Patches for building BLT on MacOS X

[Bill Northcott]

Hi George

Sorry about the triple address but you seem to have a number of addresses 
in the documentation.

I have managed to get BLT2.4z to build and apparently run on MacOS X with 
only minimal mods to configure.in and aclocal.m4.  The Diffs are below 
with comments.  None of these things seem to be changed in the current 
CVS.

My system is MacOS X 10.2.2 with all up to date patches.  The compiler is 
gcc3.3 from Apple CVS based on FSF gcc3.3 20021120.
Xfree86/XDarwin 4.2.1.1 with OroborosX 0.8b2 (which crashes on some Tk 
tests)
Tcl/Tk are version 8.4.1 compiled as shared libraries.

Hopefully these mods could be incorporated in the CVS.

Thanks for all your good work.
Bill Northcott
School of Banking and Finance, UNSW

[qs-3051:~/Public/Swarm/blt2.4z] billn% diff -c configure.in 
../blt2.4zbuild/configure.in
*** configure.in        Fri Oct  4 05:33:23 2002
--- ../blt2.4zbuild/configure.in        Thu Dec  5 12:32:51 2002
***************
# O6 is not documented on my compiler
*** 153,159 ****
  elif test "x${blt_cv_prog_cflags}" != "x" ; then
    CFLAGS=${blt_cv_prog_cflags}
  elif test "${blt_have_gcc}" = "yes" ; then
!   CFLAGS=-O6
  else
    CFLAGS=-O
  fi
--- 153,159 ----
  elif test "x${blt_cv_prog_cflags}" != "x" ; then
    CFLAGS=${blt_cv_prog_cflags}
  elif test "${blt_have_gcc}" = "yes" ; then
!   CFLAGS=-O2
  else
    CFLAGS=-O
  fi
***************
# As far as I know macosx will never be returned as a system name by 
config.guess.  'unix' does nicely
*** 183,191 ****
        blt_lib_prefix=""
      fi
      ;;
-   *-*-macosx)
-     blt_platform="macosx"
-     ;;
    *)
      blt_platform="unix"
      ;;
--- 183,188 ----
***************
# This confuses me.  Just a comment
*** 658,663 ****
--- 655,661 ----
  . $tcl_config_sh
  . $tk_config_sh

+ # Why override tkConfig.sh and tclConfig.sh?
  TCL_INC_DIR=""
  TK_INC_DIR=""

***************
# The preferred shared library on Darwin/OS X is .dylib.  Tcl/Tk builds 
that way and so does BLT with these mods
# This override of of Config.sh files causes problems on Darwin
*** 721,733 ****
      ;;
  esac

! TCL_LIB_SPEC="-l${TCL_LIB_NAME}"
! TK_LIB_SPEC="-l${TK_LIB_NAME}"

  case $target in
    *-hpux*)
      SHLIB_SUFFIX="sl"
      ;;
    *)
      SHLIB_SUFFIX="so"
      ;;
--- 719,735 ----
      ;;
  esac

! # Why override tkConfig.sh and tclConfig.sh
! # TCL_LIB_SPEC="-l${TCL_LIB_NAME}"
! # TK_LIB_SPEC="-l${TK_LIB_NAME}"

  case $target in
    *-hpux*)
      SHLIB_SUFFIX="sl"
      ;;
+   *-*-darwin*)
+     SHLIB_SUFFIX="dylib"
+     ;;
    *)
      SHLIB_SUFFIX="so"
      ;;
***************
# Consistency with Tcl/Tk
*** 1053,1065 ****
  SHLIB_LD_FLAGS="$TCL_LD_FLAGS"
  SHLIB_RUNPATH="$TCL_LD_SEARCH_FLAGS"

