add SNAP library

- cmake/GetSNAP.cmake: add module that uses ExternalProject to download and
	build (with make) the SNAP library.
- CMakeLists.txt: simple cmake file to use the GetSNAP module.
- src/main.cc: simples possible main file.
- src/CMakeLists.txt: simple cmake file with main executable and linking.

Signed-off-by: Aiden Woodruff <woodra@rpi.edu>

1 files changed, 21 insertions, 0 deletions

diff --git a/cmake/GetSNAP.cmake b/cmake/GetSNAP.cmake
new file mode 100644
index 0000000..87b8c65
--- /dev/null
+++ b/cmake/GetSNAP.cmake
@@ -0,0 +1,21 @@
+include(ExternalProject)
+ExternalProject_Add(
+        SNAP
+        DOWNLOAD_DIR ${CMAKE_CURRENT_BINARY_DIR}
+        DOWNLOAD_NO_PROGRESS TRUE
+        URL https://snap.stanford.edu/releases/Snap-6.0.zip
+        URL_MD5 e32a1dbea584ba4f287c616627a71ac5
+        CONFIGURE_COMMAND ""
+        BUILD_IN_SOURCE TRUE
+        BUILD_COMMAND make
+        COMMAND make -C snap-core lib
+        INSTALL_COMMAND ""
+        LOG_BUILD TRUE
+)
+ExternalProject_Get_Property(SNAP SOURCE_DIR)
+set(SNAP_SOURCE_DIR "${SOURCE_DIR}")
+add_library(SNAP::SNAP STATIC IMPORTED)
+set_property(TARGET SNAP::SNAP
+        PROPERTY IMPORTED_LOCATION
+        ${SNAP_SOURCE_DIR}/snap-core/libsnap.a
+)