[PATCH 04/22] build: prefer '$(top_srcdir)/doc' over '$(srcdir)' in doc Makefile

[Stefano Lattarini]

This is just a preparatory refactoring that will become useful in
a future change (where the doc/Makefile.am makefile will be merged
with the top-level one).

* doc/Makefile.am (doc_srcdir): New, defined to '$(top_srcdir)/doc'.
Use it throughout instead of "bare" '$(srcdir)'.

Signed-off-by: Stefano Lattarini <address@hidden>
---
 doc/Makefile.am | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/doc/Makefile.am b/doc/Makefile.am
index 9a50714..4e5150f 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -19,6 +19,8 @@ info_TEXINFOS = coreutils.texi
 
 coreutils_TEXINFOS = perm.texi parse-datetime.texi constants.texi fdl.texi
 
+doc_srcdir = $(top_srcdir)/doc
+
 # The following is necessary if the package name is 8 characters or longer.
 # If the info documentation would be split into 10 or more separate files,
 # then this is necessary even if the package name is 7 characters long.
@@ -60,21 +62,21 @@ syntax_checks =             \
 # List words/regexps here that should not appear in the texinfo documentation.
 check-texinfo: $(syntax_checks)
        $(AM_V_GEN)fail=0;                                              \
-       grep '@url{' $(srcdir)/*.texi && fail=1;                        \
-       grep '\$$@"' $(srcdir)/*.texi && fail=1;                        \
-       grep -n '[^[:punct:]]@footnote' $(srcdir)/*.texi && fail=1;     \
-       grep -n filename $(srcdir)/*.texi                               \
+       grep '@url{' $(doc_srcdir)/*.texi && fail=1;                    \
+       grep '\$$@"' $(doc_srcdir)/*.texi && fail=1;                    \
+       grep -n '[^[:punct:]]@footnote' $(doc_srcdir)/*.texi && fail=1; \
+       grep -n filename $(doc_srcdir)/*.texi                           \
            | $(EGREP) -v 'setfilename|[{]filename[}]'                  \
          && fail=1;                                                    \
        exit $$fail
 
 sc-avoid-builtin:
-       $(AM_V_GEN)$(EGREP) -i '$(_W)builtins?$(W_)' $(srcdir)/*.texi   \
+       $(AM_V_GEN)$(EGREP) -i '$(_W)builtins?$(W_)' $(doc_srcdir)/*.texi \
          && exit 1 || :
 
 sc-avoid-path:
        $(AM_V_GEN)fail=0;                                              \
-       $(EGREP) -i '$(_W)path(name)?s?$(W_)' $(srcdir)/*.texi          \
+       $(EGREP) -i '$(_W)path(name)?s?$(W_)' $(doc_srcdir)/*.texi      \
          | $(EGREP) -v                                                 \
          'PATH=|path search|search path|@vindex PATH$$|@env[{]PATH[}]' \
          && fail=1;                                                    \
@@ -82,28 +84,28 @@ sc-avoid-path:
 
 # Use "time zone", not "timezone".
 sc-avoid-timezone:
-       $(AM_V_GEN)$(EGREP) timezone $(srcdir)/*.texi && exit 1 || :
+       $(AM_V_GEN)$(EGREP) timezone $(doc_srcdir)/*.texi && exit 1 || :
 
 # Check for insufficient exponent grouping, e.g.,
 # @math{2^64} should be @math{2^{64}}.
 sc-exponent-grouping:
-       $(AM_V_GEN)$(EGREP) '\{.*\^[0-9][0-9]' $(srcdir)/*.texi && exit 1 || :
+       $(AM_V_GEN)$(EGREP) '\{.*\^[0-9][0-9]' $(doc_srcdir)/*.texi && exit 1 
|| :
 
 # E.g., use @sc{nul}, not NUL.
 sc-use-small-caps-NUL:
-       $(AM_V_GEN)$(EGREP) '$(_W)NUL$(W_)' $(srcdir)/*.texi && exit 1 || :
+       $(AM_V_GEN)$(EGREP) '$(_W)NUL$(W_)' $(doc_srcdir)/*.texi && exit 1 || :
 
 # Say I/O, not IO.
 sc-avoid-io:
-       $(AM_V_GEN)$(EGREP) '$(_W)IO$(W_)' $(srcdir)/*.texi && exit 1 || :
+       $(AM_V_GEN)$(EGREP) '$(_W)IO$(W_)' $(doc_srcdir)/*.texi && exit 1 || :
 
 # I prefer nonzero over non-zero.
 sc-avoid-non-zero:
-       $(AM_V_GEN)$(EGREP) non-zero $(srcdir)/*.texi && exit 1 || :
+       $(AM_V_GEN)$(EGREP) non-zero $(doc_srcdir)/*.texi && exit 1 || :
 
 # Use "zeros", not "zeroes" (nothing wrong with "zeroes"; just be consistent).
 sc-avoid-zeroes:
-       $(AM_V_GEN)$(EGREP) -i '$(_W)zeroes$(W_)' $(srcdir)/*.texi \
+       $(AM_V_GEN)$(EGREP) -i '$(_W)zeroes$(W_)' $(doc_srcdir)/*.texi \
          && exit 1 || :
 
 # ME = $(subdir)/$(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
@@ -122,6 +124,6 @@ find_upper_case_var =               \
    END {$$m and (warn "$(ME): do not use upper case in \@var{...}\n"), exit 1}'
 sc-lower-case-var:
        $(AM_V_GEN)$(PERL) -e 1 || { echo $@: skipping test; exit 0; }; \
-         $(PERL) -lne $(find_upper_case_var) $(srcdir)/*.texi
+         $(PERL) -lne $(find_upper_case_var) $(doc_srcdir)/*.texi
 
 check: check-texinfo
-- 
1.7.12