From 2c1f9e8d2c9d7b2ceb838d886ca78d951feb0a5d Mon Sep 17 00:00:00 2001
From: Tammo Jan Dijkema <T.J.Dijkema@gmail.com>
Date: Sat, 13 Apr 2019 11:03:32 +0200
Subject: [PATCH] Add CMake-pybind11 (without pybind11 for now)
---
pybind11-cmake/CMakeLists.txt | 11 +++++++
pybind11-cmake/Makefile | 35 +++++++++++++++++++++++
pybind11-cmake/apps/fib_cli.cpp | 12 ++++++++
pybind11-cmake/fib_cli | Bin 0 -> 16124 bytes
pybind11-cmake/include/fibonacci.h | 4 +++
pybind11-cmake/src/fibonacci.cpp | 14 +++++++++
pybind11-cmake/src/fibonacci_wrapper.cpp | 8 ++++++
7 files changed, 84 insertions(+)
create mode 100644 pybind11-cmake/CMakeLists.txt
create mode 100644 pybind11-cmake/Makefile
create mode 100644 pybind11-cmake/apps/fib_cli.cpp
create mode 100755 pybind11-cmake/fib_cli
create mode 100644 pybind11-cmake/include/fibonacci.h
create mode 100644 pybind11-cmake/src/fibonacci.cpp
create mode 100644 pybind11-cmake/src/fibonacci_wrapper.cpp
diff --git a/pybind11-cmake/CMakeLists.txt b/pybind11-cmake/CMakeLists.txt
new file mode 100644
index 0000000..191c5ea
--- /dev/null
+++ b/pybind11-cmake/CMakeLists.txt
@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.1)
+
+project(Fibonacci VERSION 0.1
+ DESCRIPTION "Calculate Fibonacci numbers using C++, with python binding"
+ LANGUAGES CXX)
+
+add_library(fibonacci SHARED src/fibonacci.cpp include/fibonacci.h)
+target_include_directories(fibonacci PUBLIC include)
+
+add_executable(fib_cli apps/fib_cli.cpp)
+target_link_libraries(fib_cli PUBLIC fibonacci)
diff --git a/pybind11-cmake/Makefile b/pybind11-cmake/Makefile
new file mode 100644
index 0000000..35bf03e
--- /dev/null
+++ b/pybind11-cmake/Makefile
@@ -0,0 +1,35 @@
+all: libfibonacci.so fibmod fib_cli
+
+fib_cli: apps/fib_cli.cpp libfibonacci.so
+ # compile fib_cli.cpp using the c++ compiler
+ # save to `fib_cli`
+ # link against the library `fibonacci`
+ # include the current directory in the directories searched for libraries
+ # include the current directory in the directories searched for headers
+ # compile the path where the library is to find into the binary
+ $(CXX) apps/fib_cli.cpp \
+ -o fib_cli \
+ -lfibonacci \
+ -L. \
+ -Iinclude \
+ -Wl,-rpath .
+
+libfibonacci.so: include/fibonacci.h src/fibonacci.cpp
+ # compile fibonacci.cpp into a shared library
+ # into libfibonacci.so
+ $(CXX) src/fibonacci.cpp \
+ -I include \
+ -o libfibonacci.so \
+ -Wl,-rpath . \
+ --shared
+
+fibmod: libfibonacci.so src/fibonacci_wrapper.cpp
+ # compile a python wrapper using pybind 11
+ $(CXX) -O3 -Wall -shared -std=c++11 -undefined dynamic_lookup \
+ -Iinclude -L. -lfibonacci \
+ `python3 -m pybind11 --includes` \
+ src/fibonacci_wrapper.cpp \
+ -o fibmod`python3-config --extension-suffix`
+
+clean:
+ rm -f fib_cli libfibonacci.so fibmod.cpython* fib_cli
diff --git a/pybind11-cmake/apps/fib_cli.cpp b/pybind11-cmake/apps/fib_cli.cpp
new file mode 100644
index 0000000..0cf58fa
--- /dev/null
+++ b/pybind11-cmake/apps/fib_cli.cpp
@@ -0,0 +1,12 @@
+#include <iostream>
+#include "fibonacci.h"
+
+
+int main() {
+
+ for (unsigned int i = 0; i < 10; i++) {
+ std::cout << i << ": " << fibonacci(i) << std::endl;
+ }
+
+ return 0;
+}
diff --git a/pybind11-cmake/fib_cli b/pybind11-cmake/fib_cli
new file mode 100755
index 0000000000000000000000000000000000000000..3db9e49b452e304224eacc2e1d356fb616b04d8d
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diff --git a/pybind11-cmake/include/fibonacci.h b/pybind11-cmake/include/fibonacci.h
new file mode 100644
index 0000000..57fd449
--- /dev/null
+++ b/pybind11-cmake/include/fibonacci.h
@@ -0,0 +1,4 @@
+#ifndef FIBONACCI_H
+#define FIBONACCI_H
+unsigned long fibonacci(unsigned int n);
+#endif
diff --git a/pybind11-cmake/src/fibonacci.cpp b/pybind11-cmake/src/fibonacci.cpp
new file mode 100644
index 0000000..5ef56ce
--- /dev/null
+++ b/pybind11-cmake/src/fibonacci.cpp
@@ -0,0 +1,14 @@
+#include "fibonacci.h"
+
+unsigned long fibonacci(unsigned int n) {
+ unsigned long n0 = 1;
+ unsigned long n1 = 1;
+ unsigned long tmp = 1;
+
+ for (unsigned int i = 0; i < n; i++) {
+ tmp = n1;
+ n1 = n0 + n1;
+ n0 = tmp;
+ }
+ return n0;
+}
diff --git a/pybind11-cmake/src/fibonacci_wrapper.cpp b/pybind11-cmake/src/fibonacci_wrapper.cpp
new file mode 100644
index 0000000..104883b
--- /dev/null
+++ b/pybind11-cmake/src/fibonacci_wrapper.cpp
@@ -0,0 +1,8 @@
+#include <pybind11/pybind11.h>
+#include "fibonacci.h"
+
+PYBIND11_MODULE(fibmod, m) {
+ m.doc() = "pybind11 example plugin for fibonacci";
+
+ m.def("fibonacci", &fibonacci, "Fibonacci function using C++");
+}
--
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