Implement a qmake-based build for Subsurface

This is working for me, but requires a bit more testing. To build,
run:
  qmake [options]

Where options might be:
  V=1               disable "silent" build
  LIBDCDEVEL=1      use side-by-side libdivecomputer
  INCLUDEPATH+=xxx  add -Ixxx (e.g., INCLUDEPATH+=/usr/local/marble/include)
  LIBS+=xxx         add xxx to the linker flags (e.g. LIBS+=-L/usr/local/marble/lib)
  or any other qmake option, including debug and release options

If your distribution is already using qtchooser in place of qmake, you
may need to pass an extra option to qmake to select the a
cross-build. For example:

  qmake -qt=i686-w64-mingw32-qt4

If your distribution is not yet using qtchooser, then you need to file
a bug report requesting it and you need to run the full path to qmake.

Note:
 - there are some ### left in the buildsystem

Signed-off-by: Thiago Macieira <thiago@macieira.org>

1 files changed, 95 insertions, 0 deletions

diff --git a/subsurface-configure.pri b/subsurface-configure.pri
new file mode 100644
index 000000000..93f14003c
--- /dev/null
+++ b/subsurface-configure.pri
@@ -0,0 +1,95 @@
+#
+# Global settings
+#
+# Set some C constructs to be diagnosed as errors:
+#  - calling implicit functions
+#  - casting from integers to pointers or vice-versa without an explicit cast
+# Also turn on C99 mode with GNU extensions
+*-g++*: QMAKE_CFLAGS += -Werror=int-to-pointer-cast -Werror=pointer-to-int-cast -Werror=implicit-int
+!win32-msvc*: QMAKE_CFLAGS += -std=gnu99
+
+# Check if we have pkg-config
+equals($$QMAKE_HOST.os, "Windows"):NUL=NUL
+else:NUL=/dev/null
+system(pkg-config --version 2>$$NUL >$$NUL) {
+    CONFIG += link_pkgconfig
+} else {
+    message("pkg-config not found, no detection performed. See README for details")
+}
+
+#
+# Find libdivecomputer
+#
+!isEmpty(LIBDCDEVEL) {
+    # find it next to our sources
+    INCLUDEPATH += ../libdivecomputer/include
+    LIBS += -L../libdivecomputer/src/.libs -ldivecomputer
+} else:exists(/usr/local/lib/libdivecomputer.a) {
+    LIBS += -L/usr/local/lib -ldivecomputer
+} else:exists(/usr/local/lib64/libdivecomputer.a) {
+    LIBS += -L/usr/local/lib64 -ldivecomputer
+} else:link_pkgconfig {
+    # find it via pkg-config
+    PKGCONFIG += libdivecomputer
+}
+
+# Libusb-1.0 is only required if libdivecomputer was built with it.
+# And libdivecomputer is only built with it if libusb-1.0 is
+# installed. So get libusb if it exists, but don't complain
+# about it if it doesn't.
+#link_pkgconfig: packagesExist(libusb-1.0): PKGCONFIG += libusb-1.0
+
+#
+# Find libxml2 and libxslt
+#
+# They come with shell scripts that contain the information we need, so we just
+# run them. They also come with pkg-config files, but those are missing on
+# Mac (where they are part of the XCode-supplied tools).
+#
+XML2_CFLAGS = $$system(xml2-config --cflags 2>$$NUL)
+XSLT_CFLAGS = $$system(xslt-config --cflags 2>$$NUL)
+XML2_LIBS = $$system(xml2-config --libs 2>$$NUL)
+XSLT_LIBS = $$system(xslt-config --libs 2>$$NUL)
+link_pkgconfig {
+    isEmpty(XML2_CFLAGS)|isEmpty(XML2_LIBS): \
+        error("Could not find libxml2. Did you forget to install it?")
+    isEmpty(XSLT_CFLAGS)|isEmpty(XSLT_LIBS): \
+        error("Could not find libxslt. Did you forget to install it?")
+}
+
+QMAKE_CFLAGS *= $$XML2_CFLAGS $$XSLT_CFLAGS
+QMAKE_CXXFLAGS *= $$XML2_CFLAGS $$XSLT_CFLAGS
+LIBS *= $$XML2_LIBS $$XSLT_LIBS
+
+#
+# Find other pkg-config-based projects
+# We're searching for:
+#  libzip
+#  sqlite3
+link_pkgconfig: PKGCONFIG += libzip sqlite3
+
+#
+# Find libmarble
+#
+# Before Marble 4.9, the GeoDataTreeModel.h header wasn't installed
+# Check if it's present by trying to compile
+# ### FIXME: implement that
+win32: CONFIG(debug, debug|release): LIBS += -lmarblewidgetd
+else: LIBS += -lmarblewidget
+
+#
+# Platform-specific changes
+#
+win32 {
+    LIBS += -lwsock32
+    DEFINES -= UNICODE
+}
+
+#
+# misc
+#
+!equals(V, 1): CONFIG += silent
+MOC_DIR = .moc
+UI_DIR = .uic
+RCC_DIR = .rcc
+OBJECTS_DIR = .obj