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The CHIL engine from OpenSSL
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configure: add the OpenSSL includes to CPPFLAGS #10

Closed mkauf closed 5 years ago

mkauf commented 5 years ago

CPPFLAGS (preprocessor flags) are also used when compiling C files.

This fixes a configure warning when OpenSSL is in a custom directory:

checking openssl/engine.h presence... no
configure: WARNING: openssl/engine.h: accepted by the compiler, rejected by the preprocessor!
configure: WARNING: openssl/engine.h: proceeding with the compiler's result