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build: check whether g-ir-scanner actually works

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g-ir-scanner uses distutils that have an unfortunate misfeature of
inheriting the compiler flags it itself was built with.

This includes the hardening flags that don't work with without
redhat-rpm-build and break with clang every full moon.

A configure check makes it clear about what went wrong in case
introspection is desired, otherwise turns it off.

(Taken from network-manager commit 678890ed0347849990787e8893122a39f95cb708)
This commit is contained in:
Lubomir Rintel 2018-05-29 11:27:19 +02:00
parent 667a81e593
commit 99b92fd992
1 changed files with 31 additions and 34 deletions
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65
m4/introspection.m4
View file

@ -25,46 +25,43 @@ m4_define([_GOBJECT_INTROSPECTION_CHECK_INTERNAL],
[enable_introspection=auto])
])dnl
AC_MSG_CHECKING([for gobject-introspection])
dnl presence/version checking
AS_CASE([$enable_introspection],
[no], [dnl
found_introspection="no (disabled, use --enable-introspection to enable)"
],dnl
[yes],[dnl
PKG_CHECK_EXISTS([gobject-introspection-1.0],,
AC_MSG_ERROR([gobject-introspection-1.0 is not installed]))
PKG_CHECK_EXISTS([gobject-introspection-1.0 >= $1],
found_introspection=yes,
AC_MSG_ERROR([You need to have gobject-introspection >= $1 installed to build AC_PACKAGE_NAME]))
],dnl
[auto],[dnl
PKG_CHECK_EXISTS([gobject-introspection-1.0 >= $1], found_introspection=yes, found_introspection=no)
dnl Canonicalize enable_introspection
enable_introspection=$found_introspection
],dnl
[dnl
AC_MSG_ERROR([invalid argument passed to --enable-introspection, should be one of @<:@no/auto/yes@:>@])
])dnl
AC_MSG_RESULT([$found_introspection])
INTROSPECTION_SCANNER=
INTROSPECTION_COMPILER=
INTROSPECTION_GENERATE=
INTROSPECTION_GIRDIR=
INTROSPECTION_TYPELIBDIR=
if test "x$found_introspection" = "xyes"; then
INTROSPECTION_SCANNER=`$PKG_CONFIG --variable=g_ir_scanner gobject-introspection-1.0`
INTROSPECTION_COMPILER=`$PKG_CONFIG --variable=g_ir_compiler gobject-introspection-1.0`
INTROSPECTION_GENERATE=`$PKG_CONFIG --variable=g_ir_generate gobject-introspection-1.0`
INTROSPECTION_GIRDIR=`$PKG_CONFIG --variable=girdir gobject-introspection-1.0`
INTROSPECTION_TYPELIBDIR="$($PKG_CONFIG --variable=typelibdir gobject-introspection-1.0)"
INTROSPECTION_CFLAGS=`$PKG_CONFIG --cflags gobject-introspection-1.0`
INTROSPECTION_LIBS=`$PKG_CONFIG --libs gobject-introspection-1.0`
INTROSPECTION_MAKEFILE=`$PKG_CONFIG --variable=datadir gobject-introspection-1.0`/gobject-introspection-1.0/Makefile.introspection
if test "x$enable_introspection" == "xno"; then
found_introspection="no"
else
PKG_CHECK_EXISTS([gobject-introspection-1.0 >= $1], [
INTROSPECTION_SCANNER=`$PKG_CONFIG --variable=g_ir_scanner gobject-introspection-1.0`
INTROSPECTION_COMPILER=`$PKG_CONFIG --variable=g_ir_compiler gobject-introspection-1.0`
INTROSPECTION_GENERATE=`$PKG_CONFIG --variable=g_ir_generate gobject-introspection-1.0`
INTROSPECTION_GIRDIR=`$PKG_CONFIG --variable=girdir gobject-introspection-1.0`
INTROSPECTION_TYPELIBDIR="$($PKG_CONFIG --variable=typelibdir gobject-introspection-1.0)"
INTROSPECTION_CFLAGS=`$PKG_CONFIG --cflags gobject-introspection-1.0`
INTROSPECTION_LIBS=`$PKG_CONFIG --libs gobject-introspection-1.0`
INTROSPECTION_MAKEFILE=`$PKG_CONFIG --variable=datadir gobject-introspection-1.0`/gobject-introspection-1.0/Makefile.introspection
AC_MSG_CHECKING([if $INTROSPECTION_SCANNER works])
if CFLAGS="${CFLAGS} -Wno-error" "$INTROSPECTION_SCANNER" --namespace=test --library=c /dev/null --output /dev/null >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
found_introspection=yes
else
found_introspection="no (compiler failure -- check config.log)"
fi
AC_MSG_RESULT([$found_introspection])
], [found_introspection="no (not installed)"])
if test "x$enable_introspection" == "xyes"; then
if test "x$found_introspection" != "xyes"; then
AC_MSG_ERROR([introspection enabled but can't be used])
fi
elif test "x$enable_introspection" != "xauto"; then
AC_MSG_ERROR([invalid argument passed to --enable-introspection, should be one of @<:@no/auto/yes@:>@])
fi
fi
AC_SUBST(INTROSPECTION_SCANNER, 'CFLAGS="${CFLAGS} -Wno-error" '"$INTROSPECTION_SCANNER")
AC_SUBST(INTROSPECTION_COMPILER)
AC_SUBST(INTROSPECTION_GENERATE)