blob: 6d896c71b3792a4fe811379f99ced2ea8e670327 (
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diff --git a/Source/autotools/SetupCompilerFlags.m4 b/Source/autotools/SetupCompilerFlags.m4
index 2141818..c5c50b5 100644
--- a/Source/autotools/SetupCompilerFlags.m4
+++ b/Source/autotools/SetupCompilerFlags.m4
@@ -1,7 +1,7 @@
# Use C99 as the language standard for C code.
CFLAGS="$CFLAGS -pthread -std=c99"
# Use the C++11 standard. Do not warn about C++11 incompatibilities.
-CXXFLAGS="$CXXFLAGS -pthread -std=c++11 -Wno-c++11-compat"
+CXXFLAGS="$CXXFLAGS -pthread -std=c++20 -Wno-template-id-cdtor -Wno-implicit-fallthrough -Wno-deprecated-copy -Wno-deprecated-declarations -Wno-register"
# Clang requires suppression of unused arguments warnings.
if test "$c_compiler" = "clang"; then
@@ -46,13 +46,6 @@ fi
if test "$enable_optimizations" = "yes"; then
CXXFLAGS="$CXXFLAGS -O2"
CFLAGS="$CFLAGS -O2"
-
- if test "$c_compiler" = "gcc"; then
- CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
- fi
- if test "$cxx_compiler" = "g++"; then
- CXXFLAGS="$CXXFLAGS -D_FORTIFY_SOURCE=2"
- fi
else
CXXFLAGS="$CXXFLAGS -O0"
CFLAGS="$CFLAGS -O0"
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