GCC properly provides CTOR/DTOR END/LIST symbols already via the normal

[uclinux-h8/elf2flt.git] / configure.in

diff --git a/configure.in b/configure.in
index d43b500..e18e41c 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1,6 +1,12 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_INIT(elf2flt.c)
 
+AC_ARG_WITH(zlib-prefix,
+       [ --with-zlib-prefix=<dir>  path to installed zlib ],
+       [ ac_zlib_prefix=$withval ],
+       [ ac_zlib_prefix=NONE ]
+)
+
 AC_ARG_WITH(libbfd,
        [ --with-libbfd=<file>  path to libbfd.a library to use ],
        [ ac_libbfd=$withval ],
@@ -31,6 +37,12 @@ AC_ARG_WITH(binutils-ldscript-dir,
        [ ac_binutils_ldscript_dir=NONE ]
 )
 
+AC_ARG_WITH(binutils-build-dir,
+       [ --with-binutils-build-dir=<dir>  path to compiled binutils tree ],
+       [ ac_binutils_build_dir=$withval ],
+       [ ac_binutils_build_dir=NONE ]
+)
+
 AC_ARG_ENABLE(got-check,
        [ --disable-got-check - disable check for GOT (needed on H8) ],
        [ got_check=$enableval ],
@@ -43,6 +55,12 @@ AC_ARG_ENABLE(emit_relocs,
        [ emit_relocs=yes ]
 )
 
+AC_ARG_ENABLE(emit_ctor_dtor,
+       AS_HELP_STRING([--enable-emit-ctor-dtor], [manually create ctor/dtor list]),
+       [ emit_ctor_dtor=$enableval ],
+       [ emit_ctor_dtor=no ]
+)
+
 AC_CANONICAL_HOST
 AC_CANONICAL_TARGET
 
@@ -50,6 +68,13 @@ dnl Checks for programs.
 AC_PROG_CC
 AC_PROG_INSTALL
 
+if test "$ac_binutils_build_dir" != "NONE"; then
+  test "$ac_libbfd"               = "NONE" && ac_libbfd="$ac_binutils_build_dir/bfd/libbfd.a"
+  test "$ac_libiberty"            = "NONE" && ac_libiberty="$ac_binutils_build_dir/libiberty/libiberty.a"
+  test "$ac_bfd_include_dir"      = "NONE" && ac_bfd_include_dir="$ac_binutils_build_dir/bfd"
+  test "$ac_binutils_include_dir" = "NONE" && ac_binutils_include_dir="$ac_binutils_build_dir/include"
+fi
+
 dnl Checks for libraries.
 if test "$ac_libiberty" = "NONE"; then
   AC_CHECK_LIB(iberty, objalloc_create)
@@ -63,6 +88,11 @@ if test "$ac_libbfd" = "NONE"; then
 else
   LIBS="$ac_libbfd $LIBS"
 fi
+if test "$ac_zlib_prefix" = "NONE"; then
+  AC_CHECK_LIB(z, deflate)
+else
+  LIBS="-L$ac_zlib_prefix/lib -lz $LIBS"
+fi
 
 bfd_include_dir=
 if test "$ac_bfd_include_dir" != "NONE"; then
@@ -74,6 +104,11 @@ if test "$ac_binutils_include_dir" != "NONE"; then
   binutils_include_dir="-I$ac_binutils_include_dir"
 fi
 
+zlib_include_dir=
+if test "$ac_zlib_prefix" != "NONE"; then
+  zlib_include_dir="-I$ac_zlib_prefix/include"
+fi
+
 binutils_ldscript_dir=
 if test "$ac_binutils_ldscript_dir" = "NONE"; then
   ac_binutils_ldscript_dir="\${TOOLDIR}/../${target_alias}/lib"
@@ -106,6 +141,20 @@ Run configure again specifying these options:
 ])
 fi
 
+SYMBOL_PREFIX=
+case $target in
+       bfin*)
+               SYMBOL_PREFIX=_
+               ;;
+esac
+
+dnl Make sure we resolve system symbols before libiberty/libbfd ones.
+dnl Otherwise, things like getopt get screwed up because the system headers
+dnl redirect some functions to the system symbols, but other local symbols
+dnl come from libiberty/libbfd.
+dnl int getopt(int, char * const [], const char *) __asm("_" "getopt" "$UNIX2003");
+AC_CHECK_LIB(c, malloc, LIBS="-lc $LIBS")
+
 dnl Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS(fcntl.h unistd.h bfd.h)
@@ -126,9 +175,12 @@ AC_SUBST(target_os)
 AC_SUBST(target_vendor)
 AC_SUBST(bfd_include_dir)
 AC_SUBST(binutils_include_dir)
+AC_SUBST(zlib_include_dir)
 AC_SUBST(binutils_ldscript_dir)
 AC_SUBST(got_check)
 AC_SUBST(emit_relocs)
+AC_SUBST(emit_ctor_dtor)
+AC_SUBST(SYMBOL_PREFIX)
 
-AC_OUTPUT(Makefile ld-elf2flt)
+AC_OUTPUT(Makefile ld-elf2flt elf2flt.ld)