urt: Add user run-time library groundwork

Signed-off-by: Chloe M. <chloe@mensia.org>
2026-07-15 07:52:57 +00:00
parent 322985d8a3
commit a45f1df00d
8 changed files with 144 additions and 0 deletions
@@ -0,0 +1,51 @@
+#
+# Copyright (c) 2026, Chloe M.
+# Provided under the BSD-3 clause
+#
+# Description:  User build flags, etc
+# Author:       Chloe M.
+#
+
+.SILENT:
+PROMPT := printf "%s\t\t%s\n"
+
+ifeq ($(PT_TARGET_ARCH), amd64)
+	CC_TARGET = x86_64-unknown-elf
+else
+	CC_TARGET =
+endif
+
+CC =	\
+	clang
+ld =	\
+	ld
+
+SYS_CFLAGS =			\
+	-nostdlib			\
+	-nostdinc			\
+	-ffreestanding		\
+	-fexceptions		\
+	-target $(CC_TARGET)\
+	-Wno-attributes		\
+	-Wno-multichar		\
+	-fno-stack-protector\
+	-I$(PT_PROJECT_ROOT)/sdk/head
+
+ifeq ($(PT_TARGET_ARCH),amd64)
+	SYS_CFLAGS += 		\
+		-mno-sse		\
+		-mno-sse2		\
+		-mno-sse3		\
+		-mno-avx		\
+		-mno-avx2		\
+		-mno-80387		\
+		-mno-3dnow		\
+		-mno-mmx
+endif
+
+PASSDOWN_ARGS = \
+	ARCH=$(PT_TARGET_ARCH)		\
+	SYS_CC=$(CC)				\
+	SYS_LD=$(LD)				\
+	SYS_CFLAGS="$(SYS_CFLAGS)"	\
+	USER_LDS=$(PT_PROJECT_ROOT)/service/urt/dev/link.ld