[PATCH] libgloss: switch to standard AC_PROG_CC

Now that we use AC_NO_EXECUTABLES, and we require a recent version of
autoconf, we don't need to define our own copies of these macros.  So
switch to the standard AC_PROG_CC.
---
 libgloss/aarch64/aclocal.m4   |  368 ------------
 libgloss/aarch64/configure    | 1029 ++++++++++++++++++++++-----------
 libgloss/aarch64/configure.ac |    3 +-
 libgloss/acinclude.m4         |   55 --
 libgloss/arm/aclocal.m4       |  368 ------------
 libgloss/arm/configure        | 1029 ++++++++++++++++++++++-----------
 libgloss/arm/configure.ac     |    3 +-
 libgloss/configure            |  801 ++++++++-----------------
 libgloss/configure.ac         |    2 +-
 9 files changed, 1605 insertions(+), 2053 deletions(-)

diff --git a/libgloss/aarch64/configure.ac b/libgloss/aarch64/configure.ac
index 1ed0a767bc75..1e8fce7cca03 100644
--- a/libgloss/aarch64/configure.ac
+++ b/libgloss/aarch64/configure.ac
@@ -8,7 +8,8 @@ AC_ARG_PROGRAM
 
 AC_PROG_INSTALL
 
-LIB_AC_PROG_CC
+AC_NO_EXECUTABLES
+AC_PROG_CC
 AS=${AS-as}
 AC_SUBST(AS)
 AR=${AR-ar}
diff --git a/libgloss/acinclude.m4 b/libgloss/acinclude.m4
index cdd34b6f0304..d792f66b1e30 100644
--- a/libgloss/acinclude.m4
+++ b/libgloss/acinclude.m4
@@ -1,62 +1,7 @@
-# FIXME: We temporarily define our own version of AC_PROG_CC.  This is
-# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS.  We
-# are probably using a cross compiler, which will not be able to fully
-# link an executable.  This should really be fixed in autoconf
-# itself.
-
-AC_DEFUN([LIB_AC_PROG_CC_GNU],
-[AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc,
-[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
-cat > conftest.c <<EOF
-#ifdef __GNUC__
-  yes;
-#endif
-EOF
-if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
-  ac_cv_prog_gcc=yes
-else
-  ac_cv_prog_gcc=no
-fi])])
-
 AC_DEFUN([LIB_AM_PROG_AS],
 [# By default we simply use the C compiler to build assembly code.
-AC_REQUIRE([LIB_AC_PROG_CC])
 test "${CCAS+set}" = set || CCAS=$CC
 test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
 AC_ARG_VAR([CCAS],      [assembler compiler command (defaults to CC)])
 AC_ARG_VAR([CCASFLAGS], [assembler compiler flags (defaults to CFLAGS)])
 ])
-
-AC_DEFUN([LIB_AC_PROG_CC],
-[AC_BEFORE([$0], [AC_PROG_CPP])dnl
-AC_CHECK_PROG(CC, gcc, gcc)
-_AM_DEPENDENCIES(CC)
-if test -z "$CC"; then
-  AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
-  test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
-fi
-
-LIB_AC_PROG_CC_GNU
-
-if test $ac_cv_prog_gcc = yes; then
-  GCC=yes
-dnl Check whether -g works, even if CFLAGS is set, in case the package
-dnl plays around with CFLAGS (such as to build both debugging and
-dnl normal versions of a library), tasteless as that idea is.
-  ac_test_CFLAGS="${CFLAGS+set}"
-  ac_save_CFLAGS="$CFLAGS"
-  CFLAGS=
-  _AC_PROG_CC_G
-  if test "$ac_test_CFLAGS" = set; then
-    CFLAGS="$ac_save_CFLAGS"
-  elif test $ac_cv_prog_cc_g = yes; then
-    CFLAGS="-g -O2"
-  else
-    CFLAGS="-O2"
-  fi
-else
-  GCC=
-  test "${CFLAGS+set}" = set || CFLAGS="-g"
-fi
-])
-
diff --git a/libgloss/arm/configure.ac b/libgloss/arm/configure.ac
index 3d7ba7da15d6..5c6fb8920ce5 100644
--- a/libgloss/arm/configure.ac
+++ b/libgloss/arm/configure.ac
@@ -28,7 +28,8 @@ AC_ARG_PROGRAM
 
 AC_PROG_INSTALL
 
-LIB_AC_PROG_CC
+AC_NO_EXECUTABLES
+AC_PROG_CC
 AS=${AS-as}
 AC_SUBST(AS)
 AR=${AR-ar}
diff --git a/libgloss/configure.ac b/libgloss/configure.ac
index 4aa0f19140fe..895ca4289115 100644
--- a/libgloss/configure.ac
+++ b/libgloss/configure.ac
@@ -248,7 +248,7 @@ dnl fi
 
 AM_CONDITIONAL(CONFIG_LIBNOSYS, test x$config_libnosys = xtrue)
 
-LIB_AC_PROG_CC
+AC_PROG_CC
 AS=${AS-as}
 AC_SUBST(AS)
 AC_CHECK_PROG(AR, ar, ar, :)
-- 
2.34.1