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@@ -0,0 +1,43 @@
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+From 225218e52ce387dc011431842ef6f45aeac74d33 Mon Sep 17 00:00:00 2001
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+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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+Date: Thu, 26 Mar 2020 21:11:42 +0100
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+Subject: [PATCH] src/CMakeLists.txt: fix static build with openssl
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+
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+As usual, cmake is unable to correctly handle static dependencies by its
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+own and as a result a static build with openssl will fail on:
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+
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+/home/naourr/work/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/8.3.0/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: /home/naourr/work/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/libcrypto.a(c_zlib.o): in function `zlib_stateful_expand_block':
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+/home/naourr/work/instance-0/output-1/build/libopenssl-1.1.1d/crypto/comp/c_zlib.c:201: undefined reference to `inflate'
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+
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+To fix this, use pkg-config to retrieve openssl dependencies such as -lz
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+or -latomic and fallback on existing mechanism
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+
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+Fixes:
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+ - http://autobuild.buildroot.org/results/6105b69d8598f0033044a26f53a768e2d4b2915e
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+
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+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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+[Upstream status: https://github.com/zhaojh329/rtty/pull/64]
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+---
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+ src/CMakeLists.txt | 6 +++++-
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+ 1 file changed, 5 insertions(+), 1 deletion(-)
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+
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+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
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+index bb65d43..b192606 100644
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+--- a/src/CMakeLists.txt
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++++ b/src/CMakeLists.txt
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+@@ -29,7 +29,11 @@ set(RTTY_HAVE_MBEDTLS_CONFIG 0)
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+ if(NOT RTTY_SSL_SUPPORT)
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+ set(RTTY_SSL_SUPPORT_CONFIG 0)
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+ else()
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+- find_package(OpenSSL)
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++ find_package(PkgConfig QUIET)
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++ pkg_check_modules(OPENSSL QUIET openssl)
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++ if (NOT OPENSSL_FOUND)
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++ find_package(OpenSSL)
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++ endif()
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+ find_package(WolfSSL)
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+ find_package(MbedTLS)
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+
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+--
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+2.25.1
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+
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