From 677e511a5d1a62b2d2693ca07e8e316f7b9fa61a Mon Sep 17 00:00:00 2001
From: Deniz Evrenci <denizevrenci@gmail.com>
Date: Tue, 30 Oct 2018 18:24:45 +0900
Subject: [PATCH] [C++] Pass C and C++ compilers to subprojects.

If a compiler set different from CC and CXX is used to build Aeron
and tests and benchmarks are enabled by using CMAKE_C_COMPILER and
CMAKE_CXX_COMPILER, Aeron source and the tests are built using
different compilers.
---
 CMakeLists.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9e7ba63f99..23a8bcfd4a 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -69,6 +69,7 @@ if(AERON_TESTS)
        URL ${CMAKE_CURRENT_SOURCE_DIR}/cppbuild/googletest-release-1.8.0.zip
        URL_MD5 adfafc8512ab65fd3cf7955ef0100ff5
        PREFIX "${AERON_THIRDPARTY_BINARY_DIR}/gmock"
+       CMAKE_ARGS -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER};-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
        BUILD_BYPRODUCTS "${AERON_THIRDPARTY_BINARY_DIR}/gmock/src/gmock-build/googlemock/${CMAKE_CFG_INTDIR}/${CMAKE_STATIC_LIBRARY_PREFIX}gmock${CMAKE_STATIC_LIBRARY_SUFFIX};${AERON_THIRDPARTY_BINARY_DIR}/gmock/src/gmock-build/googlemock/${CMAKE_CFG_INTDIR}/${CMAKE_STATIC_LIBRARY_PREFIX}gmock_main${CMAKE_STATIC_LIBRARY_SUFFIX}"
        INSTALL_COMMAND ""
    )
@@ -92,6 +93,7 @@ if(AERON_BUILD_SAMPLES)
         hdr_histogram
         URL ${CMAKE_CURRENT_SOURCE_DIR}/cppbuild/HdrHistogram_c.zip
         URL_MD5 8d1d6c6df1ee8342c180529a89568081
+        CMAKE_ARGS -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER};-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
         PREFIX "${AERON_THIRDPARTY_BINARY_DIR}/hdr_histogram"
         BUILD_BYPRODUCTS "${AERON_THIRDPARTY_BINARY_DIR}/hdr_histogram/src/hdr_histogram-build/src/${CMAKE_STATIC_LIBRARY_PREFIX}hdr_histogram_static${CMAKE_STATIC_LIBRARY_SUFFIX}"
         INSTALL_COMMAND ""
@@ -115,7 +117,8 @@ if(AERON_TESTS)
         google_benchmark
         URL ${CMAKE_CURRENT_SOURCE_DIR}/cppbuild/benchmark-1.4.0.tar.gz
         URL_MD5 ccfaf2cd93ae20191b94f730b945423e
-        CMAKE_ARGS -DBENCHMARK_ENABLE_GTEST_TESTS=OFF;-DBENCHMARK_ENABLE_ASSEMBLY_TESTS=OFF
+        CMAKE_ARGS -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER};-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER};
+            -DBENCHMARK_ENABLE_GTEST_TESTS=OFF;-DBENCHMARK_ENABLE_ASSEMBLY_TESTS=OFF
         PREFIX "${AERON_THIRDPARTY_BINARY_DIR}/google_benchmark"
         BUILD_BYPRODUCTS "${AERON_THIRDPARTY_BINARY_DIR}/google_benchmark/src/google_benchmark-build/src/${CMAKE_STATIC_LIBRARY_PREFIX}benchmark${CMAKE_STATIC_LIBRARY_SUFFIX}"
         INSTALL_COMMAND ""