Merge pull request wolfSSL#7546 from oltolm/cmake

cmake: fix generation of options.h

CMakeLists.txt

@@ -439,7 +439,7 @@ add_option(WOLFSSL_ALPN
     "no" "yes;no")
 
 if(WOLFSSL_ALPN)
-        list(APPEND WOLFSSL_DEFINITIONS "-DHAVE_ALPN" "-DHAVE_TLS_EXTENSIONS")
+    list(APPEND WOLFSSL_DEFINITIONS "-DHAVE_ALPN" "-DHAVE_TLS_EXTENSIONS")
 endif()
 
 # altcertchains
@@ -2238,32 +2238,6 @@ endif()
 
 file(REMOVE ${OPTION_FILE})
 
-file(APPEND ${OPTION_FILE} "/* wolfssl options.h\n")
-file(APPEND ${OPTION_FILE} " * generated from configure options\n")
-file(APPEND ${OPTION_FILE} " *\n")
-file(APPEND ${OPTION_FILE} " * Copyright (C) 2006-2023 wolfSSL Inc.\n")
-file(APPEND ${OPTION_FILE} " *\n")
-file(APPEND ${OPTION_FILE} " * This file is part of wolfSSL. (formerly known as CyaSSL)\n")
-file(APPEND ${OPTION_FILE} " *\n")
-file(APPEND ${OPTION_FILE} " */\n\n")
-file(APPEND ${OPTION_FILE} "#ifndef WOLFSSL_OPTIONS_H\n")
-file(APPEND ${OPTION_FILE} "#define WOLFSSL_OPTIONS_H\n\n\n")
-file(APPEND ${OPTION_FILE} "#ifdef __cplusplus\n")
-file(APPEND ${OPTION_FILE} "extern \"C\" {\n")
-file(APPEND ${OPTION_FILE} "#endif\n\n")
-
-add_to_options_file("${WOLFSSL_DEFINITIONS}" "${OPTION_FILE}")
-# CMAKE_C_FLAGS is just a string of space-separated flags to pass to the C
-# compiler. We need to replace those spaces with semicolons in order to treat it
-# as a CMake list.
-string(REPLACE " " ";" CMAKE_C_FLAGS_LIST "${CMAKE_C_FLAGS}")
-add_to_options_file("${CMAKE_C_FLAGS_LIST}" "${OPTION_FILE}")
-
-file(APPEND ${OPTION_FILE} "\n#ifdef __cplusplus\n")
-file(APPEND ${OPTION_FILE} "}\n")
-file(APPEND ${OPTION_FILE} "#endif\n\n\n")
-file(APPEND ${OPTION_FILE} "#endif /* WOLFSSL_OPTIONS_H */\n\n")
-
 ####################################################
 # Library Target
 ####################################################
@@ -2341,6 +2315,20 @@ if(WOLFSSL_ARIA)
     message(STATUS "ARIA Check: WOLFSSL_LINK_LIBS    = ${WOLFSSL_LINK_LIBS}")
 endif()
 
+foreach(DEF IN LISTS WOLFSSL_DEFINITIONS)
+    string(REGEX MATCH "^(-D)?([^=]+)(=(.*))?$" DEF_MATCH ${DEF})
+    if (DEFINED CMAKE_MATCH_4)
+        set(${CMAKE_MATCH_2} ${CMAKE_MATCH_4})
+        # message("set(${CMAKE_MATCH_2} ${CMAKE_MATCH_4})")
+    else()
+        set(${CMAKE_MATCH_2} 1)
+        # message("set(${CMAKE_MATCH_2} 1)")
+    endif()
+endforeach()
+
+# If new build options are added please update the cmake/options.h.in
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/options.h.in ${OPTION_FILE})
+
 set_target_properties(wolfssl
     PROPERTIES
         SOVERSION ${WOLFSSL_LIBRARY_VERSION_FIRST}

cmake/README.md

@@ -4,4 +4,4 @@ This directory contains some supplementary functions for the [CMakeLists.txt](..
 
 See also cmake notes in the [INSTALL](../INSTALL) documentation file.
 
-
+If new CMake build options are added `cmake/options.h.in` must also be updated.

cmake/functions.cmake

@@ -918,35 +918,6 @@ function(generate_lib_src_list LIB_SOURCES)
     set(LIB_SOURCES ${LIB_SOURCES} PARENT_SCOPE)
 endfunction()
 
-function(add_to_options_file DEFINITIONS OPTION_FILE)
-    list(REMOVE_DUPLICATES DEFINITIONS)
-    foreach(DEF IN LISTS DEFINITIONS)
-        if(DEF MATCHES "^-D")
-            if(DEF MATCHES "^-D(N)?DEBUG(=.+)?")
-                message("not outputting (N)DEBUG to ${OPTION_FILE}")
-            endif()
-
-            # allow user to ignore system options
-            if(DEF MATCHES "^-D_.*")
-                file(APPEND ${OPTION_FILE} "#ifndef WOLFSSL_OPTIONS_IGNORE_SYS\n")
-            endif()
-
-            string(REGEX REPLACE "^-D" "" DEF_NO_PREFIX ${DEF})
-            string(REGEX REPLACE "=.*$" "" DEF_NO_EQUAL_NO_VAL ${DEF_NO_PREFIX})
-            string(REPLACE "=" " " DEF_NO_EQUAL ${DEF_NO_PREFIX})
-
-            file(APPEND ${OPTION_FILE} "#undef  ${DEF_NO_EQUAL_NO_VAL}\n")
-            file(APPEND ${OPTION_FILE} "#define ${DEF_NO_EQUAL}\n")
-
-            if(DEF MATCHES "^-D_.*")
-                file(APPEND ${OPTION_FILE} "#endif\n")
-            endif()
-
-            file(APPEND ${OPTION_FILE} "\n")
-        endif()
-    endforeach()
-endfunction()
-
 # Function: set_wolfssl_definitions
 #   Parameter: SEARCH_VALUE  The string to search for. (e.g. "WOLFSSL_SHA3")
 #   Returns:   RESULT

cmake/include.am

@@ -2,5 +2,6 @@ EXTRA_DIST += cmake/README.md
 EXTRA_DIST += cmake/Config.cmake.in
 EXTRA_DIST += cmake/config.in
 EXTRA_DIST += cmake/functions.cmake
+EXTRA_DIST += cmake/options.h.in
 EXTRA_DIST += cmake/modules/FindARIA.cmake
 EXTRA_DIST += cmake/modules/FindOQS.cmake