C extension fails to build on Solaris with newer GCC because of -std=c99
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Key: JRUBY-5601
URL: http://jira.codehaus.org/browse/JRUBY-5601
Project: JRuby
Issue Type: Bug
Components: C Extensions
Affects Versions: JRuby 1.6
Environment: Solaris 10/x86, gcc 4.5.1
Reporter: Clayton O'Neill
Assignee: Thomas E Enebo
Attachments: solaris-c99.patch
I get the error below when building the cext. The problem appears to be the
following:
* -std=c99 is added to CFLAGS for Solaris
* CFLAGS also contains -Werror
* CFLAGS is propagated to CXXFLAGS without change
* We're compiling C++ code.
* gcc considers compiling C++ with -std=c99 to be nonsensical, and throws a
warning
* -Werror is on, so the warning becomes an error and compilation dies.
Attached is a patch that removes -std=c99 from the Makefile, since it *appears*
to be unnecessary.
Output:
[exec] gcc -m32 -DNDEBUG -fno-omit-frame-pointer -fno-strict-aliasing -W
-Wall -Wno-unused -Wno-parentheses -Werror -Wundef
-I"/sw/src/BUILD/jruby-1.6.0/cext/src/../..//build"
-I"/sw/src/BUILD/jruby-1.6.0/cext/src"
-I"/sw/src/BUILD/jruby-1.6.0/cext/src/../..//build"/jni
-I"/sw/src/BUILD/jruby-1.6.0/cext/src"/include
-I"/sw/src/BUILD/jruby-1.6.0/cext/src"/include/ruby -fPIC
-I"/sw/jdk/jdk-1.6/include" -I"/sw/jdk/jdk-1.6/include/solaris" -D_REENTRANT
-D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D__EXTENSIONS__ -std=c99 -c
/sw/src/BUILD/jruby-1.6.0/cext/src/st.c -o
/sw/src/BUILD/jruby-1.6.0/cext/src/../..//build/st.o
[exec] cc1plus: warnings being treated as errors
[exec] cc1plus: error: command line option "-std=c99" is valid for C/ObjC
but not for C++
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