1 AC_DEFUN([AC_PROG_CC_PIE], [
2 AC_CACHE_CHECK([whether ${CC-cc} accepts -fPIE], ac_cv_prog_cc_pie, [
3 echo 'void f(){}' > conftest.c
4 if test -z "`${CC-cc} -fPIE -pie -c conftest.c 2>&1`"; then
13 AC_DEFUN([AC_PATH_READLINE], [
14 AC_CHECK_HEADER(readline/readline.h,
15 [AC_CHECK_LIB(readline, main,
17 AC_SUBST(READLINE_LIBS, "-lreadline")
18 ], readline_found=no)],
22 AC_DEFUN([COMPILER_FLAGS], [
23 if (test "${CFLAGS}" = ""); then
24 CFLAGS="-Wall -O2 -D_FORTIFY_SOURCE=2"
26 if (test "$USE_MAINTAINER_MODE" = "yes"); then
27 CFLAGS="$CFLAGS -Werror -Wextra"
28 CFLAGS="$CFLAGS -Wno-unused-parameter"
29 CFLAGS="$CFLAGS -Wno-missing-field-initializers"
30 CFLAGS="$CFLAGS -Wdeclaration-after-statement"
31 CFLAGS="$CFLAGS -Wmissing-declarations"
32 CFLAGS="$CFLAGS -Wredundant-decls"
33 CFLAGS="$CFLAGS -Wcast-align"
34 CFLAGS="$CFLAGS -DG_DISABLE_DEPRECATED"