From 5660c0f5b856735d2259d04d890be52902dbbc78 Mon Sep 17 00:00:00 2001 From: Eli Zaretskii Date: Sat, 27 Mar 2010 15:52:55 +0300 Subject: [PATCH] Document problems on MS-Windows with incompatible regex.h headers. PROBLEMS: Mention problems on MS-Windows with incompatible regex.h headers. --- etc/ChangeLog | 5 +++++ etc/PROBLEMS | 20 ++++++++++++++++++++ 2 files changed, 25 insertions(+) diff --git a/etc/ChangeLog b/etc/ChangeLog index 7b6ba9f7bb2..3fb2dd336a8 100644 --- a/etc/ChangeLog +++ b/etc/ChangeLog @@ -1,3 +1,8 @@ +2010-03-27 Eli Zaretskii + + * PROBLEMS: Mention problems on MS-Windows with incompatible + regex.h headers. + 2010-03-15 Francesc Rocher * MORE.STUFF: Remove CEDET entry, now distributed as part of diff --git a/etc/PROBLEMS b/etc/PROBLEMS index db395df233e..8c76fe20e0a 100644 --- a/etc/PROBLEMS +++ b/etc/PROBLEMS @@ -2478,6 +2478,26 @@ these GCC versions. Note that these versions of GCC, 4.0.3, 4.0.4, 4.1.1, and 4.1.2, are currently the _only_ versions known to succeed in building Emacs (as of v22.1). +*** Building the native MS-Windows port fails due to unresolved externals + +The linker error messages look like this: + + oo-spd/i386/ctags.o:ctags.c:(.text+0x156e): undefined reference to `_imp__re_set_syntax' + collect2: ld returned 1 exit status + +This happens because GCC finds an incompatible header regex.h +somewhere on the include path, before the version of regex.h supplied +with Emacs. One such incompatible version of regex.h is part of the +GnuWin32 Regex package. + +The solution is to remove the incompatible regex.h from the include +path, when compiling Emacs. Alternatively, re-run the configure.bat +script with the "-isystem C:/GnuWin32/include" switch (adapt for your +system's place where you keep the GnuWin32 include files) -- this will +cause the compiler to search headers in the directories specified by +the Emacs Makefile _before_ it looks in the GnuWin32 include +directories. + *** Building the native MS-Windows port with Cygwin GCC can fail. Emacs may not build using some Cygwin builds of GCC, such as Cygwin