216 lines
5.0 KiB
Plaintext
216 lines
5.0 KiB
Plaintext
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dnl Autoconf configure script for Cygwin.
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dnl Copyright 1996, 1997, 1998, 2000 Cygnus Solutions.
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dnl
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dnl This file is part of Cygwin.
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dnl
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dnl This software is a copyrighted work licensed under the terms of the
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dnl Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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dnl details.
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dnl
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dnl Process this file with autoconf to produce a configure script.
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AC_PREREQ(2.12)dnl
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AC_INIT(init.cc)
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AC_CONFIG_HEADER(config.h)
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AC_PROG_INSTALL
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dnl FIXME: We temporarily define our own version of AC_PROG_CC. This is
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dnl copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
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dnl are probably using a cross compiler, which will not be able to fully
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dnl link an executable. This should really be fixed in autoconf
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dnl itself.
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AC_DEFUN(LIB_AC_PROG_CC,
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[AC_BEFORE([$0], [AC_PROG_CPP])dnl
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AC_CHECK_TOOL(CC, gcc, gcc)
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if test -z "$CC"; then
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AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
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test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
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fi
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AC_PROG_CC_GNU
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if test $ac_cv_prog_gcc = yes; then
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GCC=yes
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dnl Check whether -g works, even if CFLAGS is set, in case the package
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dnl plays around with CFLAGS (such as to build both debugging and
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dnl normal versions of a library), tasteless as that idea is.
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ac_test_CFLAGS="${CFLAGS+set}"
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS=
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AC_PROG_CC_G
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if test "$ac_test_CFLAGS" = set; then
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CFLAGS="$ac_save_CFLAGS"
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elif test $ac_cv_prog_cc_g = yes; then
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CFLAGS="-g -O2"
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else
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CFLAGS="-O2"
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fi
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if test "$ac_test_CXXFLAGS" != set; then
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CXXFLAGS='$(CFLAGS)'
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fi
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else
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GCC=
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test "${CFLAGS+set}" = set || CFLAGS="-g"
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fi
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])
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AC_CANONICAL_SYSTEM
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LIB_AC_PROG_CC
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AC_CHECK_TOOL(AR, ar, ar)
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AC_SUBST(AR)
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AC_CHECK_TOOL(AS, as, as)
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AC_SUBST(AS)
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AC_CHECK_TOOL(RANLIB, ranlib, ranlib)
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AC_SUBST(RANLIB)
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AC_CHECK_TOOL(LD, ld, ld)
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AC_SUBST(LD)
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AC_CHECK_TOOL(DLLTOOL, dlltool, dlltool)
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AC_SUBST(DLLTOOL)
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AC_CHECK_TOOL(WINDRES, windres, windres)
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AC_SUBST(WINDRES)
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AC_ALLOCA
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AC_CONFIG_SUBDIRS(utils doc)
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AC_PROG_MAKE_SET
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dnl check whether gcc supports __builtin_memset.
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# Test for builtin mem* functions.
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([
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#include <string.h>
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void foo(char *s, int c, size_t n)
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{
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__builtin_memset(s, c, n);
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}
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], [ ],
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use_builtin_memset=yes, use_builtin_memset=no)
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if test $use_builtin_memset = "yes"; then
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AC_DEFINE(HAVE_BUILTIN_MEMSET)
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fi
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AC_LANG_RESTORE
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dnl set default mt safeness and then process the options.
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mt_safe_val=1
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MT_SAFE=yes
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PTH_ALLOW=''
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AC_ARG_ENABLE(threadsafe,
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[ --enable-threadsafe=[runtime] Build a cygwin DLL which is thread safe],
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[case "${enableval}" in
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yes)
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dnl default.
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;;
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runtime)
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mt_safe_val=2
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MT_SAFE=yes
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;;
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no)
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mt_safe_val=0
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MT_SAFE=no
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PTH_ALLOW=';'
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;;
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esac
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])
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AC_ARG_ENABLE(extra-threadsafe-checking,
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[ --enable-extra-threadsafe-checking Build a cygwin DLL which is thread safe with extra consistency checking],
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[case "${enableval}" in
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yes)
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mt_safe_val=1
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MT_SAFE=yes
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AC_DEFINE(_CYG_THREAD_FAILSAFE)
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;;
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no)
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dnl Don't do anything here to avoid overriding --enable-threadsafe.
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;;
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esac
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])
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if test "$MT_SAFE" = "yes"; then
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AC_DEFINE_UNQUOTED(_MT_SAFE,$mt_safe_val)
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fi
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dnl Makefile uses MT_SAFE, so we subst as well as defining it.
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AC_SUBST(MT_SAFE)
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AC_SUBST(PTH_ALLOW)
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AC_ARG_ENABLE(debugging,
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[ --enable-debugging Build a cygwin DLL which has more consistency checking for debugging],
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[case "${enableval}" in
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yes) AC_DEFINE(DEBUGGING) ;;
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no) ;;
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esac
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])
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dnl The only time we might want to transform the install names
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dnl is for unix x cygwin. Otherwise we don't. For now we don't
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dnl transform names.
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dnl if test "x$cross_compiling" = "xno" -a ; then
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dnl if test "x$program_transform_name" = "xs,x,x,"; then
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dnl program_transform_name=""
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dnl fi
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dnl if test "x$program_transform_name" = "x"; then
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dnl program_transform_name="s,^,$target_alias-,"
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dnl else
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dnl program_transform_name="$program_transform_name -e s,^,$target_alias-,"
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dnl fi
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dnl fi
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dnl
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dnl If newlib is part of build tree, always set EXE_LDFLAGS to point to
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dnl it; this is important in cases where the installed newlib is perhaps
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dnl not compatible. Check and warn for installed newlib only if it's not
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dnl part of the build tree.
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dnl
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AC_MSG_CHECKING([if newlib is part of the build tree])
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EXE_LDFLAGS=
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if test -d ../newlib
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then
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AC_MSG_RESULT(yes)
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EXE_LDFLAGS="-B../../newlib/ -B../"
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else
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AC_MSG_RESULT(no)
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fi
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AC_SUBST(EXE_LDFLAGS)
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if test x"$EXE_LDFLAGS" = x
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then
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AC_MSG_CHECKING([if installed newlib needed])
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AC_TRY_LINK(,
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[/* main already defined */]
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,
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AC_MSG_RESULT(no)
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,
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AC_MSG_RESULT(yes)
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AC_MSG_WARN(newlib not found - utility .exe's may not link))
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fi
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AC_SUBST(EXE_LDFLAGS)
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case "$target_cpu" in
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i386|i486|i586|i686) DLL_ENTRY="_dll_entry@12"
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DEF_DLL_ENTRY="dll_entry@12"
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ALLOCA="_alloca"
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CONFIG_DIR="i386" ;;
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powerpc*) DLL_ENTRY="dll_entry"
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DEF_DLL_ENTRY="dll_entry"
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ALLOCA=" __allocate_stack"
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CONFIG_DIR="ppc" ;;
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*) AC_MSG_ERROR(Invalid target processor \"$target_cpu\") ;;
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esac
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AC_SUBST(DLL_ENTRY)
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AC_SUBST(DEF_DLL_ENTRY)
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AC_SUBST(ALLOCA)
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AC_SUBST(CONFIG_DIR)
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AC_OUTPUT(Makefile cygwin.def:cygwin.din)
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