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Michael Witten
ced465c400
Currently, Python 3 is not supported by perf's code; this
can cause the build to fail for systems that have Python 3
installed as the default python:
python{,-config}
The Correct Solution is to write compatibility code so that
Python 3 works out-of-the-box.
However, users often have an ancillary Python 2 installed:
python2{,-config}
Therefore, a quick fix is to allow the user to specify those
ancillary paths as the python binaries that Makefile should
use, thereby avoiding Python 3 altogether; as an added benefit,
the Python binaries may be installed in non-standard locations
without the need for updating any PATH variable.
This commit adds the ability to set PYTHON and/or PYTHON_CONFIG
either as environment variables or as make variables on the
command line; the paths may be relative, and usually only PYTHON
is necessary in order for PYTHON_CONFIG to be defined implicitly.
Some rudimentary error checking is performed when the user
explicitly specifies a value for any of these variables.
In addition, this commit introduces significantly robust makefile
infrastructure for working with paths and communicating with the
shell; it's currently only used for handling Python, but I hope
it will prove useful in refactoring the makefiles.
Thanks to:
Raghavendra D Prabhu <rprabhu@wnohang.net>
for motivating this patch.
Acked-by: Raghavendra D Prabhu <rprabhu@wnohang.net>
Link: http://lkml.kernel.org/r/e987828e-87ec-4973-95e7-47f10f5d9bab-mfwitten@gmail.com
Signed-off-by: Michael Witten <mfwitten@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
137 lines
1.9 KiB
Makefile
137 lines
1.9 KiB
Makefile
define SOURCE_HELLO
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#include <stdio.h>
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int main(void)
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{
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return puts(\"hi\");
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}
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endef
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ifndef NO_DWARF
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define SOURCE_DWARF
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#include <dwarf.h>
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#include <elfutils/libdw.h>
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#include <elfutils/version.h>
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#ifndef _ELFUTILS_PREREQ
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#error
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#endif
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int main(void)
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{
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Dwarf *dbg = dwarf_begin(0, DWARF_C_READ);
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return (long)dbg;
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}
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endef
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endif
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define SOURCE_LIBELF
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#include <libelf.h>
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int main(void)
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{
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Elf *elf = elf_begin(0, ELF_C_READ, 0);
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return (long)elf;
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}
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endef
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define SOURCE_GLIBC
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#include <gnu/libc-version.h>
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int main(void)
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{
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const char *version = gnu_get_libc_version();
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return (long)version;
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}
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endef
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define SOURCE_ELF_MMAP
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#include <libelf.h>
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int main(void)
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{
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Elf *elf = elf_begin(0, ELF_C_READ_MMAP, 0);
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return (long)elf;
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}
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endef
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ifndef NO_NEWT
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define SOURCE_NEWT
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#include <newt.h>
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int main(void)
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{
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newtInit();
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newtCls();
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return newtFinished();
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}
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endef
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endif
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ifndef NO_LIBPERL
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define SOURCE_PERL_EMBED
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#include <EXTERN.h>
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#include <perl.h>
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int main(void)
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{
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perl_alloc();
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return 0;
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}
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endef
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endif
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ifndef NO_LIBPYTHON
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define SOURCE_PYTHON_VERSION
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#include <Python.h>
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#if PY_VERSION_HEX >= 0x03000000
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#error
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#endif
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int main(void){}
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endef
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define SOURCE_PYTHON_EMBED
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#include <Python.h>
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int main(void)
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{
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Py_Initialize();
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return 0;
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}
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endef
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endif
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define SOURCE_BFD
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#include <bfd.h>
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int main(void)
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{
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bfd_demangle(0, 0, 0);
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return 0;
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}
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endef
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define SOURCE_CPLUS_DEMANGLE
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extern char *cplus_demangle(const char *, int);
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int main(void)
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{
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cplus_demangle(0, 0);
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return 0;
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}
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endef
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define SOURCE_STRLCPY
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#include <stdlib.h>
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extern size_t strlcpy(char *dest, const char *src, size_t size);
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int main(void)
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{
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strlcpy(NULL, NULL, 0);
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return 0;
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}
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endef
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# try-cc
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# Usage: option = $(call try-cc, source-to-build, cc-options)
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try-cc = $(shell sh -c \
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'TMP="$(OUTPUT)$(TMPOUT).$$$$"; \
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echo "$(1)" | \
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$(CC) -x c - $(2) -o "$$TMP" > /dev/null 2>&1 && echo y; \
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rm -f "$$TMP"')
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