freopen: Don't crash if the filename argument is NULL.

[gnulib.git] / Makefile

diff --git a/Makefile b/Makefile
index c3bf4a9..cb1d7cd 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,16 @@
-# Makefile for gnulib central.
+# GNU Makefile for gnulib central.
 # Copyright (C) 2006, 2009-2011 Free Software Foundation, Inc.
 #
 # Copying and distribution of this file, with or without modification,
 # in any medium, are permitted without royalty provided the copyright
 # notice and this notice are preserved.
 
+# This Makefile requires the use of GNU make.  Some targets require
+# that you have tools like git, makeinfo and cppi installed.
+
+# Required for the use of <(...) below.
+SHELL=/bin/bash
+
 # Produce some files that are not stored in the repository.
 all:
 
@@ -12,11 +18,12 @@ all:
 info html dvi pdf:
        cd doc && $(MAKE) $@ && $(MAKE) mostlyclean
 
+# Collect the names of rules starting with `sc_'.
+syntax-check-rules := $(sort $(shell sed -n 's/^\(sc_[a-zA-Z0-9_-]*\):.*/\1/p'\
+                       Makefile))
+
 # Perform some platform independent checks on the gnulib code.
-check: \
-  sc_prohibit_augmenting_PATH_via_TESTS_ENVIRONMENT                    \
-  sc_pragma_columns                                                    \
-  sc_prefer_ac_check_funcs_once
+check: $(syntax-check-rules)
 
 sc_prefer_ac_check_funcs_once:
        if test -d .git; then                                           \
@@ -25,6 +32,15 @@ sc_prefer_ac_check_funcs_once:
                   in modules/ 1>&2; exit 1; } || :                     \
        else :; fi
 
+sc_prohibit_leading_TABs:
+       if test -d .git; then                                           \
+         git grep -l '^ *      ' lib m4 tests                          \
+            | grep -Ev '^lib/reg|Makefile|test-update-copyright'       \
+            | grep .                                                   \
+           && { printf '*** %s\n' 'indent with spaces, not TABs;'      \
+                1>&2; exit 1; } || :                                   \
+       else :; fi
+
 sc_prohibit_augmenting_PATH_via_TESTS_ENVIRONMENT:
        if test -d .git; then                                           \
          url=http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/22874; \
@@ -33,6 +49,42 @@ sc_prohibit_augmenting_PATH_via_TESTS_ENVIRONMENT:
                 "  see <$$url>" 1>&2; exit 1; } || :                   \
        else :; fi
 
+# Files in m4/ that (exceptionally) may use AC_LIBOBJ.
+# Do not include their ".m4" suffix.
+allow_AC_LIBOBJ =      \
+  close                        \
+  dprintf              \
+  dup2                 \
+  faccessat            \
+  fchdir               \
+  fclose               \
+  fcntl                        \
+  fprintf-posix                \
+  open                 \
+  printf-posix-rpl     \
+  snprintf             \
+  sprintf-posix                \
+  stdio_h              \
+  vasnprintf           \
+  vasprintf            \
+  vdprintf             \
+  vfprintf-posix       \
+  vprintf-posix                \
+  vsnprintf            \
+  vsprintf-posix
+
+allow_AC_LIBOBJ_or := $(shell echo $(allow_AC_LIBOBJ) | tr -s ' ' '|')
+
+sc_prohibit_AC_LIBOBJ_in_m4:
+       url=http://article.gmane.org/gmane.comp.lib.gnulib.bugs/26995;  \
+       if test -d .git; then                                           \
+         git ls-files m4                                               \
+            | grep -Ev '^m4/($(allow_AC_LIBOBJ_or))\.m4$$'             \
+            | xargs grep '^ *AC_LIBOBJ('                               \
+           && { printf '%s\n' 'Do not use AC_LIBOBJ in m4/*.m4;'       \
+                "see <$$url>"; exit 1; } || :;                         \
+       else :; fi
+
 sc_pragma_columns:
        if test -d .git; then                                           \
          git ls-files|grep '\.in\.h$$'                                 \
@@ -45,6 +97,26 @@ sc_pragma_columns:
                 exit 1; } || :;                                        \
        else :; fi
 
+# Verify that certain (for now, only Jim Meyering and Eric Blake's)
+# *.c files are consistently cpp indented.
+sc_cpp_indent_check:
+       ./gnulib-tool --extract-filelist \
+            $$(cd ./modules; grep -ilrE '(meyering|blake)' .) \
+          | sort -u \
+          | grep '\.c$$' \
+          | grep -vE '/(stdio-(read|write)|getloadavg)\.c$$' \
+          | xargs cppi -c
+
+# Ensure that the list of symbols checked for by the
+# sc_prohibit_intprops_without_use rule match those in the actual file.
+# Extract the symbols from the .h file and compare with the list of
+# symbols extracted from the rule in maint.mk.
+sc_check_sym_list:
+       i=lib/intprops.h; \
+       diff -u <(perl -lne '/^# *define ([A-Z]\w+)\(/ and print $$1' $$i|fmt) \
+         <(sed -n /^_intprops_name/,/^_intprops_syms_re/p top/maint.mk \
+            |sed '/^_/d;s/^  //;s/     *\\$$//')
+
 # Regenerate some files that are stored in the repository.
 regen: MODULES.html