patches for building loadable modules

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patches for building loadable modules

From:	Schleicher Ralph (LLI)
Subject:	patches for building loadable modules
Date:	Thu, 19 Sep 2002 18:37:54 +0200
libtool 1.4.2

Hi,

here is a patch for Libtool for more control about how libraries
(especially loadable modules) are compiled and linked.

First, a -no-static option is added to (a) not compile static object
files and (b) not create static libtool libraries.

Second, a -soext option is added to override the default file name
extension of shared libraries (.so on most systems).

With this patch applied, my Makefile.am looks like this:

    # Matlab MEX-file.
    matlabarch_LTLIBRARIES = hell.la

    hell_la_SOURCES = hell.c
    hell_la_CFLAGS = -no-static \
        -DMATLAB_MEX_FILE -I$(MATLAB)/extern/include
    hell_la_LDFLAGS = -no-static -module -avoid-version \
        -export-symbols mex-symbols -soext .$(MEXEXT)
    hell_la_LIBADD = $(MEX_LIBADD)

The result is a working Matlab MEX-file:

    $ cd .libs
    $ ls -l
          10 Sep 19 18:17 hell.la -> ../hell.la
         814 Sep 19 18:17 hell.lai
       35116 Sep 19 18:17 hell.mexhpux*
    $ matlab
    >> hell
    Hello world!
    Good bye sailor!
    >> quit

Here's the patch (a second generic libtool patch for better MinGW
support is added below, apply it first if patch rejects some hunks):

diff -c2 ltmain.in.orig ltmain.in
*** ltmain.in.orig      Fri May 17 13:43:24 2002
--- ltmain.in   Thu Sep 19 17:43:13 2002
***************
*** 320,323 ****
--- 320,332 ----
        ;;
  
+       -no-static)
+       if test "$build_libtool_libs" != yes; then
+         echo "$modename: not configured to build shared libraries" 1>&2
+         exit 1
+       fi
+       build_old_libs=no
+       continue
+       ;;
+ 
        -prefer-pic)
        pic_mode=yes
***************
*** 785,788 ****
--- 794,798 ----
  
      # We need to know -static, to get the right output filenames.
+     can_build_libtool_libs=$build_libtool_libs
      for arg
      do
***************
*** 806,809 ****
--- 816,828 ----
        break
        ;;
+       -no-static)
+       if test "$can_build_libtool_libs" != yes; then
+         echo "$modename: not configured to build shared libraries" 1>&2
+         exit 1
+       fi
+       dlopen_self=unknown
+       build_libtool_libs=yes
+       build_old_libs=no
+       ;;
        esac
      done
***************
*** 1124,1127 ****
--- 1143,1151 ----
        ;;
  
+       -soext)
+       prev=soext
+       continue
+       ;;
+ 
        -static)
        # The effects of -static are defined in a previous loop.
***************
*** 4853,4856 ****
--- 4877,4881 ----
    -prefer-non-pic   try to building non-PIC objects only
    -static           always build a \`.o' file suitable for static linking
+   -no-static        never build a \`.o' file suitable for static linking
  
  COMPILE-COMMAND is a command to be used in creating a \`standard' object file
***************
*** 4938,4942 ****
--- 4963,4969 ----
    -rpath LIBDIR     the created library will eventually be installed in LIBDIR
    -R[ ]LIBDIR       add LIBDIR to the runtime path of programs and libraries
+   -soext SUFFIX     use SUFFIX for the file name extension of the library
    -static           do not do any dynamic linking of libtool libraries
+   -no-static        never create static libtool libraries
    -version-info CURRENT[:REVISION[:AGE]]
                    specify library version info [each variable defaults to 0]
diff -c2 libtool.m4.orig libtool.m4
*** libtool.m4.orig     Tue Sep 11 05:16:01 2001
--- libtool.m4  Thu Sep 19 17:39:02 2002
***************
*** 1925,1928 ****
--- 1925,1929 ----
  libname_spec='lib$name'
  soname_spec=
+ soext=.so
  postinstall_cmds=
  postuninstall_cmds=
***************
*** 1939,1947 ****
  aix3*)
    version_type=linux
!   library_names_spec='${libname}${release}.so$versuffix $libname.a'
    shlibpath_var=LIBPATH
  
