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73cc72729a
This patch moves the gdb/gnulib subdirectory to the top level. It adjusts the top-level build system to build gnulib when necessary, and changes gdb to use this. However, gdbserver still builds its own copy of gnulib, just from the new source location. A small hack was needed to ensure that gnulib is only built when gdb is enabled. The Makefile only provides an ordering -- the directory must be mentioned in configdirs to actually be compiled at all. Most of the patch is just a "git mv" of gnulib, though a few minor path adjustments were needed in some files there. Tested by the buildbot. ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * MAINTAINERS: Add gnulib. * gnulib: New directory, move from gdb/gnulib. * configure.ac (host_libs): Add gnulib. * configure: Rebuild. * Makefile.def (host_modules, dependencies): Add gnulib. * Makefile.in: Rebuild. gdb/ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * gnulib: Move directory to top-level. * configure.ac: Don't configure gnulib. * configure: Rebuild. * common/common-defs.h: Use new path to gnulib. * Makefile.in (GNULIB_BUILDDIR): Now ../gnulib. (GNULIB_H): Remove. (INCGNU): Look in new gnulib location. (HFILES_NO_SRCDIR): Remove gnulib files. (SUBDIR, REQUIRED_SUBDIRS): Remove gnulib. (generated_files): Remove GNULIB_H. ($(LIBGNU), all-lib): Remove targets. (distclean): Don't mention GNULIB_BUILDDIR. ($(GNULIB_BUILDDIR)/Makefile): Remove target. gdb/gdbserver/ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * configure.ac: Use new path to gnulib. * configure: Rebuild. * Makefile.in (INCGNU, $(GNULIB_BUILDDIR)/Makefile): Use new path to gnulib. gnulib/ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * update-gnulib.sh: Adjust paths. * Makefile.in: Adjust paths. * configure.ac: Adjust paths. Use ACX_LARGEFILE. * configure: Rebuild.
72 lines
2.4 KiB
Plaintext
72 lines
2.4 KiB
Plaintext
# readlink.m4 serial 12
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dnl Copyright (C) 2003, 2007, 2009-2016 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_FUNC_READLINK],
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[
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AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_CHECK_FUNCS_ONCE([readlink])
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if test $ac_cv_func_readlink = no; then
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HAVE_READLINK=0
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else
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AC_CACHE_CHECK([whether readlink signature is correct],
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[gl_cv_decl_readlink_works],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <unistd.h>
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/* Cause compilation failure if original declaration has wrong type. */
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ssize_t readlink (const char *, char *, size_t);]])],
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[gl_cv_decl_readlink_works=yes], [gl_cv_decl_readlink_works=no])])
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dnl Solaris 9 ignores trailing slash.
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dnl FreeBSD 7.2 dereferences only one level of links with trailing slash.
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AC_CACHE_CHECK([whether readlink handles trailing slash correctly],
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[gl_cv_func_readlink_works],
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[# We have readlink, so assume ln -s works.
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ln -s conftest.no-such conftest.link
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ln -s conftest.link conftest.lnk2
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <unistd.h>
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]], [[char buf[20];
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return readlink ("conftest.lnk2/", buf, sizeof buf) != -1;]])],
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[gl_cv_func_readlink_works=yes], [gl_cv_func_readlink_works=no],
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[case "$host_os" in
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# Guess yes on glibc systems.
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*-gnu*) gl_cv_func_readlink_works="guessing yes" ;;
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# If we don't know, assume the worst.
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*) gl_cv_func_readlink_works="guessing no" ;;
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esac
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])
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rm -f conftest.link conftest.lnk2])
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case "$gl_cv_func_readlink_works" in
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*yes)
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if test "$gl_cv_decl_readlink_works" != yes; then
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REPLACE_READLINK=1
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fi
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;;
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*)
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AC_DEFINE([READLINK_TRAILING_SLASH_BUG], [1], [Define to 1 if readlink
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fails to recognize a trailing slash.])
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REPLACE_READLINK=1
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;;
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esac
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fi
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])
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# Like gl_FUNC_READLINK, except prepare for separate compilation
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# (no REPLACE_READLINK, no AC_LIBOBJ).
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AC_DEFUN([gl_FUNC_READLINK_SEPARATE],
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[
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AC_CHECK_FUNCS_ONCE([readlink])
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gl_PREREQ_READLINK
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])
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# Prerequisites of lib/readlink.c.
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AC_DEFUN([gl_PREREQ_READLINK],
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[
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:
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])
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