From 71e8ec899aed517e21f359d6f06ab86244179479 Mon Sep 17 00:00:00 2001
From: "kaf24@firebug.cl.cam.ac.uk" <kaf24@firebug.cl.cam.ac.uk>
Date: Thu, 12 Jan 2006 14:27:20 +0100
Subject: [PATCH] Adds a check to vtpm_manager and vtpm Makefiles to verify
 openssl and gmp dev files are installed. If files are missing, Makefile exits
 with a message indicating that these tools will not be built, rather than an
 error, which prevents Xen from building.

Signed-off-by: Vinnie Scarlata <vincent.r.scarlata@intel.com>
---
 tools/vtpm/Makefile         | 13 +++++++++++--
 tools/vtpm/Rules.mk         |  2 ++
 tools/vtpm_manager/Makefile | 11 ++++++++---
 3 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/tools/vtpm/Makefile b/tools/vtpm/Makefile
index a1c8aa6438..8224a9d304 100644
--- a/tools/vtpm/Makefile
+++ b/tools/vtpm/Makefile
@@ -11,6 +11,8 @@ VTPM_DIR = vtpm
 # Emulator tarball name
 TPM_EMULATOR_TARFILE = tpm_emulator-0.2b.tar.gz
 
+GMP_HEADER = /usr/include/gmp.h
+
 all: build
 
 build: $(TPM_EMULATOR_DIR) $(VTPM_DIR) build_sub
@@ -55,5 +57,12 @@ $(VTPM_DIR): $(TPM_EMULATOR_TARFILE)
 	patch -p1 <../vtpm.patch
 
 build_sub:
-	$(MAKE) -C $(TPM_EMULATOR_DIR)
-	$(MAKE) -C $(VTPM_DIR)
+	if [ -e $(GMP_HEADER) ]; then \
+		$(MAKE) -C $(VTPM_DIR); \
+		if [ "$(BUILD_EMULATOR)" = "y" ]; then \
+			$(MAKE) -C $(TPM_EMULATOR_DIR); \
+		fi \
+	else \
+		echo "*** Unable to build VTPMs. libgmp could not be found."; \
+	fi
+
diff --git a/tools/vtpm/Rules.mk b/tools/vtpm/Rules.mk
index e840df141f..93b84cdaa5 100644
--- a/tools/vtpm/Rules.mk
+++ b/tools/vtpm/Rules.mk
@@ -33,5 +33,7 @@ $(OBJS): $(SRCS)
 
 -include $(DEP_FILES)
 
+BUILD_EMULATOR = n
+
 # Make sure these are just rules
 .PHONY : all build install clean
diff --git a/tools/vtpm_manager/Makefile b/tools/vtpm_manager/Makefile
index dddfa5160b..16825a2279 100644
--- a/tools/vtpm_manager/Makefile
+++ b/tools/vtpm_manager/Makefile
@@ -4,13 +4,18 @@ XEN_ROOT = ../..
 include $(XEN_ROOT)/tools/vtpm_manager/Rules.mk
 
 SUBDIRS		= crypto tcs util manager
+OPENSSL_HEADER	= /usr/include/openssl/crypto.h
 
 all: build
 
 build:
-	@set -e; for subdir in $(SUBDIRS); do \
-		$(MAKE) -C $$subdir $@; \
-	done
+	if [ -e $(OPENSSL_HEADER) ]; then \
+		@set -e; for subdir in $(SUBDIRS); do \
+			$(MAKE) -C $$subdir $@; \
+		done; \
+	else \
+		echo "*** Cannot build vtpm_manager: OpenSSL developement files missing."; \
+	fi
 
 install: build
 	@set -e; for subdir in $(SUBDIRS); do \
-- 
2.30.2