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AC_DEFUN([AC_PROG_CC_PIE], [
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AC_CACHE_CHECK([whether ${CC-cc} accepts -fPIE], ac_cv_prog_cc_pie, [
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echo 'void f(){}' > conftest.c
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if test -z "`${CC-cc} -fPIE -pie -c conftest.c 2>&1`"; then
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ac_cv_prog_cc_pie=yes
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else
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ac_cv_prog_cc_pie=no
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fi
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rm -rf conftest*
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])
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])
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AC_DEFUN([COMPILER_FLAGS], [
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if (test "${CFLAGS}" = ""); then
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CFLAGS="-Wall -O2 -fsigned-char -fno-exceptions"
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CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
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fi
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if (test "$USE_MAINTAINER_MODE" = "yes"); then
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CFLAGS="$CFLAGS -Werror -Wextra"
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CFLAGS="$CFLAGS -Wno-unused-parameter"
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CFLAGS="$CFLAGS -Wno-missing-field-initializers"
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CFLAGS="$CFLAGS -Wdeclaration-after-statement"
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CFLAGS="$CFLAGS -Wmissing-declarations"
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CFLAGS="$CFLAGS -Wredundant-decls"
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CFLAGS="$CFLAGS -Wcast-align"
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CFLAGS="$CFLAGS -Wno-format-truncation"
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CFLAGS="$CFLAGS -DG_DISABLE_DEPRECATED"
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fi
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])
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