| 1 | #!/bin/sh |
| 2 | # |
| 3 | # usage: |
| 4 | # cc-wrapper cc /path/to/cc -c -o foo.o foo.c |
| 5 | # cc-wrapper ld /path/to/ld -o foo foo.o |
| 6 | # |
| 7 | # This wraps running the compiler or linker, so we can tweak the files |
| 8 | # generated. Currently, this just involves running ctfconvert or ctfmerge on |
| 9 | # the relevant files, if available. |
| 10 | |
| 11 | set -e |
| 12 | |
| 13 | CTFCONVERT=@CTFCONVERT@ |
| 14 | CTFMERGE=@CTFMERGE@ |
| 15 | ctf_label=openafs |
| 16 | |
| 17 | mode="$1" |
| 18 | shift |
| 19 | |
| 20 | # First, run the command that we're wrapping. |
| 21 | "$@" |
| 22 | |
| 23 | # If we've reached here, the compiler/linker finished successfully, so now we |
| 24 | # can run ctfconvert/ctfmerge, if we're configured to. If we're not going to |
| 25 | # process ctf stuff, we can just exit immediately. |
| 26 | if [ x"$CTFCONVERT" = x ] || [ x"$CTFMERGE" = x ] ; then |
| 27 | exit 0 |
| 28 | fi |
| 29 | |
| 30 | # Look for our target file (indicated by '-o target'), and if debugging is |
| 31 | # turned on (indicated by '-g') |
| 32 | target= |
| 33 | target_next= |
| 34 | debug= |
| 35 | for arg in "$@" ; do |
| 36 | if [ x"$target_next" = x1 ] ; then |
| 37 | target="$arg" |
| 38 | target_next= |
| 39 | continue |
| 40 | fi |
| 41 | |
| 42 | case "$arg" in |
| 43 | -o) target_next=1 |
| 44 | ;; |
| 45 | -g) debug=1 |
| 46 | ;; |
| 47 | esac |
| 48 | done |
| 49 | |
| 50 | if [ x"$OPENAFS_CC_WRAPPER_DEBUG_FLAG" != x ] ; then |
| 51 | # Normally we try to determine if debugging is turned on by searching $@ |
| 52 | # for "-g". But sometimes we link something with debugging info and don't |
| 53 | # pass -g (the Solaris kernel module, for example). In this case, the |
| 54 | # caller can specify whether that debugging is turned on by setting the env |
| 55 | # var OPENAFS_CC_WRAPPER_DEBUG_FLAG to a nonempty string. |
| 56 | debug=1 |
| 57 | fi |
| 58 | |
| 59 | if [ x"$debug" = x ] ; then |
| 60 | # Don't run ctfconvert/ctfmerge if debugging isn't turned on. |
| 61 | exit 0 |
| 62 | fi |
| 63 | |
| 64 | if [ x"$target" = x ] ; then |
| 65 | echo "$0: error: cannot extract target from args" >&2 |
| 66 | exit 1 |
| 67 | fi |
| 68 | |
| 69 | echo_run() { |
| 70 | if [ x"$V" != x0 ] ; then |
| 71 | echo "$@" |
| 72 | fi |
| 73 | "$@" |
| 74 | } |
| 75 | |
| 76 | case "$mode" in |
| 77 | cc) |
| 78 | # It looks like we compiled a single object. For that, we just need to run |
| 79 | # 'ctfconvert' against the target .o. |
| 80 | echo_run "$CTFCONVERT" -g -l $ctf_label "$target" |
| 81 | ;; |
| 82 | |
| 83 | ld) |
| 84 | # It looks like we're linking an executable. For that, we need to give |
| 85 | # 'ctfmerge' every .o and .a that we're linking against. |
| 86 | |
| 87 | merge_objs= |
| 88 | for arg in "$@" ; do |
| 89 | case "$arg" in |
| 90 | *.[oa]) |
| 91 | merge_objs="$merge_objs $arg" |
| 92 | ;; |
| 93 | esac |
| 94 | done |
| 95 | |
| 96 | if [ x"$merge_objs" = x ] ; then |
| 97 | # If we can't find any .o or .a files that we're linking into the |
| 98 | # target executable, our caller is probably compiling/linking directly |
| 99 | # from foo.c into foo (skipping foo.o). For that, we just need to run |
| 100 | # ctfconvert/ctfmerge on the executable itself. |
| 101 | echo_run "$CTFCONVERT" -g -l $ctf_label "$target" |
| 102 | merge_objs="$target" |
| 103 | fi |
| 104 | |
| 105 | echo_run "$CTFMERGE" -g -l $ctf_label -o "$target" $merge_objs |
| 106 | ;; |
| 107 | |
| 108 | *) |
| 109 | echo "$0: Unknown mode '$mode'" >&2 |
| 110 | exit 1 |
| 111 | ;; |
| 112 | esac |