125 lines
3.1 KiB
Plaintext
125 lines
3.1 KiB
Plaintext
# Process this file with autoconf to produce a configure script.
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# Copyright (C) 2002 Yoshinori K. Okuji <okuji@enbug.org>
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#
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# This configure.ac is free software; the author
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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# PARTICULAR PURPOSE.
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AC_INIT(PUPA, 0.6, [okuji@enbug.org])
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AC_PREREQ(2.53)
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AC_CONFIG_SRCDIR([include/pupa/dl.h])
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AC_CONFIG_HEADER([config.h])
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# Checks for build and host systems.
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AC_CANONICAL_BUILD
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AC_CANONICAL_HOST
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case "$host_cpu" in
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i[[3456]]86) host_cpu=i386 ;;
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*) AC_MSG_ERROR([unsupported CPU type]) ;;
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esac
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case "$host_cpu"-"$host_vendor" in
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i386-*) host_vendor=pc ;;
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*) AC_MSG_ERROR([unsupported machine type]) ;;
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esac
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AC_SUBST(host_cpu)
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AC_SUBST(host_vendor)
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# Checks for programs.
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if test "x$CFLAGS" = x; then
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default_CFLAGS=yes
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fi
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AC_PROG_CC
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# Must be GCC.
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test "x$GCC" = xyes || AC_MSG_ERROR([GCC is required])
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if test "x$default_CFLAGS" = xyes; then
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# debug flags.
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tmp_CFLAGS="-Wall -W -g"
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# optimization flags.
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AC_CACHE_CHECK([whether optimization for size works], size_flag, [
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CFLAGS=-Os
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AC_TRY_COMPILE(, , size_flag=yes, size_flag=no)
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])
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if test "x$size_flag" = xyes; then
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tmp_CFLAGS="$tmp_CFLAGS -Os"
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else
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tmp_CFLAGS="$tmp_CFLAGS -O2 -fno-strength-reduce -fno-unroll-loops"
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fi
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# Force no alignment to save space on i386.
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if test "x$host_cpu" = xi386; then
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AC_CACHE_CHECK([whether -falign-loops works], [falign_loop_flag], [
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CFLAGS="-falign-loops=1"
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AC_TRY_COMPILE(, , [falign_loop_flag=yes], [falign_loop_flag=no])
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])
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if test "x$falign_loop_flag" = xyes; then
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tmp_CFLAGS="$tmp_CFLAGS -falign-jumps=1 -falign-loops=1 -falign-functions=1"
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else
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tmp_CFLAGS="$tmp_CFLAGS -malign-jumps=1 -malign-loops=1 -malign-functions=1"
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fi
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fi
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CFLAGS="$tmp_CFLAGS"
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fi
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AC_SUBST(CFLAGS)
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# Defined in aclocal.m4.
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pupa_ASM_USCORE
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pupa_CHECK_START_SYMBOL
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pupa_CHECK_BSS_START_SYMBOL
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pupa_CHECK_END_SYMBOL
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if test "x$host_cpu" = xi386; then
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pupa_I386_ASM_PREFIX_REQUIREMENT
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pupa_I386_ASM_ADDR32
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pupa_I386_ASM_ABSOLUTE_WITHOUT_ASTERISK
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fi
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AC_PROG_INSTALL
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AC_PROG_MAKE_SET
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AC_CHECK_TOOL(OBJCOPY, objcopy)
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pupa_PROG_OBJCOPY_ABSOLUTE
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AC_CHECK_TOOL(STRIP, strip)
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AC_CHECK_TOOL(NM, nm)
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# This is not a "must".
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AC_PATH_PROG(RUBY, ruby)
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# For cross-compiling.
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if test "x$build" = "x$host"; then
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BUILD_CC="$CC"
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AC_SUBST(BUILD_CC)
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else
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AC_CHECK_PROGS(BUILD_CC, [gcc egcs cc],
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[AC_MSG_ERROR([none of gcc, egcs and cc is found. set BUILD_CC manually.])])
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fi
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# Test the C compiler for the build environment.
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pupa_tmp_CC="$CC"
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CC="$BUILD_CC"
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AC_C_BIGENDIAN
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AC_CHECK_SIZEOF(void *)
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AC_CHECK_SIZEOF(long)
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CC="$pupa_tmp_CC"
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# Output files.
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AC_CONFIG_LINKS([include/pupa/cpu:include/pupa/$host_cpu
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include/pupa/machine:include/pupa/$host_cpu/$host_vendor])
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AC_CONFIG_FILES([Makefile])
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AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h])
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AC_OUTPUT
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