Land #698, install pkgconfig files with ENABLE_LIBRESSL_INSTALL

CMakeLists.txt

@@ -352,7 +352,8 @@ if(LIBRESSL_APPS AND LIBRESSL_TESTS)
 	add_subdirectory(tests)
 endif()
 
-if(NOT MSVC)
+if(ENABLE_LIBRESSL_INSTALL)
+	if(NOT MSVC)
 		# Create pkgconfig files.
 		set(prefix      ${CMAKE_INSTALL_PREFIX})
 		set(exec_prefix \${prefix})
@@ -370,7 +371,8 @@ if(NOT MSVC)
 		endforeach()
 		install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/pkgconfig
 			DESTINATION ${CMAKE_INSTALL_LIBDIR})
-endif()
+	endif()
+endif(ENABLE_LIBRESSL_INSTALL)
 
 if(NOT "${OPENSSLDIR}" STREQUAL "")
 	set(CONF_DIR "${OPENSSLDIR}")