mirror of
https://github.com/vim/vim
synced 2025-04-30 13:27:47 +02:00
136 lines
4.2 KiB
Bash
Executable file
136 lines
4.2 KiB
Bash
Executable file
#! /bin/sh
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#
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# link.sh -- try linking Vim with different sets of libraries, finding the
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# minimal set for fastest startup. The problem is that configure adds a few
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# libraries when they exist, but this doesn't mean they are needed for Vim.
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#
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# Author: Bram Moolenaar
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# Last change: 2005 Jan 25
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#
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# Warning: This fails miserably if the linker doesn't return an error code!
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#
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# Otherwise this script is fail-safe, falling back to the original full link
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# command if anything fails.
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echo "$LINK " >link.cmd
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exit_value=0
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#
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# If auto/link.sed already exists, use it. We assume a previous run of
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# link.sh has found the correct set of libraries.
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#
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if test -f auto/link.sed; then
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echo "link.sh: The file 'auto/link.sed' exists, which is going to be used now."
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echo "link.sh: If linking fails, try deleting the auto/link.sed file."
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echo "link.sh: If this fails too, try creating an empty auto/link.sed file."
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else
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# If linking works with the full link command, try removing some libraries,
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# that are known not to be needed on at least one system.
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# Remove auto/pathdef.c if there is a new link command and compile it again.
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# There is a loop to remove libraries that appear several times.
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#
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# Notes:
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# - Can't remove Xext; It links fine but will give an error when running gvim
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# with Motif.
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# - Don't remove the last -lm: On HP-UX Vim links OK but crashes when the GTK
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# GUI is started, because the "floor" symbol could not be resolved.
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#
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cat link.cmd
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if sh link.cmd; then
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touch auto/link.sed
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cp link.cmd linkit.sh
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for libname in SM ICE nsl dnet dnet_stub inet socket dir elf iconv Xt Xmu Xp Xpm X11 Xdmcp x w dl pthread thread readline m perl crypt attr; do
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cont=yes
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while test -n "$cont"; do
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if grep "l$libname " linkit.sh >/dev/null; then
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if test ! -f link1.sed; then
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echo "link.sh: OK, linking works, let's try removing a few libraries."
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echo "link.sh: See auto/link.log for details."
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rm -f auto/link.log
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fi
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echo "s/-l$libname *//" >link1.sed
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sed -f auto/link.sed <link.cmd >linkit2.sh
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sed -f link1.sed <linkit2.sh >linkit.sh
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# keep the last -lm
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if test $libname != "m" || grep "lm " linkit.sh >/dev/null; then
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echo "link.sh: Trying to remove the $libname library..."
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cat linkit.sh >>auto/link.log
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# Redirect this link output, it may contain error messages which
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# should be ignored.
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if sh linkit.sh >>auto/link.log 2>&1; then
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echo "link.sh: We don't need the $libname library!"
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cat link1.sed >>auto/link.sed
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rm -f auto/pathdef.c
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else
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echo "link.sh: We DO need the $libname library."
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cont=
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cp link.cmd linkit.sh
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fi
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else
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cont=
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cp link.cmd linkit.sh
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fi
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else
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cont=
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cp link.cmd linkit.sh
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fi
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done
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done
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if test ! -f auto/pathdef.c; then
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$MAKE objects/pathdef.o
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fi
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if test ! -f link1.sed; then
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echo "link.sh: Linked fine, no libraries can be removed"
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touch link3.sed
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fi
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else
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exit_value=$?
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fi
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fi
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#
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# Now do the real linking.
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#
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if test -s auto/link.sed; then
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echo "link.sh: Using auto/link.sed file to remove a few libraries"
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sed -f auto/link.sed <link.cmd >linkit.sh
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cat linkit.sh
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if sh linkit.sh; then
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exit_value=0
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echo "link.sh: Linked fine with a few libraries removed"
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else
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exit_value=$?
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echo "link.sh: Linking failed, making auto/link.sed empty and trying again"
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mv -f auto/link.sed link2.sed
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touch auto/link.sed
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rm -f auto/pathdef.c
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$MAKE objects/pathdef.o
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fi
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fi
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if test -f auto/link.sed -a ! -s auto/link.sed -a ! -f link3.sed; then
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echo "link.sh: Using unmodified link command"
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cat link.cmd
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if sh link.cmd; then
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exit_value=0
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echo "link.sh: Linked OK"
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else
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exit_value=$?
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if test -f link2.sed; then
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echo "link.sh: Linking doesn't work at all, removing auto/link.sed"
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rm -f auto/link.sed
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fi
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fi
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fi
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#
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# cleanup
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#
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rm -f link.cmd linkit.sh link1.sed link2.sed link3.sed linkit2.sh
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#
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# return an error code if something went wrong
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#
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exit $exit_value
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# vim:set sw=2 et:
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