diff --git a/core-mod/core/gcc/depends b/core-mod/core/gcc/depends
index ca8b7e5..d438cb0 100644
--- a/core-mod/core/gcc/depends
+++ b/core-mod/core/gcc/depends
@@ -2,3 +2,4 @@ binutils
 bison  make
 flex   make
 zlib
+libisl
diff --git a/core-mod/core/libisl/build b/core-mod/core/libisl/build
index c64060b..a86afce 100755
--- a/core-mod/core/libisl/build
+++ b/core-mod/core/libisl/build
@@ -1,8 +1,8 @@
 #!/bin/sh -e
 
-autoupdate
+#autoupdate
 
-./autogen.sh
+#./autogen.sh
 
 ./configure \
    --prefix=/usr
diff --git a/core-mod/core/libisl/checksums b/core-mod/core/libisl/checksums
index 3ac0801..8dce1be 100644
--- a/core-mod/core/libisl/checksums
+++ b/core-mod/core/libisl/checksums
@@ -1 +1 @@
-6812a560f3752dc2e0cc08bfc3c860044c57f4a2aeb8e387c0568246171d1794
+043105cc544f416b48736fff8caf077fb0663a717d06b1113f16e391ac99ebad
diff --git a/core-mod/core/libisl/sources b/core-mod/core/libisl/sources
index bd4451e..e26f75c 100644
--- a/core-mod/core/libisl/sources
+++ b/core-mod/core/libisl/sources
@@ -1 +1 @@
-https://repo.or.cz/isl.git/snapshot/73ab37ba8bb6a21b9672e29073ece533362e685d.tar.gz
+http://isl.gforge.inria.fr/isl-0.24.tar.xz