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nasm/aclocal.m4

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Cleaner way to add gcc options We can actually test for the options being accepted, rather than try to test for gcc; this handles differences between gcc versions as well as compilers with a similar command line set.
2007-04-16 06:45:25 +08:00
dnl --------------------------------------------------------------------------
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
dnl PA_SYM(prefix, string)
Cleaner way to add gcc options We can actually test for the options being accepted, rather than try to test for gcc; this handles differences between gcc versions as well as compilers with a similar command line set.
2007-04-16 06:45:25 +08:00
dnl
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
dnl Convert a (semi-) arbitrary string to a CPP symbol
dnl --------------------------------------------------------------------------
AC_DEFUN(PA_SYM,
[[$1]m4_bpatsubsts(m4_toupper([$2]),[[^ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789]+],[_],[^._?\(.*\)_.$],[[\1]])])
dnl --------------------------------------------------------------------------
dnl PA_ADD_CFLAGS(flag [,actual_flag])
dnl
dnl Attempt to add the given option to CFLAGS, if it doesn't break
dnl compilation. If the option to be tested is different than the
dnl option that should actually be added, add the option to be
dnl actually added as a second argument.
Cleaner way to add gcc options We can actually test for the options being accepted, rather than try to test for gcc; this handles differences between gcc versions as well as compilers with a similar command line set.
2007-04-16 06:45:25 +08:00
dnl --------------------------------------------------------------------------
AC_DEFUN(PA_ADD_CFLAGS,
[AC_MSG_CHECKING([if $CC accepts $1])
pa_add_cflags__old_cflags="$CFLAGS"
CFLAGS="$CFLAGS $1"
aclocal.m4: make it possible to request a header file to be further used Make it possible to request testing for a header file, which if found, will be always included for futher tests. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-19 06:48:31 +08:00
AC_TRY_LINK(AC_INCLUDES_DEFAULT,
Cleaner way to add gcc options We can actually test for the options being accepted, rather than try to test for gcc; this handles differences between gcc versions as well as compilers with a similar command line set.
2007-04-16 06:45:25 +08:00
[printf("Hello, World!\n");],
aclocal.m4: fix underquoted strings Some strings were underquoted, causing failures. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-24 12:42:08 +08:00
[AC_MSG_RESULT([yes])
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
CFLAGS="$pa_add_cflags__old_cflags ifelse([$2],[],[$1],[$2])"
AC_DEFINE(PA_SYM([CFLAG_],[$1]), 1,
[Define to 1 if compiled with the `$1' compiler flag])],
aclocal.m4: fix underquoted strings Some strings were underquoted, causing failures. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-24 12:42:08 +08:00
[AC_MSG_RESULT([no])
CFLAGS="$pa_add_cflags__old_cflags"])])
Cleaner way to add gcc options We can actually test for the options being accepted, rather than try to test for gcc; this handles differences between gcc versions as well as compilers with a similar command line set.
2007-04-16 06:45:25 +08:00
Makefile: make it possible to compile with gcc link-time optimization Put in the necessary machinery to compile with gcc link-time optimization. This means compiling and linking with -flto, as well as using gcc-ar and gcc-ranlib instead of the normal tools. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-03-01 10:48:01 +08:00
dnl --------------------------------------------------------------------------
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
dnl PA_ADD_CLDFLAGS(flag [,actual_flag])
Makefile: make it possible to compile with gcc link-time optimization Put in the necessary machinery to compile with gcc link-time optimization. This means compiling and linking with -flto, as well as using gcc-ar and gcc-ranlib instead of the normal tools. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-03-01 10:48:01 +08:00
dnl
dnl Attempt to add the given option to CFLAGS and LDFLAGS,
dnl if it doesn't break compilation
dnl --------------------------------------------------------------------------
AC_DEFUN(PA_ADD_CLDFLAGS,
[AC_MSG_CHECKING([if $CC accepts $1])
pa_add_cldflags__old_cflags="$CFLAGS"
CFLAGS="$CFLAGS $1"
pa_add_cldflags__old_ldflags="$LDFLAGS"
LDFLAGS="$LDFLAGS $1"
aclocal.m4: make it possible to request a header file to be further used Make it possible to request testing for a header file, which if found, will be always included for futher tests. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-19 06:48:31 +08:00
AC_TRY_LINK(AC_INCLUDES_DEFAULT,
Makefile: make it possible to compile with gcc link-time optimization Put in the necessary machinery to compile with gcc link-time optimization. This means compiling and linking with -flto, as well as using gcc-ar and gcc-ranlib instead of the normal tools. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-03-01 10:48:01 +08:00
