fixed yet another hardcoded uname invocation

[dnet]

Somehow I forgot to fix this, which lead to the weird combination that you could cross-compile liboprf on anything but Linux – as it ran uname on the machine building it, and if it was Linux, it tried using GCC-specific (?) switches that clang (used by Android NDK) did not like:

x86_64-linux-android21-clang  -Wall -Wextra -Werror -std=c11 -Wno-unused-variable -Wno-unknown-warning-option -Wno-unused-but-set-variable -Wno-unused-parameter -Wno-infinite-recursion -fpic -fwrapv -D_BSD_SOURCE -D_DEFAULT_SOURCE -DWITH_SODIUM -O2 -fstack-protector-strong -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fasynchronous-unwind-tables -fpic -Werror=format-security -Werror=implicit-function-declaration -ftrapv -Wl,--error-unresolved-symbols -Wl,-z,defs -Wl,-z,relro -Wl,-z,noexecstack -fcf-protection=full  -fstack-clash-protection -I../../../libsodium/src/libsodium/include -I../../../libsodium/src/libsodium/include/sodium -fPIC -Iinclude -I include/karmel -I include/karmel/minimal -c src/Noise_XK.c -o src/Noise_XK.o
clang: error: -Wl,--error-unresolved-symbols: 'linker' input unused [-Werror,-Wunused-command-line-argument]
clang: error: -Wl,-z,defs: 'linker' input unused [-Werror,-Wunused-command-line-argument]
clang: error: -Wl,-z,relro: 'linker' input unused [-Werror,-Wunused-command-line-argument]
clang: error: -Wl,-z,noexecstack: 'linker' input unused [-Werror,-Wunused-command-line-argument]
make: *** [makefile:85: src/Noise_XK.o] Error 1

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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