The unpac monorepo manager self-hosting as a monorepo using unpac
configure: cache mmap MAP_STACK detection
Co-authored-by: David Allsopp <david.allsopp@metastack.com>
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aclocal.m4
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aclocal.m4
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AC_DEFUN([OCAML_MMAP_SUPPORTS_MAP_STACK], [
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AC_MSG_CHECKING([whether mmap supports MAP_STACK])
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM([[
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AC_CACHE_VAL([ocaml_cv_func_mmap_MAP_STACK],
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[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
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#include <sys/mman.h>
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#include <stdio.h>
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#include <stdlib.h>
···
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if (block == MAP_FAILED)
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return 1;
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]])],
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[has_mmap_map_stack=true
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AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])],
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[AC_MSG_RESULT([no assumed])])
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[ocaml_cv_func_mmap_MAP_STACK=yes],
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[ocaml_cv_func_mmap_MAP_STACK=no],
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[ocaml_cv_func_mmap_MAP_STACK=no])])
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AS_IF([test $cross_compiling = yes && \
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test "x$ocaml_cv_func_mmap_MAP_STACK" = xno],
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[AC_MSG_RESULT([no assumed])],
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[AC_MSG_RESULT([$ocaml_cv_func_mmap_MAP_STACK])])
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])
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AC_DEFUN([OCAML_MMAP_SUPPORTS_HUGE_PAGES], [
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configure
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configure
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mmap supports MAP_STACK" >&5
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printf %s "checking whether mmap supports MAP_STACK... " >&6; }
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if test ${ocaml_cv_func_mmap_MAP_STACK+y}
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then :
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printf %s "(cached) " >&6
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else $as_nop
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if test "$cross_compiling" = yes
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then :
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no assumed" >&5
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printf "%s\n" "no assumed" >&6; }
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ocaml_cv_func_mmap_MAP_STACK=no
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else $as_nop
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
···
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_ACEOF
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if ac_fn_c_try_run "$LINENO"
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then :
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has_mmap_map_stack=true
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
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printf "%s\n" "yes" >&6; }
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ocaml_cv_func_mmap_MAP_STACK=yes
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else $as_nop
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
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printf "%s\n" "no" >&6; }
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ocaml_cv_func_mmap_MAP_STACK=no
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fi
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rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
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conftest.$ac_objext conftest.beam conftest.$ac_ext
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fi
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fi
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if test x"$enable_mmap_map_stack" = "xyes"
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if test $cross_compiling = yes && \
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test "x$ocaml_cv_func_mmap_MAP_STACK" = xno
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then :
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if test x"$has_mmap_map_stack" = "xtrue"
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no assumed" >&5
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printf "%s\n" "no assumed" >&6; }
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else $as_nop
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ocaml_cv_func_mmap_MAP_STACK" >&5
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printf "%s\n" "$ocaml_cv_func_mmap_MAP_STACK" >&6; }
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fi
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if test "x$enable_mmap_map_stack" = xyes
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then :
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if test "x$ocaml_cv_func_mmap_MAP_STACK" = xyes
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then :
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case $target in #(
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*-freebsd*) :
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as_fn_error $? "mmap MAP_STACK not supported on FreeBSD" "$LINENO" 5 ;; #(
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as_fn_error $? "mmap MAP_STACK is not supported on FreeBSD" "$LINENO" 5 ;; #(
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*) :
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with_mmap_map_stack=true;
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printf "%s\n" "#define USE_MMAP_MAP_STACK 1" >>confdefs.h
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;;
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;;
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esac
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else $as_nop
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as_fn_error $? "mmap MAP_STACK requested but not found on $target" "$LINENO" 5
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fi
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-
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else $as_nop
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case $target in #(
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*-openbsd*) :
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with_mmap_map_stack=true;
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printf "%s\n" "#define USE_MMAP_MAP_STACK 1" >>confdefs.h
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: using MAP_STACK on OpenBSD due to stack checking" >&5
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printf "%s\n" "$as_me: using MAP_STACK on OpenBSD due to stack checking" >&6;} ;; #(
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case $target,$ocaml_cv_func_mmap_MAP_STACK,$enable_mmap_map_stack in #(
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*-openbsd*,no,*|*-openbsd-*,*,no) :
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as_fn_error $? "mmap MAP_STACK is required on OpenBSD" "$LINENO" 5 ;; #(
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*-openbsd*,*,*) :
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enable_mmap_map_stack=yes
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: Using MAP_STACK on OpenBSD due to stack checking" >&5
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printf "%s\n" "$as_me: Using MAP_STACK on OpenBSD due to stack checking" >&6;} ;; #(
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*) :
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with_mmap_map_stack=false ;;
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;;
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esac
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fi
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if test x"$ocaml_cv_func_mmap_MAP_STACK$enable_mmap_map_stack" = xyesyes
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then :
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printf "%s\n" "#define USE_MMAP_MAP_STACK 1" >>confdefs.h
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fi
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configure.ac
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configure.ac
···
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flat_float_array=true])
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OCAML_MMAP_SUPPORTS_MAP_STACK
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AS_IF([test x"$enable_mmap_map_stack" = "xyes"],
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[AS_IF([test x"$has_mmap_map_stack" = "xtrue"],
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AS_IF([test "x$enable_mmap_map_stack" = xyes],
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[AS_IF([test "x$ocaml_cv_func_mmap_MAP_STACK" = xyes],
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[AS_CASE([$target],
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[*-freebsd*],
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[AC_MSG_ERROR([mmap MAP_STACK not supported on FreeBSD])],
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[with_mmap_map_stack=true;
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AC_DEFINE([USE_MMAP_MAP_STACK], [1])])],
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[AC_MSG_ERROR([mmap MAP_STACK requested but not found on $target])])
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],
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[AS_CASE([$target],
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[*-openbsd*],
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[with_mmap_map_stack=true;
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AC_DEFINE([USE_MMAP_MAP_STACK], [1])
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AC_MSG_NOTICE([using MAP_STACK on OpenBSD due to stack checking])],
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[with_mmap_map_stack=false])
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])
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[AC_MSG_ERROR([mmap MAP_STACK is not supported on FreeBSD])])],
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[AC_MSG_ERROR([mmap MAP_STACK requested but not found on $target])])],
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[AS_CASE([$target,$ocaml_cv_func_mmap_MAP_STACK,$enable_mmap_map_stack],
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[*-openbsd*,no,*|*-openbsd-*,*,no],
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[AC_MSG_ERROR([mmap MAP_STACK is required on OpenBSD])],
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[*-openbsd*,*,*],
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[enable_mmap_map_stack=yes
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AC_MSG_NOTICE([Using MAP_STACK on OpenBSD due to stack checking])])])
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AS_IF([test x"$ocaml_cv_func_mmap_MAP_STACK$enable_mmap_map_stack" = xyesyes],
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[AC_DEFINE([USE_MMAP_MAP_STACK], [1], [Define to use mmap MAP_STACK.])])
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oc_native_compflags=''
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