[PATCH 3/6] tools: Correct PTHREAD options in config/StdGNU.mk

[Ian Jackson <ian.jackson@eu.citrix.com>]

It is not correct to say -lpthread.  The correct option is -pthread,
which may have sundry other effects on code generation etc.  It needs
to be passed both to compilation and linking.

So abolish PTHREAD_LIBS in StdGNU.mk, and add PTHREAD_CFLAGS and
PTHREAD_LDFLAGS instead.  Fix the one user (libxc).

There are still some other users in tree which pass -pthread or
-lpthread by adding it as a literal to their own compiler options.
These will be fixed in a later version of this patch.

Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
---
 config/StdGNU.mk     |    4 +++-
 tools/libxc/Makefile |    4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/config/StdGNU.mk b/config/StdGNU.mk
index 2af2841..97445a7 100644
--- a/config/StdGNU.mk
+++ b/config/StdGNU.mk
@@ -68,10 +68,12 @@ XEN_SCRIPT_DIR = $(XEN_CONFIG_DIR)/scripts
 
 SOCKET_LIBS =
 CURSES_LIBS = -lncurses
-PTHREAD_LIBS = -lpthread
 UTIL_LIBS = -lutil
 DLOPEN_LIBS = -ldl
 
+PTHREAD_CFLAGS = -pthread
+PTHREAD_LDFLAGS = -pthread
+
 SONAME_LDFLAG = -soname
 SHLIB_LDFLAGS = -shared
 
diff --git a/tools/libxc/Makefile b/tools/libxc/Makefile
index b5e7022..09e2f5f 100644
--- a/tools/libxc/Makefile
+++ b/tools/libxc/Makefile
@@ -72,6 +72,8 @@ CFLAGS   += -I. $(CFLAGS_xeninclude)
 # Needed for posix_fadvise64() in xc_linux.c
 CFLAGS-$(CONFIG_Linux) += -D_GNU_SOURCE
 
+CFLAGS	+= $(PTHREAD_CFLAGS)
+
 # Define this to make it possible to run valgrind on code linked with these
 # libraries.
 #CFLAGS   += -DVALGRIND -O0 -ggdb3
@@ -156,7 +158,7 @@ libxenctrl.so.$(MAJOR): libxenctrl.so.$(MAJOR).$(MINOR)
 	ln -sf $< $@
 
 libxenctrl.so.$(MAJOR).$(MINOR): $(CTRL_PIC_OBJS)
-	$(CC) $(LDFLAGS) -Wl,$(SONAME_LDFLAG) -Wl,libxenctrl.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $^ $(DLOPEN_LIBS) $(PTHREAD_LIBS) $(APPEND_LDFLAGS)
+	$(CC) $(LDFLAGS) $(PTHREAD_LDFLAGS) -Wl,$(SONAME_LDFLAG) -Wl,libxenctrl.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $^ $(DLOPEN_LIBS) $(PTHREAD_LIBS) $(APPEND_LDFLAGS)
 
 # libxenguest
 
-- 
1.7.2.5