Split the internal OpenPGP parser to a separate repository

CMakeLists.txt

@@ -32,7 +32,6 @@ option(WITH_IMAEVM "Build with IMA support" OFF)
 option(WITH_FAPOLICYD "Build with fapolicyd support" ON)
 option(WITH_SEQUOIA "Build with Sequoia OpenPGP support" ON)
 option(WITH_OPENSSL "Use openssl instead of libgcrypt for internal crypto" OFF)
-option(WITH_INTERNAL_OPENPGP "Use internal OpenPGP parser (DEPRECATED)" OFF)
 option(WITH_READLINE "Build with readline support" ON)
 option(WITH_BZIP2 "Build with bzip2 support" ON)
 option(WITH_ICONV "Build with iconv support" ON)

INSTALL

@@ -44,11 +44,9 @@ you can build (and install) packages normally. In this mode, libgcrypt
 is used for crypthographic hash calculations by default, but alternatively
 OpenSSL can be selected by specifying -DWITH_OPENSSL=ON.
 
-Finally, the deprecated internal OpenPGP parser can be enabled with
--DWITH_SEQUOIA=OFF -DWITH_INTERNAL_OPENPGP=ON. It uses libgcrypt/OpenSSL,
-depending on the WITH_OPENSSL option.
-The internal parser is considered insecure and it's use is strongly
-discouraged.
+Finally, it's still possible to use rpm's own legacy OpenPGP parser,
+but it is considered insecure and it's use is strongly discouraged:
+    https://github.com/rpm-software-management/rpmpgp_legacy
 
 libgcrypt library is available from https://www.gnupg.org/software/libgcrypt/
 

rpmio/CMakeLists.txt

@@ -13,13 +13,16 @@ target_include_directories(librpmio PRIVATE
 	${Intl_INCLUDE_DIRS}
 )
 
+if (EXISTS ${CMAKE_SOURCE_DIR}/rpmio/rpmpgp_legacy/CMakeLists.txt)
+	add_subdirectory(rpmpgp_legacy)
+endif()
+
 if (WITH_SEQUOIA)
 	pkg_check_modules(RPMSEQUOIA REQUIRED IMPORTED_TARGET rpm-sequoia>=1.4.0)
 	target_sources(librpmio PRIVATE rpmpgp_sequoia.c)
 	target_link_libraries(librpmio PRIVATE PkgConfig::RPMSEQUOIA)
 else()
-	if (WITH_INTERNAL_OPENPGP)
-		add_subdirectory(rpmpgp_legacy)
+	if (WITH_LEGACY_OPENPGP)
 		target_link_libraries(librpmio PRIVATE rpmpgp_legacy)
 	else()
 		target_sources(librpmio PRIVATE rpmpgp_dummy.c)