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This patch is needed on newer uclibc becuase the uclibc header generation mechanism generates the sysnum.h properly NR_cacheflush is defined for ARM but there is no cachectl.h file which is exported to userspace. Strace assumes that if SYS_cacheflush is defined than it icludes asm/cachectl.h which breaks the build for ARM now.
This patch adds a check for ARM architecture.
-Khem
Here is error
| if ccache arm-angstrom-linux-uclibcgnueabi-gcc -march=armv5te -mtune=arm926ej-s -DHAVE_CONFIG_H -I. -I. -I. -Ilinux/arm -I./linux/arm -Ilinux -I./linux -isystem/home/kraj/work/oe/build/uclibc/tmp-omap5912osk/staging/arm-angstrom-linux-uclibcgnueabi/usr/include -Wall -isystem/home/kraj/work/oe/build/uclibc/tmp-omap5912osk/staging/arm-angstrom-linux-uclibcgnueabi/usr/include -fexpensive-optimizations -fomit-frame-pointer -frename-registers -Os -MT term.o -MD -MP -MF ".deps/term.Tpo" -c -o term.o term.c; \
| then mv -f ".deps/term.Tpo" ".deps/term.Po"; else rm -f ".deps/term.Tpo"; exit 1; fi
| system.c:69:26: error: asm/cachectl.h: No such file or directory
| make[1]: *** [system.o] Error 1
| make[1]: *** Waiting for unfinished jobs....
| signal.c: In function 'sys_sigreturn':
| signal.c:1221: warning: passing argument 4 of 'ptrace' makes integer from pointer without a cast
| make[1]: Leaving directory `/home/kraj/work/oe/build/uclibc/tmp-omap5912osk/work/armv5te-angstrom-linux-uclibcgnueabi/strace-4.5.14-r5/strace-4.5.14'
| make: *** [all] Error 2
| FATAL: oe_runmake failed
Index: strace-4.5.14/system.c
===================================================================
--- strace-4.5.14.orig/system.c 2008-05-15 20:23:16.000000000 -0700
+++ strace-4.5.14/system.c 2008-05-15 20:24:03.000000000 -0700
@@ -65,7 +65,7 @@
#include <linux/capability.h>
#endif
-#ifdef SYS_cacheflush
+#if defined SYS_cacheflush && !defined ARM
#include <asm/cachectl.h>
#endif
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