From: Ben Pfaff <blp@cs.stanford.edu>
Date: Tue, 20 Dec 2005 06:27:07 +0000 (+0000)
Subject: Check for the compiler's availability early in the `make' run, in
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=pintos-anon;a=commitdiff_plain;h=22acef028a140604f5b34705263ba70959fcf4f4

Check for the compiler's availability early in the `make' run, in
Make.config, and give a warning that points to the documentation if we
can't find it.
Also, modify other Makefiles so that Make.config is only included
once, so that the message is only printed once.
---

diff --git a/src/Make.config b/src/Make.config
index 0a1b46a..910ef12 100644
--- a/src/Make.config
+++ b/src/Make.config
@@ -18,6 +18,10 @@ LD = i386-elf-ld
 OBJCOPY = i386-elf-objcopy
 endif
 
+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
diff --git a/src/Makefile.userprog b/src/Makefile.userprog
index 72e35ce..870aae4 100644
--- a/src/Makefile.userprog
+++ b/src/Makefile.userprog
@@ -1,7 +1,5 @@
 # -*- makefile -*-
 
-include $(SRCDIR)/Make.config
-
 $(PROGS): CPPFLAGS += -I$(SRCDIR)/lib/user -I.
 
 # Linker flags.
diff --git a/src/examples/Makefile b/src/examples/Makefile
index a7bba67..e15f824 100644
--- a/src/examples/Makefile
+++ b/src/examples/Makefile
@@ -24,4 +24,5 @@ lineup_SRC = lineup.c
 matmult_SRC = matmult.c
 recursor_SRC = recursor.c
 
+include $(SRCDIR)/Make.config
 include $(SRCDIR)/Makefile.userprog