Include build info in binary

.gitignore

@@ -49,6 +49,8 @@ stage/
 build
 bin
 btop
+/obj/
+config.h
 .*/
 
 # Optional libraries

CMakeLists.txt

@@ -76,6 +76,21 @@ if(NOT CXX_HAVE_RANGES)
   message(FATAL_ERROR "The compiler doesn't support <ranges>")
 endif()
 
+# Generate build info
+execute_process(
+  COMMAND "git" "rev-parse" "--short" "HEAD"
+  WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+  OUTPUT_VARIABLE GIT_COMMIT
+  OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+set(CONFIGURE_COMMAND
+    "cmake -DBTOP_STATIC=${BTOP_STATIC} -DBTOP_USE_MOLD=${BTOP_USE_MOLD} -DBTOP_FORTIFY=${BTOP_FORTIFY} -DBTOP_GPU=${BTOP_GPU}"
+)
+get_filename_component(CXX_COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
+set(COMPILER "${CXX_COMPILER_BASENAME}")
+set(COMPILER_VERSION "${CMAKE_CXX_COMPILER_VERSION}")
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h @ONLY IMMEDIATE)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
 # Check for and enable LTO
 check_ipo_supported(RESULT ipo_supported)
 if(ipo_supported AND BTOP_LTO)

Makefile

@@ -163,6 +163,12 @@ else
 	LTO := $(THREADS)
 endif
 
+GIT_COMMIT := $(shell git rev-parse --short HEAD 2> /dev/null || true)
+CONFIGURE_COMMAND := $(MAKE) STATIC=$(STATIC) FORTIFY_SOURCE=$(FORTIFY_SOURCE)
+ifeq ($(PLATFORM_LC),linux)
+	CONFIGURE_COMMAND +=  GPU_SUPPORT=$(GPU_SUPPORT) RSMI_STATIC=$(RSMI_STATIC)
+endif
+
 #? The Directories, Source, Includes, Objects and Binary
 SRCDIR		:= src
 INCDIRS		:= include $(wildcard lib/**/include)
@@ -182,7 +188,7 @@ OPTFLAGS			:= -O2 -ftree-vectorize -flto=$(LTO)
 LDCXXFLAGS			:= -pthread -D_GLIBCXX_ASSERTIONS -D_FILE_OFFSET_BITS=64 $(GOODFLAGS) $(ADDFLAGS)
 override CXXFLAGS	+= $(REQFLAGS) $(LDCXXFLAGS) $(OPTFLAGS) $(WARNFLAGS)
 override LDFLAGS	+= $(LDCXXFLAGS) $(OPTFLAGS) $(WARNFLAGS)
-INC					:= $(foreach incdir,$(INCDIRS),-isystem $(incdir)) -I$(SRCDIR)
+INC					:= $(foreach incdir,$(INCDIRS),-isystem $(incdir)) -I$(SRCDIR) -I$(BUILDDIR)
 SU_USER				:= root
 
 ifdef DEBUG
@@ -222,7 +228,7 @@ endif
 
 #? Default Make
 .ONESHELL:
-all: | info rocm_smi info-quiet directories btop
+all: | info rocm_smi info-quiet directories config.h btop
 
 ifneq ($(QUIET),true)
 info:
@@ -267,6 +273,13 @@ directories:
 	@$(VERBOSE) || printf "mkdir -p $(BUILDDIR)/$(PLATFORM_DIR)\n"
 	@mkdir -p $(BUILDDIR)/$(PLATFORM_DIR)
 
