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Compilation fixes

PATCH In review Prerna Saxena 2 participants 2 messages Aug 5, 2010 Kbuild

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PATCH 1/1 Compilation fixes

Fix to ensure rebuild is properly triggered when switching trace backends using ./configure.
Also, when using the 'ust' backend, check if the relevant headers are available at host.

---
 Makefile  |    4 ++--
 configure |   20 +++++++++++++++++---
 2 files changed, 19 insertions(+), 5 deletions(-)
Makefile +2 -2
index 8831174..3bd41ce 100644
@@ -132,10 +132,10 @@ bt-host.o: QEMU_CFLAGS += $(BLUEZ_CFLAGS)
 
 iov.o: iov.c iov.h
 
-trace.h: $(SRC_PATH)/trace-events
+trace.h: $(SRC_PATH)/trace-events config-host.mak
 	$(call quiet-command,sh $(SRC_PATH)/tracetool --$(TRACE_BACKEND) -h < $< > $@,"  GEN   $@")
 
-trace.c: $(SRC_PATH)/trace-events
+trace.c: $(SRC_PATH)/trace-events config-host.mak
 	$(call quiet-command,sh $(SRC_PATH)/tracetool --$(TRACE_BACKEND) -c < $< > $@,"  GEN   $@")
 
 trace.o: trace.c $(GENERATED_HEADERS)
configure +17 -3
index fe1b027..ee9f1e3 100755
@@ -2011,6 +2011,23 @@ if test "$?" -ne 0 ; then
   exit 1
 fi
 
+##########################################
+# For 'ust' backend, test if ust headers are present
+if test "$trace_backend" = "ust"; then
+  cat > $TMPC << EOF
+#include <ust/tracepoint.h>
+#include <ust/marker.h>
+int main(void) { return 0; }
+EOF
+  if compile_prog "" "" ; then
+    LIBS="-lust $LIBS"
+  else
+    echo "ERROR: Trace backend 'ust' does not have relevant headers available"
+    echo "       on the host. Pls choose a different backend."
+    exit 1
+  fi
+fi
+##########################################
 # End of CC checks
 # After here, no more $cc or $ld runs
 
@@ -2392,9 +2409,6 @@ echo "TRACE_BACKEND=$trace_backend" >> $config_host_mak
 if test "$trace_backend" = "simple"; then
   echo "CONFIG_SIMPLE_TRACE=y" >> $config_host_mak
 fi
-if test "$trace_backend" = "ust"; then
-  LIBS="-lust $LIBS"
-fi
 # Set the appropriate trace file.
 if test "$trace_backend" = "simple"; then
   trace_file="\"$trace_file-%u\""
Signature · 10 lines
1.6.2.5



-- 
Prerna Saxena

Linux Technology Centre,
IBM Systems and Technology Lab,
Bangalore, India
#1 lore raw
Quoted 10 lines · Prerna Saxena

Fix to ensure rebuild is properly triggered when switching trace backends using ./configure.
Also, when using the 'ust' backend, check if the relevant headers are available at host.

---
 Makefile  |    4 ++--
 configure |   20 +++++++++++++++++---
 2 files changed, 19 insertions(+), 5 deletions(-)

Applied thanks!

http://repo.or.cz/w/qemu/stefanha.git/commitdiff/431b29107008775db1dd8c4eb69dc59573017d98

Before submitting the tracing branch for qemu.git I'd like to break this in half and squash the halves with the trace-events file and UST commits.

Stefan