    # AIX has no versioning support, so we append a major version to the name.
!   soname_spec='${libname}${release}.so$major'
    ;;
  
--- 1940,1948 ----
  aix3*)
    version_type=linux
!   library_names_spec='${libname}${release}$soext$versuffix $libname.a'
    shlibpath_var=LIBPATH
  
    # AIX has no versioning support, so we append a major version to the name.
!   soname_spec='${libname}${release}$soext$major'
    ;;
  
***************
*** 1950,1954 ****
    if test "$host_cpu" = ia64; then
      # AIX 5 supports IA64
!     library_names_spec='${libname}${release}.so$major 
${libname}${release}.so$versuffix $libname.so'
      shlibpath_var=LD_LIBRARY_PATH
    else
--- 1951,1955 ----
    if test "$host_cpu" = ia64; then
      # AIX 5 supports IA64
!     library_names_spec='${libname}${release}$soext$major 
${libname}${release}$soext$versuffix $libname$soext'
      shlibpath_var=LD_LIBRARY_PATH
    else
***************
*** 1977,1986 ****
        # instead of lib<name>.a to let people know that these are not
        # typical AIX shared libraries.
!       library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so$major $libname.so'
      else
        # We preserve .a as extension for shared libraries through AIX4.2
        # and later when we are not doing run time linking.
        library_names_spec='${libname}${release}.a $libname.a'
!       soname_spec='${libname}${release}.so$major'
      fi
      shlibpath_var=LIBPATH
--- 1978,1987 ----
        # instead of lib<name>.a to let people know that these are not
        # typical AIX shared libraries.
!       library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major $libname$soext'
      else
        # We preserve .a as extension for shared libraries through AIX4.2
        # and later when we are not doing run time linking.
        library_names_spec='${libname}${release}.a $libname.a'
!       soname_spec='${libname}${release}$soext$major'
      fi
      shlibpath_var=LIBPATH
***************
*** 1995,1999 ****
  
  beos*)
!   library_names_spec='${libname}.so'
    dynamic_linker="$host_os ld.so"
    shlibpath_var=LIBRARY_PATH
--- 1996,2000 ----
  
