pkg/55404: textproc/icu fails to compile on Linux (Gentoo)

[adr%sdf.org@localhost]

>Number:         55404
>Category:       pkg
>Synopsis:       textproc/icu fails to compile on Linux (Gentoo)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jun 20 22:00:01 +0000 2020
>Originator:     adr
>Release:        pkgsrc current
>Organization:
>Environment:
Linux gentoo1 5.7.0-rc4-1-ARCH #1 SMP PREEMPT Tue May 5 01:29:48 UTC 2020 armv7l ARMv7 Processor rev 5 (v7l) Allwinner sun8i Family GNU/Linux
>Description:
Building textproc/icu on gentoo fails at genrb:
   [...]
   c++   ...  uconv.cpp
   cc    ...  uwmsg.c
   LD_LIBRARY_PATH=../../lib:../../stubdata:../../tools/ctestfw:$LD_LIBRARY_PATH  ../../bin/gen
rb -e UTF-8 -s resources -d uconvmsg root.txt
      ../../bin/genrb: error while loading shared libraries: ../../lib/libicudata.so.67: intern
al error
>How-To-Repeat:
bmake
>Fix:
RCS file: /cvsroot/pkgsrc/textproc/icu/Makefile,v
retrieving revision 1.133
diff -u -r1.133 Makefile
--- Makefile    2 Jun 2020 08:34:35 -0000       1.133
+++ Makefile    20 Jun 2020 21:57:08 -0000
@@ -134,5 +134,13 @@
 SUBST_SED.icu-config+= -e '/l$${ICUPREFIX}/ s/$${ICULIBSUFFIX_VERSION}//g'
 .endif
 
+.if ${OPSYS} == "Linux"
+SUBST_CLASSES+=         mh-linux
+SUBST_MESSAGE.mh-linux+=Fixing icudata linking.
+SUBST_STAGE.mh-linux=   pre-configure
+SUBST_FILES.mh-linux=  config/mh-linux
+SUBST_SED.mh-linux+=    -e 's/LDFLAGSICUDT=-nodefaultlibs -nostdlib/LDFLAGSICUDT=/'
+.endif
+
 .include "../../lang/python/tool.mk"
 .include "../../mk/bsd.pkg.mk"