diff --git a/Cargo.toml b/Cargo.toml
index 5554596..a5fe4b1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cblas-src"
-version = "0.1.1"
+version = "0.1.2"
 authors = ["Andrey Tkachenko <andreytkachenko64@gmail.com>"]
 edition = "2018"
 build="build.rs"
diff --git a/build.rs b/build.rs
index 3493412..90f5f88 100644
--- a/build.rs
+++ b/build.rs
@@ -1,15 +1,14 @@
-use std::{env, fs, io};
-use std::path::{Path, PathBuf};
-use flate2::read::GzDecoder;
-use tar::Archive;
 use curl::easy::Easy;
+use flate2::read::GzDecoder;
 use std::io::Write;
-
+use std::path::{Path, PathBuf};
+use std::process::Command;
+use std::{env, fs, io};
+use tar::Archive;
 
 const CBLAS_SRC: &str = "http://www.netlib.org/blas/blast-forum/cblas.tgz";
 
-
-fn download<P: AsRef<Path>>(source_url: &str, target_file: P) -> anyhow::Result<()> {    
+fn download<P: AsRef<Path>>(source_url: &str, target_file: P) -> anyhow::Result<()> {
     let f = fs::File::create(&target_file)?;
     let mut writer = io::BufWriter::new(f);
     let mut easy = Easy::new();
@@ -36,7 +35,7 @@ fn extract<P1: AsRef<Path>, P2: AsRef<Path>>(filename: P1, outpath: P2) -> anyho
     let tar = GzDecoder::new(file);
     let mut archive = Archive::new(tar);
     archive.unpack(outpath.as_ref())?;
-    
+
     Ok(())
 }
 
@@ -49,13 +48,60 @@ fn main() {
         download(CBLAS_SRC, &cblas_name).unwrap();
         extract(cblas_name, &out_path).unwrap();
     }
-    
+
+
+    Command::new("gfortran")
+        .current_dir(cblas_dir.join("src"))
+        .arg("-O3")
+        .arg("-c").arg(cblas_dir.join("src/cdotcsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/cdotusub.f"))
+        .arg("-c").arg(cblas_dir.join("src/dasumsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/ddotsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/dnrm2sub.f"))
+        .arg("-c").arg(cblas_dir.join("src/dsdotsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/dzasumsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/dznrm2sub.f"))
+        .arg("-c").arg(cblas_dir.join("src/icamaxsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/idamaxsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/isamaxsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/izamaxsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/sasumsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/scasumsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/scnrm2sub.f"))
+        .arg("-c").arg(cblas_dir.join("src/sdotsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/sdsdotsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/snrm2sub.f"))
+        .arg("-c").arg(cblas_dir.join("src/zdotcsub.f"))
+        .arg("-c").arg(cblas_dir.join("src/zdotusub.f"))
+        .status()
+        .expect("fortran failed");
+
     cc::Build::new()
         .warnings(false)
         .extra_warnings(false)
         .static_flag(true)
         .define("ADD_", None)
         .include(cblas_dir.join("include"))
+        .object(cblas_dir.join("src/cdotcsub.o"))
+        .object(cblas_dir.join("src/cdotusub.o"))
+        .object(cblas_dir.join("src/dasumsub.o"))
+        .object(cblas_dir.join("src/ddotsub.o"))
+        .object(cblas_dir.join("src/dnrm2sub.o"))
+        .object(cblas_dir.join("src/dsdotsub.o"))
+        .object(cblas_dir.join("src/dzasumsub.o"))
+        .object(cblas_dir.join("src/dznrm2sub.o"))
+        .object(cblas_dir.join("src/icamaxsub.o"))
+        .object(cblas_dir.join("src/idamaxsub.o"))
+        .object(cblas_dir.join("src/isamaxsub.o"))
+        .object(cblas_dir.join("src/izamaxsub.o"))
+        .object(cblas_dir.join("src/sasumsub.o"))
+        .object(cblas_dir.join("src/scasumsub.o"))
+        .object(cblas_dir.join("src/scnrm2sub.o"))
+        .object(cblas_dir.join("src/sdotsub.o"))
+        .object(cblas_dir.join("src/sdsdotsub.o"))
+        .object(cblas_dir.join("src/snrm2sub.o"))
+        .object(cblas_dir.join("src/zdotcsub.o"))
+        .object(cblas_dir.join("src/zdotusub.o"))
         .file(cblas_dir.join("src/cblas_caxpy.c"))
         .file(cblas_dir.join("src/cblas_ccopy.c"))
         .file(cblas_dir.join("src/cblas_cdotc_sub.c"))
@@ -200,8 +246,6 @@ fn main() {
         .file(cblas_dir.join("src/cblas_ztrmv.c"))
         .file(cblas_dir.join("src/cblas_ztrsm.c"))
         .file(cblas_dir.join("src/cblas_ztrsv.c"))
-
-        // TODO build fortran files aswell 
-
+        // TODO build fortran files aswell
         .compile("libcblas");
-}
\ No newline at end of file
+}
diff --git a/src/lib.rs b/src/lib.rs
index 6768a93..99bf7c0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,4 @@
+
 #[cfg(test)]
 mod tests {
     extern crate openblas_src;
@@ -12,6 +13,7 @@ mod tests {
             2.0, 5.0,
             3.0, 6.0,
         ];
+        
         let b = vec![
             1.0, 5.0,  9.0,
             2.0, 6.0, 10.0,
@@ -24,11 +26,17 @@ mod tests {
             0.0, 7.0,
             4.0, 2.0,
         ];
+
+        let sdot_res = unsafe { 
+            ddot(6, &a, 1, &a, 1) 
+        };
         
         unsafe {
             dgemm(Layout::ColumnMajor, Transpose::None, Transpose::None,
                 m, n, k, 1.0, &a, m, &b, k, 1.0, &mut c, m);
         }
+
+        assert_eq!(sdot_res, 91.0);
         
         assert!(
             c == vec![