2 |
dnl In the situation that cross-linking is impossible, the variable |
dnl In the situation that cross-linking is impossible, the variable |
3 |
dnl `cross_linkable' will be substituted with "yes". |
dnl `cross_linkable' will be substituted with "yes". |
4 |
|
|
5 |
dnl |
AC_DEFUN([hurd_SYSTYPE], |
|
AC_DEFUN(AC_PROG_CC_LOCAL, |
|
|
[AC_BEFORE([$0], [AC_PROG_CPP])dnl |
|
|
AC_CHECK_PROG(CC, gcc, gcc) |
|
|
if test -z "$CC"; then |
|
|
AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) |
|
|
test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) |
|
|
fi |
|
|
|
|
|
AC_PROG_CC_WORKS_LOCAL |
|
|
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="$CFLAGS" |
|
|
CFLAGS= |
|
|
dnl AC_PROG_CC_G |
|
|
if test "$ac_test_CFLAGS" = set; then |
|
|
CFLAGS="$ac_save_CFLAGS" |
|
|
dnl # This doesn't work on Linux (libc-4.5.26): Because of differences between |
|
|
dnl # the shared and the static libraries there are less symbols available |
|
|
dnl # without -g than with -g. It is therefore better to run the configuration |
|
|
dnl # without -g and to add -g afterwards than the contrary. So don't add |
|
|
dnl # -g to the CFLAGS now. |
|
|
dnl elif test $ac_cv_prog_cc_g = yes; then |
|
|
dnl CFLAGS="-g -O" |
|
|
else |
|
|
dnl CFLAGS="-O" |
|
|
# Add "-O" to both the CC and CPP commands, to eliminate possible confusion |
|
|
# that results from __OPTIMIZE__ being defined for CC but not CPP. |
|
|
changequote(, )dnl |
|
|
if echo "$CC " | grep ' -O[1-9 ]' > /dev/null 2>&1; then |
|
|
changequote([, ])dnl |
|
|
: # already optimizing |
|
|
else |
|
|
CC="$CC -O" |
|
|
ac_cv_prog_CC="$CC" |
|
|
fi |
|
|
fi |
|
|
else |
|
|
GCC= |
|
|
dnl # See above. |
|
|
dnl test "${CFLAGS+set}" = set || CFLAGS="-g" |
|
|
fi |
|
|
]) |
|
|
|
|
|
AC_DEFUN(AC_PROG_CC_WORKS_LOCAL, |
|
|
[AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) works]) |
|
|
AC_LANG_SAVE |
|
|
AC_LANG_C |
|
|
AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cc_works, ac_cv_prog_cc_cross) |
|
|
AC_LANG_RESTORE |
|
|
AC_MSG_RESULT($ac_cv_prog_cc_works) |
|
|
if test $ac_cv_prog_cc_works = no; then |
|
|
cross_linkable=no |
|
|
ac_cv_prog_cc_cross=yes |
|
|
# AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.]) |
|
|
else |
|
|
cross_linkable=yes |
|
|
fi |
|
|
AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler]) |
|
|
AC_MSG_RESULT($ac_cv_prog_cc_cross) |
|
|
AC_SUBST(cross_linkable) |
|
|
cross_compiling=$ac_cv_prog_cc_cross |
|
|
]) |
|
|
|
|
|
AC_DEFUN(hurd_SYSTYPE, |
|
6 |
[AC_REQUIRE([AC_CANONICAL_HOST])dnl |
[AC_REQUIRE([AC_CANONICAL_HOST])dnl |
7 |
case "$host_cpu" in |
case "$host_cpu" in |
8 |
i[[3456]]86) systype=i386 ;; |
i[[3456]]86) systype=i386 ;; |
9 |
*) systype="$host_cpu" ;; |
*) systype="$host_cpu" ;; |
10 |
esac |
esac |
11 |
AC_SUBST(systype)]) |
AC_SUBST([systype])]) |