gen_makefile: support erlang projects

Change-Id: Ib471a518c48dac8c0cd22bfb038b99b58014708f
---
M all.buildsystems
M all.deps
M gen_makefile.py
3 files changed, 43 insertions(+), 3 deletions(-)

diff --git a/all.buildsystems b/all.buildsystems
index fc1784b..7b5a573 100644
--- a/all.buildsystems
+++ b/all.buildsystems
@@ -1,3 +1,6 @@
 # Projects with buildsystems other than autotools
 # project	buildsystem
 open5gs		meson
+osmo-s1gw	erlang
+osmo-epdg	erlang
+osmo_dia2gsup	erlang
diff --git a/all.deps b/all.deps
index 398ebec..4ccb91e 100644
--- a/all.deps
+++ b/all.deps
@@ -37,6 +37,10 @@
 osmo-remsim	simtrace2_host libosmo-netif
 osmo-uecups	libosmocore
 
+osmo-s1gw
+osmo-epdg
+osmo_dia2gsup
+
 open5gs
 
 # can only clone these
diff --git a/gen_makefile.py b/gen_makefile.py
index 2fd04a7..0476a3f 100755
--- a/gen_makefile.py
+++ b/gen_makefile.py
@@ -239,7 +239,7 @@
   sync
   touch $@
     '''
-  elif buildsystem == "meson":
+  elif buildsystem in ["meson", "erlang"]:
     return ""
   else:
     assert False, f"unknown buildsystem: {buildsystem}"
@@ -274,11 +274,13 @@
   sync
   touch $@
     '''
+  elif buildsystem == "erlang":
+    return ""
   else:
     assert False, f"unknown buildsystem: {buildsystem}"
 
 def gen_makefile_build(proj, distclean_cond, build_proj, docker_cmd, jobs,
-                       check):
+                       check, src_proj):
   buildsystem = projects_buildsystems.get(proj, "autotools")
 
   if buildsystem == "autotools":
@@ -304,6 +306,17 @@
   sync
   touch $@
     '''
+  elif buildsystem == "erlang":
+    return f'''
+.make.{proj}.build: $({proj}_files)
+  @echo "\\n\\n\\n===== $@\\n"
+  set -x && \\
+    export REBAR_BASE_DIR="$$PWD/{build_proj}" && \\
+    mkdir -p "$$REBAR_BASE_DIR" && \\
+    $(MAKE) -C {src_proj} build {check}
+  sync
+  touch $@
+    '''
   else:
     assert False, f"unknown buildsystem: {buildsystem}"
 
@@ -328,6 +341,16 @@
   sync
   touch $@
     '''
+  elif buildsystem == "erlang":
+    return f'''
+.make.{proj}.install: .make.{proj}.build
+  @echo "\\n\\n\\n===== $@\\n"
+  for i in {build_proj}/default/bin/*; do \\
+    install -v -Dm755 "$$i" -t {shlex.quote(args.install_prefix)}/bin/; \\
+  done
+  sync
+  touch $@
+    '''
   else:
     assert False, f"unknown buildsystem: {buildsystem}"
 
@@ -400,6 +423,7 @@
       -or -name "*.cpp" \
       -or -name "*.tpl" \
       -or -name "*.map" \
+      -or -name "*.erl" \
     \) \
     -and -not -name "config.h" 2>/dev/null)
 
@@ -431,7 +455,7 @@
                                           build_proj, cflags, docker_cmd,
                                           build_to_src, configure_opts_str),
     build_rule=gen_makefile_build(proj, distclean_cond, build_proj, docker_cmd,
-                                  jobs, check),
+                                  jobs, check, src_proj),
     install_rule=gen_makefile_install(proj, docker_cmd, sudo_make_install,
                                       build_proj, no_ldconfig, sudo_ldconfig),
     reinstall_rule=gen_makefile_reinstall(proj, deps_reinstall,

