1#! /bin/sh
2# Wrapper for compilers which do not understand '-c -o'.
3
4scriptversion=2018-03-07.03; # UTC
5
6# Copyright (C) 1999-2021 Free Software Foundation, Inc.
7# Written by Tom Tromey <tromey@cygnus.com>.
8#
9# This program is free software; you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation; either version 2, or (at your option)
12# any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program.  If not, see <https://www.gnu.org/licenses/>.
21
22# As a special exception to the GNU General Public License, if you
23# distribute this file as part of a program that contains a
24# configuration script generated by Autoconf, you may include it under
25# the same distribution terms that you use for the rest of that program.
26
27# This file is maintained in Automake, please report
28# bugs to <bug-automake@gnu.org> or send patches to
29# <automake-patches@gnu.org>.
30
31nl='
32'
33
34# We need space, tab and new line, in precisely that order.  Quoting is
35# there to prevent tools from complaining about whitespace usage.
36IFS=" ""  $nl"
37
38file_conv=
39
40# func_file_conv build_file lazy
41# Convert a $build file to $host form and store it in $file
42# Currently only supports Windows hosts. If the determined conversion
43# type is listed in (the comma separated) LAZY, no conversion will
44# take place.
45func_file_conv ()
46{
47  file=$1
48  case $file in
49    / | /[!/]*) # absolute file, and not a UNC file
50      if test -z "$file_conv"; then
51          # lazily determine how to convert abs files
52          case `uname -s` in
53            MINGW*)
54              file_conv=mingw
55              ;;
56            CYGWIN* | MSYS*)
57              file_conv=cygwin
58              ;;
59            *)
60              file_conv=wine
61              ;;
62          esac
63      fi
64      case $file_conv/,$2, in
65          *,$file_conv,*)
66            ;;
67          mingw/*)
68            file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
69            ;;
70          cygwin/* | msys/*)
71            file=`cygpath -m "$file" || echo "$file"`
72            ;;
73          wine/*)
74            file=`winepath -w "$file" || echo "$file"`
75            ;;
76      esac
77      ;;
78  esac
79}
80
81# func_cl_dashL linkdir
82# Make cl look for libraries in LINKDIR
83func_cl_dashL ()
84{
85  func_file_conv "$1"
86  if test -z "$lib_path"; then
87    lib_path=$file
88  else
89    lib_path="$lib_path;$file"
90  fi
91  linker_opts="$linker_opts -LIBPATH:$file"
92}
93
94# func_cl_dashl library
95# Do a library search-path lookup for cl
96func_cl_dashl ()
97{
98  lib=$1
99  found=no
100  save_IFS=$IFS
101  IFS=';'
102  for dir in $lib_path $LIB
103  do
104    IFS=$save_IFS
105    if $shared && test -f "$dir/$lib.dll.lib"; then
106      found=yes
107      lib=$dir/$lib.dll.lib
108      break
109    fi
110    if test -f "$dir/$lib.lib"; then
111      found=yes
112      lib=$dir/$lib.lib
113      break
114    fi
115    if test -f "$dir/lib$lib.a"; then
116      found=yes
117      lib=$dir/lib$lib.a
118      break
119    fi
120  done
121  IFS=$save_IFS
122
123  if test "$found" != yes; then
124    lib=$lib.lib
125  fi
126}
127
128# func_cl_wrapper cl arg...
129# Adjust compile command to suit cl
130func_cl_wrapper ()
131{
132  # Assume a capable shell
133  lib_path=
134  shared=:
135  linker_opts=
136  for arg
137  do
138    if test -n "$eat"; then
139      eat=
140    else
141      case $1 in
142          -o)
143            # configure might choose to run compile as 'compile cc -o foo foo.c'.
