On Cygwin, like on mingw, define DLL_EXPORT.

diff --git a/ChangeLog b/ChangeLog
index 401ba8098b45ddc2b392bc9ebf83561054b0f6e1..1f96cb846271b6a68661f77739963801286bee48 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2006-05-06  Charles Wilson  <cygwin@cwilson.fastmail.fm>
+
+       * m4/libtool.m4: On Cygwin, like on mingw, define DLL_EXPORT when
+       compiling a shared library object.
+
 2006-05-05  Bruno Haible  <bruno@clisp.org>
 
        * m4/libtool.m4 (AC_LIBTOOL_LANG_CXX_CONFIG): Add support for Sun C++

diff --git a/m4/libtool.m4 b/m4/libtool.m4
index c2c97e890cd2e95e846ddc751a0f9600887692e2..57a0e18ac327c8ba4f063417a1e34ab8dc90bfbe 100644 (file)
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -4857,12 +4857,14 @@ AC_MSG_CHECKING([for $compiler option to produce PIC])
       # like `-m68040'.
       _LT_AC_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
       ;;
-    beos* | cygwin* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+    beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
       # PIC is the default for these OSes.
       ;;
-    mingw* | os2* | pw32*)
+    mingw* | cygwin* | os2* | pw32*)
       # This hack is so that the source file can tell whether it is being
       # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
       _LT_AC_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'
       ;;
     darwin* | rhapsody*)
@@ -5136,13 +5138,15 @@ AC_MSG_CHECKING([for $compiler option to produce PIC])
       _LT_AC_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
       ;;
 
-    beos* | cygwin* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+    beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
       # PIC is the default for these OSes.
       ;;
 
-    mingw* | pw32* | os2*)
+    mingw* | cygwin* | pw32* | os2*)
       # This hack is so that the source file can tell whether it is being
       # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
       _LT_AC_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'
       ;;
 
@@ -5210,9 +5214,11 @@ AC_MSG_CHECKING([for $compiler option to produce PIC])
        esac
        ;;
 
-    mingw* | pw32* | os2*)
+    mingw* | cygwin* | pw32* | os2*)
       # This hack is so that the source file can tell whether it is being
       # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
       _LT_AC_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'
       ;;