From 6467fef4198d9deaf2c9bf47a14ec5fd00dd9b75 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sat, 2 Jan 2016 14:47:57 +0000
Subject: [PATCH] perf: fix musl compatibility
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48067
---
package/devel/perf/Makefile | 6 +++-
package/devel/perf/musl-compat.h | 62 ++++++++++++++++++++++++++++++++
2 files changed, 67 insertions(+), 1 deletion(-)
create mode 100644 package/devel/perf/musl-compat.h
diff --git a/package/devel/perf/Makefile b/package/devel/perf/Makefile
index d6db053173..c999229324 100644
--- a/package/devel/perf/Makefile
+++ b/package/devel/perf/Makefile
@@ -24,7 +24,7 @@ include $(INCLUDE_DIR)/package.mk
define Package/perf
SECTION:=devel
CATEGORY:=Development
- DEPENDS:= @USE_GLIBC +libelf1 +libdw +libpthread +librt +binutils
+ DEPENDS:= @!USE_UCLIBC +libelf1 +libdw +libpthread +librt +binutils
TITLE:=Linux performance monitoring tool
VERSION:=$(LINUX_VERSION)-$(PKG_RELEASE)
URL:=http://www.kernel.org
@@ -57,6 +57,10 @@ MAKE_FLAGS = \
WERROR=0 \
prefix=/usr
+ifdef CONFIG_USE_MUSL
+ MAKE_FLAGS += EXTRA_CFLAGS="-include $(CURDIR)/musl-compat.h -D__UCLIBC__"
+endif
+
define Build/Compile
+$(MAKE_FLAGS) $(MAKE) $(PKG_JOBS) \
-C $(PKG_BUILD_DIR) \
diff --git a/package/devel/perf/musl-compat.h b/package/devel/perf/musl-compat.h
new file mode 100644
index 0000000000..ecfbec6a29
--- /dev/null
+++ b/package/devel/perf/musl-compat.h
@@ -0,0 +1,62 @@
+#ifndef __PERF_MUSL_COMPAT_H
+#define __PERF_MUSL_COMPAT_H
+
+#include <sys/ioctl.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <syscall.h>
+#include <sched.h>
+
+#undef _IOWR
+#undef _IOR
+#undef _IOW
+#undef _IOC
+#undef _IO
+
+/* Change XSI compliant version into GNU extension hackery */
+#define strerror_r(err, buf, buflen) \
+ (strerror_r(err, buf, buflen) ? NULL : buf)
+
+#define _SC_LEVEL1_DCACHE_LINESIZE -1
+
+static inline long sysconf_wrap(int name)
+{
+ FILE *f;
+ int val;
+
+ switch (name) {
+ case _SC_LEVEL1_DCACHE_LINESIZE:
+ f = fopen("/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size", "r");
+ if (!f)
+ return 0;
+
+ if (fscanf(f, "%d", &val) != 1)
+ return 0;
+
+ fclose(f);
+ return val;
+ default:
+ return sysconf(name);
+ }
+}
+
+#define sysconf(_n) sysconf_wrap(_n)
+
+static inline int compat_sched_getcpu(void)
+{
+#ifdef __NR_getcpu
+ unsigned int val;
+
+ if (syscall(__NR_getcpu, &val))
+ return -1;
+
+ return val;
+#else
+ return -1;
+#endif
+}
+
+#define sched_getcpu compat_sched_getcpu
+
+#endif
--
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