From 69fa5020d26a9253d8fe349328ac12525979aa90 Mon Sep 17 00:00:00 2001
From: David Woodhouse <dwmw2@infradead.org>
Date: Mon, 15 Dec 2025 23:23:46 +0000
Subject: [PATCH] Re-remove compilation_time_ from the app

---
 esphome/core/application.h | 9 +--------
 esphome/core/config.py     | 1 -
 tests/dummy_main.cpp       | 2 +-
 3 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/esphome/core/application.h b/esphome/core/application.h
index 7915780946..dfc7f23f51 100644
--- a/esphome/core/application.h
+++ b/esphome/core/application.h
@@ -103,7 +103,7 @@ static const uint32_t TEARDOWN_TIMEOUT_REBOOT_MS = 1000;  // 1 second for quick
 class Application {
  public:
   void pre_setup(const std::string &name, const std::string &friendly_name, const char *comment,
-                 const char *compilation_time, bool name_add_mac_suffix) {
+                 bool name_add_mac_suffix) {
     arch_init();
     this->name_add_mac_suffix_ = name_add_mac_suffix;
     if (name_add_mac_suffix) {
@@ -123,7 +123,6 @@ class Application {
       this->friendly_name_ = friendly_name;
     }
     this->comment_ = comment;
-    this->compilation_time_ = compilation_time;
   }
 
 #ifdef USE_DEVICES
@@ -263,11 +262,6 @@ class Application {
 
   bool is_name_add_mac_suffix_enabled() const { return this->name_add_mac_suffix_; }
 
-  /// deprecated: use get_build_time() or get_build_time_string() instead.
-  std::string get_compilation_time() const { return this->compilation_time_; }
-  /// Get the compilation time as StringRef (for API usage)
-  StringRef get_compilation_time_ref() const { return StringRef(this->compilation_time_); }
-
   /// Size of buffer required for build time string (including null terminator)
   static constexpr size_t BUILD_TIME_STR_SIZE = 26;
 
@@ -494,7 +488,6 @@ class Application {
   // Pointer-sized members first
   Component *current_component_{nullptr};
   const char *comment_{nullptr};
-  const char *compilation_time_{nullptr};
 
   // std::vector (3 pointers each: begin, end, capacity)
   // Partitioned vector design for looping components
diff --git a/esphome/core/config.py b/esphome/core/config.py
index 3adaf7eb9e..97157b6f92 100644
--- a/esphome/core/config.py
+++ b/esphome/core/config.py
@@ -501,7 +501,6 @@ async def to_code(config: ConfigType) -> None:
             config[CONF_NAME],
             config[CONF_FRIENDLY_NAME],
             config.get(CONF_COMMENT, ""),
-            cg.RawExpression('__DATE__ ", " __TIME__'),
             config[CONF_NAME_ADD_MAC_SUFFIX],
         )
     )
diff --git a/tests/dummy_main.cpp b/tests/dummy_main.cpp
index afd393c095..5849f4eb95 100644
--- a/tests/dummy_main.cpp
+++ b/tests/dummy_main.cpp
@@ -12,7 +12,7 @@
 using namespace esphome;
 
 void setup() {
-  App.pre_setup("livingroom", "LivingRoom", "comment", __DATE__ ", " __TIME__, false);
+  App.pre_setup("livingroom", "LivingRoom", "comment", false);
   auto *log = new logger::Logger(115200, 512);  // NOLINT
   log->pre_setup();
   log->set_uart_selection(logger::UART_SELECTION_UART0);