--- CMakeLists.txt.orig	2020-07-22 22:36:50 UTC
+++ CMakeLists.txt
@@ -42,7 +42,7 @@ ExternalProject_Add(htslib
     BUILD_IN_SOURCE 1
     CONFIGURE_COMMAND autoheader && autoconf && ${PROJECT_SOURCE_DIR}/ext/htslib/configure 
         --prefix=${PREFIX} --disable-bz2 --disable-lzma --disable-libcurl
-    BUILD_COMMAND make lib-static
+    BUILD_COMMAND gmake lib-static
     INSTALL_COMMAND ""
 )