[C][Client] Generate CMakeLists.txt for all C sample clients

The sample client defined in bin/configs/c.yaml has CMakeLists.txt in
its .openapi-generator-ignore. It's is the only C client that doesn't
(re-)generate CMakeLists.txt, the remaining two seem fine regardless.

samples/client/petstore/c/.openapi-generator-ignore

@@ -21,4 +21,3 @@
 #docs/*.md
 # Then explicitly reverse the ignore rule for a single file:
 #!docs/README.md
-CMakeLists.txt

samples/client/petstore/c/.openapi-generator/FILES

@@ -1,3 +1,4 @@
+CMakeLists.txt
 Config.cmake.in
 Packing.cmake
 README.md

samples/client/petstore/c/CMakeLists.txt

@@ -1,33 +1,67 @@
-cmake_minimum_required (VERSION 2.6)
-project (CGenerator)
+cmake_minimum_required (VERSION 2.6...3.10.2)
+project (CGenerator C)
 
 cmake_policy(SET CMP0063 NEW)
 
 set(CMAKE_C_VISIBILITY_PRESET default)
-set(CMAKE_CXX_VISIBILITY_PRESET default)
 set(CMAKE_VISIBILITY_INLINES_HIDDEN OFF)
-set(CMAKE_BUILD_TYPE Debug)
+set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
+set(CMAKE_C_FLAGS "-Werror=implicit-function-declaration -Werror=missing-declarations -Werror=int-conversion")
+
+option(BUILD_SHARED_LIBS "Build using shared libraries" ON)
+
+find_package(OpenSSL)
+
+if (OPENSSL_FOUND)
+    message (STATUS "OPENSSL found")
+
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DOPENSSL")
+    if(CMAKE_VERSION VERSION_LESS 3.4)
+        include_directories(${OPENSSL_INCLUDE_DIR})
+        include_directories(${OPENSSL_INCLUDE_DIRS})
+        link_directories(${OPENSSL_LIBRARIES})
+    endif()
+
+    message(STATUS "Using OpenSSL ${OPENSSL_VERSION}")
+else()
+    message (STATUS "OpenSSL Not found.")
+endif()
 
 set(pkgName "openapi_petstore")
 
-find_package(CURL 7.58.0 REQUIRED)
-if(CURL_FOUND)
-	include_directories(${CURL_INCLUDE_DIR})
-	set(PLATFORM_LIBRARIES ${PLATFORM_LIBRARIES} ${CURL_LIBRARIES} )
-else(CURL_FOUND)
-	message(FATAL_ERROR "Could not find the CURL library and development files.")
+# this default version can be overridden in PreTarget.cmake
+set(PROJECT_VERSION_MAJOR 0)
+set(PROJECT_VERSION_MINOR 0)
+set(PROJECT_VERSION_PATCH 1)
+
+if( (DEFINED CURL_INCLUDE_DIR) AND (DEFINED CURL_LIBRARIES))
+    include_directories(${CURL_INCLUDE_DIR})
+    set(PLATFORM_LIBRARIES ${PLATFORM_LIBRARIES} ${CURL_LIBRARIES} )
+else()
+    find_package(CURL 7.58.0 REQUIRED)
+    if(CURL_FOUND)
+        include_directories(${CURL_INCLUDE_DIR})
+        set(PLATFORM_LIBRARIES ${PLATFORM_LIBRARIES} ${CURL_LIBRARIES} )
+    else(CURL_FOUND)
+        message(FATAL_ERROR "Could not find the CURL library and development files.")
+    endif()
 endif()
 
 set(SRCS
     src/list.c
     src/apiKey.c
     src/apiClient.c
+    src/binary.c
     external/cJSON.c
     model/object.c
+    model/mapped_model.c
     model/api_response.c
+    model/bit.c
     model/category.c
+    model/model_with_set_propertes.c
     model/order.c
     model/pet.c
+    model/preference.c
     model/tag.c
     model/user.c
     api/PetAPI.c
@@ -39,13 +73,19 @@ set(SRCS
 set(HDRS
     include/apiClient.h
     include/list.h
+    include/binary.h
     include/keyValuePair.h
     external/cJSON.h
     model/object.h
+    model/any_type.h
+    model/mapped_model.h
     model/api_response.h
+    model/bit.h
     model/category.h
+    model/model_with_set_propertes.h
     model/order.h
     model/pet.h
+    model/preference.h
     model/tag.h
     model/user.h
     api/PetAPI.h
@@ -54,12 +94,75 @@ set(HDRS
 
