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configure.ac: Add AC_CANONICAL_SYSTEM macro. 

In order to determine the target OS when cross-compiling libsigrok
we need autotools to set the 'target_os' variable. This macro
determines the system type and sets output variables to the names
of the canonical system types.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Bartosz Golaszewski 2015-02-09 18:31:09 +01:00 committed by Uwe Hermann
parent 187cfc604e
commit 3cdff6cd2d
1 changed files with 3 additions and 0 deletions
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3
configure.ac
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@ -33,6 +33,9 @@ AC_CONFIG_HEADER([config.h])
AC_CONFIG_MACRO_DIR([autostuff])
AC_CONFIG_AUX_DIR([autostuff])
# We require this to know the target settings if we're cross-compiling.
AC_CANONICAL_SYSTEM
# We require at least automake 1.11 (needed for 'silent rules').
AM_INIT_AUTOMAKE([1.11 -Wall -Werror subdir-objects check-news color-tests])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])