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configure.ac: verify macros in m4/ are being replaced (Thanks sur5r) (#2571) 

See the comment for more details, and see the motivating blog post:
https://blogs.noname-ev.de/sur5r/index.php?/archives/7-Another-instance-of-AC_DEFINE-being-undefined.html
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Michael Stapelberg 2016-11-19 14:45:22 -08:00 committed by GitHub
parent 2ff3d9d651
commit aa20c416c3
1 changed files with 6 additions and 0 deletions
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6
configure.ac
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@ -15,6 +15,12 @@ AC_CONFIG_SRCDIR([libi3/ipc_recv_message.c])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])
dnl Verify macros defined in m4/ such as AX_SANITIZERS are not present in the
dnl output, i.e. are replaced as expected. This line results in a better error
dnl message when using aclocal < 1.13 (which does not understand
dnl AC_CONFIG_MACRO_DIR) without passing the -I m4 parameter.
m4_pattern_forbid([AX_SANITIZERS])
# Verify we are using GNU make because we use '%'-style pattern rules in
# Makefile.am, which are a GNU make extension. Pull requests to replace
# '%'-style pattern rules with a more portable alternative are welcome.