FMT_EXTRA_TESTS -> FMT_PEDANTIC and use it to control extra warnings

support/appveyor-build.py

@@ -6,7 +6,7 @@ from subprocess import check_call
 
 build = os.environ['BUILD']
 config = os.environ['CONFIG']
-cmake_command = ['cmake', '-DFMT_EXTRA_TESTS=ON', '-DCMAKE_BUILD_TYPE=' + config]
+cmake_command = ['cmake', '-DFMT_PEDANTIC=ON', '-DCMAKE_BUILD_TYPE=' + config]
 if build == 'mingw':
   cmake_command.append('-GMinGW Makefiles')
   build_command = ['mingw32-make', '-j4']

support/cmake/biicode.cmake

@@ -13,6 +13,6 @@ endif ()
 if (CMAKE_COMPILER_IS_GNUCXX)
   target_compile_options(${BII_BLOCK_TARGET} INTERFACE -Wall -Wextra -Wshadow -pedantic)
 endif ()
-if (CPP11_FLAG AND FMT_EXTRA_TESTS)
+if (CPP11_FLAG AND FMT_PEDANTIC)
   target_compile_options(${BII_BLOCK_TARGET} INTERFACE ${CPP11_FLAG})
 endif ()