144            eat=1
145            case $2 in
146              *.o | *.[oO][bB][jJ])
147                func_file_conv "$2"
148                set x "$@" -Fo"$file"
149                shift
150                ;;
151              *)
152                func_file_conv "$2"
153                set x "$@" -Fe"$file"
154                shift
155                ;;
156            esac
157            ;;
158          -I)
159            eat=1
160            func_file_conv "$2" mingw
161            set x "$@" -I"$file"
162            shift
163            ;;
164          -I*)
165            func_file_conv "${1#-I}" mingw
166            set x "$@" -I"$file"
167            shift
168            ;;
169          -l)
170            eat=1
171            func_cl_dashl "$2"
172            set x "$@" "$lib"
173            shift
174            ;;
175          -l*)
176            func_cl_dashl "${1#-l}"
177            set x "$@" "$lib"
178            shift
179            ;;
180          -L)
181            eat=1
182            func_cl_dashL "$2"
183            ;;
184          -L*)
185            func_cl_dashL "${1#-L}"
186            ;;
187          -static)
188            shared=false
189            ;;
190          -Wl,*)
191            arg=${1#-Wl,}
192            save_ifs="$IFS"; IFS=','
193            for flag in $arg; do
194              IFS="$save_ifs"
195              linker_opts="$linker_opts $flag"
196            done
197            IFS="$save_ifs"
198            ;;
199          -Xlinker)
200            eat=1
201            linker_opts="$linker_opts $2"
202            ;;
203          -*)
204            set x "$@" "$1"
205            shift
206            ;;
207          *.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
208            func_file_conv "$1"
209            set x "$@" -Tp"$file"
210            shift
211            ;;
212          *.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
213            func_file_conv "$1" mingw
214            set x "$@" "$file"
215            shift
216            ;;
217          *)
218            set x "$@" "$1"
219            shift
220            ;;
221      esac
222    fi
223    shift
224  done
225  if test -n "$linker_opts"; then
226    linker_opts="-link$linker_opts"
227  fi
228  exec "$@" $linker_opts
229  exit 1
230}
231
232eat=
233
234case $1 in
235  '')
236     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
237     exit 1;
238     ;;
239  -h | --h*)
240    cat <<\EOF
241Usage: compile [--help] [--version] PROGRAM [ARGS]
242
243Wrapper for compilers which do not understand '-c -o'.
244Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
245arguments, and rename the output as expected.
246
247If you are trying to build a whole package this is not the
248right script to run: please start by reading the file 'INSTALL'.
249
250Report bugs to <bug-automake@gnu.org>.
251EOF
252    exit $?
253    ;;
254  -v | --v*)
255    echo "compile $scriptversion"
256    exit $?
257    ;;
258  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
259  icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
260    func_cl_wrapper "$@"      # Doesn't return...
261    ;;
262esac
263
264ofile=
265cfile=
266
267for arg
268do
269  if test -n "$eat"; then
270    eat=
271  else
272    case $1 in
273      -o)
274          # configure might choose to run compile as 'compile cc -o foo foo.c'.
275          # So we strip '-o arg' only if arg is an object.
276          eat=1
277          case $2 in
278            *.o | *.obj)
279              ofile=$2
280              ;;
281            *)
282              set x "$@" -o "$2"
283              shift
284              ;;
285          esac
286          ;;
287      *.c)
288          cfile=$1
289          set x "$@" "$1"
290          shift
291          ;;
292      *)
293          set x "$@" "$1"
294          shift
295          ;;
296    esac
297  fi
298  shift
299done
300
301if test -z "$ofile" || test -z "$cfile"; then
302  # If no '-o' option was seen then we might have been invoked from a
303  # pattern rule where we don't need one.  That is ok -- this is a
304  # normal compilation that the losing compiler can handle.  If no
305  # '.c' file was seen then we are probably linking.  That is also
306  # ok.
307  exec "$@"
308fi
309
310# Name of file we expect compiler to create.
311cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
312
313# Create the lock directory.
314# Note: use '[/\\:.-]' here to ensure that we don't use the same name
315# that we are using for the .o file.  Also, base the name on the expected
316# object file name, since that is what matters with a parallel build.
317lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
318while true; do
319  if mkdir "$lockdir" >/dev/null 2>&1; then
320    break
321  fi
322  sleep 1
323done
324# FIXME: race condition here if user kills between mkdir and trap.
325trap "rmdir '$lockdir'; exit 1" 1 2 15
326
327# Run the compile.
328"$@"
329ret=$?
330
331if test -f "$cofile"; then
332  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
333elif test -f "${cofile}bj"; then
334  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
335fi
336
337rmdir "$lockdir"
338exit $ret
339
340# Local Variables:
341# mode: shell-script
342# sh-indentation: 2
343# eval: (add-hook 'before-save-hook 'time-stamp)
344# time-stamp-start: "scriptversion="
345# time-stamp-format: "%:y-%02m-%02d.%02H"
346# time-stamp-time-zone: "UTC0"
347# time-stamp-end: "; # UTC"
348# End:
349