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[pspp-builds.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index e3ddb129b1464f0119500566fbe61d8e8bbdb6c3..5f358087509badc11851f87b11d204e2853631cc 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -3,9 +3,85 @@ dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 

+dnl Prerequisites.
+
+dnl Instead of giving an error about each prerequisite as we encounter it, 
+dnl group them all together at the end of the run, to be user-friendly.
+AC_DEFUN([PSPP_REQUIRED_PREREQ], [pspp_required_prereqs="$pspp_required_prereqs
+       $1"])
+AC_DEFUN([PSPP_OPTIONAL_PREREQ], [pspp_optional_prereqs="$pspp_optional_prereqs
+       $1"])
+AC_DEFUN([PSPP_CHECK_PREREQS], 
+[
+  if test "$pspp_optional_prereqs" != ""; then
+    AC_MSG_WARN([The following optional prerequisites are not installed.
+You may wish to install them to obtain additional functionality:$pspp_optional_prereqs])
+fi
+  if test "$pspp_required_prereqs" != ""; then
+    AC_MSG_ERROR([The following required prerequisites are not installed.
+You must install them before PSPP can be built:$pspp_required_prereqs])
+fi
+])
+    
+
+dnl Check that a new enough version of Perl is available.
+AC_DEFUN([PSPP_PERL],
+[
+  AC_PATH_PROG([PERL], perl, no)
+  AC_SUBST([PERL])dnl
+  if test "$PERL" != no && $PERL -e 'require 5.005_03;'; then :; else
+    PSPP_REQUIRED_PREREQ([Perl 5.005_03 (or later)])
+  fi
+])
+
+dnl Check that libplot is available.
+AC_DEFUN([PSPP_LIBPLOT],
+[
+  AC_ARG_WITH(libplot, [  --without-libplot         don't compile in support of charts (using libplot)])
+
+  if test x"$with_libplot" != x"no" ; then 
+    AC_CHECK_LIB(plot, pl_newpl_r,,
+                [PSPP_REQUIRED_PREREQ([libplot (or use --without-libplot)])])
+  fi
+])
+
+dnl Check that off_t is defined as an integer type.
+dnl Solaris sometimes declares it as a struct, if it
+dnl thinks that the compiler does not support `long long'.
+AC_DEFUN([PSPP_OFF_T],
+[
+  AC_COMPILE_IFELSE([#include <sys/types.h>
+  #include <unistd.h>
+  off_t x = 0;
+  int main (void) 
+  { 
+    lseek (0, 1, 2);
+    return 0;
+  }], [], [AC_MSG_ERROR(
+  [Your system's definition of off_t is broken.  You are probably
+  using Solaris.  You can probably fix the problem with
+  `--disable-largefile' or `CFLAGS=-ansi'.])])
+])
+
+dnl Check whether a C compiler option is accepted.
+dnl If so, add it to CFLAGS.
+dnl Example: PSPP_ENABLE_OPTION(-Wdeclaration-after-statement)
+AC_DEFUN([PSPP_ENABLE_OPTION],
+[
+  m4_define([pspp_cv_name], [pspp_cv_[]m4_translit([$1], [-], [_])])dnl
+  AC_CACHE_CHECK([whether $CC accepts $1], [pspp_cv_name], 
+    [pspp_save_CFLAGS="$CFLAGS"
+     CFLAGS="$CFLAGS $1"
+     AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [pspp_cv_name[]=yes], [pspp_cv_name[]=no])
+     CFLAGS="$pspp_save_CFLAGS"])
+  if test $pspp_cv_name = yes; then
+    CFLAGS="$CFLAGS $1"
+  fi
+])
+

 dnl Check for readline and history libraries.
 
 dnl Check for readline and history libraries.
 

-dnl Modified for PSPP by Ben Pfaff, based on readline.m4 serial 3 from
+dnl Modified for PSPP, based on readline.m4 serial 3 from

 dnl gnulib, which was written by Simon Josefsson, with help from Bruno
 dnl Haible and Oskar Liljeblad.
 
 dnl gnulib, which was written by Simon Josefsson, with help from Bruno
 dnl Haible and Oskar Liljeblad.
 


@@ -58,9 +134,6 @@ AC_DEFUN([PSPP_READLINE],
 
   if test "$gl_cv_lib_readline" = yes; then
     AC_DEFINE(HAVE_READLINE, 1, [Define if you have the readline library.])
 
   if test "$gl_cv_lib_readline" = yes; then
     AC_DEFINE(HAVE_READLINE, 1, [Define if you have the readline library.])

-  fi
-
-  if test "$gl_cv_lib_readline" = yes; then

     AC_MSG_CHECKING([how to link with libreadline])
     AC_MSG_RESULT([$LIBREADLINE])
   else
     AC_MSG_CHECKING([how to link with libreadline])
     AC_MSG_RESULT([$LIBREADLINE])
   else


@@ -71,9 +144,45 @@ AC_DEFUN([PSPP_READLINE],
     LTLIBREADLINE=
     LIBHISTORY=
     LTLIBHISTORY=
     LTLIBREADLINE=
     LIBHISTORY=
     LTLIBHISTORY=

+    PSPP_OPTIONAL_PREREQ([libreadline (which may itself require libncurses or libtermcap)])

   fi
   AC_SUBST(LIBREADLINE)
   AC_SUBST(LTLIBREADLINE)
 ])
 
   fi
   AC_SUBST(LIBREADLINE)
   AC_SUBST(LTLIBREADLINE)
 ])
 

+dnl Check for build tools.  Adapted from bfd library.
+
+AC_DEFUN([PSPP_CC_FOR_BUILD],
+[# Put a plausible default for CC_FOR_BUILD in Makefile.
+if test -z "$CC_FOR_BUILD"; then
+  if test "x$cross_compiling" = "xno"; then
+    CC_FOR_BUILD='$(CC)'
+  else
+    CC_FOR_BUILD=cc
+  fi
+fi
+AC_SUBST(CC_FOR_BUILD)
+# Also set EXEEXT_FOR_BUILD.
+if test "x$cross_compiling" = "xno"; then
+  EXEEXT_FOR_BUILD='$(EXEEXT)'
+else
+  AC_CACHE_CHECK([for build system executable suffix], pspp_cv_build_exeext,
+    [rm -f conftest*
+     echo 'int main () { return 0; }' > conftest.c
+     pspp_cv_build_exeext=
+     ${CC_FOR_BUILD} -o conftest conftest.c 1>&5 2>&5
+     for file in conftest.*; do
+       case $file in # (
+       *.c | *.o | *.obj | *.ilk | *.pdb) ;; # (
+       *) pspp_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
+       esac
+     done
+     rm -f conftest*
+     test x"${pspp_cv_build_exeext}" = x && pspp_cv_build_exeext=no])
+  EXEEXT_FOR_BUILD=""
+  test x"${pspp_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${pspp_cv_build_exeex
+t}
+fi
+AC_SUBST(EXEEXT_FOR_BUILD)])
+

 dnl aclocal.m4 ends here
 dnl aclocal.m4 ends here