! SHLIB_SUFFIX=".so"
  SHLIB_TARGET=""
- SHLIB_CFLAGS=""
  SHLIB_LIB_SPECS="${JPEG_LIB_SPEC}"
- SHLIB_TCL_ONLY_LIB_SPECS="${TCL_ONLY_LIB_SPECS}"
  SHLIB_TCL_ONLY_LIB_SPECS=""
- LDFLAGS=""
  LD_RUN_PATH=""
  EXTRA_LIB_SPECS=""

--- 1055,1064 ----
  SHLIB_LD_FLAGS="$TCL_LD_FLAGS"
  SHLIB_RUNPATH="$TCL_LD_SEARCH_FLAGS"

! SHLIB_SUFFIX="$TCL_SHLIB_SUFFIX"
  SHLIB_TARGET=""
  SHLIB_LIB_SPECS="${JPEG_LIB_SPEC}"
  SHLIB_TCL_ONLY_LIB_SPECS=""
  LD_RUN_PATH=""
  EXTRA_LIB_SPECS=""

***************
# Darwin shared libs.  -dynamiclib is used by Tcl but -shared might work. 
-fno-common is vital
*** 1145,1150 ****
--- 1144,1158 ----
      LDFLAGS=""
      ;;

+   *-*-darwin*)
+       SHLIB_LIB_SPECS="${LIB_SPECS}"
+       SHLIB_TCL_ONLY_LIB_SPECS="${TCL_LIB_SPEC}"
+     SHLIB_CFLAGS="-fno-common"
+     SHLIB_LD="${CC}"
+     SHLIB_LD_FLAGS='-dynamiclib'
+     LDFLAGS=""
+     ;;
+
    *-dgux*)
      SHLIB_CFLAGS="-K PIC"
      SHLIB_LD="cc"
***************
# -fPIC is unnecessary but does no harm but we need to keep the 
-fno-common from above
*** 1348,1355 ****
  # compiler.


  if test "$blt_have_gcc" = "yes" ; then
!   SHLIB_CFLAGS="-fPIC"
  fi

  # We can't back link against static versions of Tcl/Tk.
--- 1356,1364 ----
  # compiler.


+ #Why dump the OS dependent stuff?
  if test "$blt_have_gcc" = "yes" ; then
!   SHLIB_CFLAGS="${SHLIB_CFLAGS} -fPIC"
  fi

  # We can't back link against static versions of Tcl/Tk.
***************
# For testing only
*** 1414,1419 ****
--- 1423,1431 ----
  echo "  lib${TCL_LIB_NAME}  found in  $TCL_LIB_DIR"
  echo "  lib${TK_LIB_NAME}   found in  $TK_LIB_DIR"
  echo "  libX11     found in  $x_libraries"
+ echo "  SHLIB_CFLAGS            $SHLIB_CFLAGS"
+ echo "  SHLIB_LD        $SHLIB_LD"
+ echo "  SHLIB_LIB_SPECS         $SHLIB_LIB_SPECS"
  echo ""
  echo "Directories where BLT is to be installed:"
  echo ""


[qs-3051:~/Public/Swarm/blt2.4z] billn% diff -c aclocal.m4 
../blt2.4zbuild/aclocal.m4
*** aclocal.m4  Wed Apr  3 08:25:20 2002
--- ../blt2.4zbuild/aclocal.m4  Wed Dec  4 19:32:45 2002
***************
# Obsolete autoconf syntax.  Breaks on OS X 10.2 autoconf 2.55
*** 12,18 ****
  cat > conftest.$ac_ext <<EOF
  [#]line __oline__ "configure"
  #include "confdefs.h"
! ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
  extern "C" void exit(int);
  #endif
  ])dnl
--- 12,18 ----
  cat > conftest.$ac_ext <<EOF
  [#]line __oline__ "configure"
  #include "confdefs.h"
! ifelse(AC_LANG_CURRENT, C++, [#ifdef __cplusplus
  extern "C" void exit(int);
  #endif
  ])dnl
[qs-3051:~/Public/Swarm/blt2.4z] billn%

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