  beos*)
!   library_names_spec='${libname}$soext'
    dynamic_linker="$host_os ld.so"
    shlibpath_var=LIBRARY_PATH
***************
*** 2003,2008 ****
    version_type=linux
    need_version=no
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so$major $libname.so'
!   soname_spec='${libname}${release}.so$major'
    finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
    shlibpath_var=LD_LIBRARY_PATH
--- 2004,2009 ----
    version_type=linux
    need_version=no
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major $libname$soext'
!   soname_spec='${libname}${release}$soext$major'
    finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
    shlibpath_var=LD_LIBRARY_PATH
***************
*** 2055,2060 ****
    #        cross-compilation, but unfortunately the echo tests do not
    #        yet detect zsh echo's removal of \ escapes.
!   library_names_spec='${libname}${release}${versuffix}.$(test .$module = .yes 
&& echo so || echo dylib) ${libname}${release}${major}.$(test .$module = .yes 
&& echo so || echo dylib) ${libname}.$(test .$module = .yes && echo so || echo 
dylib)'
!   soname_spec='${libname}${release}${major}.$(test .$module = .yes && echo so 
|| echo dylib)'
    shlibpath_overrides_runpath=yes
    shlibpath_var=DYLD_LIBRARY_PATH
--- 2056,2061 ----
    #        cross-compilation, but unfortunately the echo tests do not
    #        yet detect zsh echo's removal of \ escapes.
!   library_names_spec='${libname}${release}${versuffix}$(test .$module = .yes 
&& echo $soext || echo .dylib) ${libname}${release}${major}$(test .$module = 
.yes && echo $soext || echo .dylib) ${libname}$(test .$module = .yes && echo 
$soext || echo .dylib)'
!   soname_spec='${libname}${release}${major}$(test .$module = .yes && echo 
$soext || echo .dylib)'
    shlibpath_overrides_runpath=yes
    shlibpath_var=DYLD_LIBRARY_PATH
***************
*** 2070,2079 ****
    case $version_type in
      freebsd-elf*)
!       library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so $libname.so'
        need_version=no
        need_lib_prefix=no
        ;;
      freebsd-*)
!       library_names_spec='${libname}${release}.so$versuffix 
$libname.so$versuffix'
        need_version=yes
        ;;
--- 2071,2080 ----
    case $version_type in
      freebsd-elf*)
!       library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext $libname$soext'
        need_version=no
        need_lib_prefix=no
        ;;
      freebsd-*)
!       library_names_spec='${libname}${release}$soext$versuffix 
$libname$soext$versuffix'
        need_version=yes
        ;;
***************
*** 2095,2100 ****
    need_lib_prefix=no
    need_version=no
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so${major} ${libname}.so'
!   soname_spec='${libname}${release}.so$major'
    shlibpath_var=LD_LIBRARY_PATH
    hardcode_into_libs=yes
--- 2096,2101 ----
    need_lib_prefix=no
    need_version=no
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext${major} ${libname}$soext'
!   soname_spec='${libname}${release}$soext$major'
    shlibpath_var=LD_LIBRARY_PATH
    hardcode_into_libs=yes
***************
*** 2110,2115 ****
    shlibpath_var=SHLIB_PATH
    shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
!   library_names_spec='${libname}${release}.sl$versuffix 
${libname}${release}.sl$major $libname.sl'
!   soname_spec='${libname}${release}.sl$major'
    # HP-UX runs *really* slowly unless shared libraries are mode 555.
    postinstall_cmds='chmod 555 $lib'
--- 2111,2117 ----
    shlibpath_var=SHLIB_PATH
    shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major $libname$soext'
!   soname_spec='${libname}${release}$soext$major'
!   soext=.sl
    # HP-UX runs *really* slowly unless shared libraries are mode 555.
    postinstall_cmds='chmod 555 $lib'
***************
*** 2120,2125 ****
    need_lib_prefix=no
    need_version=no
!   soname_spec='${libname}${release}.so$major'
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so$major ${libname}${release}.so $libname.so'
    case $host_os in
    irix5*)
--- 2122,2127 ----
    need_lib_prefix=no
    need_version=no
!   soname_spec='${libname}${release}$soext$major'
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major ${libname}${release}$soext $libname$soext'
    case $host_os in
    irix5*)
***************
*** 2151,2156 ****
    need_lib_prefix=no
    need_version=no
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so$major $libname.so'
!   soname_spec='${libname}${release}.so$major'
    finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
    shlibpath_var=LD_LIBRARY_PATH
--- 2153,2158 ----
    need_lib_prefix=no
    need_version=no
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major $libname$soext'
!   soname_spec='${libname}${release}$soext$major'
    finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
    shlibpath_var=LD_LIBRARY_PATH
***************
*** 2175,2184 ****
    need_version=no
    if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
!     library_names_spec='${libname}${release}.so$versuffix 
${libname}.so$versuffix'
      finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
      dynamic_linker='NetBSD (a.out) ld.so'
    else
!     library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so$major ${libname}${release}.so ${libname}.so'
!     soname_spec='${libname}${release}.so$major'
      dynamic_linker='NetBSD ld.elf_so'
    fi
--- 2177,2186 ----
    need_version=no
    if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
!     library_names_spec='${libname}${release}$soext$versuffix 
${libname}$soext$versuffix'
      finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
      dynamic_linker='NetBSD (a.out) ld.so'
    else
!     library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major ${libname}${release}$soext ${libname}$soext'
!     soname_spec='${libname}${release}$soext$major'
      dynamic_linker='NetBSD ld.elf_so'
    fi
***************
*** 2190,2194 ****
  newsos6)
