all_errnos/all_syscalls: don't hardcode AWK invocation

Use the buildsystem to find a usable awk implementation and use that.

Reported-by: Firas Khalil Khana <firasuke@gmail.com>
Link: https://github.com/util-linux/util-linux/pull/2949
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
https://lore.kernel.org/util-linux/31ccace2e5912ffc428e065cd66764088c625c4d.camel@physik.fu-berlin.de/
Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>

5 files changed, 14 insertions, 6 deletions

diff --git a/configure.ac b/configure.ac
index 2fff2de09d..2e6e0eed6c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -132,6 +132,7 @@ AC_PROG_CC
 AM_PROG_CC_C_O
 AC_PROG_MKDIR_P
 AC_PROG_YACC
+AC_PROG_AWK
 
 # Don't use autotools integrated LEX/YACC support for libsmartcols
 AC_PATH_PROG([FLEX], [flex])
diff --git a/meson.build b/meson.build
index 21822f0bd4..bc8c40471a 100644
--- a/meson.build
+++ b/meson.build
@@ -896,6 +896,7 @@ conf.set('USE_TTY_GROUP', have ? 1 : false)
 
 bison = find_program('bison')
 flex = find_program('flex')
+awk = find_program('gawk', 'mawk', 'nawk', 'awk')
 
 build_hwclock = not get_option('build-hwclock').disabled()
 bison_gen = generator(
@@ -2768,7 +2769,8 @@ endif
 errnos_h = custom_target('errnos.h',
   input : 'tools/all_errnos',
   output : 'errnos.h',
-  command : ['tools/all_errnos', cc.cmd_array(), get_option('c_args')],
+  command : ['tools/all_errnos', awk.full_path(),
+             cc.cmd_array(), get_option('c_args')],
 )
 
 opt = not get_option('build-lsfd').require(lib_rt.found()).disabled()
@@ -3085,7 +3087,8 @@ endif
 syscalls_h = custom_target('syscalls.h',
   input : 'tools/all_syscalls',
   output : 'syscalls.h',
-  command : ['tools/all_syscalls', cc.cmd_array(), get_option('c_args')],
+  command : ['tools/all_syscalls', awk.full_path(),
+             cc.cmd_array(), get_option('c_args')],
 )
 
 if cc.compiles(fs.read('include/audit-arch.h'), name : 'has AUDIT_ARCH_NATIVE')
diff --git a/misc-utils/Makemodule.am b/misc-utils/Makemodule.am
index 7622a5d7be..841275eb6e 100644
--- a/misc-utils/Makemodule.am
+++ b/misc-utils/Makemodule.am
@@ -1,6 +1,6 @@
 errnos.h: $(top_srcdir)/tools/all_errnos
 	@echo '  GEN      $@'
-	@$(top_srcdir)/tools/all_errnos $(CC) $(CFLAGS)
+	@$(top_srcdir)/tools/all_errnos "$(AWK)" $(CC) $(CFLAGS)
 
 -include errnos.h.deps
 CLEANFILES += errnos.h errnos.h.deps
@@ -338,7 +338,7 @@ misc-utils/enosys.c: syscalls.h errnos.h
 
 syscalls.h: $(top_srcdir)/tools/all_syscalls
 	@echo '  GEN      $@'
-	@$(top_srcdir)/tools/all_syscalls $(CC) $(CFLAGS)
+	@$(top_srcdir)/tools/all_syscalls "$(AWK)" $(CC) $(CFLAGS)
 
 -include syscalls.h.deps
 CLEANFILES += syscalls.h syscalls.h.deps
diff --git a/tools/all_errnos b/tools/all_errnos
index 4b662aa8f3..137713d401 100755
--- a/tools/all_errnos
+++ b/tools/all_errnos
@@ -5,6 +5,8 @@
 set -e
 set -o pipefail
 
+AWK="$1"
+shift
 OUTPUT=errnos.h
 ERRNO_INCLUDES="
 #include <sys/errno.h>
@@ -13,6 +15,6 @@ ERRNO_INCLUDES="
 trap 'rm -f $OUTPUT $OUTPUT.deps' ERR
 
 "$@" -MD -MF "$OUTPUT.deps" <<< "$ERRNO_INCLUDES" -dM -E - \
-	| gawk 'match($0, /^#[ \t]*define[ \t]*E([^ ]+)/, res) { print "UL_ERRNO(\"E" res[1] "\", E" res[1] ")" }' \
+	| "$AWK" 'match($0, /^#[ \t]*define[ \t]*E([^ ]+)/, res) { print "UL_ERRNO(\"E" res[1] "\", E" res[1] ")" }' \
 	| sort \
 	> "$OUTPUT"
diff --git a/tools/all_syscalls b/tools/all_syscalls
index f2f91b3aef..15984e5287 100755
--- a/tools/all_syscalls
+++ b/tools/all_syscalls
@@ -3,6 +3,8 @@
 set -e
 set -o pipefail
 
+AWK="$1"
+shift
 OUTPUT=syscalls.h
 SYSCALL_INCLUDES="
 #include <sys/syscall.h>
@@ -11,6 +13,6 @@ SYSCALL_INCLUDES="
 trap 'rm -f $OUTPUT $OUTPUT.deps' ERR
 
 "$@" -MD -MF "$OUTPUT.deps" <<< "$SYSCALL_INCLUDES" -dM -E - \
-	| gawk 'match($0, /^#define __NR_([^ ]+)/, res) { print "UL_SYSCALL(\"" res[1] "\", __NR_" res[1] ")" }' \
+	| "$AWK" 'match($0, /^#define __NR_([^ ]+)/, res) { print "UL_SYSCALL(\"" res[1] "\", __NR_" res[1] ")" }' \
 	| sort \
 	> "$OUTPUT"