[printf("Hello, World!\n");],
aclocal.m4: fix underquoted strings Some strings were underquoted, causing failures. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-24 12:42:08 +08:00
[AC_MSG_RESULT([yes])
CFLAGS="$pa_add_cldflags__old_cflags ifelse([$2],[],[$1],[$2])"
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
LDFLAGS="$pa_add_cldflags__old_ldflags ifelse([$2],[],[$1],[$2])"
AC_DEFINE(PA_SYM([CFLAG_],[$1]), 1,
[Define to 1 if compiled with the `$1' compiler flag])],
aclocal.m4: fix underquoted strings Some strings were underquoted, causing failures. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-24 12:42:08 +08:00
[AC_MSG_RESULT([no])
CFLAGS="$pa_add_cldflags__old_cflags"
LDFLAGS="$pa_add_cldflags__old_ldflags"])])
Makefile: make it possible to compile with gcc link-time optimization Put in the necessary machinery to compile with gcc link-time optimization. This means compiling and linking with -flto, as well as using gcc-ar and gcc-ranlib instead of the normal tools. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-03-01 10:48:01 +08:00
aclocal.m4: make it possible to request a header file to be further used Make it possible to request testing for a header file, which if found, will be always included for futher tests. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-19 06:48:31 +08:00
dnl --------------------------------------------------------------------------
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
dnl PA_HAVE_FUNC(func_name)
autoconf: detect the broken bool in OpenWatcom 1.8 OpenWatcom 1.8 has a C99 mode, which implements _Bool and <stdbool.h>. Unfortunately the implementation is broken, and doesn't let _Bool be implicitly converted to integer (as required by the C99 spec). Detect this case in autoconf.
2009-03-02 05:57:40 +08:00
dnl
Portability improvements and autoconf modernization Improve the portability of the code and modernize our use of autoconf. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-02-18 16:54:30 +08:00
dnl Look for a function with the specified arguments which could be
dnl a builtin/intrinsic function.
autoconf: detect the broken bool in OpenWatcom 1.8 OpenWatcom 1.8 has a C99 mode, which implements _Bool and <stdbool.h>. Unfortunately the implementation is broken, and doesn't let _Bool be implicitly converted to integer (as required by the C99 spec). Detect this case in autoconf.
2009-03-02 05:57:40 +08:00
dnl --------------------------------------------------------------------------
Portability improvements and autoconf modernization Improve the portability of the code and modernize our use of autoconf. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-02-18 16:54:30 +08:00
AC_DEFUN(PA_HAVE_FUNC,
[AC_MSG_CHECKING([for $1])
aclocal.m4: correct and update PA_HAVE_FUNC() PA_HAVE_FUNC() would fail on some systems for inline functions or macros due to missing #includes. Also modernize to current autoconf style. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-30 08:02:52 +08:00
AC_LINK_IFELSE([AC_LANG_SOURCE([
AC_INCLUDES_DEFAULT
int main(void) {
(void)$1$2;
return 0;
}
])],
[AC_MSG_RESULT([yes])
AC_DEFINE(AS_TR_CPP([HAVE_$1]), 1,
[Define to 1 if you have the `$1' intrinsic function.])],
[AC_MSG_RESULT([no])])
])
autoconf improvements: @SET_MAKE@, library extension Minor autoconf corner cases. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-03-10 06:11:40 +08:00
dnl --------------------------------------------------------------------------
dnl PA_LIBEXT
dnl
dnl Guess the library extension based on the object extension
dnl --------------------------------------------------------------------------
AC_DEFUN(PA_LIBEXT,
[AC_MSG_CHECKING([for suffix of library files])
if test x"$LIBEXT" = x; then
case "$OBJEXT" in
obj )
LIBEXT=lib
;;
*)
LIBEXT=a
;;
esac
fi
AC_MSG_RESULT([$LIBEXT])
AC_SUBST([LIBEXT])])
Better support for function attributes, autoconf cleanups Use autoconf to detect function attributes; some compilers like Sun CC do support some gcc-style attributes, but don't define __GNUC__. Also -U__STRICT_ANSI__ already in configure.ac so our tests match what we might eventually encounter. Add const_func and pure_func attributes. Decorate functions in nasmlib.h with const_func and pure_func. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-11-16 06:01:37 +08:00
dnl --------------------------------------------------------------------------
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
dnl PA_FUNC_ATTRIBUTE(attribute_name)
Better support for function attributes, autoconf cleanups Use autoconf to detect function attributes; some compilers like Sun CC do support some gcc-style attributes, but don't define __GNUC__. Also -U__STRICT_ANSI__ already in configure.ac so our tests match what we might eventually encounter. Add const_func and pure_func attributes. Decorate functions in nasmlib.h with const_func and pure_func. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-11-16 06:01:37 +08:00
dnl
dnl See if this compiler supports the equivalent of a specific gcc
dnl attribute on a function, using the __attribute__(()) syntax.
