From d908da01a280feaada9b91065b99c876810fd204 Mon Sep 17 00:00:00 2001
From: Gleb Popov <6yearold@gmail.com>
Date: Fri, 8 Aug 2025 22:28:15 +0300
Subject: [PATCH] Enable building Poco::Trace on FreeBSD

---
 Trace/CMakeLists.txt                | 10 ++++++++++
 Trace/src/binary/elf.hpp            |  2 +-
 Trace/src/elf.cpp                   |  2 +-
 Trace/src/module_base.cpp           |  4 ++--
 Trace/src/object.cpp                |  4 ++--
 Trace/src/platform/platform.hpp     |  3 +++
 Trace/src/platform/program_name.hpp | 12 ++++++++++++
 7 files changed, 31 insertions(+), 6 deletions(-)

diff --git a/Trace/CMakeLists.txt b/Trace/CMakeLists.txt
index 85a19e5c9..ac8ac4e10 100644
--- a/Trace/CMakeLists.txt
+++ b/Trace/CMakeLists.txt
@@ -47,6 +47,16 @@ if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
 	target_compile_definitions (Trace PRIVATE CPPTRACE_DEMANGLE_WITH_CXXABI CPPTRACE_UNWIND_WITH_UNWIND)
 	target_compile_definitions (Trace PRIVATE CPPTRACE_GET_SYMBOLS_WITH_LIBBACKTRACE)
 	target_link_libraries(Trace PRIVATE backtrace)
+elseif (${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
+	find_library(BACKTRACE_LIBRARY backtrace REQUIRED)
+	cmake_path(GET BACKTRACE_LIBRARY PARENT_PATH BACKTRACE_LIBDIR)
+	set(BACKTRACE_INCLUDE_DIR "${BACKTRACE_LIBDIR}/../include")
+	cmake_path(ABSOLUTE_PATH BACKTRACE_INCLUDE_DIR NORMALIZE)
+	find_file(BACKTRACE_H backtrace.h PATHS ${BACKTRACE_INCLUDE_DIR} REQUIRED)
+	target_compile_definitions (Trace PRIVATE CPPTRACE_DEMANGLE_WITH_CXXABI CPPTRACE_UNWIND_WITH_UNWIND)
+	target_compile_definitions (Trace PRIVATE CPPTRACE_GET_SYMBOLS_WITH_LIBBACKTRACE)
+	target_include_directories(Trace PRIVATE ${BACKTRACE_INCLUDE_DIR})
+	target_link_libraries(Trace PRIVATE ${BACKTRACE_LIBRARY})
 elseif (APPLE)
 	target_compile_definitions (Trace PRIVATE CPPTRACE_DEMANGLE_WITH_CXXABI CPPTRACE_UNWIND_WITH_UNWIND)
 	target_compile_definitions (Trace PRIVATE CPPTRACE_GET_SYMBOLS_WITH_LIBDL)
diff --git a/Trace/src/binary/elf.hpp b/Trace/src/binary/elf.hpp
index f63875696..0769d816c 100644
--- a/Trace/src/binary/elf.hpp
+++ b/Trace/src/binary/elf.hpp
@@ -4,7 +4,7 @@
 #include "utils/common.hpp"
 #include "utils/utils.hpp"
 
-#if IS_LINUX
+#if IS_LINUX || IS_FREEBSD
 
 #include <cstdint>
 #include <string>
diff --git a/Trace/src/elf.cpp b/Trace/src/elf.cpp
index 27c2a2096..bb3721a2b 100644
--- a/Trace/src/elf.cpp
+++ b/Trace/src/elf.cpp
@@ -1,6 +1,6 @@
 #include "binary/elf.hpp"
 
-#if IS_LINUX
+#if IS_LINUX || IS_FREEBSD
 
 #include <array>
 #include <cstdint>
diff --git a/Trace/src/module_base.cpp b/Trace/src/module_base.cpp
index 12e2f7c2a..95a41692b 100644
--- a/Trace/src/module_base.cpp
+++ b/Trace/src/module_base.cpp
@@ -8,7 +8,7 @@
 #include <mutex>
 #include <unordered_map>
 
-#if IS_LINUX || IS_APPLE
+#if IS_LINUX || IS_APPLE || IS_FREEBSD
  #include <unistd.h>
  #include <dlfcn.h>
  #if IS_APPLE
@@ -23,7 +23,7 @@
 
 namespace cpptrace {
 namespace detail {
-    #if IS_LINUX
+    #if IS_LINUX || IS_FREEBSD
     Result<std::uintptr_t, internal_error> get_module_image_base(const std::string& object_path) {
         static std::mutex mutex;
         std::lock_guard<std::mutex> lock(mutex);
diff --git a/Trace/src/object.cpp b/Trace/src/object.cpp
index caf65898f..6f0695383 100644
--- a/Trace/src/object.cpp
+++ b/Trace/src/object.cpp
@@ -9,7 +9,7 @@
 #include <mutex>
 #include <unordered_map>
 
-#if IS_LINUX || IS_APPLE
+#if IS_LINUX || IS_APPLE || IS_FREEBSD
  #include <unistd.h>
  #include <dlfcn.h>
  #if IS_LINUX
@@ -21,7 +21,7 @@
 
 namespace cpptrace {
 namespace detail {
-    #if IS_LINUX || IS_APPLE
+    #if IS_LINUX || IS_APPLE || IS_FREEBSD
     #if defined(CPPTRACE_HAS_DL_FIND_OBJECT) || defined(CPPTRACE_HAS_DLADDR1)
     std::string resolve_l_name(const char* l_name) {
         if(l_name != nullptr && l_name[0] != 0) {
diff --git a/Trace/src/platform/platform.hpp b/Trace/src/platform/platform.hpp
index 89206e826..4d9aa7ea9 100644
--- a/Trace/src/platform/platform.hpp
+++ b/Trace/src/platform/platform.hpp
@@ -14,6 +14,9 @@
 #elif defined(__APPLE__)
  #undef IS_APPLE
  #define IS_APPLE 1
+#elif defined(__FreeBSD__)
+ #undef IS_FREEBSD
+ #define IS_FREEBSD 1
 #else
  #error "Unexpected platform"
 #endif
diff --git a/Trace/src/platform/program_name.hpp b/Trace/src/platform/program_name.hpp
index 3257244d2..da9e524fe 100644
--- a/Trace/src/platform/program_name.hpp
+++ b/Trace/src/platform/program_name.hpp
@@ -95,6 +95,18 @@ namespace detail {
 }
 }
 
+#elif IS_FREEBSD
+
+#include <stdlib.h>
+
+namespace cpptrace {
+namespace detail {
+    inline const char* program_name() {
+        return getprogname();
+    }
+}
+}
+
 #endif
 
 #endif