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[config] Make macros more robust

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- FORK_ macros now correctly ignore non-empty but blank default actions
- Removed test variable left in last commit
This commit is contained in:
Scott Shambarger
2017-01-06 12:49:57 -08:00
parent ce4ef0aa23
commit c4195239d2
2 changed files with 17 additions and 16 deletions
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22
m4/fork_checks.m4
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@@ -31,7 +31,7 @@ dnl with working CPPFLAGS/LIBS for additional checks. DESCRIPTION used as
dnl friendly name in error messages to help user identify software.
dnl Restores original CPPFLAGS and LIBS when done. Expands
dnl ACTION-IF-NOT-FOUND if ENV_* not set, and FUNCTION in LIBRARY not
dnl found overriding default error. (NOTE: default must be empty to get error)
dnl found overriding default error.
AC_DEFUN([FORK_LIB_REQUIRE],
[AS_VAR_PUSHDEF([FORK_MSG], [fork_msg_$3])
AC_ARG_VAR([$3_CFLAGS], [C compiler flags for $2, overriding search])
@@ -55,7 +55,8 @@ and $3_LIBS."]])
$1_LIBS="-l$4 $][$1_LIBS"]
AC_TRY_LINK_FUNC([[$5]], [AC_MSG_RESULT([[-l$4]])],
[AC_MSG_RESULT([[no]])
m4_default([$8], [AC_MSG_FAILURE([[Function $5 in lib$4 not found.$]FORK_MSG])])])
m4_default_nblank([$8],
[AC_MSG_FAILURE([[Function $5 in lib$4 not found.$]FORK_MSG])])])
])
])
])
@@ -74,8 +75,7 @@ dnl FUNCTION and include HEADER. Appends working package values to
dnl TARGET_CPPFLAGS and TARGET_LIBS. Expands optional ACTION-IF-FOUND with
dnl working CPPFLAGS/LIBS for additional checks. Expands
dnl ACTION-IF-NOT-FOUND only if package not found (not link/include failures)
dnl overriding default error. (NOTE: default must be empty to get error!)
dnl Restores original CPPFLAGS and LIBS when done.
dnl overriding default error. Restores original CPPFLAGS and LIBS when done.
AC_DEFUN([FORK_MODULES_CHECK],
[PKG_CHECK_MODULES([$2], [[$3]],
[[save_$2_LIBS=$LIBS; save_$2_CPPFLAGS=$CPPFLAGS]
@@ -85,7 +85,8 @@ AC_DEFUN([FORK_MODULES_CHECK],
m4_ifval([$5], [AC_CHECK_HEADER([[$5]], [],
[AC_MSG_ERROR([[Unable to find header $5]])])])
$6
[LIBS=$save_$2_LIBS; CPPFLAGS=$save_$2_CPPFLAGS]], [$7])
[LIBS=$save_$2_LIBS; CPPFLAGS=$save_$2_CPPFLAGS]],
m4_default_nblank_quoted([$7]))
])
dnl FORK_ARG_WITH_CHECK(TARGET, DESCRIPTION, OPTION, ENV, MODULES, [FUNCTION],
@@ -96,9 +97,9 @@ dnl if they are available). Expands FORK_MODULES_CHECK with remaining
dnl arguments. Defines HAVE_ENV to 1 if package found. DESCRIPTION is used
dnl in option help. Shell variable with_OPTION set to yes before
dnl ACTION-IF-FOUND. Default ACTION-IF-NOT-FOUND will fail
dnl if --with-OPTION given, and MODULES not found, or sets shell var
dnl with_OPTION to no (setting NOT-FOUND overrides this behavior to allow
dnl alternate checks).
dnl if --with-OPTION given and MODULES not found, or sets shell var
dnl with_OPTION to no if option was check. A non-empty ACTION-IF-NOT-FOUND
dnl overrides this behavior to allow alternate checks.
AC_DEFUN([FORK_ARG_WITH_CHECK],
[AC_ARG_WITH([[$3]], [AS_HELP_STRING([--with-$3],
[with $2 (default=check)])], [],
@@ -109,9 +110,10 @@ AC_DEFUN([FORK_ARG_WITH_CHECK],
AC_DEFINE([HAVE_$4], 1,
[Define to 1 to build with $2])
$8],
[m4_default([$9], [AS_IF([[test "x$with_$3" != "xcheck"]],
[m4_default_nblank([$9], [AS_IF([[test "x$with_$3" != "xcheck"]],
[AC_MSG_FAILURE([[--with-$3 was given, but test for $5 failed]])])
[with_$3=no]])])dnl keep default empty!
[with_$3=no]])
])
])
])