diff options
Diffstat (limited to 'make/output.mk.in')
| -rw-r--r-- | make/output.mk.in | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/make/output.mk.in b/make/output.mk.in index 2f1a1d3a79..de60d03b91 100644 --- a/make/output.mk.in +++ b/make/output.mk.in @@ -22,19 +22,35 @@ # Author: Anthony Ramine # ---------------------------------------------------- +# These variables are used to produce less output when running make with V=0 or +# with the --enable-silent-rules flag. +# +# For each compiler kind of file generated by a command during the building of +# Erlang/OTP, a variable named <command>_verbose should be defined and used as +# a command prefix. The generic gen_verbose variable is offered for +# miscellaneous operations like sed, cp or magical Perl incantations. +# +# A second variable V_<COMMAND> is also provided for major compilation tools +# like CC, ERLC or JAVAC. + +# DEFAULT_VERBOSITY is set by the --enable-silent-rules configure flag. ifeq ($(V),) V = @DEFAULT_VERBOSITY@ endif +# v_p should be used with `test` to dynamically print things. ifeq ($(V),0) v_p = 0 else v_p = 1 endif +# V_at is the @ prefix when silent rules are enabled. V_at_0 = @ V_at = $(V_at_$(V)) +# V_colon makes the prefixed command into a no-op if silent rules are enabled, +# useful to annihilate an `echo` command. V_colon_0 = @: "" V_colon = $(V_colon_$(V)) @@ -49,6 +65,10 @@ cc_verbose_0 = @echo " CC "$@; cc_verbose = $(cc_verbose_$(V)) V_CC = $(cc_verbose)$(CC) +cpp_verbose_0 = @echo " CPP "$@; +cpp_verbose = $(cpp_verbose_$(V)) + +# For the diameter compiler. dia_verbose_0 = @echo " DIA "$@; dia_verbose = $(dia_verbose_$(V)) @@ -87,6 +107,11 @@ V_LEX = $(lex_verbose)$(LEX) m4_verbose_0 = @echo " M4 "$@; m4_verbose = $(m4_verbose_$(V)) +# V_MAKE isn't defined and shouldn't be to avoid breaking parallel building and +# the following warning: +# +# warning: jobserver unavailable: using -j1. Add `+' to parent make rule. +# make_verbose_0 = @echo " MAKE "$@; make_verbose = $(make_verbose_$(V)) @@ -105,6 +130,8 @@ V_RC = $(rc_verbose)$(RC) snmp_verbose_0 = @echo " SNMP "$@; snmp_verbose = $(snmp_verbose_$(V)) +# vsn_verbose should be used instead of gen_verbose when sed or another tool +# is used to insert a version number into a file. vsn_verbose_0 = @echo " VSN "$@; vsn_verbose = $(vsn_verbose_$(V)) |