macros which define macros

[Sam Steingold]

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I use two almost identical macros:

AC_DEFUN([CL_COMPILE_CHECK],
[AC_MSG_CHECKING(for $1)
AC_CACHE_VAL($2,[
AC_TRY_COMPILE([$3],[$4], $2=yes, $2=no)
])
AC_MSG_RESULT([$]$2)
if test [$]$2 = yes; then
~  ifelse([$5], , :, [$5])
ifelse([$6], , , [else
~  $6
])dnl
fi
])

AC_DEFUN([CL_LINK_CHECK],
[AC_MSG_CHECKING(for $1)
AC_CACHE_VAL($2,[
AC_TRY_LINK([$3],[$4], $2=yes, $2=no)
])
AC_MSG_RESULT([$]$2)
if test [$]$2 = yes; then
~  ifelse([$5], , :, [$5])
ifelse([$6], , , [else
~  $6
])dnl
fi
])

and I though that I could replace them with this:

AC_DEFUN([CL_CHECK],[dnl
AC_CACHE_CHECK(for $2,$3,$1(AC_LANG_PROGRAM([$4],[$5]),[$3=yes], [$3=no]))
if test [$]$3 = yes; then
~  ifelse([$6], , :, [$6])
ifelse([$7], , , [else
~  $7
])dnl
fi
])

AC_DEFUN([CL_COMPILE_CHECK],
[CL_CHECK(AC_COMPILE_IFELSE,[$1],[$2],[$3],[$4],[$5],[$6])])
AC_DEFUN([CL_LINK_CHECK],
[CL_CHECK(AC_LINK_IFELSE,[$1],[$2],[$3],[$4],[$5],[$6])])

alas, I get this error:

NONE:0: error: m4_init: unbalanced m4_divert_push:
configure.ac:19: m4_divert_push: BODY

any ideas?

Another question - is there a way to reuse the results of AC_LANG_PROGRAM?
here it is called with the same arguments twice:

AC_CACHE_CHECK([if XauGetAuthByAddr needs -lXau], [cl_cv_need_lXau],
~  [ cl_LIBS_save=$LIBS
~    cl_CFLAGS_save=$CFLAGS
~    LIBS="$X_LIBS $X_PRE_LIBS -lX11 $LIBS"
~    CFLAGS="$CFLAGS $X_CFLAGS"
~    AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <sys/socket.h>
#include <X11/Xlib.h>
#include <X11/Xauth.h>],
[XauGetAuthByAddr(AF_INET,0,"",13,"localhost:0.0",13,"localhost:0.0");])],
~      [cl_cv_need_lXau=no], [cl_cv_need_lXau=maybe])
~    if test $cl_cv_need_lXau = maybe; then
~      LIBS="$X_LIBS -lXau $X_PRE_LIBS $LIBS"
~      CFLAGS="$CFLAGS $X_CFLAGS"
~      AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <sys/socket.h>
#include <X11/Xlib.h>
#include <X11/Xauth.h>],
[XauGetAuthByAddr(AF_INET,0,"",13,"localhost:0.0",13,"localhost:0.0");])],
~        [cl_cv_need_lXau=yes],
~        AC_MSG_FAILURE([XauGetAuthByAddr was not found]))
~    fi
~    LIBS=$cl_LIBS_save
~    CFLAGS=$cl_CFLAGS_save])

thanks

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