    version_type=linux
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so$major $libname.so'
    shlibpath_var=LD_LIBRARY_PATH
    shlibpath_overrides_runpath=yes
--- 2192,2196 ----
  newsos6)
    version_type=linux
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major $libname$soext'
    shlibpath_var=LD_LIBRARY_PATH
    shlibpath_overrides_runpath=yes
***************
*** 2211,2215 ****
      shlibpath_overrides_runpath=yes
    fi
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}.so$versuffix'
    finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
    shlibpath_var=LD_LIBRARY_PATH
--- 2213,2217 ----
      shlibpath_overrides_runpath=yes
    fi
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}$soext$versuffix'
    finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
    shlibpath_var=LD_LIBRARY_PATH
***************
*** 2227,2232 ****
    version_type=osf
    need_version=no
!   soname_spec='${libname}${release}.so'
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so $libname.so'
    shlibpath_var=LD_LIBRARY_PATH
    sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc 
/usr/lib /usr/local/lib /var/shlib"
--- 2229,2234 ----
    version_type=osf
    need_version=no
!   soname_spec='${libname}${release}$soext'
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext $libname$soext'
    shlibpath_var=LD_LIBRARY_PATH
    sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc 
/usr/lib /usr/local/lib /var/shlib"
***************
*** 2236,2241 ****
  sco3.2v5*)
    version_type=osf
!   soname_spec='${libname}${release}.so$major'
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so$major $libname.so'
    shlibpath_var=LD_LIBRARY_PATH
    ;;
--- 2238,2243 ----
  sco3.2v5*)
    version_type=osf
!   soname_spec='${libname}${release}$soext$major'
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major $libname$soext'
    shlibpath_var=LD_LIBRARY_PATH
    ;;
***************
*** 2245,2250 ****
    need_lib_prefix=no
    need_version=no
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so$major $libname.so'
!   soname_spec='${libname}${release}.so$major'
    shlibpath_var=LD_LIBRARY_PATH
    shlibpath_overrides_runpath=yes
--- 2247,2252 ----
    need_lib_prefix=no
    need_version=no
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major $libname$soext'
!   soname_spec='${libname}${release}$soext$major'
    shlibpath_var=LD_LIBRARY_PATH
    shlibpath_overrides_runpath=yes
***************
*** 2256,2260 ****
  sunos4*)
    version_type=sunos
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}.so$versuffix'
    finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
    shlibpath_var=LD_LIBRARY_PATH
--- 2258,2262 ----
  sunos4*)
    version_type=sunos
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}$soext$versuffix'
    finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
    shlibpath_var=LD_LIBRARY_PATH
***************
*** 2268,2273 ****
  sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
    version_type=linux
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so$major $libname.so'
!   soname_spec='${libname}${release}.so$major'
    shlibpath_var=LD_LIBRARY_PATH
    case $host_vendor in
--- 2270,2275 ----
  sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
    version_type=linux
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major $libname$soext'
!   soname_spec='${libname}${release}$soext$major'
    shlibpath_var=LD_LIBRARY_PATH
    case $host_vendor in
***************
*** 2286,2291 ****
  uts4*)
    version_type=linux
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so$major $libname.so'
!   soname_spec='${libname}${release}.so$major'
    shlibpath_var=LD_LIBRARY_PATH
    ;;
--- 2288,2293 ----
  uts4*)
    version_type=linux
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major $libname$soext'
!   soname_spec='${libname}${release}$soext$major'
    shlibpath_var=LD_LIBRARY_PATH
    ;;
***************
*** 2295,2300 ****
    need_lib_prefix=no
    need_version=no
!   library_names_spec='${libname}${release}.so$versuffix 
${libname}${release}.so$major $libname.so'
!   soname_spec='${libname}${release}.so$major'
    shlibpath_var=LD_LIBRARY_PATH
    ;;
--- 2297,2302 ----
    need_lib_prefix=no
    need_version=no
!   library_names_spec='${libname}${release}$soext$versuffix 
${libname}${release}$soext$major $libname$soext'
!   soname_spec='${libname}${release}$soext$major'
    shlibpath_var=LD_LIBRARY_PATH
    ;;
***************
*** 2303,2308 ****
    if test -d /usr/nec ;then
      version_type=linux
!     library_names_spec='$libname.so.$versuffix $libname.so.$major $libname.so'
!     soname_spec='$libname.so.$major'
      shlibpath_var=LD_LIBRARY_PATH
    fi
--- 2305,2310 ----
    if test -d /usr/nec ;then
      version_type=linux
!     library_names_spec='$libname$soext.$versuffix $libname$soext.$major 
$libname$soext'
!     soname_spec='$libname$soext.$major'
      shlibpath_var=LD_LIBRARY_PATH
    fi
***************
*** 2453,2457 ****
      pic_flag link_static_flag no_builtin_flag export_dynamic_flag_spec \
      thread_safe_flag_spec whole_archive_flag_spec libname_spec \
!     library_names_spec soname_spec \
      RANLIB old_archive_cmds old_archive_from_new_cmds old_postinstall_cmds \
      old_postuninstall_cmds archive_cmds archive_expsym_cmds postinstall_cmds \
--- 2455,2459 ----
      pic_flag link_static_flag no_builtin_flag export_dynamic_flag_spec \
      thread_safe_flag_spec whole_archive_flag_spec libname_spec \
!     library_names_spec soname_spec soext \
      RANLIB old_archive_cmds old_archive_from_new_cmds old_postinstall_cmds \
      old_postuninstall_cmds archive_cmds archive_expsym_cmds postinstall_cmds \
***************
*** 2651,2654 ****
--- 2653,2659 ----
  # The coded name of the library, if different from the real name.
  soname_spec=$lt_soname_spec
+ 
+ # The file name extension of the library.
+ soext=$lt_soext
  
