From f7eb0af9b6fec3d421b45040feb5abb559ddd595 Mon Sep 17 00:00:00 2001
From: Alex Kleb <akleb@umich.edu>
Date: Mon, 18 Apr 2022 15:03:13 -0400
Subject: [PATCH] Working git-hash on adflow

---
 .gitignore               |  1 +
 adflow/__init__.py       |  1 +
 adflow/fortranVersion.py | 15 +++++++++++++++
 src/build/Makefile       | 26 +++++++++++++++++++++++++-
 src/build/directoryList  |  1 +
 src/build/fileList       |  2 ++
 src/f2py/adflow.pyf      |  3 +++
 7 files changed, 48 insertions(+), 1 deletion(-)
 create mode 100644 adflow/fortranVersion.py

diff --git a/.gitignore b/.gitignore
index 03c447853..1617af44d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,6 +23,7 @@ src/build/adflow_project.dep
 src/build/libadflow-f2pywrappers2.f90
 src/build/libadflowmodule.c
 src/build/importTest.py
+src/build/version.f90
 
 # Regression test auxiliary files:
 input_files.tar.gz
diff --git a/adflow/__init__.py b/adflow/__init__.py
index 1320315f0..e74e48a57 100644
--- a/adflow/__init__.py
+++ b/adflow/__init__.py
@@ -6,3 +6,4 @@
 from .pyADflow_C import ADFLOW_C
 from .oversetCheck import OversetCheck
 from .checkZipper import checkZipper
+from .fortranVersion import fortranVersion
diff --git a/adflow/fortranVersion.py b/adflow/fortranVersion.py
new file mode 100644
index 000000000..2c79da1d4
--- /dev/null
+++ b/adflow/fortranVersion.py
@@ -0,0 +1,15 @@
+from .libadflow import version
+
+
+def fortranVersion():
+    """
+    Return the version of the compiled Fortran code
+
+    Returns
+    -------
+    ver : str
+            the value of `git describe --dirty --always --tags` at compile time of the libadflow object.
+    """
+
+    ver = version()
+    return ver.decode("utf-8").strip()
diff --git a/src/build/Makefile b/src/build/Makefile
index 7ddfcbe20..044437a5c 100644
--- a/src/build/Makefile
+++ b/src/build/Makefile
@@ -10,6 +10,8 @@ CC_ALL_FLAGS     = $(C_FLAGS) -I../c_defines  -I../metis-4.0  $(PETSC_CC_INCLUDE
 
 LINKER_ALL_FLAGS = $(CGNS_LINKER_FLAGS) $(PETSC_LIB) $(LINKER_FLAGS)
 
+GIT_VERSION = $(shell git describe --dirty --always --tags)
+
 # Include the full filelist
 include fileList
 
@@ -46,10 +48,32 @@ OFILES=$(f90Files:%.f90=%.o) $(F90Files:%.F90=%.o) $(cFilesNoDir:%.c=%.o) $(f77F
 DEP_FILE=adflow_project.dep
 
 # Not real targets are "phony"
-.PHONY: sources lib
+.PHONY: version sources lib
 
 default: all
 
+version: ../build/version.f90
+
+../build/version.f90:
+	@echo "Making auto-generated version file"
+	@echo GIT_VERSION is $(GIT_VERSION)
+#	@echo "module fortranversion" > version.f90
+#	@echo "  use constants, only : maxStringLen" >> version.f90
+#	@echo "contains" >> version.f90
+	@echo "  subroutine version(ver)" > version.f90
+	@echo "    ! Automatically generated version function" >> version.f90
+	@echo "    !" >> version.f90
+	@echo "    ! Desricption of Arguments" >> version.f90
+	@echo "    ! Output" >> version.f90
+	@echo "    ! ver    - string, contains git tag and commit hash" >> version.f90
+	@echo "    use precision" >> version.f90
+	@echo "    implicit none" >> version.f90
+	@echo "    character(len=256), intent(out) :: ver" >> version.f90
+	@echo "    " >> version.f90
+	@echo "    ver = '$(GIT_VERSION)'" >> version.f90
+	@echo "  end subroutine version" >> version.f90
+#	@echo "end module fortranVersion" >> version.f90
+
 # The 'source's makes all the .o files. It also depends on the dependence file "DEP_FILE".
 sources: $(OFILES) $(DEP_FILE)
 
diff --git a/src/build/directoryList b/src/build/directoryList
index cd87942bb..43672aa75 100644
--- a/src/build/directoryList
+++ b/src/build/directoryList
@@ -5,6 +5,7 @@ dirs:=	adjoint\
 	adjoint/ADFirstAidKit\
 	ADT\
 	bcdata\
+	build\
 	initFlow\
 	inputParam\
 	NKSolver\
diff --git a/src/build/fileList b/src/build/fileList
index b1cf99855..59fb85467 100644
--- a/src/build/fileList
+++ b/src/build/fileList
@@ -13,6 +13,8 @@ fortranFiles=	ADT/adtUtils.F90\
 		\
 		bcdata/BCData.F90\
 		\
+		build/version.f90\
+		\
 		initFlow/variableReading.F90\
 		initFlow/initializeFlow.F90\
 		\
diff --git a/src/f2py/adflow.pyf b/src/f2py/adflow.pyf
index a8dbea684..99ac28263 100644
--- a/src/f2py/adflow.pyf
+++ b/src/f2py/adflow.pyf
@@ -1444,6 +1444,9 @@ python module libadflow
           end subroutine getfam
         end module surfacefamilies
 
+        subroutine version(ver) ! in :test:version.f90
+          character(len=256) intent(out) :: ver
+        end subroutine version
 
     end interface