From 4892db5b0e54affb4a4eb635220c6669acb0d5ba Mon Sep 17 00:00:00 2001
From: Craig Andrews <candrews@integralblue.com>
Date: Mon, 29 Oct 2018 20:41:12 -0400
Subject: [PATCH] Discover OpenSSL engines directory

The directory can be overriden by setting the CMake variable OPENSSL_ENGINES_DIR
---
 .gitignore     |  1 -
 .travis.yml    |  2 +-
 CMakeLists.txt | 15 ++++++++++++---
 3 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/.gitignore b/.gitignore
index 3558c56..567609b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1 @@
-bin/
 build/
diff --git a/.travis.yml b/.travis.yml
index 8f023cf..ae592a0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,5 +31,5 @@ before_script:
   - cd ..
 
 script:
-  - cmake -DOPENSSL_ROOT_DIR=${PREFIX} -DOPENSSL_LIBRARIES=${PREFIX}/lib && make
+  - cmake -DOPENSSL_ROOT_DIR=${PREFIX} -DOPENSSL_LIBRARIES=${PREFIX}/lib -DOPENSSL_ENGINES_DIR=${PREFIX}/engines && make
   - make test
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 774a1a7..55b86c9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,6 +38,16 @@ set(OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/${BIN_DIRECTORY})
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${OUTPUT_DIRECTORY})
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${OUTPUT_DIRECTORY})
 
+# Remove when https://gitlab.kitware.com/cmake/cmake/issues/18525 is addressed
+set(OPENSSL_ENGINES_DIR "" CACHE PATH "OpenSSL Engines Directory")
+if ("${OPENSSL_ENGINES_DIR}" STREQUAL "")
+	include(FindPkgConfig)
+	pkg_get_variable(OPENSSL_ENGINES_DIR libcrypto enginesdir)
+	if ("${OPENSSL_ENGINES_DIR}" STREQUAL "")
+		message( FATAL_ERROR "Unable to discover the OpenSSL engines directory. Provide the path using -DOPENSSL_ENGINES_DIR" )
+	endif()
+endif()
+
 set(GOST_89_SOURCE_FILES
         gost89.c
         gost89.h
@@ -164,14 +174,13 @@ add_custom_target(tags
     WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
 
 # install
-set(OPENSSL_ENGINES_INSTALL_DIR ${CMAKE_INSTALL_LIBDIR}/engines-${OPENSSL_VERSION_MAJOR}_${OPENSSL_VERSION_MINOR})
 set(OPENSSL_MAN_INSTALL_DIR ${CMAKE_INSTALL_MANDIR}/man1)
 
 install(TARGETS gost_engine gostsum gost12sum EXPORT GostEngineConfig
-        LIBRARY  DESTINATION ${OPENSSL_ENGINES_INSTALL_DIR}
+        LIBRARY  DESTINATION ${OPENSSL_ENGINES_DIR}
         RUNTIME  DESTINATION ${CMAKE_INSTALL_BINDIR})
 install(FILES gostsum.1 gost12sum.1 DESTINATION ${OPENSSL_MAN_INSTALL_DIR})
 if (MSVC)
- install(FILES $<TARGET_PDB_FILE:gost_engine> DESTINATION ${OPENSSL_ENGINES_INSTALL_DIR} OPTIONAL)
+ install(FILES $<TARGET_PDB_FILE:gost_engine> DESTINATION ${OPENSSL_ENGINES_DIR} OPTIONAL)
  install(FILES $<TARGET_PDB_FILE:gostsum> $<TARGET_PDB_FILE:gost12sum> DESTINATION ${CMAKE_INSTALL_BINDIR} OPTIONAL)
 endif()
-- 
2.39.2