  # Commands used to build and install an old-style archive.



This is the MinGW patch:

*** ltmain.in.orig      Tue Sep 11 01:40:18 2001
--- ltmain.in   Fri May 17 13:43:24 2002
***************
*** 3713,3717 ****
  
        # Backslashes separate directories on plain windows
!       *-*-mingw | *-*-os2*)
          $echo >> $output "\
        exec \$progdir\\\\\$program \${1+\"address@hidden"}
--- 3713,3717 ----
  
        # Backslashes separate directories on plain windows
!       *-*-mingw* | *-*-os2*)
          $echo >> $output "\
        exec \$progdir\\\\\$program \${1+\"address@hidden"}
***************
*** 4274,4290 ****
  
        # Do a test to see if this is really a libtool program.
!       if (sed -e '4q' $file | egrep "^# Generated by .*$PACKAGE") >/dev/null 
2>&1; then
          notinst_deplibs=
          relink_command=
  
          # If there is no directory component, then add one.
!         case $file in
!         */* | *\\*) . $file ;;
!         *) . ./$file ;;
          esac
  
          # Check the variables that should have been set.
          if test -z "$notinst_deplibs"; then
!           $echo "$modename: invalid libtool wrapper script \`$file'" 1>&2
            exit 1
          fi
--- 4274,4296 ----
  
        # Do a test to see if this is really a libtool program.
!       tem=$file
!       case $host in
!         *-mingw*)
!           tem=`echo "$file" | sed 's,\.exe$,,'`
!           ;;
!       esac
!       if (sed -e '4q' $tem | egrep "^# Generated by .*$PACKAGE") >/dev/null 
2>&1; then
          notinst_deplibs=
          relink_command=
  
          # If there is no directory component, then add one.
!         case $tem in
!         */* | *\\*) . $tem ;;
!         *) . ./$tem ;;
          esac
  
          # Check the variables that should have been set.
          if test -z "$notinst_deplibs"; then
!           $echo "$modename: invalid libtool wrapper script \`$tem'" 1>&2
            exit 1
          fi
***************
*** 4310,4316 ****
          relink_command=
          # If there is no directory component, then add one.
!         case $file in
!         */* | *\\*) . $file ;;
!         *) . ./$file ;;
          esac
  
--- 4316,4322 ----
          relink_command=
          # If there is no directory component, then add one.
!         case $tem in
!         */* | *\\*) . $tem ;;
!         *) . ./$tem ;;
          esac
  

-- 
Ralph
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