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configure.ac: basic libs

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* configure.ac: basic libraries like -lm are necessary for some
  extension libraries on some platforms.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62749 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2018-03-14 14:07:00 +00:00
parent e3c023337c
commit 999b58c1ff
1 changed files with 5 additions and 2 deletions
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7
configure.ac
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@ -18,7 +18,6 @@ AC_DISABLE_OPTION_CHECKING
AC_ARG_VAR([cflags], [additional CFLAGS])
AC_ARG_VAR([cppflags], [additional CPPFLAGS])
AC_ARG_VAR([cxxflags], [additional CXXFLAGS])
ORIG_LIBS=$LIBS
{ # environment section
@ -716,13 +715,16 @@ AS_CASE(["$target_os"],
dnl Checks for libraries.
AS_CASE(["$target_os"],[*bsd*|dragonfly*],[],[ac_cv_func_daemon=no])
AS_UNSET(ORIG_LIBS)
POSTLINK=:
AC_SUBST(POSTLINK)
AS_CASE(["$target_os"],
[nextstep*], [ ],
[openstep*], [ ],
[rhapsody*], [ ],
[darwin*], [ RUBY_PREPEND_OPTION(LIBS, -lobjc)
[darwin*], [
ORIG_LIBS="$LIBS"
RUBY_PREPEND_OPTION(LIBS, -lobjc)
RUBY_APPEND_OPTIONS(CPPFLAGS, -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT)
AC_MSG_CHECKING(whether Mac OS X 10.5 or later)
AC_TRY_CPP([#include <AvailabilityMacros.h>
@ -959,6 +961,7 @@ main()
ac_cv_func_round=no
],
[ LIBS="-lm $LIBS"])
: ${ORIG_LIBS=$LIBS}
AC_CHECK_LIB(crypt, crypt) # glibc (GNU/Linux, GNU/Hurd, GNU/kFreeBSD)
AC_CHECK_LIB(dl, dlopen) # Dynamic linking for SunOS/Solaris and SYSV