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 63d6a226ea5fb3d61c33ae4ef5ce3f8175010e11..91c14d00623696983a47483f970e55a590f9bea3 100644 (file)
--- a/src/Make.config
+++ b/src/Make.config
@@ -2,29 +2,41 @@
 
 SHELL = /bin/sh
 
+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
 
-# Other utilities.
-DD = dd
-RM = rm
-CAT = cat
+ifeq ($(strip $(shell command -v $(CC) 2> /dev/null)),)
+$(warning *** Compiler ($(CC)) not found.  Did you set $$PATH properly?  Please refer to the Getting Started section in the documentation for details. ***)
+endif
 
 # Compiler and assembler invocation.
+DEFINES =
 WARNINGS = -Wall -W -Wstrict-prototypes -Wmissing-prototypes -Wsystem-headers
 CFLAGS = -g -MMD -msoft-float
+CPPFLAGS = -nostdinc -I$(SRCDIR) -I$(SRCDIR)/lib
 ASFLAGS = -Wa,--gstabs -MMD
+LDFLAGS = 
 
 %.o: %.c
        $(CC) -c $< -o $@ $(CFLAGS) $(CPPFLAGS) $(WARNINGS) $(DEFINES)