configure.ac: remove usage of obsolete Automake macro AM_PROG_CC_C_O
Macro AM_PROG_CC_C_O has been obsolete since Automake 1.14, released in June 2013 (12 years ago). It used to check whether the C compiler supports the -c and -o options, but that is now included in AC_PROG_CC. Increase the minimum required Automake version to 1.14 accordingly. Also remove the "not a GNU package" comment, which does not really make sense. Change-Id: I987ba8686721c7f36fba81e100f1c3ddf77f636d Signed-off-by: R. Diez <rdiez-2006@rd10.de> Reviewed-on: https://review.openocd.org/c/openocd/+/8942 Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com> Tested-by: jenkins
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@@ -24,7 +24,6 @@ AC_LANG([C])
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AC_PROG_CC
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# autoconf 2.70 obsoletes AC_PROG_CC_C99 and includes it in AC_PROG_CC
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m4_version_prereq([2.70],[],[AC_PROG_CC_C99])
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AM_PROG_CC_C_O
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AC_PROG_RANLIB
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# If macro PKG_PROG_PKG_CONFIG is not available, Autoconf generates a misleading error message,
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