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@@ -0,0 +1,45 @@
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+From 194b3836c87f77aca34581656ff99da49813d8c3 Mon Sep 17 00:00:00 2001
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+From: Asaf Kahlon <asafka7@gmail.com>
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+Date: Fri, 13 Apr 2018 11:56:46 +0300
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+Subject: [PATCH] configure.ac: search for dladdr only on libunwind
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+
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+The original configure.ac tries to check for dladdr, but it actually needs
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+it only in case we have libunwind (which has a another section and checks for it
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+too).
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+This can fail the build on systems without dynamic linking support.
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+Therefore, the dladdr check has to be performed only when checking libunwind.
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+
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+Signed-off-by: Asaf Kahlon <asafka7@gmail.com>
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+Upstream-status: https://github.com/zeromq/libzmq/commit/c971445025535b9f989ab0b78f5ddd1c026f1878
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+---
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+ configure.ac | 7 +------
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+ 1 file changed, 1 insertion(+), 6 deletions(-)
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+
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+diff --git a/configure.ac b/configure.ac
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+index 216b2bc4..0858a6c1 100644
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+--- a/configure.ac
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++++ b/configure.ac
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+@@ -174,11 +174,6 @@ case "${host_os}" in
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+ AC_DEFINE(ZMQ_HAVE_LINUX, 1, [Have Linux OS])
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+ libzmq_on_linux="yes"
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+
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+- # dladdr/dlopen is in libdl on glibc
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+- AC_SEARCH_LIBS([dladdr], [dl dld], [], [
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+- AC_MSG_ERROR([unable to find the dladdr() function])
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+- ])
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+-
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+ if test "x$libzmq_tipc_support" = "xyes"; then
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+ AC_DEFINE(ZMQ_HAVE_TIPC, 1, [Have TIPC support])
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+ fi
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+@@ -783,7 +778,7 @@ if test "x$enable_libunwind" != "xno"; then
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+ AC_DEFINE(HAVE_LIBUNWIND, 1, [The libunwind library is to be used])
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+ AC_SUBST([LIBUNWIND_CFLAGS])
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+ AC_SUBST([LIBUNWIND_LIBS])
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+- AC_CHECK_LIB([dl], [dladdr])
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++ AC_SEARCH_LIBS([dladdr], [dl dld])
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+ ],
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+ [
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+ if test "x$enable_libunwind" = "xyes"; then
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+--
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+2.17.0
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+
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Asaf Kahlon