build-sys: do not use some compile flags by default

diff --git a/configure.ac b/configure.ac
index 3de639b..7842a6d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -108,11 +108,8 @@ CC_CHECK_CFLAGS_APPEND([ \
                        -Wchar-subscripts \
                        -Wtype-limits \
                        -Wuninitialized \
-                       -Wp,-D_FORTIFY_SOURCE=2 \
-                       -ffast-math \
                        -fno-common \
                        -fdiagnostics-show-option \
-                       -fno-strict-aliasing \
                        -fvisibility=hidden \
                        -ffunction-sections \
                        -fdata-sections \