fix submodule recurse init

Author: rmorozov

.travis.yml

@@ -1,54 +1,54 @@
---- 
+---
 dist: xenial
 language: cpp
 sudo: required
 
-matrix: 
-  include: 
-    - 
+matrix:
+  include:
+    -
       compiler: clang
       env: COMPILER='clang++'
       os: osx
       osx_image: xcode9
-    - 
+    -
       compiler: clang
       env: COMPILER='clang++'
       os: osx
       osx_image: xcode10
-    - 
+    -
       compiler: clang
       env: COMPILER='clang++'
       os: osx
       osx_image: xcode11
-    - 
-      addons: 
-        apt: 
-          packages: 
+    -
+      addons:
+        apt:
+          packages:
             - cmake
             - g++-6
             - lcov
-          sources: 
+          sources:
             - ubuntu-toolchain-r-test
       compiler: gcc
       env: "COMPILER=g++-6 COLLECT_COVERAGE=1"
       os: linux
-    - 
-      addons: 
-        apt: 
-          packages: 
+    -
+      addons:
+        apt:
+          packages:
             - cmake
             - clang-8
             - g++-8
-          sources: 
+          sources:
             - ubuntu-toolchain-r-test
             - llvm-toolchain-xenial-8
       compiler: clang
       env: "COMPILER=clang++-8 EXTRA_FLAGS=-DJINJA2CPP_CXX_STANDARD=17 SANITIZE_BUILD=address+undefined"
       os: linux
-before_install: 
+before_install:
   - "date -u"
   - "uname -a"
-script: 
+script:
   - "export BUILD_TARGET=\"all\""
   - "export CMAKE_OPTS=\"-DCMAKE_VERBOSE_MAKEFILE=OFF\""
   - "if [[ \"${COMPILER}\" != \"\" ]]; then export CXX=${COMPILER}; fi"
@@ -59,7 +59,7 @@ script:
   - "mkdir -p build && cd build"
   - "cmake $CMAKE_OPTS -DCMAKE_BUILD_TYPE=$BUILD_CONFIG -DCMAKE_CXX_FLAGS=$CMAKE_CXX_FLAGS -DJINJA2CPP_DEPS_MODE=internal $EXTRA_FLAGS .. && cmake --build . --config $BUILD_CONFIG --target all -- -j4"
   - "ctest -C $BUILD_CONFIG -V"
-after_success: 
+after_success:
   - "if [[ \"${COLLECT_COVERAGE}\" != \"\" ]]; then echo \"Uploading code coverate report\" ; fi"
   - "if [[ \"${COLLECT_COVERAGE}\" != \"\" ]]; then lcov --directory . --capture --output-file coverage.info ; fi"
   - "if [[ \"${COLLECT_COVERAGE}\" != \"\" ]]; then lcov --remove coverage.info '/usr/*' --output-file coverage.info ; fi"

thirdparty/CMakeLists.txt

@@ -17,8 +17,10 @@ endif ()
 
 function(update_submodule submodule)
     find_package(Git REQUIRED)
-    execute_process(COMMAND ${GIT_EXECUTABLE} submodule update --init thirdparty/${submodule}
-        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}")
+    execute_process(
+        COMMAND ${GIT_EXECUTABLE} submodule update --init --recursive thirdparty/${submodule}
+        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
+    )
 endfunction()
 
 function(imported_target_alias ALIAS)