# -*- autoconf -*-
# Process this file with autoconf to produce a configure script.
-# Copyright (C) 1991, 1993-2011 Free Software Foundation, Inc.
+# Copyright (C) 1991-2012 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_HEADERS([lib/config.h:lib/config.hin])
-AM_INIT_AUTOMAKE([1.11.1 dist-xz color-tests parallel-tests])
+AM_INIT_AUTOMAKE([1.11.1 no-dist-gzip dist-xz color-tests parallel-tests])
AM_SILENT_RULES([yes]) # make --enable-silent-rules the default.
+dnl POSIXCHECK is worthwhile for maintainers, but adds several seconds
+dnl (more than 10% execution time) to ./configure, with no benefit for
+dnl most users. Using it to look for bugs requires:
+dnl GNULIB_POSIXCHECK=1 autoreconf -f
+dnl ./configure
+dnl make
+dnl make -C src clean
+dnl make CFLAGS=-DGNULIB_POSIXCHECK=1
+dnl FIXME: Once we figure out how to avoid false positives, we should
+dnl have 'make my-distcheck' in dist-check.mk exercise this.
+m4_syscmd([test "${GNULIB_POSIXCHECK+set}" = set])
+m4_if(m4_sysval, [0], [], [dnl
+gl_ASSERT_NO_GNULIB_POSIXCHECK])
+
AC_PROG_CC_STDC
AM_PROG_CC_C_O
AC_PROG_CPP
[gl_gcc_warnings=no]
)
+# gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
+# ------------------------------------------------
+# If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
+# Otherwise, run RUN-IF-NOT-FOUND.
+AC_DEFUN([gl_GCC_VERSION_IFELSE],
+ [AC_PREPROC_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
+/* ok */
+#else
+# error "your version of gcc is older than $1.$2"
+#endif
+ ]]),
+ ], [$3], [$4])
+ ]
+)
+
if test "$gl_gcc_warnings" = yes; then
gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
AC_SUBST([WERROR_CFLAGS])
done
gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
+ gl_WARN_ADD([-Wsuggest-attribute=const])
+ gl_WARN_ADD([-Wsuggest-attribute=noreturn])
+ gl_WARN_ADD([-Wno-format-nonliteral])
+
+ # Enable this warning only with gcc-4.7 and newer. With 4.6.2 20111027,
+ # it suggests test.c's advance function may be pure, even though it
+ # increments a global variable. Oops.
+ # Normally we'd write code to test for the precise failure, but that
+ # requires a relatively large input to make gcc exhibit the failure.
+ gl_GCC_VERSION_IFELSE([4], [7], [gl_WARN_ADD([-Wsuggest-attribute=pure])])
# In spite of excluding -Wlogical-op above, it is enabled, as of
# gcc 4.5.0 20090517, and it provokes warnings in cat.c, dd.c, truncate.c
nw="$nw -Wunused-macros"
nw="$nw -Wmissing-prototypes"
nw="$nw -Wold-style-definition"
+ # FIXME: it may be easy to remove this, since it affects only one file:
+ # the snprintf call at ftoastr.c:132.
+ nw="$nw -Wdouble-promotion"
gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
AC_SUBST([GNULIB_WARN_CFLAGS])
# For gnulib-tests, the set is slightly smaller still.
nw=
nw="$nw -Wstrict-prototypes"
+ # It's not worth being this picky about test programs.
+ nw="$nw -Wsuggest-attribute=const"
+ nw="$nw -Wsuggest-attribute=pure"
gl_MANYWARN_COMPLEMENT([GNULIB_TEST_WARN_CFLAGS],
[$GNULIB_WARN_CFLAGS], [$nw])
AC_SUBST([GNULIB_TEST_WARN_CFLAGS])
# As long as "grep 'PRI[diouxX]' po/*.pot" reports matches in
# translatable strings, we must use need-formatstring-macros here.
AM_GNU_GETTEXT([external], [need-formatstring-macros])
-AM_GNU_GETTEXT_VERSION([0.17])
+AM_GNU_GETTEXT_VERSION([0.18.1])
# For a test of uniq: it uses the $LOCALE_FR envvar.
gt_LOCALE_FR