2 files changed, 2 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3f7c6a1..fd755ba 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -292,6 +292,7 @@ if(CMAKE_SYSTEM_NAME MATCHES "Linux")
         if (HAVE_CLOCK_GETTIME)
                 set(OPENSSL_LIBS ${OPENSSL_LIBS} rt)
         endif()
+        set(OPENSSL_LIBS ${OPENSSL_LIBS} pthread)
 endif()
 if(CMAKE_SYSTEM_NAME MATCHES "HP-UX")
         set(OPENSSL_LIBS ${OPENSSL_LIBS} pthread)
diff --git a/m4/check-os-options.m4 b/m4/check-os-options.m4
index 761a51d..3cf1956 100644
--- a/m4/check-os-options.m4
+++ b/m4/check-os-options.m4
@@ -80,6 +80,7 @@ char buf[1]; getentropy(buf, 1);
                 HOST_OS=linux
                 HOST_ABI=elf
                 CPPFLAGS="$CPPFLAGS -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_SOURCE -D_GNU_SOURCE"
+                AC_SUBST([PLATFORM_LDADD], ['-lpthread'])
                 ;;
         *netbsd*)
                 HOST_OS=netbsd