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| author |   Siddhesh Poyarekar <siddhesh@sourceware.org> | 2016-12-31 23:34:04 +0530 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2016-12-31 23:49:24 +0530 |
| commit | 6765d5d34d126b26d55e2d73dac4dfec5e6d6241 (patch) | |
| tree | 4f8c8aebebd366900e8657a91158771e2cf5e058 /Makeconfig | |
| parent | Initialize tunable list with the GLIBC_TUNABLES environment variable (diff) | |
| download | glibc-6765d5d34d126b26d55e2d73dac4dfec5e6d6241.tar.gz glibc-6765d5d34d126b26d55e2d73dac4dfec5e6d6241.tar.bz2 glibc-6765d5d34d126b26d55e2d73dac4dfec5e6d6241.zip | |
Enhance --enable-tunables to select tunables frontend at build time
At the GNU Tools Cauldron 2016, the state of the current tunables
patchset was considered OK with the addition of a way to select the
frontend to be used for the tunables. That is, to avoid being locked
in to one type of frontend initially, it should be possible to build
tunables with a different frontend with something as simple as a
configure switch.
To that effect, this patch enhances the --enable-tunables option to
accept more values than just 'yes' or 'no'. The current frontend (and
default when enable-tunables is 'yes') is called 'valstring', to
select the frontend where a single environment variable is set to a
colon-separated value string. More such frontends can be added in
future.
* Makeconfig (have-tunables): Check for non-negative instead
of positive.
* configure.ac: Add 'valstring' as a valid value for
--enable-tunables.
* configure: Regenerate.
* elf/Makefile (have-tunables): Check for non-negative instead
of positive.
(CPPFLAGS-dl-tunables.c): Define TUNABLES_FRONTEND for
dl-tunables.c.
* elf/dl-tunables.c (GLIBC_TUNABLES): Define only when
TUNABLES_FRONTEND == TUNABLES_FRONTEND_valstring.
(tunables_strdup): Likewise.
(disable_tunables): Likewise.
(parse_tunables): Likewise.
(__tunables_init): Process GLIBC_TUNABLES envvar only when.
TUNABLES_FRONTEND == TUNABLES_FRONTEND_valstring.
* elf/dl-tunables.h (TUNABLES_FRONTEND_valstring): New macro.
(TUNABLES_FRONTEND_yes): New macro, define as
TUNABLES_FRONTEND_valstring by default.
* manual/install.texi: Document new acceptable values for
--enable-tunables.
* INSTALL: Regenerate.
Diffstat (limited to 'Makeconfig')
| -rw-r--r-- | Makeconfig | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Makeconfig b/Makeconfig index b173e4cc08..1a2db6da1d 100644 --- a/Makeconfig +++ b/Makeconfig @@ -935,7 +935,7 @@ CPPFLAGS = $(config-extra-cppflags) $(CPPUNDEFS) $(CPPFLAGS-config) \ $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \ $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F))) -ifeq (yes,$(have-tunables)) +ifneq (no,$(have-tunables)) CPPFLAGS += -DTOP_NAMESPACE=glibc endif @@ -1115,7 +1115,7 @@ endif # Build the tunables list header early since it could be used by any module in # glibc. -ifeq (yes,$(have-tunables)) +ifneq (no,$(have-tunables)) before-compile += $(common-objpfx)dl-tunable-list.h $(common-objpfx)dl-tunable-list.h: $(..)scripts/gen-tunables.awk \ |