-(load-extension "libtest-extensions" "libtest_extensions_init")
-(load-extension "libtest-extensions" "libtest_extensions_init2")
+(load-extension (string-append (getenv "builddir") "/libtest-extensions")
+ "libtest_extensions_init")
+(load-extension (string-append (getenv "builddir") "/libtest-extensions")
+ "libtest_extensions_init2")