Experimental Physics and
Industrial Control System

Good point, I see that on my end as well.  And now that you mention it, I will look through our site-specific patch files to see if this is getting screwed up somewhere/

 

STATIC_BUILD is being set in configure/os/CONFIG_SITE.Common.win32-x86-mingw, as part of a patch that pre-dates my time here:

 

Date: Tue, 29 Dec 2015 11:41:22 -0800

Subject: Cross-build with mingw32

 

---

configure/os/CONFIG_SITE.Common.win32-x86-mingw    | 15 +++++++++++++++

configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw |  4 ++--

2 files changed, 17 insertions(+), 2 deletions(-)

 

diff --git a/configure/os/CONFIG_SITE.Common.win32-x86-mingw b/configure/os/CONFIG_SITE.Common.win32-x86-mingw

index ba19ac6..d2f74bb 100644

--- a/configure/os/CONFIG_SITE.Common.win32-x86-mingw

+++ b/configure/os/CONFIG_SITE.Common.win32-x86-mingw

@@ -5,3 +5,18 @@

# If readline is available uncomment the following line

# to enable command-line editing and history support

#COMMANDLINE_LIBRARY = READLINE

+

+CMPLR_PREFIX=i686-w64-mingw32-

+

+SHARED_LIBRARIES=NO

+STATIC_BUILD=YES

+

+# No -fPIC avoids "-fPIC ignored for target (all code is position independent)"

+SHRLIB_CFLAGS =

+SHRLIB_LDFLAGS = -shared -Wl,--out-implib,$(LIB_PREFIX)$*$(LIB_SUFFIX)

+LOADABLE_SHRLIB_LDFLAGS = -shared -Wl,--out-implib,$(LIB_PREFIX)$*$(LIB_SUFFIX)

+

+# Override linking with gcc library from CONFIG.gnuCommon

+GNU_LDLIBS_YES =

+

+OP_SYS_LDLIBS = -lws2_32

diff --git a/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw b/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw

index dfc947e..cad5db1 100644

--- a/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw

+++ b/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw

@@ -15,9 +15,9 @@

 # Different distribution cross-build packages use different prefixes:

# Ubuntu:

-#CMPLR_PREFIX = i686-w64-mingw32-

+CMPLR_PREFIX = i686-w64-mingw32-

# RHEL:

-CMPLR_PREFIX = i686-pc-mingw32-

+#CMPLR_PREFIX = i686-pc-mingw32-

# Debian?

#CMPLR_PREFIX = i586-mingw32msvc-

 

I am not exactly sure why static build is necessary; there is no commentary along with the patch. Do you know of any reason why this would be required?

 

 

From: Freddie Akeroyd - STFC UKRI <freddie.akeroyd at stfc.ac.uk>
Sent: Monday, March 28, 2022 3:59 PM
To: Daykin, Evan <daykin at frib.msu.edu>; tech-talk at aps.anl.gov
Subject: RE: cross-compiling Base 7.0.6 for win32

 

[EXTERNAL] This email originated from outside of FRIB

Hi Evan,

 

I’ve now tried a mingw build on Ubuntu 20.04 and found I didn’t need to make any changes, the  dbghelp  and psapi libraries are already listed in the  OP_SYS_LDLIBS  for mingw and this got automatically added to my link line when building tests and other things, but from the link line in your post this doesn’t seem to be happening. Which epics config file did you specify STATIC_BUILD in? I added this to CONFIG_SITE along with CROSS_COMPILER_TARGET_ARCHS and that all seemed to work for me with no additional libraries.

 

Regards,

 

Freddie