+config.h: $(BUILDDIR)/config.h
+
+$(BUILDDIR)/config.h: $(SRCDIR)/config.h.in | directories
+	@$(QUIET) || printf "\033[1mConfiguring $(BUILDDIR)/config.h\033[0m\n"
+	@$(VERBOSE) || printf 'sed -e "s|@GIT_COMMIT@|$(GIT_COMMIT)|" -e "s|@CONFIGURE_COMMAND@|$(CONFIGURE_COMMAND)|" -e "s|@COMPILER@|$(CXX)|" -e "s|@COMPILER_VERSION@|$(CXX_VERSION)|" $< | tee $@ > /dev/null\n'
+	@sed -e "s|@GIT_COMMIT@|$(GIT_COMMIT)|" -e "s|@CONFIGURE_COMMAND@|$(CONFIGURE_COMMAND)|" -e "s|@COMPILER@|$(CXX)|" -e "s|@COMPILER_VERSION@|$(CXX_VERSION)|" $< | tee $@ > /dev/null
+
 #? Clean only Objects
 clean:
 	@printf "\033[1;91mRemoving: \033[1;97mbuilt objects...\033[0m\n"
@@ -362,7 +375,7 @@ btop: $(OBJECTS) | rocm_smi directories
 
 #? Compile
 .ONESHELL:
-$(BUILDDIR)/%.$(OBJEXT): $(SRCDIR)/%.$(SRCEXT) | rocm_smi directories
+$(BUILDDIR)/%.$(OBJEXT): $(SRCDIR)/%.$(SRCEXT) | rocm_smi directories config.h
 	@sleep 0.3 2>/dev/null || true
 	@TSTAMP=$$(date +%s 2>/dev/null || echo "0")
 	@$(QUIET) || printf "\033[1;97mCompiling $<\033[0m\n"
@@ -371,4 +384,4 @@ $(BUILDDIR)/%.$(OBJEXT): $(SRCDIR)/%.$(SRCEXT) | rocm_smi directories
 	@printf "\033[1;92m$$($(PROGRESS))$(P)\033[10D\033[5C-> \033[1;37m$@ \033[100D\033[38C\033[1;93m(\033[1;97m$$(du -ah $@ | cut -f1)iB\033[1;93m) \033[92m(\033[97m$$($(DATE_CMD) -d @$$(expr $$($(DATE_CMD) +%s 2>/dev/null || echo "0") - $${TSTAMP} 2>/dev/null) -u +%Mm:%Ss 2>/dev/null | sed 's/^00m://' || echo '')\033[92m)\033[0m\n"
 
 #? Non-File Targets
-.PHONY: all msg help pre
+.PHONY: all config.h msg help pre

src/btop.cpp

@@ -52,6 +52,7 @@ tab-size = 4
 #include "btop_theme.hpp"
 #include "btop_draw.hpp"
 #include "btop_menu.hpp"
+#include "config.h"
 #include "fmt/core.h"
 
 using std::atomic;
@@ -115,6 +116,19 @@ namespace Global {
 	int arg_update = 0;
 }
 
+static void print_version() {
+	if constexpr (GIT_COMMIT.empty()) {
+		fmt::print("btop version: {}\n", Global::Version);
+	} else {
+		fmt::print("btop version: {}+{}\n", Global::Version, GIT_COMMIT);
+	}
+}
+
+static void print_version_with_build_info() {
+	print_version();
+	fmt::print("Compiled with: {} ({})\nConfigured with: {}\n", COMPILER, COMPILER_VERSION, CONFIGURE_COMMAND);
+}
+
 //* A simple argument parser
 void argumentParser(const int argc, char **argv) {
 	for(int i = 1; i < argc; i++) {
@@ -136,8 +150,12 @@ void argumentParser(const int argc, char **argv) {
 			);
 			exit(0);
 		}
-		else if (is_in(argument, "-v", "--version")) {
-			fmt::println("btop version: {}", Global::Version);
+		else if (is_in(argument, "-v")) {
+			print_version();
+			exit(0);
+		}
+		else if (is_in(argument, "--version")) {
+			print_version_with_build_info();
 			exit(0);
 		}
 		else if (is_in(argument, "-lc", "--low-color")) {

src/config.h.in

@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <string_view>
+
+constexpr std::string_view GIT_COMMIT        = "@GIT_COMMIT@";
+constexpr std::string_view COMPILER          = "@COMPILER@";
+constexpr std::string_view COMPILER_VERSION  = "@COMPILER_VERSION@";
+constexpr std::string_view CONFIGURE_COMMAND = "@CONFIGURE_COMMAND@";