Discussion:
host-cpu-c-abi: avoid use of 'grep -E' on OpenIndiana
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Bruno Haible
2018-02-03 11:53:11 UTC
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On OpenIndiana, I'm seeing this configure output:

checking whether C symbols are prefixed with underscore at the linker level... grep: illegal option -- E
Usage: grep [-c|-l|-q] [-r|-R] -hHbnsviw pattern file . . .
no

This fixes it.


2018-02-03 Bruno Haible <***@clisp.org>

host-cpu-c-abi: Avoid use of 'grep -E' on OpenIndiana.
* m4/asm-underscore.m4 (gl_ASM_SYMBOL_PREFIX): Require AC_PROG_EGREP,
and use $EGREP instead of 'grep -E'.
* m4/host-cpu-c-abi.m4 (gl_HOST_CPU_C_ABI): Use 'grep' instead of
'grep -E'.

diff --git a/m4/asm-underscore.m4 b/m4/asm-underscore.m4
index cc92534..58a5299 100644
--- a/m4/asm-underscore.m4
+++ b/m4/asm-underscore.m4
@@ -1,4 +1,4 @@
-# asm-underscore.m4 serial 3
+# asm-underscore.m4 serial 4
dnl Copyright (C) 2010-2018 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -14,6 +14,7 @@ dnl From Bruno Haible. Based on as-underscore.m4 in GNU clisp.

AC_DEFUN([gl_ASM_SYMBOL_PREFIX],
[
+ AC_REQUIRE([AC_PROG_EGREP])
dnl We don't use GCC's __USER_LABEL_PREFIX__ here, because
dnl 1. It works only for GCC.
dnl 2. It is incorrectly defined on some platforms, in some GCC versions.
@@ -29,7 +30,7 @@ int foo(void) { return 0; }
EOF
# Look for the assembly language name in the .s file.
AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $gl_c_asm_opt conftest.c) >/dev/null 2>&1
- if LC_ALL=C grep -E '(^|[[^a-zA-Z0-9_]])_foo([[^a-zA-Z0-9_]]|$)' conftest.$gl_asmext >/dev/null; then
+ if LC_ALL=C $EGREP '(^|[[^a-zA-Z0-9_]])_foo([[^a-zA-Z0-9_]]|$)' conftest.$gl_asmext >/dev/null; then
gl_cv_prog_as_underscore=yes
else
gl_cv_prog_as_underscore=no
diff --git a/m4/host-cpu-c-abi.m4 b/m4/host-cpu-c-abi.m4
index dd7c523..a467514 100644
--- a/m4/host-cpu-c-abi.m4
+++ b/m4/host-cpu-c-abi.m4
@@ -1,4 +1,4 @@
-# host-cpu-c-abi.m4 serial 8
+# host-cpu-c-abi.m4 serial 9
dnl Copyright (C) 2002-2018 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -135,7 +135,7 @@ changequote([,])dnl
echo 'double ddd; void func (double dd) { ddd = dd; }' > conftest.c
# Look for a reference to the register d0 in the .s file.
AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $gl_c_asm_opt conftest.c) >/dev/null 2>&1
- if LC_ALL=C grep -E 'd0,' conftest.$gl_asmext >/dev/null; then
+ if LC_ALL=C grep 'd0,' conftest.$gl_asmext >/dev/null; then
gl_cv_host_cpu_c_abi=armhf
else
gl_cv_host_cpu_c_abi=arm

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