tAuto-detect whether to use -fnative-struct or -mms-bitfields compiler flags fo… | |
git clone git://src.adamsgaard.dk/vaccinewars | |
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--- | |
commit 6da47caea44cdfb79a74cb20f7e8ea1ab59116e8 | |
parent 43f36bd8dac0823fc2d0a26ae7062e91de60a0a8 | |
Author: Ben Webb <[email protected]> | |
Date: Fri, 6 Jun 2003 19:08:48 +0000 | |
Auto-detect whether to use -fnative-struct or -mms-bitfields compiler flags | |
for building on Cygwin (Win32) systems. | |
Diffstat: | |
M configure.in | 12 +++++++++++- | |
1 file changed, 11 insertions(+), 1 deletion(-) | |
--- | |
diff --git a/configure.in b/configure.in | |
t@@ -72,11 +72,21 @@ if test "$CYGWIN" = "yes" ; then | |
AC_MSG_RESULT([Configuring for native Win32 binary under Cygwin]) | |
AC_DEFINE(CYGWIN, 1, [Define if building under the Cygwin environment]) | |
+ dnl This flag allows linking with MSVC-generated DLLs. -fnative-struct was | |
+ dnl used by gcc 2, and -mms-bitfields by gcc 3, so it is tested for here. | |
+ bkp_CFLAGS="$CFLAGS" | |
+ AC_MSG_CHECKING(for compiler MSVC compatibility flag) | |
+ CFLAGS="$CFLAGS -mms-bitfields" | |
+ AC_COMPILE_IFELSE([ AC_LANG_PROGRAM() ], [ mscompat="-mms-bitfields" ], | |
+ [ mscompat="-fnative-struct" ]) | |
+ AC_MSG_RESULT($mscompat) | |
+ CFLAGS="$bkp_CFLAGS" | |
+ | |
dnl Libraries and flags | |
dnl N.B. -mno-cygwin is included in CPPFLAGS so the right headers | |
dnl are detected (in /usr/include/mingw/ rather than /usr/include) | |
dnl later on - e.g. sys/param.h isn't in mingw. | |
- CFLAGS="$CFLAGS -mwindows -fnative-struct" | |
+ CFLAGS="$CFLAGS -mwindows $mscompat" | |
CPPFLAGS="$CPPFLAGS -mno-cygwin" | |
LIBS="$LIBS -lwsock32 -lcomctl32 -lmpr" | |
LDFLAGS="$LDFLAGS -mno-cygwin" |