dnl All arguments except the attribute name are optional.
dnl PA_FUNC_ATTRIBUTE(attribute, attribute_opts, return_type,
dnl prototype_args, call_args)
dnl --------------------------------------------------------------------------
AC_DEFUN(PA_FUNC_ATTRIBUTE,
[AC_MSG_CHECKING([if $CC supports the $1 function attribute])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
aclocal.m4: make it possible to request a header file to be further used Make it possible to request testing for a header file, which if found, will be always included for futher tests. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-19 06:48:31 +08:00
AC_INCLUDES_DEFAULT
Better support for function attributes, autoconf cleanups Use autoconf to detect function attributes; some compilers like Sun CC do support some gcc-style attributes, but don't define __GNUC__. Also -U__STRICT_ANSI__ already in configure.ac so our tests match what we might eventually encounter. Add const_func and pure_func attributes. Decorate functions in nasmlib.h with const_func and pure_func. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-11-16 06:01:37 +08:00
extern ifelse([$3],[],[void *],[$3]) __attribute__(($1$2))
bar(ifelse([$4],[],[int],[$4]));
malloc: simplify nasm_malloc code, add nasm_strcatn() Simplify the nasm_malloc() code by moving the pointer check into a common subroutine. We can now issue a filename error even for failures like malloc(). Add support for the gcc sentinel attribute (verify that a list ends with NULL). Add a handful of safe_alloc attributes. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2018-05-31 02:40:42 +08:00
ifelse([$3],[],[void *],[$3]) foo(void);
ifelse([$3],[],[void *],[$3]) foo(void)
Better support for function attributes, autoconf cleanups Use autoconf to detect function attributes; some compilers like Sun CC do support some gcc-style attributes, but don't define __GNUC__. Also -U__STRICT_ANSI__ already in configure.ac so our tests match what we might eventually encounter. Add const_func and pure_func attributes. Decorate functions in nasmlib.h with const_func and pure_func. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-11-16 06:01:37 +08:00
{
malloc: simplify nasm_malloc code, add nasm_strcatn() Simplify the nasm_malloc() code by moving the pointer check into a common subroutine. We can now issue a filename error even for failures like malloc(). Add support for the gcc sentinel attribute (verify that a list ends with NULL). Add a handful of safe_alloc attributes. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2018-05-31 02:40:42 +08:00
ifelse([$3],[void],[],[return])
bar(ifelse([$5],[],[1],[$5]));
Better support for function attributes, autoconf cleanups Use autoconf to detect function attributes; some compilers like Sun CC do support some gcc-style attributes, but don't define __GNUC__. Also -U__STRICT_ANSI__ already in configure.ac so our tests match what we might eventually encounter. Add const_func and pure_func attributes. Decorate functions in nasmlib.h with const_func and pure_func. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-11-16 06:01:37 +08:00
}
])],
[AC_MSG_RESULT([yes])
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
AC_DEFINE(PA_SYM([HAVE_FUNC_ATTRIBUTE_],[$1]), 1,
Better support for function attributes, autoconf cleanups Use autoconf to detect function attributes; some compilers like Sun CC do support some gcc-style attributes, but don't define __GNUC__. Also -U__STRICT_ANSI__ already in configure.ac so our tests match what we might eventually encounter. Add const_func and pure_func attributes. Decorate functions in nasmlib.h with const_func and pure_func. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-11-16 06:01:37 +08:00
[Define to 1 if your compiler supports __attribute__(($1)) on functions])],
[AC_MSG_RESULT([no])])
])
If we have new features introduced by C11, use them Instead of using hacks or compiler-specific features, if we have standard features as defined in ISO C11, use them. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-12-20 18:29:58 +08:00
dnl --------------------------------------------------------------------------
dnl PA_FUNC_ATTRIBUTE_ERROR
dnl
dnl See if this compiler supports __attribute__((error("foo")))
dnl The generic version of this doesn't work as it makes the compiler
dnl throw an error by design.
