autoupdate: replace obsolete macros AC_AIX, AC_MINIX, and AC_GNU_SOURCE

- AC_AIX, AC_MINIX, and AC_GNU_SOURCE by AC_USE_SYSTEM_EXTENSIONS
  https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.72/autoconf.html#index-AC_005fAIX
  https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.72/autoconf.html#index-AC_005fMINIX-1
  https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.72/autoconf.html#index-AC_005fGNU_005fSOURCE-1

9 files changed, 2 insertions, 11 deletions

diff --git a/bfd/configure.ac b/bfd/configure.ac
index 29ede92..3b65d8f 100644
--- a/bfd/configure.ac
+++ b/bfd/configure.ac
@@ -36,7 +36,6 @@ dnl configure option --enable-shared.
 AC_DISABLE_SHARED
 
 AC_PROG_CC
-AC_GNU_SOURCE
 AC_USE_SYSTEM_EXTENSIONS
 
 LT_INIT([dlopen])
diff --git a/binutils/configure.ac b/binutils/configure.ac
index 19c5d7d..0373a42 100644
--- a/binutils/configure.ac
+++ b/binutils/configure.ac
@@ -28,7 +28,6 @@ AM_INIT_AUTOMAKE
 AM_SILENT_RULES([yes])
 
 AC_PROG_CC
-AC_GNU_SOURCE
 AC_USE_SYSTEM_EXTENSIONS
 
 AC_C_BIGENDIAN
diff --git a/gas/configure.ac b/gas/configure.ac
index 7403ec7..5036350 100644
--- a/gas/configure.ac
+++ b/gas/configure.ac
@@ -34,7 +34,6 @@ AM_INIT_AUTOMAKE
 AM_SILENT_RULES([yes])
 
 AC_PROG_CC
-AC_GNU_SOURCE
 AC_USE_SYSTEM_EXTENSIONS
 
 LT_INIT
diff --git a/gold/configure.ac b/gold/configure.ac
index 2c7a969..0e622c7 100644
--- a/gold/configure.ac
+++ b/gold/configure.ac
@@ -313,8 +313,6 @@ AC_PROG_RANLIB
 AC_PROG_INSTALL
 AC_PROG_LN_S
 
-AC_GNU_SOURCE
-
 ZW_GNU_GETTEXT_SISTER_DIR
 AM_PO_SUBDIRS
 
diff --git a/gprof/configure.ac b/gprof/configure.ac
index 3202303..b263568 100644
--- a/gprof/configure.ac
+++ b/gprof/configure.ac
@@ -32,7 +32,6 @@ dnl config.h, to avoid any possible confusion with the bfd config.h.
 AC_CONFIG_HEADERS([gconfig.h:gconfig.in])
 
 AC_PROG_CC
-AC_GNU_SOURCE
 AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_INSTALL
 
diff --git a/ld/configure.ac b/ld/configure.ac
index 84f4044..cce0943 100644
--- a/ld/configure.ac
+++ b/ld/configure.ac
@@ -31,7 +31,6 @@ AM_MAINTAINER_MODE
 AC_PROG_CC
 AC_PROG_CXX
 AC_PROG_GREP
-AC_GNU_SOURCE
 AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_INSTALL
 PKG_PROG_PKG_CONFIG
diff --git a/libiberty/configure.ac b/libiberty/configure.ac
index 0888e63..4f76b62 100644
--- a/libiberty/configure.ac
+++ b/libiberty/configure.ac
@@ -172,7 +172,7 @@ AC_MSG_NOTICE([target_header_dir = $target_header_dir])
 
 GCC_NO_EXECUTABLES
 AC_PROG_CC
-AC_GNU_SOURCE
+AC_USE_SYSTEM_EXTENSIONS
 AC_SYS_LARGEFILE
 AC_PROG_CPP_WERROR
 
diff --git a/opcodes/configure.ac b/opcodes/configure.ac
index d812ff5..31ab922 100644
--- a/opcodes/configure.ac
+++ b/opcodes/configure.ac
@@ -27,7 +27,6 @@ AM_INIT_AUTOMAKE
 AM_SILENT_RULES([yes])
 
 AC_PROG_CC
-AC_GNU_SOURCE
 AC_USE_SYSTEM_EXTENSIONS
 
 dnl These must be called before LT_INIT, because it may want
diff --git a/readline/readline/configure.ac b/readline/readline/configure.ac
index c800f1c..9ea2a6b 100644
--- a/readline/readline/configure.ac
+++ b/readline/readline/configure.ac
@@ -115,8 +115,7 @@ test -z "$CFLAGS" && want_auto_cflags=1
 
 AC_PROG_MAKE_SET
 AC_PROG_CC
-dnl AC_AIX
-AC_MINIX
+AC_USE_SYSTEM_EXTENSIONS
 
 # If we're using gcc and the user hasn't specified CFLAGS, add -O2 to CFLAGS
 if test -n "$want_auto_cflags" ; then