diff --git a/_bin/sys_config b/_bin/sys_config
index ab765181..e725ec4b 100755
--- a/_bin/sys_config
+++ b/_bin/sys_config
@@ -215,7 +215,7 @@ cat <<"EOF" > ostringstream_view.cc
 	#include <sstream>
 	std::string_view ossv = std::ostringstream().view() ;
 EOF
-if $CXX -c -std=c++20 -o ostringstream_view.o -xc ostringstream_view.cc 2>/dev/null
+if $CXX -c -std=c++20 -o ostringstream_view.o ostringstream_view.cc
 then HAS_OSTRINGSTREAM_VIEW=1
 else HAS_OSTRINGSTREAM_VIEW=0
 fi
diff --git a/debian/changelog b/debian/changelog
index 18766b83..abab1657 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,5 +1,5 @@
-open-lmake (0.1-1) UNRELEASED; urgency=low
+open-lmake (1.0-1) UNRELEASED; urgency=low
 
   * Initial release.
 
- -- Cesar Douady <cesar.douady@doliam.fr>  Fri, 15 Dec 2023 10:28:21 +0100
+ -- Cesar Douady <cesar.douady@doliam.fr>  Wed, 24 Apr 2024 14:22:52 +0200
diff --git a/debian/control b/debian/control
index 9f7f0fe1..3591a448 100644
--- a/debian/control
+++ b/debian/control
@@ -8,7 +8,8 @@ Build-Depends:
  texinfo,
  python3,
  libslurm-dev,
- libseccomp-dev
+ libseccomp-dev,
+ libpcre2-dev
 Standards-Version: 4.6.2
 Homepage: https://github.com/cesar-douady/open-lmake
 
@@ -17,7 +18,8 @@ Architecture: amd64 arm64
 Depends:
  ${misc:Depends},
  ${shlibs:Depends},
- python3
+ python3,
+ libpcre2-8-0
 Recommends: libslurm37 | libslurm38 | libslurm39 | libslurm40
 Description: pythonic workflow management system
  Build systems like GNU Make are frequently used to create complicated
diff --git a/lmake_env/Lmakefile.py b/lmake_env/Lmakefile.py
index 67ad68cc..9157b0de 100644
--- a/lmake_env/Lmakefile.py
+++ b/lmake_env/Lmakefile.py
@@ -227,13 +227,14 @@ def cmd() :
 			)
 		n_tokens  = config.backends.local.cc
 		resources = pdict()
-		if True             : resources.mem = '512M'
+		if True             : resources.mem = '1G'
 		if backend=='local' : resources.cc  = 1
 
 class LinkRule(PathRule) :
 	combine       = ('pre_opts','rev_post_opts')
 	pre_opts      = []                           # options before inputs & outputs
 	rev_post_opts = []                           # options after  inputs & outputs, combine appends at each level, but here we want to prepend
+	resources     = {'mem': '1G'}
 	def cmd() :
 		run_gxx( TARGET
 		,	*pre_opts