112 lines
3.7 KiB
Diff
112 lines
3.7 KiB
Diff
From 748a9fd3a8e90e52a126190dbe0d97da6e0941ff Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
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Date: Wed, 11 Aug 2021 20:55:14 +0100
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Subject: [PATCH] make --with-idlc-cpp=cpp work for gcc cpp as a ucpp
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replacement
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e.g. the example of
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https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1524638
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has the same output .urd using cpp with these flags as ucpp created
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Change-Id: Iadfd2deba7d365c66c3260fd6736c031987e107c
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---
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config_host.mk.in | 1 +
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configure.ac | 14 ++++++++++++++
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idlc/Executable_idlc.mk | 8 ++++++++
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idlc/source/idlccompile.cxx | 8 ++++++++
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4 files changed, 31 insertions(+)
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diff --git a/config_host.mk.in b/config_host.mk.in
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index 58ca1d1c14fb..6810660067b0 100644
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--- a/config_host.mk.in
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+++ b/config_host.mk.in
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@@ -635,6 +635,7 @@ export SYSTEM_RHINO=@SYSTEM_RHINO@
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export SYSTEM_SERF=@SYSTEM_SERF@
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export SYSTEM_STAROFFICE=@SYSTEM_STAROFFICE@
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export SYSTEM_UCPP=@SYSTEM_UCPP@
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+export SYSTEM_UCPP_IS_GCC=@SYSTEM_UCPP_IS_GCC@
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export SYSTEM_VISIO=@SYSTEM_VISIO@
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export SYSTEM_WPD=@SYSTEM_WPD@
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export SYSTEM_WPG=@SYSTEM_WPG@
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diff --git a/configure.ac b/configure.ac
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index 3d2bf7e24555..ac226fd46ace 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -8807,9 +8807,22 @@ dnl ===================================================================
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dnl Check for C preprocessor to use
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dnl ===================================================================
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AC_MSG_CHECKING([which C preprocessor to use in idlc])
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+SYSTEM_UCPP_IS_GCC=
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if test -n "$with_idlc_cpp"; then
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AC_MSG_RESULT([$with_idlc_cpp])
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AC_PATH_PROG(SYSTEM_UCPP, $with_idlc_cpp)
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+ AC_MSG_CHECKING([if $with_idlc_cpp is GCC CPP])
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+ # ucpp will accept -v (to output version), warn about the others as unknown
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+ # and return 1 (due to -v)
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+ # gcc will accept -v (as verbose), --version (to output version) and -nostdinc
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+ # and return 0 (due to --version ) if all options are supported
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+ $SYSTEM_UCPP -v --version -nostdinc >/dev/null 2>/dev/null
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+ if test $? -eq 0; then
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+ SYSTEM_UCPP_IS_GCC=TRUE
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+ AC_MSG_RESULT([yes])
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+ else
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+ AC_MSG_RESULT([no])
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+ fi
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else
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AC_MSG_RESULT([ucpp])
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AC_MSG_CHECKING([which ucpp tp use])
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@@ -8822,6 +8835,7 @@ else
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fi
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fi
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AC_SUBST(SYSTEM_UCPP)
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+AC_SUBST(SYSTEM_UCPP_IS_GCC)
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dnl ===================================================================
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dnl Check for epm (not needed for Windows)
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diff --git a/idlc/Executable_idlc.mk b/idlc/Executable_idlc.mk
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index e194e9049c77..f2f79dcb8911 100644
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--- a/idlc/Executable_idlc.mk
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+++ b/idlc/Executable_idlc.mk
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@@ -35,10 +35,18 @@ $(eval $(call gb_Executable_add_scanners,idlc,\
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))
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ifneq (,$(SYSTEM_UCPP))
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+
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$(eval $(call gb_Executable_add_defs,idlc,\
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-DSYSTEM_UCPP \
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-DUCPP=\"file://$(SYSTEM_UCPP)\" \
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))
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+
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+ifneq ($(SYSTEM_UCPP_IS_GCC),)
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+$(eval $(call gb_Executable_add_defs,idlc,\
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+ -DSYSTEM_UCPP_IS_GCC \
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+))
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+endif
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+
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endif
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$(eval $(call gb_Executable_add_exception_objects,idlc,\
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diff --git a/idlc/source/idlccompile.cxx b/idlc/source/idlccompile.cxx
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index bf3325d6821a..1902d63e0cad 100644
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--- a/idlc/source/idlccompile.cxx
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+++ b/idlc/source/idlccompile.cxx
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@@ -237,7 +237,15 @@ sal_Int32 compileFile(const OString * pathname)
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::std::vector< OUString> lCppArgs;
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lCppArgs.emplace_back("-DIDL");
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lCppArgs.emplace_back("-C");
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+#ifdef SYSTEM_UCPP_IS_GCC
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+ // -nostdinc Do not search the standard system directories for header files
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+ lCppArgs.emplace_back("-nostdinc");
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+ // with gcc cpp, even when not explicitly including anything, /usr/include/stdc-predef.h
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+ // gets inserted without -nostdinc
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+#else
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+ // -zI Do not use the standard (compile-time) include path.
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lCppArgs.emplace_back("-zI");
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+#endif
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Options* pOptions = idlc()->getOptions();
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--
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2.31.1
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