The last bit to build CDE on non-FHS compliant distro like NixOS.
All other required components are already overridable like
https://github.com/gnidorah/nixpkgs/blob/740f009381a7fb207ff19b1cbe843551f0760c0d/pkgs/desktops/cdesktopenv/default.nix#L54
From 39b171a0342f279594604e608acf6563da51f522 Mon Sep 17 00:00:00 2001
From: Alex Ivanov <gnido...@ya.ru>
Date: Tue, 8 Jan 2019 22:13:32 +0300
Subject: [PATCH] define M4Cmd
---
cde/config/cf/FreeBSD.cf | 1 +
cde/config/cf/NetBSD.cf | 1 +
cde/config/cf/OpenBSD.cf | 2 ++
cde/config/cf/linux.cf | 1 +
cde/programs/nsgmls/Imakefile | 2 +-
5 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/cde/config/cf/FreeBSD.cf b/cde/config/cf/FreeBSD.cf
index b77e31bf..faf94894 100644
--- a/cde/config/cf/FreeBSD.cf
+++ b/cde/config/cf/FreeBSD.cf
@@ -232,6 +232,7 @@ ICONVSYSLIB != if test -f /usr/local/include/iconv.h; then echo -liconv; else ec
#define DefaultSystemPath /sbin:/usr/sbin:/bin:/usr/bin:$(BINDIR)
#define TroffCmd groff -Tps
+#define M4Cmd /usr/bin/m4
#define SetTtyGroup YES
#define HasNdbm YES
#define HasShm YES
diff --git a/cde/config/cf/NetBSD.cf b/cde/config/cf/NetBSD.cf
index 7d0cc593..627c4666 100644
--- a/cde/config/cf/NetBSD.cf
+++ b/cde/config/cf/NetBSD.cf
@@ -185,6 +185,7 @@ XCOMM operating system: OSName
#define NeqnCmd neqn -Tlatin1
#define EqnCmd eqn -Tps
#define TroffCmd groff -Tps
+#define M4Cmd /usr/bin/m4
/*
* To use the NetBSD Aperture driver
diff --git a/cde/config/cf/OpenBSD.cf b/cde/config/cf/OpenBSD.cf
index 2d912018..a3b12533 100644
--- a/cde/config/cf/OpenBSD.cf
+++ b/cde/config/cf/OpenBSD.cf
@@ -277,6 +277,8 @@ XCOMM operating system: OSName (OSMajorVersion./**/OSMinorVersion./**/OSTeenyVe
# define TblCmd cat
#endif
+#define M4Cmd /usr/bin/m4
+
#define HasGroff YES
#ifndef HasCookieMaker
diff --git a/cde/config/cf/linux.cf b/cde/config/cf/linux.cf
index bfe2c0be..15136b8d 100644
--- a/cde/config/cf/linux.cf
+++ b/cde/config/cf/linux.cf
@@ -87,6 +87,7 @@ XCOMM binutils: (LinuxBinUtilsMajorVersion)
#define HasMakefileSafeInclude YES
#define DependFileName .depend
#define DependCmd $(CC) -E -MM -MG
+#define M4Cmd /usr/bin/m4
#ifdef IncludeMakefile
# undef IncludeMakefile
diff --git a/cde/programs/nsgmls/Imakefile b/cde/programs/nsgmls/Imakefile
index 5d352764..1cb96f39 100644
--- a/cde/programs/nsgmls/Imakefile
+++ b/cde/programs/nsgmls/Imakefile
@@ -82,7 +82,7 @@ CXXOPTIONS = \
*/
CXXTEMPLATEFLAGS = $(NOIMPLTEMPLATES)
-M4 = /usr/bin/m4
+M4 = M4Cmd
#endif
--
2.19.2
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