don't use Bash-specific ${parameter/pattern/string} expansion

sysdeps/unix/make-syscalls.sh and sysdeps/unix/Makefile use GNU Bash's
${parameter/pattern/string} parameter expansion.  Non-Bash shells (e.g.
dash or BusyBox ash when built with CONFIG_ASH_BASH_COMPAT disabled)
don't support this expansion syntax.  So glibc will fail to build when
$(SHELL) expands to a path that isn't provided by Bash.

An example build failure:

    for dir in [...]; do \
      test -f $dir/syscalls.list && \
      { sysdirs='[...]' \
        asm_CPP='gcc -c    -I[...]   -D_LIBC_REENTRANT -include include/libc-symbols.h       -DASSEMBLER  -g -Wa,--noexecstack   -E -x assembler-with-cpp' \
        /bin/sh sysdeps/unix/make-syscalls.sh $dir || exit 1; }; \
      test $dir = sysdeps/unix && break; \
    done > [build-dir]/sysd-syscallsT
    sysdeps/unix/make-syscalls.sh: line 273: syntax error: bad substitution

This patch simply replaces the three instances of the Bash-only syntax
in these files with an echo and sed command substitution.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 19152d6..3594b32 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2013-09-11  P. J. McDermott  <pj@pehjota.net>
+
+	* sysdeps/unix/Makefile ($(objpfx)stub-syscalls.c): Don't use
+	${Bash-specific parameter/pattern/string} parameter expansion.
+	* sysdeps/unix/make-syscalls.sh: Likewise.
+
 2013-09-27  Kaz Kojima  <kkojima@rr.iij4u.or.jp>
 
 	* sysdeps/sh/stackguard-macros.h: New file.