These are the misleading error messages that this change prevents:
configure.ac:13: error: possibly undefined macro: AC_MSG_WARN
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
configure.ac:48: error: possibly undefined macro: AC_DEFINE
configure.ac:342: error: possibly undefined macro: AC_MSG_ERROR
configure.ac:608: error: possibly undefined macro: AC_MSG_NOTICE
Change-Id: I21bcc7715eeac0f3d0bcc60bba6801e6a895cdd0
Signed-off-by: R. Diez <rdiezmail-openocd@yahoo.de>
Reviewed-on: https://review.openocd.org/c/openocd/+/7035
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
m4_version_prereq([2.70],[],[AC_PROG_CC_C99])
AM_PROG_CC_C_O
AC_PROG_RANLIB
m4_version_prereq([2.70],[],[AC_PROG_CC_C99])
AM_PROG_CC_C_O
AC_PROG_RANLIB
+
+# If macro PKG_PROG_PKG_CONFIG is not available, Autoconf generates a misleading error message,
+# so check for existence first, and otherwise provide helpful advice.
+m4_ifndef([PKG_PROG_PKG_CONFIG], [m4_fatal(m4_normalize([
+ Macro PKG_PROG_PKG_CONFIG is not available.
+ It is usually defined in file pkg.m4 provided by package pkg-config.]))])
PKG_PROG_PKG_CONFIG([0.23])
dnl disable checks for C++, Fortran and GNU Java Compiler
PKG_PROG_PKG_CONFIG([0.23])
dnl disable checks for C++, Fortran and GNU Java Compiler