fix CI build.

2 files changed, 13 insertions, 3 deletions

diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index 5b8c191..9bc8efd 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -6,8 +6,11 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
-    
+
     steps:
     - uses: actions/checkout@v1
+    - name: Update g++
+      run: sudo apt -y install g++-8
     - name: Test
       run: make test
+
diff --git a/makefile b/makefile
index a285842..d176ee3 100644
--- a/makefile
+++ b/makefile
@@ -1,8 +1,7 @@
 #### PROJECT SETTINGS ####
 # The name of the executable to be created
 BIN_NAME := moonp
-# Compiler used
-CXX ?= g++
+
 # Extension of source files used in the project
 SRC_EXT = cpp
 # Path to the source directory, relative to the makefile
@@ -41,6 +40,14 @@ TEST_OUTPUT = ./spec/outputs
 # Obtains the OS type, either 'Darwin' (OS X) or 'Linux'
 UNAME_S:=$(shell uname -s)
 
+# Select compiler, add platform related linker flag
+ifeq ($(UNAME_S),Darwin)
+        CXX ?= clang
+else
+        LINK_FLAGS += -lstdc++fs
+        CXX ?= g++-8
+endif
+
 # Function used to check variables. Use on the command line:
 # make print-VARNAME
 # Useful for debugging and adding features