new package: libflann

packages/libflann/build.sh

@@ -0,0 +1,29 @@
+TERMUX_PKG_HOMEPAGE=https://github.com/flann-lib/flann
+TERMUX_PKG_DESCRIPTION="A library for performing fast approximate nearest neighbor searches in high dimensional spaces"
+TERMUX_PKG_LICENSE="BSD 3-Clause"
+TERMUX_PKG_MAINTAINER="@termux"
+_COMMIT=1d04523268c388dabf1c0865d69e1b638c8c7d9d
+TERMUX_PKG_VERSION=2019.04.06
+TERMUX_PKG_SRCURL=https://github.com/flann-lib/flann.git
+TERMUX_PKG_GIT_BRANCH=master
+TERMUX_PKG_DEPENDS="libc++, liblz4"
+TERMUX_PKG_BUILD_DEPENDS="libhdf5-static"
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
+-DBUILD_PYTHON_BINDINGS=OFF
+-DBUILD_MATLAB_BINDINGS=OFF
+-DBUILD_EXAMPLES=OFF
+-DBUILD_TESTS=OFF
+-DBUILD_DOC=OFF
+"
+
+termux_step_post_get_source() {
+	git fetch --unshallow
+	git checkout $_COMMIT
+
+	local version="$(git log -1 --format=%cs | sed 's/-/./g')"
+	if [ "$version" != "$TERMUX_PKG_VERSION" ]; then
+		echo -n "ERROR: The specified version \"$TERMUX_PKG_VERSION\""
+		echo " is different from what is expected to be: \"$version\""
+		return 1
+	fi
+}

packages/libflann/pkgconfig.patch

@@ -0,0 +1,42 @@
+https://github.com/flann-lib/flann/pull/480
+
+From 25eb56ec78472bd419a121c6905095a793cf8992 Mon Sep 17 00:00:00 2001
+From: Mike Purvis <mpurvis@clearpath.ai>
+Date: Fri, 9 Jul 2021 15:53:06 +0000
+Subject: [PATCH] Use string(JOIN) to avoid semicolons in pc file.
+
+---
+ CMakeLists.txt    | 3 ++-
+ cmake/flann.pc.in | 2 +-
+ 2 files changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index f4b94d25..aabf93ac 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,4 +1,4 @@
+-cmake_minimum_required(VERSION 2.6)
++cmake_minimum_required(VERSION 3.12)
+ 
+ if(COMMAND cmake_policy)
+     cmake_policy(SET CMP0003 NEW)
+@@ -148,6 +148,7 @@ endif(BUILD_CUDA_LIB)
+ 
+ find_package(PkgConfig REQUIRED)
+ pkg_check_modules(LZ4 REQUIRED liblz4)
++string(JOIN " " LZ4_STATIC_LDFLAGS_STR ${LZ4_STATIC_LDFLAGS})
+ 
+ #set the C/C++ include path to the "include" directory
+ include_directories(BEFORE ${PROJECT_SOURCE_DIR}/src/cpp)
+diff --git a/cmake/flann.pc.in b/cmake/flann.pc.in
+index 07b8d649..1e7673ac 100644
+--- a/cmake/flann.pc.in
++++ b/cmake/flann.pc.in
+@@ -8,6 +8,6 @@ Name: @PROJECT_NAME@
+ Description: @PKG_DESC@
+ Version: @FLANN_VERSION@
+ Requires: @PKG_EXTERNAL_DEPS@
+-Libs: -L${libdir} @LZ4_STATIC_LDFLAGS@ -lflann -lflann_cpp
++Libs: -L${libdir} @LZ4_STATIC_LDFLAGS_STR@ -lflann -lflann_cpp
+ Cflags: -I${includedir}
+