Make Pintos able to build with "gcc -m32" on x86-64 hosts without the

[pintos-anon] / src / Make.config

diff --git a/src/Make.config b/src/Make.config
index b1d480e70ae51453e636057e5b7d556722443825..91c14d00623696983a47483f970e55a590f9bea3 100644 (file)
--- a/src/Make.config
+++ b/src/Make.config
@@ -6,16 +6,24 @@ VPATH = $(SRCDIR)
 
 # Binary utilities.
 # If the host appears to be x86, use the normal tools.
+# If it's x86-64, use the compiler and linker in 32-bit mode.
 # Otherwise assume cross-tools are installed as i386-elf-*.
 X86 = i.86\|pentium.*\|[pk][56]\|nexgen\|viac3\|6x86\|athlon.*
+X86_64 = x86_64
 ifneq (0, $(shell expr `uname -m` : '$(X86)'))
-CC = gcc
-LD = ld
-OBJCOPY = objcopy
+  CC = gcc
+  LD = ld
+  OBJCOPY = objcopy
 else
-CC = i386-elf-gcc
-LD = i386-elf-ld
-OBJCOPY = i386-elf-objcopy
+  ifneq (0, $(shell expr `uname -m` : '$(X86_64)'))
+    CC = gcc -m32
+    LD = ld -melf_i386
+    OBJCOPY = objcopy
+  else
+    CC = i386-elf-gcc
+    LD = i386-elf-ld
+    OBJCOPY = i386-elf-objcopy
+  endif
 endif
 
 ifeq ($(strip $(shell command -v $(CC) 2> /dev/null)),)