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-rw-r--r--cmake/CompilerWarnings.cmake10
1 files changed, 6 insertions, 4 deletions
diff --git a/cmake/CompilerWarnings.cmake b/cmake/CompilerWarnings.cmake
index fe6735c35..629bb6ee1 100644
--- a/cmake/CompilerWarnings.cmake
+++ b/cmake/CompilerWarnings.cmake
@@ -17,6 +17,9 @@ CHECK_C_COMPILER_FLAG(-Wnull-dereference SUPPORT_WNULL_DEREFERENCE)
CHECK_C_COMPILER_FLAG(-Wduplicated-cond SUPPORT_WDUPLICATED_COND)
# GCC 7 specific
CHECK_C_COMPILER_FLAG(-Wimplicit-fallthrough SUPPORT_WIMPLICIT_FALLTHROUGH)
+# Special check for deprecated declarations, as since OpenSSL 3.0 they
+# just poison output for no good reason
+CHECK_C_COMPILER_FLAG(-Wdeprecated-declarations SUPPORT_WDEPRECATED_DECLARATIONS)
IF(SUPPORT_WEXTRA)
ADD_COMPILE_OPTIONS("-Wextra")
@@ -76,7 +79,6 @@ IF(SUPPORT_WMISSING_FORMAT_ATTRIBUTE)
ADD_COMPILE_OPTIONS("-Wmissing-format-attribute")
ENDIF(SUPPORT_WMISSING_FORMAT_ATTRIBUTE)
-CHECK_C_COMPILER_FLAG(-fPIC SUPPORT_FPIC)
-IF(SUPPORT_FPIC)
- ADD_COMPILE_OPTIONS("-fPIC")
-ENDIF(SUPPORT_FPIC)
+IF(SUPPORT_WDEPRECATED_DECLARATIONS)
+ ADD_COMPILE_OPTIONS("-Wno-deprecated-declarations")
+ENDIF()