From acf7248ec58a29b6666904d18476b3718b22ba13 Mon Sep 17 00:00:00 2001
From: Chris Green <greenc@fnal.gov>
Date: Tue, 10 Mar 2026 16:32:24 -0500
Subject: [PATCH 1/2] Enable compile/link time profiling

---
 CMakeLists.txt | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index dad56423..44ea6e54 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -63,6 +63,27 @@ option(ENABLE_TSAN "Enable Thread Sanitizer" OFF)
 option(ENABLE_ASAN "Enable Address Sanitizer" OFF)
 option(PHLEX_USE_FORM "Enable experimental integration with FORM" OFF)
 option(ENABLE_COVERAGE "Enable code coverage instrumentation" OFF)
+option(ENABLE_BUILD_PROFILING "Enable monitoring of compile and link operations" OFF)
+
+# ##############################################################################
+# Enable collection of compile/link statistics.
+#
+# If lld is available but not default for the current toolset, then use
+# `-DCMAKE_LINKER_TYPE=LLD`
+if (ENABLE_BUILD_PROFILING)
+  set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CMAKE_COMMAND} -E time")
+  set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK "${CMAKE_COMMAND} -E time")
+  if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")
+    add_compile_options("-ftime-trace")
+  endif()
+  if(CMAKE_CXX_COMPILER_LINKER_ID STREQUAL "LLD")
+    message(STATUS "LLD detected (Phlex build) - Enabling tracing")
+    add_link_options("-Wl,--time-trace")
+    add_link_options("-Wl,--Map=phlex_link.map")
+    add_link_options("-Wl,--print-archive-stats=-")
+  endif()
+endif()
+# ##############################################################################
 
 add_compile_options(
   -Wall

From c2b60b7e96c6a564c19888d2348d898408bd25c4 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]"
 <41898282+github-actions[bot]@users.noreply.github.com>
Date: Wed, 11 Mar 2026 13:49:32 +0000
Subject: [PATCH 2/2] Apply cmake-format fixes

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 44ea6e54..b53061a0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,7 +70,7 @@ option(ENABLE_BUILD_PROFILING "Enable monitoring of compile and link operations"
 #
 # If lld is available but not default for the current toolset, then use
 # `-DCMAKE_LINKER_TYPE=LLD`
-if (ENABLE_BUILD_PROFILING)
+if(ENABLE_BUILD_PROFILING)
   set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CMAKE_COMMAND} -E time")
   set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK "${CMAKE_COMMAND} -E time")
   if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")