From: Richard Levitte <richard@levitte.org>
Date: Wed, 12 May 2021 12:09:49 +0000 (+0200)
Subject: Set OPENSSL_ROOT_DIR if it isn't set.
X-Git-Tag: v3.0.0~19
X-Git-Url: http://www.wagner.pp.ru/gitweb/?p=openssl-gost%2Fengine.git;a=commitdiff_plain;h=6d232f8fc1f754c53164f610882fc7b62812f598

Set OPENSSL_ROOT_DIR if it isn't set.

These days, the OpenSSL cmake package finder is capable of finding
a custom OpenSSL installation with no OPENSSL_ROOT_DIR defined, but
CMAKE_PREFIX_PATH defined.

However, gost-engine's CMakeLists.txt does use OPENSSL_ROOT_DIR, so
it needs it to be defined unconditionally.  That's arranged fairly
easily by assigning it the parent directory of OPENSSL_INCLUDE_DIR.
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a6bb178..d705b3b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,9 +9,14 @@ include(CheckCSourceRuns)
 enable_testing()
 
 find_package(OpenSSL 3.0 REQUIRED)
+
+if (NOT DEFINED OPENSSL_ROOT_DIR)
+  get_filename_component(OPENSSL_ROOT_DIR ${OPENSSL_INCLUDE_DIR} DIRECTORY)
+  message(STATUS "Setting OpenSSL root: ${OPENSSL_ROOT_DIR}")
+endif()
 find_program(OPENSSL_PROGRAM openssl
   PATHS ${OPENSSL_ROOT_DIR} PATH_SUFFIXES apps bin NO_DEFAULT_PATH)
-message("-- Found OpenSSL application: ${OPENSSL_PROGRAM}")
+message(STATUS "Found OpenSSL application: ${OPENSSL_PROGRAM}")
 include_directories(${OPENSSL_INCLUDE_DIR})
 
 if (CMAKE_C_COMPILER_ID MATCHES "Clang")