Make publishing libthemis-src easier

Makefile

@@ -240,8 +240,10 @@ endif
 ifndef ERROR
 include src/soter/soter.mk
 include src/themis/themis.mk
+ifndef CARGO
 include jni/themis_jni.mk
 endif
+endif
 
 JSTHEMIS_PACKAGE_VERSION=$(shell cat src/wrappers/themis/jsthemis/package.json \
   | grep version \
@@ -337,8 +339,10 @@ $(AUD_PATH)/%: $(SRC_PATH)/%
 	@echo -n "compile "
 	@$(BUILD_CMD)
 
+ifndef CARGO
 include tests/test.mk
 include tools/afl/fuzzy.mk
+endif
 
 err: ; $(ERROR)
 

src/wrappers/themis/rust/libthemis-src/Cargo.toml

@@ -10,6 +10,15 @@ readme = "README.md"
 keywords = ["crypto", "Themis"]
 categories = ["development-tools::build-utils"]
 license = "Apache-2.0"
+include = [
+    "/LICENSE",
+    "/Cargo.toml",
+    "/src/**/*",
+    "/themis/LICENSE",
+    "/themis/Makefile",
+    "/themis/src/soter/**/*",
+    "/themis/src/themis/**/*",
+]
 
 [badges]
 circle-ci = { repository = "cossacklabs/themis", branch = "master" }

src/wrappers/themis/rust/libthemis-src/src/lib.rs

@@ -49,6 +49,9 @@ use std::fs;
 use std::path::{Path, PathBuf};
 use std::process::{Command, Stdio};
 
+// Compile-time check for that we really bundle Themis source code.
+const _THEMIS_MAKEFILE: &[u8] = include_bytes!("../themis/Makefile");
+
 /// A builder (literally!) for Themis, produces [`Library`].
 ///
 /// [`Library`]: struct.Library.html