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* acfunctions.m4 (AC_FUNC_ALLOCA): Don't require AC_PROG_CPP,
since (i) you actually need a compiler, (ii) AC_TRY_LINK handles it. * acheaders.m4 (AC_HEADER_STDC): Don't require AC_PROG_CPP, AC_TRY_CPP does it.
This commit is contained in:
Akim Demaille
parent
e555c2fb78
commit
a8ce12b0d6
@ -1,3 +1,11 @@
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2000-11-14 Akim Demaille <akim@epita.fr>
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* acfunctions.m4 (AC_FUNC_ALLOCA): Don't require AC_PROG_CPP,
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since (i) you actually need a compiler, (ii) AC_TRY_LINK handles
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it.
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* acheaders.m4 (AC_HEADER_STDC): Don't require AC_PROG_CPP,
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AC_TRY_CPP does it.
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2000-11-14 Akim Demaille <akim@epita.fr>
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Create acheaders.m4.
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@ -197,8 +197,7 @@ AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
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# AC_FUNC_ALLOCA
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# --------------
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AC_DEFUN([AC_FUNC_ALLOCA],
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[AC_REQUIRE_CPP()dnl Set CPP; we run AC_EGREP_CPP conditionally.
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# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
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[# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
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# for constant arguments. Useless!
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AC_CACHE_CHECK([for working alloca.h], ac_cv_working_alloca_h,
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[AC_TRY_LINK([@%:@include <alloca.h>],
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29
acgeneral.m4
29
acgeneral.m4
@ -2771,10 +2771,12 @@ m4_popdef([AC_Lib_Name])dnl
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# _AC_TRY_CPP
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# -----------
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# Run cpp and set ac_cpp_err to "yes" for an error, to
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# "$ac_(c,cxx)_preproc_warn_flag" if there are warnings or to "" if neither
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# warnings nor errors have been detected.
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# eval is necessary to expand ac_cpp. It may put trace lines to conftest.err
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# when run under sh -x (e.g. when zsh is used), so we filter them out.
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# "$ac_(c,cxx)_preproc_warn_flag" if there are warnings or to "" if
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# neither warnings nor errors have been detected. eval is necessary
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# to expand ac_cpp. It may put trace lines to conftest.err when run
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# under sh -x (e.g. when zsh is used), so we filter them out.
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#
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# Do not require AC_PROG_CPP since this macro is also used by AC_PROG_CPP.
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AC_DEFUN([_AC_TRY_CPP],
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[ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.err"
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if AC_TRY_EVAL(ac_try); then
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@ -2812,15 +2814,6 @@ rm -f conftest*
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])# AC_TRY_CPP
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# AC_EGREP_HEADER(PATTERN, HEADER-FILE,
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# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
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# ---------------------------------------------------------
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AC_DEFUN([AC_EGREP_HEADER],
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[AC_EGREP_CPP([$1],
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[#include <$2>
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], [$3], [$4])])
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# AC_EGREP_CPP(PATTERN, PROGRAM,
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# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
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# ------------------------------------------------------
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@ -2842,6 +2835,16 @@ rm -f conftest*
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])# AC_EGREP_CPP
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# AC_EGREP_HEADER(PATTERN, HEADER-FILE,
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# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
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# ---------------------------------------------------------
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AC_DEFUN([AC_EGREP_HEADER],
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[AC_EGREP_CPP([$1],
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[#include <$2>
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], [$3], [$4])])
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## ------------------ ##
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## Examining syntax. ##
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@ -223,8 +223,7 @@ fi
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# AC_HEADER_STDC
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# --------------
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AC_DEFUN([AC_HEADER_STDC],
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[AC_REQUIRE_CPP()dnl
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AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc,
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[AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc,
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[AC_TRY_CPP([#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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@ -197,8 +197,7 @@ AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
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# AC_FUNC_ALLOCA
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# --------------
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AC_DEFUN([AC_FUNC_ALLOCA],
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[AC_REQUIRE_CPP()dnl Set CPP; we run AC_EGREP_CPP conditionally.
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# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
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[# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
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# for constant arguments. Useless!
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AC_CACHE_CHECK([for working alloca.h], ac_cv_working_alloca_h,
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[AC_TRY_LINK([@%:@include <alloca.h>],
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@ -2771,10 +2771,12 @@ m4_popdef([AC_Lib_Name])dnl
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# _AC_TRY_CPP
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# -----------
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# Run cpp and set ac_cpp_err to "yes" for an error, to
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# "$ac_(c,cxx)_preproc_warn_flag" if there are warnings or to "" if neither
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# warnings nor errors have been detected.
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# eval is necessary to expand ac_cpp. It may put trace lines to conftest.err
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# when run under sh -x (e.g. when zsh is used), so we filter them out.
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# "$ac_(c,cxx)_preproc_warn_flag" if there are warnings or to "" if
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# neither warnings nor errors have been detected. eval is necessary
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# to expand ac_cpp. It may put trace lines to conftest.err when run
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# under sh -x (e.g. when zsh is used), so we filter them out.
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#
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# Do not require AC_PROG_CPP since this macro is also used by AC_PROG_CPP.
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AC_DEFUN([_AC_TRY_CPP],
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[ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.err"
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if AC_TRY_EVAL(ac_try); then
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@ -2812,15 +2814,6 @@ rm -f conftest*
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])# AC_TRY_CPP
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# AC_EGREP_HEADER(PATTERN, HEADER-FILE,
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# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
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# ---------------------------------------------------------
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AC_DEFUN([AC_EGREP_HEADER],
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[AC_EGREP_CPP([$1],
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[#include <$2>
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], [$3], [$4])])
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# AC_EGREP_CPP(PATTERN, PROGRAM,
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# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
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# ------------------------------------------------------
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@ -2842,6 +2835,16 @@ rm -f conftest*
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])# AC_EGREP_CPP
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# AC_EGREP_HEADER(PATTERN, HEADER-FILE,
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# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
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# ---------------------------------------------------------
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AC_DEFUN([AC_EGREP_HEADER],
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[AC_EGREP_CPP([$1],
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[#include <$2>
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], [$3], [$4])])
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## ------------------ ##
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## Examining syntax. ##
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@ -223,8 +223,7 @@ fi
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# AC_HEADER_STDC
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# --------------
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AC_DEFUN([AC_HEADER_STDC],
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[AC_REQUIRE_CPP()dnl
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AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc,
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[AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc,
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[AC_TRY_CPP([#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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