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dnl GNOME_SUPPORT_CHECKS
dnl Check for various support functions needed by the standard
dnl Gnome libraries. Sets LIBOBJS, might define some macros.
dnl This should only be used when building the Gnome libs;
dnl Gnome clients should not need this macro.
AC_DEFUN([GNOME_SUPPORT_CHECKS],[
# we need an `awk' to build `gnomesupport.h'
AC_REQUIRE([AC_PROG_AWK])
# this should go away soon
need_gnome_support=yes
save_LIBOBJS="$LIBOBJS"
LIBOBJS=
AC_CHECK_FUNCS(getopt_long,,LIBOBJS="$LIBOBJS getopt.o getopt1.o")
# We check for argp_domain because we use it, and it appears only in
# very recent versions of the argp library.
AC_CACHE_CHECK([for working argp code], gnome_cv_argp, [
AC_TRY_COMPILE([#include <argp.h>], [
struct argp foo;
extern char *foo2;
foo.argp_domain = foo2;],
gnome_cv_argp=yes,
gnome_cv_argp=no)
# It is possible to have the argp headers installed but not have
# the code in the C library. At least, there have been reports of
# this happening. So we check for this case explicitly.
if test "$gnome_cv_argp" = yes; then
AC_CHECK_FUNC(argp_parse,,gnome_cv_argp=no)
fi])
if test "$gnome_cv_argp" = no; then
LIBOBJS="$LIBOBJS argp-ba.o argp-eexst.o argp-fmtstream.o argp-fs-xinl.o argp-help.o argp-parse.o argp-pv.o argp-pvh.o argp-xinl.o"
fi
# This header enables some optimizations inside argp.
AC_CHECK_HEADERS(linewrap.h)
# for `scandir'
AC_HEADER_DIRENT
# copied from `configure.in' of `libiberty'
vars="program_invocation_short_name program_invocation_name sys_errlist"
for v in $vars; do
AC_MSG_CHECKING([for $v])
AC_CACHE_VAL(gnome_cv_var_$v,
[AC_TRY_LINK([int *p;], [extern int $v; p = &$v;],
[eval "gnome_cv_var_$v=yes"],
[eval "gnome_cv_var_$v=no"])])
if eval "test \"`echo '$gnome_cv_var_'$v`\" = yes"; then
AC_MSG_RESULT(yes)
n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
AC_DEFINE_UNQUOTED($n)
else
AC_MSG_RESULT(no)
fi
done
AC_CHECK_FUNCS(vsnprintf,,[
AC_CHECK_FUNCS(__vsnprintf,
LIBOBJS="$LIBOBJS easy-vsnprintf.o",
LIBOBJS="$LIBOBJS vsnprintf.o")])
AC_REPLACE_FUNCS(memmove mkstemp scandir strcasecmp strerror strndup strnlen)
AC_REPLACE_FUNCS(strtok_r strtod strtol strtoul vasprintf)
AC_CHECK_FUNCS(realpath,,LIBOBJS="$LIBOBJS canonicalize.o")
# to include `error.c' error.c has some HAVE_* checks
AC_CHECK_FUNCS(vprintf doprnt sterror_r)
AM_FUNC_ERROR_AT_LINE
# This is required if we declare setreuid () and setregid ().
AC_TYPE_UID_T
# see if we need to declare some functions. Solaris is notorious for
# putting functions into the `libc' but not listing them in the headers
AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h)
GCC_NEED_DECLARATIONS(gethostname setreuid setregid getpagesize)
# Turn our LIBOBJS into libtool objects. This is gross, but it
# requires changes to autoconf before it goes away.
LTLIBOBJS=`echo "$LIBOBJS" | sed 's/\.o/.lo/g'`
AC_SUBST(need_gnome_support)
AC_SUBST(LTLIBOBJS)
LIBOBJS="$save_LIBOBJS"
AM_CONDITIONAL(BUILD_GNOME_SUPPORT, test "$need_gnome_support" = yes)
])
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