[Buildroot] [PATCH] blktrace: re-enable on uClibc
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Tue Aug 23 14:40:00 UTC 2016
With a small patch, blktrace can work on uClibc: we simply need to link
with librt to use the posix_spawn*() functions.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
---
.../blktrace/0001-iowatcher-link-with-lrt.patch | 29 ++++++++++++++++++++++
package/blktrace/Config.in | 6 -----
2 files changed, 29 insertions(+), 6 deletions(-)
create mode 100644 package/blktrace/0001-iowatcher-link-with-lrt.patch
diff --git a/package/blktrace/0001-iowatcher-link-with-lrt.patch b/package/blktrace/0001-iowatcher-link-with-lrt.patch
new file mode 100644
index 0000000..3712b9f
--- /dev/null
+++ b/package/blktrace/0001-iowatcher-link-with-lrt.patch
@@ -0,0 +1,29 @@
+From 80d87b99d72034441ea4fbab81f5c80c1ef3b067 Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
+Date: Tue, 23 Aug 2016 16:36:14 +0200
+Subject: [PATCH] iowatcher: link with -lrt
+
+Some C libraries (notably uClibc) have the posix_spawn*() functions in
+librt, so let's link iowatcher with -lrt.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
+---
+ iowatcher/Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/iowatcher/Makefile b/iowatcher/Makefile
+index 7b5101c..502476d 100644
+--- a/iowatcher/Makefile
++++ b/iowatcher/Makefile
+@@ -19,7 +19,7 @@ all: $(ALL)
+ $(CC) -o $*.o -c $(ALL_CFLAGS) $<
+
+ iowatcher: blkparse.o plot.o main.o tracers.o mpstat.o fio.o
+- $(CC) $(ALL_CFLAGS) -o $@ $(filter %.o,$^) -lm
++ $(CC) $(ALL_CFLAGS) -o $@ $(filter %.o,$^) -lm -lrt
+
+ depend:
+ @$(CC) -MM $(ALL_CFLAGS) *.c 1> .depend
+--
+2.7.4
+
diff --git a/package/blktrace/Config.in b/package/blktrace/Config.in
index c17de80..38c0947 100644
--- a/package/blktrace/Config.in
+++ b/package/blktrace/Config.in
@@ -1,7 +1,5 @@
config BR2_PACKAGE_BLKTRACE
bool "blktrace"
- # Uses posix_spawn()
- depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL
depends on BR2_PACKAGE_LIBAIO_ARCH_SUPPORTS
select BR2_PACKAGE_LIBAIO
help
@@ -10,7 +8,3 @@ config BR2_PACKAGE_BLKTRACE
up to user space.
http://git.kernel.dk/?p=blktrace.git;a=summary
-
-comment "blktrace needs a glibc or musl toolchain"
- depends on BR2_PACKAGE_LIBAIO_ARCH_SUPPORTS
- depends on !(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
--
2.7.4
More information about the buildroot
mailing list