diff options
| author | Phil Pennock <pdp@exim.org> | 2012-06-25 03:27:47 -0700 |
|---|---|---|
| committer | Phil Pennock <pdp@exim.org> | 2012-06-25 03:27:47 -0700 |
| commit | 13d08c906fd061e1ebd673789b132ce2a5d2e782 (patch) | |
| tree | af08b9c0e620f4f5ab7c9ee4c833e5fb84cf27c1 /src/OS/Makefile-Linux | |
| parent | a5f239e4959d4df6a4a341d8855e14d17399d671 (diff) | |
Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
We just add CFLAGS_DYNAMIC too and some comments.
Non-POSIX syntax, but fairly portable; GNU make gained it in 1998,
we believe even very old systems should handle it fine.
Diffstat (limited to 'src/OS/Makefile-Linux')
| -rw-r--r-- | src/OS/Makefile-Linux | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/OS/Makefile-Linux b/src/OS/Makefile-Linux index 8b721410e..990f884e9 100644 --- a/src/OS/Makefile-Linux +++ b/src/OS/Makefile-Linux @@ -1,5 +1,9 @@ # Exim: OS-specific make file for Linux. This is for modern Linuxes, # which use libc6. +# +# For Linux, we assume GNU Make; at time of writing, the only extension +# used is ?= which is actually portable to other maintained Make variants, +# just is not POSIX. HAVE_ICONV=yes @@ -8,8 +12,9 @@ CHOWN_COMMAND=look_for_it CHGRP_COMMAND=look_for_it CHMOD_COMMAND=look_for_it -CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -CFLAGS_DYNAMIC=-shared -rdynamic +# Preserve CFLAGS and CFLAGS_DYNAMIC from the caller/environment +CFLAGS ?= -O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE +CFLAGS_DYNAMIC ?= -shared -rdynamic DBMLIB = -ldb USE_DB = yes |