dnl --------------------------------------------------------------------------
AC_DEFUN(PA_FUNC_ATTRIBUTE_ERROR,
[AC_MSG_CHECKING([if $CC supports the error function attribute])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
aclocal.m4: make it possible to request a header file to be further used Make it possible to request testing for a header file, which if found, will be always included for futher tests. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-19 06:48:31 +08:00
AC_INCLUDES_DEFAULT
If we have new features introduced by C11, use them Instead of using hacks or compiler-specific features, if we have standard features as defined in ISO C11, use them. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-12-20 18:29:58 +08:00
extern void __attribute__((error("message"))) barf(void);
configure: make sure we flag invalid attributes Use -Werror=attributes so we can actually test for non-supported attributes without spewing warnings. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-02-24 11:22:27 +08:00
void foo(void);
If we have new features introduced by C11, use them Instead of using hacks or compiler-specific features, if we have standard features as defined in ISO C11, use them. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-12-20 18:29:58 +08:00
void foo(void)
{
if (0)
barf();
}
])],
[AC_MSG_RESULT([yes])
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
AC_DEFINE([HAVE_FUNC_ATTRIBUTE_ERROR], 1,
If we have new features introduced by C11, use them Instead of using hacks or compiler-specific features, if we have standard features as defined in ISO C11, use them. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-12-20 18:29:58 +08:00
[Define to 1 if your compiler supports __attribute__((error)) on functions])],
[AC_MSG_RESULT([no])])
])
aclocal.m4: make it possible to request a header file to be further used Make it possible to request testing for a header file, which if found, will be always included for futher tests. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-19 06:48:31 +08:00
autoconf: fix handling of --enable/--disable options, WINE fix AC_ARG_ENABLE() doesn't really work the way you expect: one argument is called on *any* invocation. Create simple helper wrappers to get the effect we really want for boolean options. Define WINELOADER=/dev/null to prevent autoconf from inadvertently running Wine and think we are not cross-compiling even if we are. It is at the very best slow and buys us absolutely nothing. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-07 06:24:58 +08:00
dnl --------------------------------------------------------------------------
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
dnl PA_ARG_ENABLED(option, helptext [,enabled_action [,disabled_action]])
dnl PA_ARG_DISABLED(option, helptext [,disabled_action [,enabled_action]])
autoconf: fix handling of --enable/--disable options, WINE fix AC_ARG_ENABLE() doesn't really work the way you expect: one argument is called on *any* invocation. Create simple helper wrappers to get the effect we really want for boolean options. Define WINELOADER=/dev/null to prevent autoconf from inadvertently running Wine and think we are not cross-compiling even if we are. It is at the very best slow and buys us absolutely nothing. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-07 06:24:58 +08:00
dnl
dnl Simpler-to-use versions of AC_ARG_ENABLED, that include the
dnl test for $enableval and the AS_HELP_STRING definition
dnl --------------------------------------------------------------------------
AC_DEFUN(PA_ARG_ENABLED,
aclocal.m4: fix underquoted strings Some strings were underquoted, causing failures. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-24 12:42:08 +08:00
[AC_ARG_ENABLE([$1], [AS_HELP_STRING([--enable-$1],[$2])], [], [enableval=no])
AS_IF([test x"$enableval" != xno], [$3], [$4])
autoconf: fix handling of --enable/--disable options, WINE fix AC_ARG_ENABLE() doesn't really work the way you expect: one argument is called on *any* invocation. Create simple helper wrappers to get the effect we really want for boolean options. Define WINELOADER=/dev/null to prevent autoconf from inadvertently running Wine and think we are not cross-compiling even if we are. It is at the very best slow and buys us absolutely nothing. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-07 06:24:58 +08:00
