diff --git a/.travis.yml b/.travis.yml
index c23d0674f..83a124812 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -41,6 +41,11 @@ branches:
 before_install:
   - export CXX=g++-4.8 CC=gcc-4.8
   - ci/make-tmp.sh
+  - export LIBRARY_PATH=$LIBRARY_PATH:$CI_PROJECT_DIR/tmp/lib
+  - export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$CI_PROJECT_DIR/tmp/lib
+  - export C_INCLUDE_PATH=$C_INCLUDE_PATH:$CI_PROJECT_DIR/tmp/include
+  - export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:$CI_PROJECT_DIR/tmp/include
+  - export VERILATOR_ROOT=$TRAVIS_BUILD_DIR/tmp/verilator-3.918/
 
 stages:
   - compile
@@ -55,7 +60,6 @@ jobs:
       script:
         - ci/install-verilator.sh
         - ci/install-fesvr.sh
-        - export VERILATOR_ROOT=$TRAVIS_BUILD_DIR/tmp/verilator-3.918/
         - ci/build-riscv-tests.sh
         - make run-asm-tests-verilator verilator=$TRAVIS_BUILD_DIR/tmp/bin/verilator
 
diff --git a/ci/build-riscv-tests.sh b/ci/build-riscv-tests.sh
index de65977c9..5b88a82ba 100755
--- a/ci/build-riscv-tests.sh
+++ b/ci/build-riscv-tests.sh
@@ -16,8 +16,12 @@ make install
 
 cd isa
 # generate hex files
-for f in $(ls | grep -v '\.[dump|hex]'); do
-    # elf2hex $f
-    echo "elf2hex $f > $f.hex"
-    elf2hex 8 16384 $f 2147483648 > $f.hex
-done
+if [ $(command -v elf2hex) > /dev/null ]; then
+    for f in $(ls | grep -v '\.[dump|hex]'); do
+        # elf2hex $f
+        echo "elf2hex $f > $f.hex"
+        elf2hex 8 16384 $f 2147483648 > $f.hex
+    done
+else
+    echo "Skipping hex file generation"
+fi