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Fix missing AC_PROG_SED on older Autoconfs

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For pre-2.59b Autoconfs, AC_PROG_SED is not available [1]; on such
systems, avoid calling AC_PROG_SED, while providing a sensible SED.

This aids backporting to Autoconf 2.59.

[1] http://lists.gnu.org/archive/html/autotools-announce/2004-08/msg00002.html
This commit is contained in:
Tay Ray Chuan 2013-01-15 12:52:08 +08:00
parent ca80ea61b5
commit 9ab2b3f749
1 changed files with 6 additions and 1 deletions
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7
configure.in
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@ -35,11 +35,16 @@ esac
dnl Checks for programs. dnl Checks for programs.
AC_PROG_CC AC_PROG_CC
AM_PROG_CC_C_O AM_PROG_CC_C_O
AC_PROG_SED
AC_PROG_INSTALL AC_PROG_INSTALL
AC_PROG_LN_S AC_PROG_LN_S
AC_PROG_MKDIR_P AC_PROG_MKDIR_P
# AC_PROG_SED is only available in Autoconf >= 2.59b; workaround for older
# versions
ifdef([AC_PROG_SED], [AC_PROG_SED], [
AC_CHECK_PROGS(SED, [gsed sed])
])
AC_PROG_GCC_TRADITIONAL AC_PROG_GCC_TRADITIONAL
# We need to test for at least gcc 2.95 here, because older versions don't # We need to test for at least gcc 2.95 here, because older versions don't