwd)
+        e_rustdir="$e_abs_srcdir/rust"
+    fi
 else
     EXPAND_VARIABLE(localstatedir, e_logdir, "/log/suricata/")
     EXPAND_VARIABLE(localstatedir, e_rundir, "/run/")
@@ -2537,6 +2548,9 @@ else
     EXPAND_VARIABLE(localstatedir, e_localstatedir, "/run/suricata")
     EXPAND_VARIABLE(datadir, e_datarulesdir, "/suricata/rules")
     EXPAND_VARIABLE(ruledirprefix, e_defaultruledir, "/suricata/rules")
+
+    e_abs_srcdir=$(cd $srcdir && pwd)
+    EXPAND_VARIABLE(e_abs_srcdir, e_rustdir, "/rust")
 fi
 AC_SUBST(e_logdir)
 AC_SUBST(e_rundir)
@@ -2551,6 +2565,7 @@ AC_SUBST(e_magic_file_comment)
 AC_SUBST(e_enable_evelog)
 AC_SUBST(e_datarulesdir)
 AC_SUBST(e_defaultruledir)
+AC_SUBST(e_rustdir)
 AC_SUBST(has_suricata_update_comment)
 AC_SUBST(no_suricata_update_comment)
 

rust/Cargo.toml.in

@@ -4,7 +4,7 @@ version = "@PACKAGE_VERSION@"
 
 [lib]
 crate-type = ["staticlib"]
-path = "@abs_srcdir@/src/lib.rs"
+path = "@e_rustdir@/src/lib.rs"
 
 [profile.release]
 debug = true

rust/Makefile.am

@@ -33,11 +33,20 @@ all-local:
 if HAVE_PYTHON
 	cd $(top_srcdir)/rust && $(HAVE_PYTHON) ./gen-c-headers.py
 endif
+if HAVE_CYGPATH
+	rustpath=`cygpath -a -t mixed $(abs_top_builddir)`
+	cd $(top_srcdir)/rust && \
+		CARGO_HOME=$(CARGO_HOME) \
+		CARGO_TARGET_DIR="$$rustpath/rust/target" \
+		$(CARGO) build $(RELEASE) $(FROZEN) \
+			--features "$(RUST_FEATURES)"
+else
 	cd $(top_srcdir)/rust && \
 		CARGO_HOME=$(CARGO_HOME) \
 		CARGO_TARGET_DIR=$(abs_top_builddir)/rust/target \
 		$(CARGO) build $(RELEASE) $(FROZEN) \
 			--features "$(RUST_FEATURES)"
+endif
 
 clean-local:
 	-rm -rf target