])
AC_DEFUN(PA_ARG_DISABLED,
aclocal.m4: fix underquoted strings Some strings were underquoted, causing failures. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-24 12:42:08 +08:00
[AC_ARG_ENABLE([$1],[AS_HELP_STRING([--disable-$1],[$2])], [], [enableval=yes])
AS_IF([test x"$enableval" = xno], [$3], [$4])
autoconf: fix handling of --enable/--disable options, WINE fix AC_ARG_ENABLE() doesn't really work the way you expect: one argument is called on *any* invocation. Create simple helper wrappers to get the effect we really want for boolean options. Define WINELOADER=/dev/null to prevent autoconf from inadvertently running Wine and think we are not cross-compiling even if we are. It is at the very best slow and buys us absolutely nothing. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-07 06:24:58 +08:00
])
Merge branch 'master' into elf Resolved Conflicts: aclocal.m4 output/outelf.c Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-19 07:07:18 +08:00
aclocal.m4: make it possible to request a header file to be further used Make it possible to request testing for a header file, which if found, will be always included for futher tests. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-19 06:48:31 +08:00
dnl --------------------------------------------------------------------------
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
dnl PA_ADD_HEADERS(headers...)
aclocal.m4: make it possible to request a header file to be further used Make it possible to request testing for a header file, which if found, will be always included for futher tests. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-19 06:48:31 +08:00
dnl
dnl Call AC_CHECK_HEADERS(), and add to ac_includes_default if found
dnl --------------------------------------------------------------------------
AC_DEFUN(_PA_ADD_HEADER,
[AC_CHECK_HEADERS([$1],[ac_includes_default="$ac_includes_default
aclocal.m4: remove dnl which made autoconf complain autoconf complained about this dnl, and it's not necessary anyway (and perhaps even potentially harmful? Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 04:31:22 +08:00
#include <$1>"
aclocal.m4: add defines for added CFLAGS, cleanups, PA_SYM() Add defines for added CFLAGS. This can be useful, for example, for LTO or sanitizers being enabled. Various cleanups for readability and documentation; use macros available in current autoconf. Add new utility function PA_SYM(), similar to AS_TR_CPP() except collapses sequential underscores. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-11-02 01:45:50 +08:00
])])
aclocal.m4: make it possible to request a header file to be further used Make it possible to request testing for a header file, which if found, will be always included for futher tests. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-19 06:48:31 +08:00
AC_DEFUN(PA_ADD_HEADERS,
[m4_map_args_w([$1],[_PA_ADD_HEADER(],[)])])
Fix problem with C99 inlines and -Werror=missing-prototypes Some older versions of gcc (gcc 4.2.1 at least) produce a warning, promoted to error, on C99 inlines. Do some work to figure out if we need to fall back to GNU inline syntax. Fix some issues with GNU inline syntax. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2018-02-21 04:34:17 +08:00
dnl --------------------------------------------------------------------------
dnl PA_CHECK_BAD_STDC_INLINE
dnl
dnl Some versions of gcc seem to apply -Wmissing-prototypes to C99
dnl inline functions, which means we need to use GNU inline syntax
dnl --------------------------------------------------------------------------
AC_DEFUN(PA_CHECK_BAD_STDC_INLINE,
[AC_MSG_CHECKING([if $CC supports C99 external inlines])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
AC_INCLUDES_DEFAULT
/* Don't mistake GNU inlines for c99 */
#ifdef __GNUC_GNU_INLINE__
# error "Using gnu inline standard"
#endif
inline int foo(int x)
{
return x+1;
}
])],
[AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_STDC_INLINE, 1,
[Define to 1 if your compiler supports C99 extern inline])],
[AC_MSG_RESULT([no])
PA_ADD_CFLAGS([-fgnu89-inline])])])
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