add CMake option to toggle tests (on by default)

CMakeLists.txt

@@ -12,6 +12,7 @@ endif ()
 
 option(FMT_PEDANTIC "Enable extra warnings and expensive tests." OFF)
 option(FMT_INSTALL "Generate install target." ON)
+option(FMT_TESTS "Generate tests." ON)
 
 project(FORMAT)
 
@@ -108,88 +109,92 @@ endif ()
 if (CPP11_FLAG AND FMT_PEDANTIC)
   set(FMT_EXTRA_COMPILE_FLAGS "${FMT_EXTRA_COMPILE_FLAGS} ${CPP11_FLAG}")
   # Test compilation with default flags.
-  file(GLOB src RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} test/*.cc test/*.h)
-  add_library(testformat STATIC ${FMT_SOURCE_FILES} ${src})
+  if (FMT_TESTS)
+    file(GLOB src RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} test/*.cc test/*.h)
+    add_library(testformat STATIC ${FMT_SOURCE_FILES} ${src})
+  endif ()
 endif ()
 
 set_target_properties(cppformat
   PROPERTIES COMPILE_FLAGS "${FMT_EXTRA_COMPILE_FLAGS}")
 
 add_subdirectory(doc)
 
-include_directories(. gmock)
-
-# We compile Google Test ourselves instead of using pre-compiled libraries.
-# See the Google Test FAQ "Why is it not recommended to install a
-# pre-compiled copy of Google Test (for example, into /usr/local)?"
-# at http://code.google.com/p/googletest/wiki/FAQ for more details.
-
-add_library(gmock STATIC
-  gmock/gmock-gtest-all.cc gmock/gmock/gmock.h
-  gmock/gtest/gtest.h gmock/gtest/gtest-spi.h)
-find_package(Threads)
-if (Threads_FOUND)
-  target_link_libraries(gmock ${CMAKE_THREAD_LIBS_INIT})
-else ()
-  target_compile_definitions(gmock PUBLIC GTEST_HAS_PTHREAD=0)
-endif ()
-
-# Check if variadic templates are working and not affected by GCC bug 39653:
-# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39653
-check_cxx_source_compiles("
-  template <class T, class ...Types>
-  struct S { typedef typename S<Types...>::type type; };
-  int main() {}" FMT_VARIADIC_TEMPLATES)
-
-# Check if initializer lists are supported.
-check_cxx_source_compiles("
-  #include <initializer_list>
-  int main() {}" FMT_INITIALIZER_LIST)
+if (FMT_TESTS)
+  include_directories(. gmock)
 
-if (NOT FMT_VARIADIC_TEMPLATES OR NOT FMT_INITIALIZER_LIST)
-  add_definitions(-DGTEST_LANG_CXX11=0)
-endif ()
-
-# This is disabled at the moment because format is compiled without -std=c++11
-# by default.
-#check_cxx_source_compiles("
-#  void f() noexcept {}
-#  int main(){ f(); }" FMT_BASIC_NOEXCEPT_SUPPORT)
-#if (FMT_BASIC_NOEXCEPT_SUPPORT)
-#  add_definitions(-DFMT_USE_NOEXCEPT=1)
-#endif ()
-
-#check_cxx_source_compiles("
-#  struct C{
-#    C()=delete;
-#    C(const C&)=delete;
-#    C& operator=(const C&)=delete;
-#  };
-#  int main(){}" FMT_DELETED_FUNCTIONS)
-#if (FMT_DELETED_FUNCTIONS)
-#  add_definitions(-DFMT_USE_DELETED_FUNCTIONS=1)
-#endif ()
-
-#check_cxx_source_compiles("
-#  static_assert(true, \"\");
-#  int main(){}" FMT_STATIC_ASSERT)
-#if (FMT_STATIC_ASSERT)
-#  add_definitions(-DFMT_USE_STATIC_ASSERT=1)
-#endif ()
-
-# Workaround a bug in implementation of variadic templates in MSVC11.
-if (MSVC)
-  target_compile_definitions(gmock PUBLIC _VARIADIC_MAX=10)
-endif ()
-
-# GTest doesn't detect <tuple> with clang.
-if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-  target_compile_definitions(gmock PUBLIC GTEST_USE_OWN_TR1_TUPLE=1)
+  # We compile Google Test ourselves instead of using pre-compiled libraries.
+  # See the Google Test FAQ "Why is it not recommended to install a
+  # pre-compiled copy of Google Test (for example, into /usr/local)?"
+  # at http://code.google.com/p/googletest/wiki/FAQ for more details.
+
+  add_library(gmock STATIC
+    gmock/gmock-gtest-all.cc gmock/gmock/gmock.h
+    gmock/gtest/gtest.h gmock/gtest/gtest-spi.h)
+  find_package(Threads)
+  if (Threads_FOUND)
+    target_link_libraries(gmock ${CMAKE_THREAD_LIBS_INIT})
+  else ()
+    target_compile_definitions(gmock PUBLIC GTEST_HAS_PTHREAD=0)
+  endif ()
+
+  # Check if variadic templates are working and not affected by GCC bug 39653:
+  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39653
+  check_cxx_source_compiles("
+    template <class T, class ...Types>
+    struct S { typedef typename S<Types...>::type type; };
+    int main() {}" FMT_VARIADIC_TEMPLATES)
+
+  # Check if initializer lists are supported.
+  check_cxx_source_compiles("
+    #include <initializer_list>
+    int main() {}" FMT_INITIALIZER_LIST)
+
+  if (NOT FMT_VARIADIC_TEMPLATES OR NOT FMT_INITIALIZER_LIST)
+    add_definitions(-DGTEST_LANG_CXX11=0)
+  endif ()
+
+  # This is disabled at the moment because format is compiled without -std=c++11
+  # by default.
+  #check_cxx_source_compiles("
+  #  void f() noexcept {}
+  #  int main(){ f(); }" FMT_BASIC_NOEXCEPT_SUPPORT)
+  #if (FMT_BASIC_NOEXCEPT_SUPPORT)
+  #  add_definitions(-DFMT_USE_NOEXCEPT=1)
+  #endif ()
+
+  #check_cxx_source_compiles("
+  #  struct C{
+  #    C()=delete;
+  #    C(const C&)=delete;
+  #    C& operator=(const C&)=delete;
+  #  };
+  #  int main(){}" FMT_DELETED_FUNCTIONS)
+  #if (FMT_DELETED_FUNCTIONS)
+  #  add_definitions(-DFMT_USE_DELETED_FUNCTIONS=1)
+  #endif ()
+
+  #check_cxx_source_compiles("
+  #  static_assert(true, \"\");
+  #  int main(){}" FMT_STATIC_ASSERT)
+  #if (FMT_STATIC_ASSERT)
+  #  add_definitions(-DFMT_USE_STATIC_ASSERT=1)
+  #endif ()
+
+  # Workaround a bug in implementation of variadic templates in MSVC11.
+  if (MSVC)
+    target_compile_definitions(gmock PUBLIC _VARIADIC_MAX=10)
+  endif ()
+
+  # GTest doesn't detect <tuple> with clang.
+  if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    target_compile_definitions(gmock PUBLIC GTEST_USE_OWN_TR1_TUPLE=1)
+  endif ()
+
+  enable_testing()
+  add_subdirectory(test)
 endif ()
 
-enable_testing()
-add_subdirectory(test)
-
 set(CPACK_PACKAGE_VERSION_MAJOR 1)
 set(CPACK_PACKAGE_VERSION_MINOR 2)
 set(CPACK_PACKAGE_VERSION_PATCH 0)