Allow multi-word "install" command.
Autoconf can determine that the correct install command includes flags,
e.g., "/usr/bin/install -c". When using this as a command, we can't
enclose the value in double-quotes, as that makes some shells use the
whole expression as a filename:
# this is the value returned by autoconf and stored in CT_install
$ ins="/usr/bin/install -c"
# if we call it with quotes, the command is not found
$ "${ins}"
bash: /usr/bin/install -c: No such file or directory
# removing the quotes lets it work as expected
$ ${ins}
/usr/bin/install: missing file operand
Try `/usr/bin/install --help' for more information.
Signed-Off-By: Anthony Foiani <anthony.foiani@gmail.com>
1 Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/00_all_gcc-trampolinewarn.patch
2 This trivial patch causes gcc to emit a warning whenever
3 it generates a trampoline. These are otherwise hard to
4 locate. It is rigged to default ON - to have it default
5 to OFF remove the text 'Init(1)' from the common.opt
6 patch, leaving just 'Common Var(warn_trampolines)'.
7 Kevin F. Quinn <kevquinn@gentoo.org> 17 Jan 2006
9 diff -durN gcc-4.3.1.orig/gcc/builtins.c gcc-4.3.1/gcc/builtins.c
10 --- gcc-4.3.1.orig/gcc/builtins.c 2008-04-23 00:36:27.000000000 +0200
11 +++ gcc-4.3.1/gcc/builtins.c 2008-06-10 14:56:54.000000000 +0200
13 trampolines_created = 1;
14 INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
16 + if (warn_trampolines)
17 + warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");
22 diff -durN gcc-4.3.1.orig/gcc/common.opt gcc-4.3.1/gcc/common.opt
23 --- gcc-4.3.1.orig/gcc/common.opt 2008-01-22 15:11:44.000000000 +0100
24 +++ gcc-4.3.1/gcc/common.opt 2008-06-10 14:56:54.000000000 +0200
26 Common Var(warn_system_headers) Warning
27 Do not suppress warnings from system headers
30 +Common Var(warn_trampolines) Init(1)
31 +Warn whenever a trampoline is generated
34 Common Var(warn_uninitialized) Warning
35 Warn about uninitialized automatic variables