maint.mk: gnulib doesn't guarantee NSIG

Gnulib conditionally defines NSIG to 32 for some platforms.  But since
NSIG is not mandated by standards, and there are platforms with 64
signals, we should not promise that NSIG is guaranteed.

* top/maint.mk (gl_extract_significant_defines_): Exclude NSIG.

Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/ChangeLog b/ChangeLog
index 9ddf925..9af2059 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-05-11  Eric Blake  <eblake@redhat.com>
+
+       maint.mk: gnulib doesn't guarantee NSIG
+       * top/maint.mk (gl_extract_significant_defines_): Exclude NSIG.
+
 2010-05-10  Peter O'Gorman  <pogma@thewrittenword.com>
 
        test-pwrite.c: Remove unused variable declaration.

diff --git a/top/maint.mk b/top/maint.mk
index 867e4be..54fcbe9 100644 (file)
--- a/top/maint.mk
+++ b/top/maint.mk
@@ -674,7 +674,9 @@ gl_other_headers_ ?= \
 # Perl -lne code to extract "significant" cpp-defined symbols from a
 # gnulib header file, eliminating a few common false-positives.
 gl_extract_significant_defines_ = \
-  /^\# *define ([^_ (][^ (]*)(\s*\(|\s+\w+)/ && $$2 !~ /(?:rpl_|_used_without_)/\
+  /^\# *define ([^_ (][^ (]*)(\s*\(|\s+\w+)/\
+    && $$2 !~ /(?:rpl_|_used_without_)/\
+    && $$1 !~ /^(NSIG|ATTRIBUTE_NORETURN)/\
     and print $$1
 
 # Create a list of regular expressions matching the names
@@ -686,7 +688,6 @@ define def_sym_regex
            perl -lne '$(gl_extract_significant_defines_)' $$f;         \
          done;                                                         \
        ) | sort -u                                                     \
-         | grep -Ev '^ATTRIBUTE_NORETURN'                              \
          | sed 's/^/^ *# *define /;s/$$/\\>/'
 endef