[systemd-devel] [PATCH] build-sys: use more generic regular expression to generate syscall-list.txt correctly

[Huang Hang]

Currently MIPS and ARM define syscall numbers for multiple ABI in one
<asm/unistd.h>. The #define statements for each syscall are formated as:

 #define __NR_sc_name (BASE_OFFSET + sc_number)

Thus we need a more generic regular expression to match these in awk.

Signed-off-by: Huang Hang <seakage2h at gmail.com>
---
 Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 278da18..2191f78 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1030,7 +1030,7 @@ BUILT_SOURCES += \

 src/core/syscall-list.txt: Makefile
 	$(AM_V_at)$(MKDIR_P) $(dir $@)
-	$(AM_V_GEN)$(CPP) $(AM_CPPFLAGS) $(CPPFLAGS) -dM -include
sys/syscall.h - < /dev/null | $(AWK) '/^#define[ \t]+__NR_[^ ]+[
\t]+[0-9]/ { sub(/__NR_/, "", $$2); print $$2; }' > $@
+	$(AM_V_GEN)$(CPP) $(AM_CPPFLAGS) $(CPPFLAGS) -dM -include
sys/syscall.h - < /dev/null | $(AWK) '/^#define[ \t]+__NR_[^ ]+[
\t]+\(?.*[0-9]+.*\)?/ { sub(/__NR_/, "", $$2); print $$2; }' > $@

 src/core/syscall-from-name.gperf: src/core/syscall-list.txt Makefile
 	$(AM_V_at)$(MKDIR_P) $(dir $@)
-- 
1.7.8.6