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testenv: deduplicate make_dir

Generate the osmo-dev make dir path in one location, in testenv.cmd
which gets imported by testenv.osmo_dev instead of doing it in both.
This makes it easier to bump make_dir_version when necessary.

Change-Id: Id3cb30e1ea126daf04dac227a2bf39b746549ec9
---
M _testenv/testenv/cmd.py
M _testenv/testenv/osmo_dev.py
2 files changed, 12 insertions(+), 14 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/78/40378/1

diff --git a/_testenv/testenv/cmd.py b/_testenv/testenv/cmd.py
index 9a81e30..5da27fe 100644
--- a/_testenv/testenv/cmd.py
+++ b/_testenv/testenv/cmd.py
@@ -9,6 +9,9 @@
 
 env_extra = {}
 install_dir = None
+make_dir = None
+# osmo-dev make dir version, bump when making incompatible changes
+make_dir_version = 2
 
 
 def init_env():
@@ -16,6 +19,7 @@
     changes here."""
     global env_extra
     global install_dir
+    global make_dir
 
     if testenv.args.podman:
         if testenv.args.binary_repo:
@@ -48,9 +52,11 @@
 
     if not testenv.args.binary_repo:
         if testenv.args.podman:
-            env_extra["OSMO_DEV_MAKE_DIR"] = os.path.join(testenv.args.cache, "podman", "make2")
+            make_dir = os.path.join(testenv.args.cache, "podman", "make")
         else:
-            env_extra["OSMO_DEV_MAKE_DIR"] = os.path.join(testenv.args.cache, "host", "make2")
+            make_dir = os.path.join(testenv.args.cache, "host", "make")
+        make_dir += str(make_dir_version)
+        env_extra["OSMO_DEV_MAKE_DIR"] = make_dir
 
     if testenv.args.kernel == "debian":
         env_extra["TESTENV_QEMU_KERNEL"] = "debian"
diff --git a/_testenv/testenv/osmo_dev.py b/_testenv/testenv/osmo_dev.py
index 02fe2e8..8b83367 100644
--- a/_testenv/testenv/osmo_dev.py
+++ b/_testenv/testenv/osmo_dev.py
@@ -7,7 +7,6 @@
 import testenv
 import testenv.cmd
 
-make_dir = None
 init_done = False
 
 
@@ -54,20 +53,17 @@
 
 def init():
     global init_done
-    global make_dir
 
     if init_done:
         return
 
     extra_opts = []
     if testenv.args.podman:
-        make_dir = os.path.join(testenv.args.cache, "podman", "make")
         extra_opts = [
             "--install-prefix",
             os.path.join(testenv.args.cache, "podman/usr"),
         ]
     else:
-        make_dir = os.path.join(testenv.args.cache, "host", "make")
         extra_opts = [
             "--install-prefix",
             os.path.join(testenv.args.cache, "host/usr"),
@@ -76,17 +72,13 @@
     if testenv.args.jobs:
         extra_opts += [f"-j{testenv.args.jobs}"]
 
-    # Make dirs created without passing --autoreconf-in-src-copy to
-    # gen_makefile.py (as previous versions of testenv did) are incompatible.
-    # Add the "2" to avoid potential conflicts.
-    make_dir += "2"
-
+    # Bump testenv.cmd.make_dir_version when making incompatible changes
     cmd = [
         "./gen_makefile.py",
         "--build-debug",
         "--no-make-check",
         "--make-dir",
-        make_dir,
+        testenv.cmd.make_dir,
         "--no-ldconfig",
         "--src-dir",
         testenv.src_dir,
@@ -135,7 +127,7 @@
         logging.debug("No osmo-dev make targets found in testenv.cfg")
         return
 
-    makefile_path = os.path.join(make_dir, "Makefile")
+    makefile_path = os.path.join(testenv.cmd.make_dir, "Makefile")
     with open(makefile_path) as f:
         makefile = f.read()
 
@@ -152,4 +144,4 @@
         sys.exit(1)
 
     logging.info("Building test components")
-    testenv.cmd.run(["make"] + targets, cwd=make_dir)
+    testenv.cmd.run(["make"] + targets, cwd=testenv.cmd.make_dir)

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