diff --git a/src/Linux/README.MD b/src/Linux/README.MD
index 4affbc35..2a870da9 100644
--- a/src/Linux/README.MD
+++ b/src/Linux/README.MD
@@ -73,6 +73,18 @@ build-essential package (`sudo apt install build-essential`) and dh-virtualenv
 
 The output deb file is suitable for installation on any amd64 Ubuntu system.
 
+In Ubuntu 20.04, please run this command to install dh-virtualenv:
+```
+sudo apt-get install software-properties-common
+sudo apt-add-repository universe
+sudo apt-get update
+sudo apt-get install virtualenv
+```
+Install fakeroot:
+```
+sudo apt install build-essential devscripts debhelper check libsubunit-dev fakeroot
+```
+
 ## Troubleshooting
 
 1. You're seeing cryptic errors such as ": No such file or directory":
diff --git a/src/Linux/debian/changelog b/src/Linux/debian/changelog
index e44d84bb..20406c62 100644
--- a/src/Linux/debian/changelog
+++ b/src/Linux/debian/changelog
@@ -1,3 +1,8 @@
+az-dcap-client (1.8) stable; urgency=medium
+  * Enable Ubuntu 20.04 package and Fixed compile errors
+
+ -- Wei Wang <wewang3@microsoft.com>  Fri, 19 Mar 2021 2:42:00 -0700
+
 az-dcap-client (1.7) stable; urgency=medium
   * Enable v3 for icx and coffelake. Use the Cache-Control header to determine how long collateral should be cached for. Cleanup of error handling logs in Windows
 
diff --git a/src/Windows/GeneratePackage/Azure.DCAP.Windows.nuspec b/src/Windows/GeneratePackage/Azure.DCAP.Windows.nuspec
index 324e3ef3..82269c57 100644
--- a/src/Windows/GeneratePackage/Azure.DCAP.Windows.nuspec
+++ b/src/Windows/GeneratePackage/Azure.DCAP.Windows.nuspec
@@ -2,12 +2,12 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
     <metadata>
         <id>Microsoft.Azure.DCAP</id>
-        <version>1.7.0</version>
+        <version>1.8.0</version>
         <!-- Authors contain text that appears directly on the gallery -->
         <authors>Microsoft</authors>
         <owners>Microsoft</owners>
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
-        <releaseNotes>Enable v3 for icx and coffelake and Use the Cache-Control header to determine how long collateral should be cached for. Cleanup of error handling logs in Windows</releaseNotes>
+        <releaseNotes>Enable Ubuntu20.04 package and Fixed compile errors</releaseNotes>
         <description>
             This library serves as a quoting data provider plugin for the Intel SGX Data Center Attestation Primitives (DCAP). Specifically, the Intel DCAP library will search out and load provider plugins, such as the Azure DCAP Client.
             This provider plugin is then used to fetch certain data files, such as platform certificates, TCB structures, and revocation lists.
diff --git a/src/dcap_provider.cpp b/src/dcap_provider.cpp
index 57aa38a8..709c00b3 100644
--- a/src/dcap_provider.cpp
+++ b/src/dcap_provider.cpp
@@ -234,7 +234,7 @@ bool get_cache_expiration_time(const string &cache_control, const string &url, t
                 return false;
             }
         }
-        catch (std::invalid_argument e)
+        catch (const std::invalid_argument& e)
         {
             log(SGX_QL_LOG_ERROR,
                 "Invalid argument thrown when parsing cache-control. Header text: '%s' Error: '%s'. Collateral will not be cached",
@@ -242,7 +242,7 @@ bool get_cache_expiration_time(const string &cache_control, const string &url, t
                 e.what());
             return false;
         }
-        catch (std::out_of_range e)
+        catch (const std::out_of_range& e)
         {
             log(SGX_QL_LOG_ERROR,
                 "Invalid argument thrown when parsing cache-control. Header "
@@ -450,7 +450,7 @@ static size_t safe_multiply(size_t first, size_t second)
 template <typename input_t, typename output_t>
 void safe_cast(input_t in, output_t* out)
 {
-    if (in > (std::numeric_limits<output_t>::max)())
+    if (in > static_cast<input_t>((std::numeric_limits<output_t>::max)()))
     {
         throw std::overflow_error("Integer cast overflow");
     }
@@ -764,7 +764,7 @@ static std::unique_ptr<std::vector<uint8_t>> try_cache_get(
     {
         return local_cache_get(cert_url);
     }
-    catch (std::runtime_error& error)
+    catch (const std::runtime_error& error)
     {
         log(SGX_QL_LOG_WARNING, "Unable to access cache: %s", error.what());
         return nullptr;
@@ -835,7 +835,7 @@ static quote3_error_t get_collateral(
 
