[PATCH] build system: choose gnu99 as a C standard

[PATCH] build system: choose gnu99 as a C standard

[David Bremner]

Apparently pre 5.1 gcc defaulted to gnu89, but we decided it was ok to
use some c99 features.

'-std=c99' by itself is not enough for notmuch to compile.

'-std=gnu99' seems to work with clang and gcc, so I'm not convinced
configuration support is needed.
---

Our use of c99 loop variable declarations breaks the build on travis,
because old gcc defaults to c89+extensions

 Makefile.local | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile.local b/Makefile.local
index 5587cd2..d1b0585 100644
--- a/Makefile.local
+++ b/Makefile.local
@@ -44,7 +44,8 @@ GPG_FILE=$(SHA1_FILE).asc
 PV_FILE=bindings/python/notmuch/version.py
 
 # Smash together user's values with our extra values
-FINAL_CFLAGS = -DNOTMUCH_VERSION=$(VERSION) $(CPPFLAGS) $(CFLAGS) $(WARN_CFLAGS) $(extra_cflags) $(CONFIGURE_CFLAGS)
+STD_CFLAGS := -std=gnu99
+FINAL_CFLAGS = -DNOTMUCH_VERSION=$(VERSION) $(CPPFLAGS) $(STD_CFLAGS) $(CFLAGS) $(WARN_CFLAGS) $(extra_cflags) $(CONFIGURE_CFLAGS)
 FINAL_CXXFLAGS = $(CPPFLAGS) $(CXXFLAGS) $(WARN_CXXFLAGS) $(extra_cflags) $(extra_cxxflags) $(CONFIGURE_CXXFLAGS)
 FINAL_NOTMUCH_LDFLAGS = $(LDFLAGS) -Lutil -lutil -Llib -lnotmuch
 ifeq ($(LIBDIR_IN_LDCONFIG),0)
-- 
2.9.3

Re: [PATCH] build system: choose gnu99 as a C standard

[Tomi Ollila]

On Thu, Sep 22 2016, David Bremner <david@tethera.net> wrote:

> Apparently pre 5.1 gcc defaulted to gnu89, but we decided it was ok to
> use some c99 features.
>
> '-std=c99' by itself is not enough for notmuch to compile.
>
> '-std=gnu99' seems to work with clang and gcc, so I'm not convinced
> configuration support is needed.

agreed. works. +1

Tomi


> ---
>
> Our use of c99 loop variable declarations breaks the build on travis,
> because old gcc defaults to c89+extensions
>
>  Makefile.local | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/Makefile.local b/Makefile.local
> index 5587cd2..d1b0585 100644
> --- a/Makefile.local
> +++ b/Makefile.local
> @@ -44,7 +44,8 @@ GPG_FILE=$(SHA1_FILE).asc
>  PV_FILE=bindings/python/notmuch/version.py
>  
>  # Smash together user's values with our extra values
> -FINAL_CFLAGS = -DNOTMUCH_VERSION=$(VERSION) $(CPPFLAGS) $(CFLAGS) $(WARN_CFLAGS) $(extra_cflags) $(CONFIGURE_CFLAGS)
> +STD_CFLAGS := -std=gnu99
> +FINAL_CFLAGS = -DNOTMUCH_VERSION=$(VERSION) $(CPPFLAGS) $(STD_CFLAGS) $(CFLAGS) $(WARN_CFLAGS) $(extra_cflags) $(CONFIGURE_CFLAGS)
>  FINAL_CXXFLAGS = $(CPPFLAGS) $(CXXFLAGS) $(WARN_CXXFLAGS) $(extra_cflags) $(extra_cxxflags) $(CONFIGURE_CXXFLAGS)
>  FINAL_NOTMUCH_LDFLAGS = $(LDFLAGS) -Lutil -lutil -Llib -lnotmuch
>  ifeq ($(LIBDIR_IN_LDCONFIG),0)
> -- 
> 2.9.3
>
> _______________________________________________
> notmuch mailing list
> notmuch@notmuchmail.org
> https://notmuchmail.org/mailman/listinfo/notmuch

Re: [PATCH] build system: choose gnu99 as a C standard

[David Bremner]

David Bremner <david@tethera.net> writes:

> Apparently pre 5.1 gcc defaulted to gnu89, but we decided it was ok to
> use some c99 features.
>
> '-std=c99' by itself is not enough for notmuch to compile.
>
> '-std=gnu99' seems to work with clang and gcc, so I'm not convinced
> configuration support is needed.
> ---

pushed.

d