From d258299bcb440e570e0c1d05538e05e259cff0bf Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Mon, 31 Aug 2020 10:10:06 -0400
Subject: Add platform checks

---
 CMakeLists.txt | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 368e6ce..3de427f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,10 +1,32 @@
-cmake_minimum_required(VERSION 3.17)
+cmake_minimum_required(VERSION 3.0)
 project(multihome C)
+include(CheckSymbolExists)
+include(CheckCSourceCompiles)
 
 set(CMAKE_C_STANDARD 99)
 
 include_directories(.)
 
+check_symbol_exists(basename "libgen.h" HAVE_BASENAME)
+check_symbol_exists(dirname "libgen.h" HAVE_DIRNAME)
+check_symbol_exists(getpwuid "pwd.h" HAVE_GETPWUID)
+check_symbol_exists(geteuid "unistd.h" HAVE_GETEUID)
+
+check_c_source_compiles(
+    "
+    #include <argp.h>
+    int main(int argc, char *argv[]) {
+        struct argp_option option[10];
+    }
+    "
+    HAVE_ARGP
+)
+if (NOT HAVE_ARGP)
+    message(FATAL_ERROR "Your toolchain does not provide argp")
+endif()
+
+find_program(PROGRAM_RSYNC rsync REQUIRED)
+
 add_executable(multihome
         multihome.c
         multihome.h)
-- 
cgit