From 4c56df46de18da692785ed337910ab852c34e0ce Mon Sep 17 00:00:00 2001
From: kinichiro <kinichiro.inoguchi@gmail.com>
Date: Sun, 2 May 2021 15:50:37 +0900
Subject: Statically link libcrypto/ssl into libtls with cmake

---
 CMakeLists.txt         |  3 ++-
 apps/nc/CMakeLists.txt |  2 +-
 crypto/CMakeLists.txt  |  2 ++
 tests/CMakeLists.txt   |  8 ++++----
 tls/CMakeLists.txt     | 16 +++++++++++++---
 5 files changed, 22 insertions(+), 9 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4183499..838b7e8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -331,7 +331,8 @@ if(SIZEOF_TIME_T STREQUAL "4")
 endif()
 add_definitions(-DSIZEOF_TIME_T=${SIZEOF_TIME_T})
 
-set(OPENSSL_LIBS tls ssl crypto ${PLATFORM_LIBS})
+set(OPENSSL_LIBS ssl crypto ${PLATFORM_LIBS})
+set(LIBTLS_LIBS tls ${PLATFORM_LIBS})
 
 add_subdirectory(crypto)
 add_subdirectory(ssl)
diff --git a/apps/nc/CMakeLists.txt b/apps/nc/CMakeLists.txt
index cc34ef3..f21c869 100644
--- a/apps/nc/CMakeLists.txt
+++ b/apps/nc/CMakeLists.txt
@@ -44,7 +44,7 @@ endif()
 
 add_executable(nc ${NC_SRC})
 target_include_directories(nc PRIVATE . ./compat ../../include/compat)
-target_link_libraries(nc tls ${OPENSSL_LIBS})
+target_link_libraries(nc ${LIBTLS_LIBS})
 
 if(ENABLE_NC)
 	if(ENABLE_LIBRESSL_INSTALL)
diff --git a/crypto/CMakeLists.txt b/crypto/CMakeLists.txt
index 46db626..b1ded85 100644
--- a/crypto/CMakeLists.txt
+++ b/crypto/CMakeLists.txt
@@ -968,6 +968,8 @@ if(EXTRA_EXPORT)
 	endforeach()
 endif()
 
+set(LIBTLS_EXTRA_EXPORT ${EXTRA_EXPORT} PARENT_SCOPE)
+
 add_library(crypto_obj OBJECT ${CRYPTO_SRC})
 target_include_directories(crypto_obj
 	PRIVATE
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index d74cfbc..d0280f7 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -144,7 +144,7 @@ add_test(cmstest cmstest)
 
 # configtest
 add_executable(configtest configtest.c)
-target_link_libraries(configtest ${OPENSSL_LIBS})
+target_link_libraries(configtest ${LIBTLS_LIBS})
 add_test(configtest configtest)
 
 # constraints
@@ -276,7 +276,7 @@ if(NOT BUILD_SHARED_LIBS)
 	add_test(key_schedule key_schedule)
 
 	add_executable(keypairtest keypairtest.c)
-	target_link_libraries(keypairtest ${OPENSSL_LIBS})
+	target_link_libraries(keypairtest ${LIBTLS_LIBS})
 	add_test(keypairtest keypairtest
 		${CMAKE_CURRENT_SOURCE_DIR}/ca.pem
 		${CMAKE_CURRENT_SOURCE_DIR}/server.pem
@@ -502,7 +502,7 @@ else()
 endif()
 
 add_executable(tlstest ${TLSTEST_SRC})
-target_link_libraries(tlstest ${OPENSSL_LIBS})
+target_link_libraries(tlstest ${LIBTLS_LIBS})
 if(NOT MSVC)
 	add_test(NAME tlstest COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/tlstest.sh)
 else()
@@ -541,7 +541,7 @@ endif()
 # verifytest
 if(NOT BUILD_SHARED_LIBS)
 	add_executable(verifytest verifytest.c)
-	target_link_libraries(verifytest ${OPENSSL_LIBS})
+	target_link_libraries(verifytest ${LIBTLS_LIBS})
 	add_test(verifytest verifytest)
 endif()
 
diff --git a/tls/CMakeLists.txt b/tls/CMakeLists.txt
index 286d499..9aa10e1 100644
--- a/tls/CMakeLists.txt
+++ b/tls/CMakeLists.txt
@@ -29,6 +29,15 @@ else()
 	add_definitions(-DTLS_DEFAULT_CA_FILE=\"${CMAKE_INSTALL_PREFIX}/etc/ssl/cert.pem\")
 endif()
 
+file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/tls.sym DESTINATION
+	${CMAKE_CURRENT_BINARY_DIR})
+if(LIBTLS_EXTRA_EXPORT)
+	list(SORT LIBTLS_EXTRA_EXPORT)
+	foreach(SYM IN LISTS LIBTLS_EXTRA_EXPORT)
+		file(APPEND ${CMAKE_CURRENT_BINARY_DIR}/tls.sym "${SYM}\n")
+	endforeach()
+endif()
+
 add_library(tls_obj OBJECT ${TLS_SRC})
 target_include_directories(tls_obj
 	PRIVATE
@@ -37,7 +46,8 @@ target_include_directories(tls_obj
 	PUBLIC
 		../include)
 
-add_library(tls $<TARGET_OBJECTS:tls_obj>)
+add_library(tls $<TARGET_OBJECTS:tls_obj> $<TARGET_OBJECTS:ssl_obj>
+	$<TARGET_OBJECTS:crypto_obj>)
 target_include_directories(tls
 	PRIVATE
 		.
@@ -45,8 +55,8 @@ target_include_directories(tls
 	PUBLIC
 		../include)
 
-export_symbol(tls ${CMAKE_CURRENT_SOURCE_DIR}/tls.sym)
-target_link_libraries(tls ssl crypto ${PLATFORM_LIBS})
+export_symbol(tls ${CMAKE_CURRENT_BINARY_DIR}/tls.sym)
+target_link_libraries(tls ${PLATFORM_LIBS})
 if (WIN32)
 	set(TLS_POSTFIX -${TLS_MAJOR_VERSION})
 endif()
-- 
cgit v1.2.3-55-g6feb