 )
 
-# Add library with project file with projectname as library name
-add_library(${pkgName} SHARED ${SRCS} ${HDRS})
+include(PreTarget.cmake OPTIONAL)
+
+set(PROJECT_VERSION_STRING "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")
+
+# Add library with project file with project name as library name
+add_library(${pkgName} ${SRCS} ${HDRS})
 # Link dependent libraries
-target_link_libraries(${pkgName} ${CURL_LIBRARIES} )
-#install library to destination
-install(TARGETS ${pkgName} DESTINATION ${CMAKE_INSTALL_PREFIX})
+if(NOT CMAKE_VERSION VERSION_LESS 3.4)
+    target_link_libraries(${pkgName} PRIVATE OpenSSL::SSL OpenSSL::Crypto)
+endif()
+target_link_libraries(${pkgName} PUBLIC ${CURL_LIBRARIES} )
+target_include_directories(
+    ${pkgName} PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>
+    $<INSTALL_INTERFACE:include>
+)
+
+include(PostTarget.cmake OPTIONAL)
+
+# installation of libraries, headers, and config files
+if (NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/Config.cmake.in)
+    install(TARGETS ${pkgName} DESTINATION lib)
+else()
+    include(GNUInstallDirs)
+    install(TARGETS ${pkgName} DESTINATION lib EXPORT ${pkgName}Targets)
+
+    foreach(HDR_FILE ${HDRS})
+        get_filename_component(HDR_DIRECTORY ${HDR_FILE} DIRECTORY)
+        get_filename_component(ABSOLUTE_HDR_DIRECTORY ${HDR_DIRECTORY} ABSOLUTE)
+        file(RELATIVE_PATH RELATIVE_HDR_PATH ${CMAKE_CURRENT_SOURCE_DIR} ${ABSOLUTE_HDR_DIRECTORY})
+        install(FILES ${HDR_FILE} DESTINATION include/${pkgName}/${RELATIVE_HDR_PATH})
+    endforeach()
+
+    include(CMakePackageConfigHelpers)
+    write_basic_package_version_file(
+            "${CMAKE_CURRENT_BINARY_DIR}/${pkgName}/${pkgName}ConfigVersion.cmake"
+            VERSION "${PROJECT_VERSION_STRING}"
+            COMPATIBILITY AnyNewerVersion
+    )
+
+    export(EXPORT ${pkgName}Targets
+            FILE "${CMAKE_CURRENT_BINARY_DIR}/${pkgName}/${pkgName}Targets.cmake"
+            NAMESPACE ${pkgName}::
+            )
+
+    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/Config.cmake.in
+            "${CMAKE_CURRENT_BINARY_DIR}/${pkgName}/${pkgName}Config.cmake"
+            @ONLY
+            )
+
+    set(ConfigPackageLocation lib/cmake/${pkgName})
+    install(EXPORT ${pkgName}Targets
+            FILE
+            ${pkgName}Targets.cmake
+            NAMESPACE
+            ${pkgName}::
+            DESTINATION
+            ${ConfigPackageLocation}
+            )
+    install(
+            FILES
+            "${CMAKE_CURRENT_BINARY_DIR}/${pkgName}/${pkgName}Config.cmake"
+            "${CMAKE_CURRENT_BINARY_DIR}/${pkgName}/${pkgName}ConfigVersion.cmake"
+            DESTINATION
+            ${ConfigPackageLocation}
+    )
+endif()
+
+# make installation packages
+include(Packing.cmake OPTIONAL)
 
 # Setting file variables to null
 set(SRCS "")
@@ -72,16 +175,15 @@ set(HDRS "")
 #    unit-tests/manual-PetAPI.c
 #    unit-tests/manual-StoreAPI.c
 #    unit-tests/manual-UserAPI.c
-#    unit-tests/manual-order.c
-#    unit-tests/manual-user.c)
+#)
 
 ##set header files
 #set(HDRS
 #)
 
 ## loop over all files in SRCS variable
 #foreach(SOURCE_FILE ${SRCS})
-#    # Get only the file name from the file as add_executable doesn't support executable with slash("/")
+#    # Get only the file name from the file as add_executable does not support executable with slash("/")
 #    get_filename_component(FILE_NAME_ONLY ${SOURCE_FILE} NAME_WE)
 #    # Remove .c from the file name and set it as executable name
 #    string( REPLACE ".c" "" EXECUTABLE_FILE ${FILE_NAME_ONLY})