Add compiler compatibility tests to Travis CI

.travis.yml

@@ -15,7 +15,7 @@ cache:
 
 # Supported Operating systems
 dist: bionic
-compiler: g++-8
+#compiler: g++-8
 addons:
   apt:
     sources:
@@ -33,8 +33,6 @@ addons:
     - doxygen
     - flex
     - fontconfig
-    - g++-8
-    - gcc-8
     - gdb
     - git
     - gperf
@@ -56,6 +54,19 @@ addons:
     - zip
     - qt5-default
     - clang-format-7
+# Add all the supported compilers
+    - g++-5
+    - gcc-5
+    - g++-6
+    - gcc-6
+    - g++-7
+    - gcc-7
+    - g++-8
+    - gcc-8
+    - g++-9
+    - gcc-9
+    - clang-6.0
+    - clang-8
 #- os: osx
 #  osx_image: xcode10.2 # we target latest MacOS Mojave
 #  sudo: true
@@ -76,6 +87,10 @@ addons:
 #      - libxml++
 #      - qt5
 
+# Use gcc-8 as default compiler
+env:
+  - MATRIX_EVAL="CC=gcc-8 && CXX=g++-8"
+
 before_script:
   - source .travis/common.sh
   - source .travis/install.sh
@@ -116,6 +131,55 @@ jobs:
         - source .travis/build.sh
         - source .travis/fpga_spice_reg_test.sh
 
+    - stage: Test
+      name: "Build Compatibility: GCC-5 (Ubuntu Bionic 18.04)"
+      env:
+        - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"
+      script:
+        - source .travis/build.sh
+
+    - stage: Test
+      name: "Build Compatibility: GCC-6 (Ubuntu Bionic 18.04)"
+      env:
+        - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6"
+      script:
+        - source .travis/build.sh
+
+    - stage: Test
+      name: "Build Compatibility: GCC-7 (Ubuntu Bionic 18.04)"
+      env:
+        - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7"
+      script:
+        - source .travis/build.sh
+
+    - stage: Test
+      name: "Build Compatibility: GCC-8 (Ubuntu Bionic 18.04)"
+      env:
+        - MATRIX_EVAL="CC=gcc-8 && CXX=g++-8"
+      script:
+        - source .travis/build.sh
+
+    - stage: Test
+      name: "Build Compatibility: GCC-9 (Ubuntu Bionic 18.04)"
+      env:
+        - MATRIX_EVAL="CC=gcc-9 && CXX=g++-9"
+      script:
+        - source .travis/build.sh
+
+    - stage: Test
+      name: "Build Compatibility: Clang-6 (Ubuntu Bionic 18.04)"
+      env:
+        - MATRIX_EVAL="CC=clang-6.0 && CXX=clang++-6.0"
+      script:
+        - source .travis/build.sh
+
+    - stage: Test
+      name: "Build Compatibility: Clang-8 (Ubuntu Bionic 18.04)"
+      env:
+        - MATRIX_EVAL="CC=clang-8 && CXX=clang++-8"
+      script:
+        - source .travis/build.sh
+
 #after_failure:
 #  - .travis/after_failure.sh
 

.travis/common.sh

@@ -39,8 +39,9 @@ if [[ $TRAVIS_OS_NAME == 'osx' ]]; then
   sudo installer -pkg /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg -target / -allowUntrusted
 else
   # For linux, we use g++-8 and gcc-8 as default compilers
-  export CC=gcc-8
-  export CXX=g++-8
+  eval "${MATRIX_EVAL}"
+  export "CC=$CC"
+  export "CXX=$CXX"
 fi
 
 

libopenfpga/libarchopenfpga/src/read_xml_circuit_library.cpp

@@ -459,7 +459,7 @@ void read_xml_output_mask(pugi::xml_node& xml_port,
     if (circuit_lib.port_size(port) != mask_vector.size()) {
       archfpga_throw(loc_data.filename_c_str(), loc_data.line(xml_port),
                      "Invalid lut_output_mask attribute '%s'! It must match the port size (=%lu)\n",
-                     output_mask_attr, circuit_lib.port_size(port));
+                     output_mask_attr.c_str(), circuit_lib.port_size(port));
     } 
   } else {
     /* By default, we give a mask vector covering each pin of the port */

libopenfpga/libopenfpgashell/src/command_parser.cpp

@@ -67,7 +67,7 @@ bool parse_command(const std::vector<std::string>& argv,
   /* Validate that the command name matches argv[0] */
   if (argv[0] != cmd.name()) { 
     VTR_LOG("Unexpected command name '%s'!\n",
-            argv[0]);
+            argv[0].c_str());
     return false;
   }
 

libopenfpga/libopenfpgautil/src/openfpga_decode.h

@@ -4,6 +4,7 @@
 /********************************************************************
  * Include header files that are required by function declaration
  *******************************************************************/
+#include <stddef.h>
 #include <vector>
 
 /********************************************************************

libopenfpga/libopenfpgautil/src/openfpga_scale.cpp

@@ -140,7 +140,7 @@ float string_to_unit(const std::string& scale) {
   /* Invalid unit report error */
   VTR_LOGF_ERROR(__FILE__, __LINE__,
                  "Invalid unit %s!\nAcceptable units are [a|f|p|n|u|k|M|B|T] or empty\n",
-                 scale); 
+                 scale.c_str()); 
   exit(1);
 }
 
@@ -153,13 +153,13 @@ float string_to_time_unit(const std::string& scale) {
     && (2 != scale.length()) ) {
     VTR_LOGF_ERROR(__FILE__, __LINE__,
                    "Time unit (='%s') must contain only one or two characters!\n",
-                   scale);
+                   scale.c_str());
   } 
   /* The last character must be 's' */
   if ('s' != scale.back()) {
     VTR_LOGF_ERROR(__FILE__, __LINE__,
                    "Time unit (='%s') must end with 's'!\n",
-                   scale);
+                   scale.c_str());
   }
 
   float unit = 1.;

openfpga/src/base/io_location_map.h

@@ -4,6 +4,7 @@
 /********************************************************************
  * Include header files required by the data structure definition
  *******************************************************************/
+#include <stddef.h>
 #include <vector>
 
 /* Begin namespace openfpga */