dnl GNOME_SUPPORT_CHECKS
dnl Check for various support functions needed by the standard
dnl Gnome libraries. Sets LIBOBJS, might define some macros,
dnl and will set the need_gnome_support shell variable to "yes"
dnl or "no". Also sets up the Automake BUILD_GNOME_SUPPORT
dnl conditional. This should only be used when building the Gnome
dnl libs; 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])
need_gnome_support=no
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(canonicalize_file_name,,LIBOBJS="$LIBOBJS canonicalize.o")
AC_CHECK_FUNCS(realpath,,LIBOBJS="$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)
if test "$LIBOBJS$gcc_need_declarations" != ""; then
need_gnome_support=yes
fi
# 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)
])
