We encountered a minifi-cpp build error on a self-hosted image:
[snip]
/build/tmp-glibc/work/corei7-64-wrs-linux/minifi-cpp/0.7.0-r0/recipe-sysroot-native/usr/bin/x86_64-wrs-linux/x86_64-wrs-linux-ranlib:
thirdparty/civetweb-1.10/src/libcivetweb-cpp.a(CivetServer.cpp.o): plugin needed to handle lto object
/build/tmp-glibc/work/corei7-64-wrs-linux/minifi-cpp/0.7.0-r0/recipe-sysroot-native/usr/bin/x86_64-wrs-linux/x86_64-wrs-linux-ranlib:
thirdparty/civetweb-1.10/src/libcivetweb.a(civetweb.c.o): plugin needed to handle lto object
[snip]
/build/tmp-glibc/work/corei7-64-wrs-linux/minifi-cpp/0.7.0-r0/recipe-sysroot-native/usr/bin/x86_64-wrs-linux/../../libexec/x86_64-wrs-linux/gcc/x86_64-wrs-linux/10.2.0/ld: DWARF error: could not find variable specification at offset c960f
/build/tmp-glibc/work/corei7-64-wrs-linux/minifi-cpp/0.7.0-r0/recipe-sysroot-native/usr/bin/x86_64-wrs-linux/../../libexec/x86_64-wrs-linux/gcc/x86_64-wrs-linux/10.2.0/ld: DWARF error: could not find variable specification at offset c961d
[snip]
extensions/civetweb/libminifi-civet-extensions.a(ListenHTTP.cpp.o):
in function `org::apache::nifi::minifi::processors::ListenHTTP::WriteCallback::process(std::shared_ptr<org::apache::nifi::minifi::io::BaseStream>)':
/usr/src/debug/minifi-cpp/0.7.0-r0/git/extensions/civetweb/processors/ListenHTTP.cpp:464: undefined reference to `mg_read'
[snip]
When using GCC's link-time optimization with static linked libraries, we
should use gcc-ar and gcc-ranlib to create the static libraries. By
default, it will search gcc-ar and gcc-ranlib in the system. But if the
gcc-ranlib is not found, it will use ranlib instead which causes this
issue.
Specify GCC_AR and GCC_RANLIB in EXTRA_OECMAKE to make sure it can find
the correct gcc-ar/gcc-ranlib.
Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
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