Index: build.sh
--- build.sh.orig	2020-10-16 15:11:44.000000000 +0200
+++ build.sh	2020-10-18 10:45:22.974444000 +0200
@@ -39,7 +39,7 @@
 done
 
 CC="${CC:-gcc}"
-COMP_FLAGS="${CPPFLAGS:-} ${CFLAGS:-}  -w -fmax-errors=3 -O3 -fno-strict-aliasing -fno-ident $extraBuildArgs"
+COMP_FLAGS="${CPPFLAGS:-} ${CFLAGS:-} -fno-strict-aliasing -fno-ident $extraBuildArgs"
 LINK_FLAGS="${LDFLAGS:-} "
 PS4=""
 # platform detection
@@ -84,7 +84,6 @@
     ;;
   *freebsd* )
     myos="freebsd"
-    CC="clang"
     LINK_FLAGS="$LINK_FLAGS -lm"
     ;;
   *openbsd* )
@@ -98,7 +97,6 @@
     ;;
   *darwin* )
     myos="macosx"
-    CC="clang"
     LINK_FLAGS="$LINK_FLAGS -ldl -lm"
     if [ "$HOSTTYPE" = "x86_64" ] ; then
       ucpu="amd64"
Index: install.sh
--- install.sh.orig	2020-10-16 15:11:44.000000000 +0200
+++ install.sh	2020-10-17 13:13:25.155710000 +0200
@@ -61,6 +61,9 @@
       mkdir -p $1/nim
       mkdir -p $bindir
       mkdir -p $configdir
+      mkdir -p $libdir
+      mkdir -p $docdir
+      mkdir -p $datadir
       ;;
   esac