         return retval;
     }
-    catch (std::runtime_error& error)
+    catch (const std::runtime_error& error)
     {
         log(SGX_QL_LOG_WARNING,
             "Runtime exception thrown, error: %s",
@@ -844,7 +844,7 @@ static quote3_error_t get_collateral(
         // operate without caching
         return retval;
     }
-    catch (curl_easy::error& error)
+    catch (const curl_easy::error& error)
     {
         log(SGX_QL_LOG_ERROR,
             "curl error thrown, error code: %x: %s",
@@ -988,12 +988,12 @@ extern "C" quote3_error_t sgx_ql_get_quote_config(
             }
         }
     }
-    catch (std::bad_alloc&)
+    catch (const std::bad_alloc&)
     {
         log_message(SGX_QL_LOG_ERROR, "Out of memory thrown");
         return SGX_QL_ERROR_OUT_OF_MEMORY;
     }
-    catch (curl_easy::error& error)
+    catch (const curl_easy::error& error)
     {
         log(SGX_QL_LOG_ERROR,
             "error thrown, error code: %x: %s",
@@ -1003,7 +1003,7 @@ extern "C" quote3_error_t sgx_ql_get_quote_config(
                    ? SGX_QL_NO_PLATFORM_CERT_DATA
                    : SGX_QL_ERROR_UNEXPECTED;
     }
-    catch (std::runtime_error& error)
+    catch (const std::runtime_error& error)
     {
         log(SGX_QL_LOG_WARNING,
             "Runtime exception thrown, error: %s",
@@ -1012,7 +1012,7 @@ extern "C" quote3_error_t sgx_ql_get_quote_config(
         // operate without caching
         // return SGX_QL_ERROR_UNEXPECTED;
     }
-    catch (std::exception& error)
+    catch (const std::exception& error)
     {
         log(SGX_QL_LOG_ERROR,
             "Unknown exception thrown, error: %s",
@@ -1219,18 +1219,18 @@ extern "C" sgx_plat_error_t sgx_ql_get_revocation_info(
 
         assert(buffer == buffer_end);
     }
-    catch (std::bad_alloc&)
+    catch (const std::bad_alloc&)
     {
         return SGX_PLAT_ERROR_OUT_OF_MEMORY;
     }
-    catch (std::overflow_error& error)
+    catch (const std::overflow_error& error)
     {
         log(SGX_QL_LOG_ERROR, "Overflow error. '%s'", error.what());
         delete[] buffer;
         *pp_revocation_info = nullptr;
         return SGX_PLAT_ERROR_OVERFLOW;
     }
-    catch (curl_easy::error& error)
+    catch (const curl_easy::error& error)
     {
         log(SGX_QL_LOG_ERROR,
             "error thrown, error code: %x: %s",
@@ -1240,7 +1240,7 @@ extern "C" sgx_plat_error_t sgx_ql_get_revocation_info(
                    ? SGX_PLAT_NO_DATA_FOUND
                    : SGX_PLAT_ERROR_UNEXPECTED_SERVER_RESPONSE;
     }
-    catch (std::exception& error)
+    catch (const std::exception& error)
     {
         log(SGX_QL_LOG_ERROR,
             "Unknown exception thrown, error: %s",
@@ -1331,17 +1331,17 @@ extern "C" sgx_plat_error_t sgx_get_qe_identity_info(
             issuer_chain.size());
         *pp_qe_identity_info = p_qe_identity_info;
     }
-    catch (std::bad_alloc&)
+    catch (const std::bad_alloc&)
     {
         return SGX_PLAT_ERROR_OUT_OF_MEMORY;
     }
-    catch (std::overflow_error& error)
+    catch (const std::overflow_error& error)
     {
         log(SGX_QL_LOG_ERROR, "Overflow error. '%s'", error.what());
         *pp_qe_identity_info = nullptr;
         return SGX_PLAT_ERROR_OVERFLOW;
     }
-    catch (curl_easy::error& error)
+    catch (const curl_easy::error& error)
     {
         log(SGX_QL_LOG_ERROR,
             "error thrown, error code: %x: %s",
@@ -1351,7 +1351,7 @@ extern "C" sgx_plat_error_t sgx_get_qe_identity_info(
                    ? SGX_PLAT_NO_DATA_FOUND
                    : SGX_PLAT_ERROR_UNEXPECTED_SERVER_RESPONSE;
     }
-    catch (std::exception& error)
+    catch (const std::exception& error)
     {
         log(SGX_QL_LOG_ERROR,
             "Unknown exception thrown, error: %s",
@@ -1622,19 +1622,19 @@ extern "C" quote3_error_t sgx_ql_get_quote_verification_collateral(
 
