From daa14edc0d7eaf724b2eb97d66e1d3b892167670 Mon Sep 17 00:00:00 2001
From: Arun Thomas <arun@minix3.org>
Date: Tue, 28 Jun 2011 15:34:19 +0200
Subject: [PATCH] kernel: make clang-buildable

---
 kernel/Makefile                 | 15 ++++++++----
 kernel/arch/i386/kernel.lds     | 15 +++---------
 kernel/arch/i386/kernel_elf.lds | 43 ---------------------------------
 3 files changed, 13 insertions(+), 60 deletions(-)
 delete mode 100644 kernel/arch/i386/kernel_elf.lds

diff --git a/kernel/Makefile b/kernel/Makefile
index f98e15c37..a431e6633 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -21,22 +21,27 @@ CFLAGS += -D__kernel__
 .if ${COMPILER_TYPE} == "ack"
 LDFLAGS+= -.o
 .elif ${COMPILER_TYPE} == "gnu"
+CFLAGS+=-march=i386
 CPPFLAGS+= -ffreestanding -fno-stack-protector
-.if ${OBJECT_FMT} == "ELF"
-LDFLAGS+= -T ${.CURDIR}/arch/${ARCH}/kernel_elf.lds
-.else
 LDFLAGS+= -T ${.CURDIR}/arch/${ARCH}/kernel.lds
-.endif
 LDFLAGS+= -nostdlib -L${LIBDIR}
-CFLAGS+=-march=i386
+.endif
+
 .if (${NBSD_LIBC} != "no")
 LDADD+= -lminlib
 DPADD+= ${LIBMINLIB}
 CPPFLAGS+= -D_NETBSD_SOURCE
 .else
+
+.if ${CC} == "gcc"
 DPADD+=	${LIBC}
 LDADD+=	-lgcc -lc -lgcc
+.elif ${CC} == "clang"
+DPADD+=	${LIBC}
+LDADD+= -L/usr/pkg/lib
+LDADD+= -lCompilerRT-Generic -lc -lCompilerRT-Generic
 .endif
+
 .endif
 
 CPPFLAGS+=	-I${.CURDIR} -I${.CURDIR}/arch/${ARCH}/include -I${MINIXSRCDIR}
diff --git a/kernel/arch/i386/kernel.lds b/kernel/arch/i386/kernel.lds
index bdb27862b..2e290f383 100644
--- a/kernel/arch/i386/kernel.lds
+++ b/kernel/arch/i386/kernel.lds
@@ -2,12 +2,7 @@ OUTPUT_ARCH("i386")
 ENTRY(MINIX)
 SECTIONS
 {
-	. = 0x0;
-	_text = .;
-	begtext = .;
-	.text.head . : AT (0x0) {
-		*(.text.head)
-	}
+	. = 0x200000 + SIZEOF_HEADERS;
 	.text . : AT (ADDR(.text) - 0x0000) {
 		*(.text)
 		*(.text.*)
@@ -16,8 +11,6 @@ SECTIONS
 	_etext = .;
 	etext = .;
 
-	_data = .;
-	begdata = .;
 	.data . : AT (ADDR(.data) - 0x0000) {
 		_rodata = .;
 		/* kernel data starts with this magic number */
@@ -27,17 +20,15 @@ SECTIONS
 		_erodata = .;
 		*(.data)
 		*(.data.*)
+		. = ALIGN(4096);
 	}
 	_edata = .;
-	_bss = .;
-	begbss = .;
+
 	.bss . : AT (ADDR(.bss) - 0x0000) {
 		*(.bss)
 		*(.bss.*)
 		*(COMMON)
 	}
-	_ebss = .;
-	endbss = .;
 	_end = .;
 	end = .;
 
diff --git a/kernel/arch/i386/kernel_elf.lds b/kernel/arch/i386/kernel_elf.lds
deleted file mode 100644
index 2e290f383..000000000
--- a/kernel/arch/i386/kernel_elf.lds
+++ /dev/null
@@ -1,43 +0,0 @@
-OUTPUT_ARCH("i386")
-ENTRY(MINIX)
-SECTIONS
-{
-	. = 0x200000 + SIZEOF_HEADERS;
-	.text . : AT (ADDR(.text) - 0x0000) {
-		*(.text)
-		*(.text.*)
-		. = ALIGN(4096);
-	}
-	_etext = .;
-	etext = .;
-
-	.data . : AT (ADDR(.data) - 0x0000) {
-		_rodata = .;
-		/* kernel data starts with this magic number */
-		SHORT(0x526f);
-		*(.rodata)
-		*(.rodata.*)
-		_erodata = .;
-		*(.data)
-		*(.data.*)
-		. = ALIGN(4096);
-	}
-	_edata = .;
-
-	.bss . : AT (ADDR(.bss) - 0x0000) {
-		*(.bss)
-		*(.bss.*)
-		*(COMMON)
-	}
-	_end = .;
-	end = .;
-
-	/DISCARD/ :
-	{
-		*(.eh_frame)
-		*(.comment)
-		*(.comment.*)
-		*(.note)
-		*(.note.*)
-	}
-}
-- 
2.44.0