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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi, there, I am using https://github.com/riscv-collab/riscv-gnu-toolchain to build a R= ISCV toolchain. I redirected the newlib link in riscv-gnu-toolchain repo to= a local customized version by `--with-newlib-src` configure option. However, when checking `getentropy` in build-gcc-newlib-stage2 step, the ch= ecking command is not expected. In config.log we can see the checking command is: ###################### configure:75532: checking for getentropy configure:75551: /local/jerry/llvm-test-suite/Phoenix/working/riscvgnutool= chain/build/build-gcc-newlib-stage2/./gcc/xgcc -shared-libgcc -B/local/jerr= y/llvm-test-suite/Phoenix/working/riscvgnutoolchain/build/build-gcc-newlib-= stage2/./gcc -nostdinc++ -L/local/jerry/llvm-test-suite/Phoenix/working/ris= cvgnutoolchain/build/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-= v3/src -L/local/jerry/llvm-test-suite/Phoenix/working/riscvgnutoolchain/bui= ld/build-gcc-newlib-stage2/riscv64-unknown-elf/libstdc++-v3/src/.libs -L/lo= cal/jerry/llvm-test-suite/Phoenix/working/riscvgnutoolchain/build/build-gcc= -newlib-stage2/riscv64-unknown-elf/libstdc++-v3/libsupc++/.libs -B/local/je= rry/llvm-test-suite/Phoenix/lt-release/riscv64-unknown-elf/bin/ -B/local/je= rry/llvm-test-suite/Phoenix/lt-release/riscv64-unknown-elf/lib/ -isystem /l= ocal/jerry/llvm-test-suite/Phoenix/lt-release/riscv64-unknown-elf/include -= isystem /local/jerry/llvm-test-suite/Phoenix/lt-release/riscv64-unknown-elf= /sys-include -c -Os -mcmodel=3Dmedlow conftest.cpp >&5 configure:75551: $? =3D 0 configure:75583: result: yes ####################### In fact, I expect the right command is without `-c` option. And the right c= ompile command without `-c` option should fails with message `undefined ref= erence to `getentropy'`. The expected checking result is `no`. I wanna ask how can I remove the `-c` option and which option controls it. Could anyone help me? Thanks! BR, Jerry --_000_IA1PR20MB49569425E7CEC9E479BBA033F754AIA1PR20MB4956namp_--