From 874d9605aa9cd028aed149c2dd1bb410856477fb Mon Sep 17 00:00:00 2001
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From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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Date: Sun, 21 Jun 2020 23:28:37 +0200
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Subject: [PATCH] autotools: make example build optional
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This patch makes example build optional for autotools build system.
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In order to keep the former behavior, example build is enabled by default.
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Signed-off-by: Samuel Martin <s.martin49@gmail.com>
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[Retrieved (and slightly updated to remove CMakeLists.txt) from:
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https://git.buildroot.net/buildroot/tree/package/libnfc/0001-build-systems-make-example-build-optional.patch]
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Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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[Retrieved from:
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https://github.com/nfc-tools/libnfc/commit/874d9605aa9cd028aed149c2dd1bb410856477fb]
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---
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Makefile.am | 8 +++++++-
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configure.ac | 11 +++++++++++
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2 files changed, 18 insertions(+), 1 deletion(-)
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diff --git a/Makefile.am b/Makefile.am
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index d2f6fc8e..516ebee2 100644
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--- a/Makefile.am
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+++ b/Makefile.am
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@@ -2,7 +2,13 @@ ACLOCAL_AMFLAGS = -I m4
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AM_CFLAGS = $(LIBNFC_CFLAGS)
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-SUBDIRS = libnfc utils examples include contrib cmake test
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+SUBDIRS = libnfc utils
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+
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+if EXAMPLE_ENABLED
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+SUBDIRS += examples
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+endif
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+
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+SUBDIRS += include contrib cmake test
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pkgconfigdir = $(libdir)/pkgconfig
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pkgconfig_DATA = libnfc.pc
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diff --git a/configure.ac b/configure.ac
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index 280a6d08..46b65d33 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -157,6 +157,14 @@ then
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fi
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AM_CONDITIONAL(DOC_ENABLED, [test x"$enable_doc" = xyes])
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+# Example build (default: yes)
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+AC_ARG_ENABLE([example],AS_HELP_STRING([--enable-example],[Enable example build.]),[enable_example=$enableval],[enable_example="yes"])
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+
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+AC_MSG_CHECKING(for example build)
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+AC_MSG_RESULT($enable_example)
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+
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+AM_CONDITIONAL(EXAMPLE_ENABLED, [test x"$enable_example" = xyes])
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+
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# Dependencies
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PKG_CONFIG_REQUIRES=""
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@@ -175,7 +183,10 @@ if test x$ac_cv_with_cutter = xyes -a x$ac_cv_use_cutter = xno; then
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fi
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AM_CONDITIONAL([WITH_CUTTER], [test "$ac_cv_use_cutter" != "no"])
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+if test x"$enable_example" = "xyes"
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+then
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AC_CHECK_READLINE
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+fi
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# Help us to write great code ;-)
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CFLAGS="$CFLAGS -Wall -pedantic -Wextra"
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