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# 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

])