         return result;
     }
-    catch (std::bad_alloc&)
+    catch (const std::bad_alloc&)
     {
         sgx_ql_free_quote_verification_collateral(p_quote_collateral);
         log(SGX_QL_LOG_ERROR, "Out of memory thrown");
         return SGX_QL_ERROR_OUT_OF_MEMORY;
     }
-    catch (std::overflow_error& error)
+    catch (const std::overflow_error& error)
     {
         log(SGX_QL_LOG_ERROR, "Overflow error. '%s'", error.what());
         sgx_ql_free_quote_verification_collateral(p_quote_collateral);
         return SGX_QL_ERROR_UNEXPECTED;
     }
-    catch (std::exception& error)
+    catch (const std::exception& error)
     {
         log(SGX_QL_LOG_ERROR,
             "Unknown exception thrown, error: %s",
@@ -1714,21 +1714,21 @@ extern "C" quote3_error_t sgx_ql_get_qve_identity(
 
         return operation_result;
     }
-    catch (std::bad_alloc&)
+    catch (const std::bad_alloc&)
     {
         sgx_ql_free_qve_identity(
             *pp_qve_identity, *pp_qve_identity_issuer_chain);
         log(SGX_QL_LOG_ERROR, "Out of memory thrown");
         return SGX_QL_ERROR_OUT_OF_MEMORY;
     }
-    catch (std::overflow_error& error)
+    catch (const std::overflow_error& error)
     {
         log(SGX_QL_LOG_ERROR, "Overflow error. '%s'", error.what());
         sgx_ql_free_qve_identity(
             *pp_qve_identity, *pp_qve_identity_issuer_chain);
         return SGX_QL_ERROR_UNEXPECTED;
     }
-    catch (std::exception& error)
+    catch (const std::exception& error)
     {
         log(SGX_QL_LOG_ERROR,
             "Unknown exception thrown, error: %s",
@@ -1784,23 +1784,23 @@ extern "C" quote3_error_t sgx_ql_get_root_ca_crl(
         *p_root_ca_crl_size = (uint16_t)bufferSize;
         return retval;
     }
-    catch (std::bad_alloc&)
+    catch (const std::bad_alloc&)
     {
         sgx_ql_free_root_ca_crl(*pp_root_ca_crl);
         log(SGX_QL_LOG_ERROR, "Out of memory thrown");
         return SGX_QL_ERROR_OUT_OF_MEMORY;
     }
-    catch (std::overflow_error& error)
+    catch (const std::overflow_error& error)
     {
         log(SGX_QL_LOG_ERROR, "Overflow error. '%s'", error.what());
         sgx_ql_free_root_ca_crl(*pp_root_ca_crl);
         return SGX_QL_ERROR_UNEXPECTED;
     }
-    catch (std::exception& error)
+    catch (const std::exception& error)
     {
         log(SGX_QL_LOG_ERROR,
             "Unknown exception thrown, error: %s",
             error.what());
         return SGX_QL_ERROR_UNEXPECTED;
     }
-}
\ No newline at end of file
+}