From 04ec279fb574dd2e9041effe38664c33090c899d Mon Sep 17 00:00:00 2001 From: Jason Volk Date: Thu, 16 May 2019 19:30:55 -0700 Subject: [PATCH] ircd: Reduce debug_info bloating in units with spirit grammars. --- ircd/Makefile.am | 27 +++++++++++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/ircd/Makefile.am b/ircd/Makefile.am index a7f62dfea..0dee3a4af 100644 --- a/ircd/Makefile.am +++ b/ircd/Makefile.am @@ -146,32 +146,43 @@ libircd_la_SOURCES += m.cc libircd_la_SOURCES += m_event.cc libircd_la_SOURCES += ircd.cc +# Units containing a spirit grammar have some special needs to mitigate +# larger-than-normal compile time, compile memory, and output objects. +# A composite of CXXFLAGS is used specifically on units with grammars. +GUNIT_CXXFLAGS = ### + +# Grammar templates can generate a huge number of individual debug symbols +# for each template instantiation deep within spirit; we try to reduce... +GUNIT_CXXFLAGS += -fno-var-tracking +GUNIT_CXXFLAGS += -fno-var-tracking-assignments +GUNIT_CXXFLAGS += -femit-struct-debug-baseonly + # The recursive grammars can consume a large amount of RAM when compiling # (>= 2 GiB) which can thrash small systems and even sometimes crash GCC. # This option reduces memory consumption at the cost of compilation speed. if GCC if LOWMEM_COMPILE -LOWMEM_FLAGS= --param ggc-min-expand=1 +GUNIT_CXXFLAGS += --param ggc-min-expand=1 endif endif parse.lo: AM_CPPFLAGS := -include ircd/spirit.h ${AM_CPPFLAGS} -parse.lo: CXXFLAGS += ${LOWMEM_FLAGS} +parse.lo: CXXFLAGS += ${GUNIT_CXXFLAGS} json.lo: AM_CPPFLAGS := -include ircd/spirit.h ${AM_CPPFLAGS} -json.lo: CXXFLAGS += ${LOWMEM_FLAGS} +json.lo: CXXFLAGS += ${GUNIT_CXXFLAGS} http.lo: AM_CPPFLAGS := -include ircd/spirit.h ${AM_CPPFLAGS} -http.lo: CXXFLAGS += ${LOWMEM_FLAGS} +http.lo: CXXFLAGS += ${GUNIT_CXXFLAGS} fmt.lo: AM_CPPFLAGS := -include ircd/spirit.h ${AM_CPPFLAGS} -fmt.lo: CXXFLAGS += ${LOWMEM_FLAGS} +fmt.lo: CXXFLAGS += ${GUNIT_CXXFLAGS} rfc3986.lo: AM_CPPFLAGS := -include ircd/spirit.h ${AM_CPPFLAGS} -rfc3986.lo: CXXFLAGS += ${LOWMEM_FLAGS} +rfc3986.lo: CXXFLAGS += ${GUNIT_CXXFLAGS} rfc1459.lo: AM_CPPFLAGS := -include ircd/spirit.h ${AM_CPPFLAGS} -rfc1459.lo: CXXFLAGS += ${LOWMEM_FLAGS} +rfc1459.lo: CXXFLAGS += ${GUNIT_CXXFLAGS} m_id.lo: AM_CPPFLAGS := -include ircd/spirit.h ${AM_CPPFLAGS} -m_id.lo: CXXFLAGS += ${LOWMEM_FLAGS} +m_id.lo: CXXFLAGS += ${GUNIT_CXXFLAGS}