From: Jakub Jirutka <jakub@jirutka.cz>
Date: Sat, 11 Dec 2021 23:20:00 +0100
Subject: [PATCH] Allow to override default_platform

`getauxval(AT_PLATFORM)` works as intended only on x86_64 and aarch64.
It returns v8lmain on armhf and armv7, power9main on ppc64le, i686main
on x86.

This is a low-effort patch, a better solution would be utsname.

--- a/src/main.cpp
+++ b/src/main.cpp
@@ -18,7 +21,9 @@
 int main(int argc, char ** argv) {
     cxxopts::Options options("libtree", "Show the dependency tree of binaries and optionally bundle them into a single folder.");
 
-#if defined(LIBTREE_HAS_AUXV_HEADER)
+#if defined(LIBTREE_DEFAULT_PLATFORM)
+    auto default_platform = LIBTREE_DEFAULT_PLATFORM;
+#elif defined(LIBTREE_HAS_AUXV_HEADER)
     auto default_platform = reinterpret_cast<char const *>(getauxval(AT_PLATFORM));
 #else
     // Default to x86_64 substitution for PLATFORM if getauxval is not available.
--- a/CMakeLists.txt
+++ b.CMakeLists.txt
@@ -35,6 +35,7 @@
 add_executable(libtree ${CMAKE_CURRENT_SOURCE_DIR}/src/main.cpp)
 target_link_libraries(libtree libtree_lib cxxopts::cxxopts)
 target_compile_definitions(libtree PRIVATE $<$<BOOL:${LIBTREE_HAS_AUXV_HEADER}>:LIBTREE_HAS_AUXV_HEADER>)
+target_compile_definitions(libtree PRIVATE LIBTREE_DEFAULT_PLATFORM=\"${LIBTREE_DEFAULT_PLATFORM}\")
 
 set_property(TARGET libtree_lib PROPERTY CXX_STANDARD 17)
 set_property(TARGET libtree PROPERTY CXX_STANDARD 17)