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configure.ac: Check for grep with AC_PROG_GREP 

Perhaps with a new version of autoconf, I began seeing:

| checking the name lister (/usr/bin/nm -B) interface... ./configure: line 6973: External.*some_variable: command not found
| BSD nm

This is because AC_PROG_NM expands to

	...
	if $GREP 'External.*some_variable' conftest.out > /dev/null; then
	    lt_cv_nm_interface="MS dumpbin"
	fi
	...

I'm not sure if it's a bug in AC_PROG_NM that it doesn't call
AC_PROG_GREP, but it's easy enough for us to do it.
This commit is contained in:
Matt Turner 2018-05-09 16:32:12 -07:00
parent 0ab266dc1b
commit 0097940223
1 changed files with 1 additions and 0 deletions
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@ -119,6 +119,7 @@ dnl other CC/CXX flags related help
AC_ARG_VAR([CXX11_CXXFLAGS], [Compiler flag to enable C++11 support (only needed if not
enabled by default and different from -std=c++11)])
AM_PROG_CC_C_O
AC_PROG_GREP
AC_PROG_NM
AM_PROG_AS
AX_CHECK_GNU_MAKE