added some functions to verify and initialize ghdl project

scripts/build_env.py

@@ -0,0 +1,48 @@
+import os
+import subprocess
+
+def ghdlEnvExists(relativePath="work"):
+    ## Check if work exists
+    try:
+        os.lstat(relativePath)
+    except:
+        return False
+    ## Check that work is writable
+    if not os.access(relativePath, os.W_OK):
+        print(f"{relativePath} is write-protected, please acquire correct permissions")
+        return False
+    cfFileExists = False
+    filesInWork = os.listdir(relativePath)
+    for file in filesInWork:
+        if ".cf" in file:
+            cfFileExists = True
+    if not cfFileExists:
+        return False
+    ## Nothing bad, continue
+    return True
+
+def createBuildEnv():
+    if ghdlEnvExists():
+       return -1
+    ## Create build env
+    os.makedirs("work",exist_ok=True)
+    addAllVHDLFiles(init=False)
+    return 0
+
+def addAllVHDLFiles(init=False):
+    ## Ensure everything is ready for adding files 
+    ## (init exception to avoid one if-case in ghdlEnvExists)
+    if not ghdlEnvExists() and not init:
+       return -1
+    ## Add files
+    vhdlFiles = []
+    for file in os.listdir():
+        if ".vhd" in file:
+            vhdlFiles.append(file)
+    command = ["ghdl", "-i", "--workdir=work"] + vhdlFiles
+    subprocess.run(command)
+    return 0
+
+
+if __name__ == "__main__":
+    createBuildEnv()