From 68db123a2f37a66aea218fa48a5bab8ea6b12951 Mon Sep 17 00:00:00 2001
From: "felix.morgner@ost.ch" <felix.morgner@gmail.com>
Date: Sat, 7 Oct 2023 10:45:45 +0200
Subject: x86_64: implement first bootable kernel

---
 cmake/Platforms/x86_64.cmake | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 cmake/Platforms/x86_64.cmake

(limited to 'cmake')

diff --git a/cmake/Platforms/x86_64.cmake b/cmake/Platforms/x86_64.cmake
new file mode 100644
index 0000000..9e727cf
--- /dev/null
+++ b/cmake/Platforms/x86_64.cmake
@@ -0,0 +1,23 @@
+execute_process(COMMAND "x86_64-none-elf-g++" "-print-file-name=crtbegin.o"
+  OUTPUT_VARIABLE CRT_BEGIN
+  ERROR_QUIET
+)
+string(STRIP "${CRT_BEGIN}" CRT_BEGIN)
+mark_as_advanced(CRT_BEGIN)
+
+string(REGEX REPLACE "/crtbegin.o" "" CMAKE_SYSROOT "${CRT_BEGIN}")
+mark_as_advanced(CMAKE_SYSROOT)
+
+set(CMAKE_CXX_FLAGS_INIT "-m64 -mno-red-zone -mcmodel=large")
+set(CMAKE_EXE_LINKER_FLAGS_INIT "-nostartfiles")
+set(CMAKE_CXX_LINK_EXECUTABLE
+  "<CMAKE_CXX_COMPILER> \
+  <FLAGS> \
+  <CMAKE_CXX_LINK_FLAGS> \
+  <LINK_FLAGS> \
+  ${CMAKE_SYSROOT}/crtbegin.o \
+  <OBJECTS> \
+  -o <TARGET> \
+  <LINK_LIBRARIES> \
+  ${CMAKE_SYSROOT}/crtend.o"
+)
-- 
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